• Spring--SSH整合


      SSH集成

      1、创建maven项目并导入pom依赖

        pom.xml

       注: 建议分步骤导入,以免在导入的时候导致jar包下载出现问题

      1 <project xmlns="http://maven.apache.org/POM/4.0.0"
      2     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      3     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
      4     <modelVersion>4.0.0</modelVersion>
      5     <groupId>com.yuan</groupId>
      6     <artifactId>T226_SSH</artifactId>
      7     <packaging>war</packaging>
      8     <version>0.0.1-SNAPSHOT</version>
      9     <name>T226_SSH Maven Webapp</name>
     10     <url>http://maven.apache.org</url>
     11     <properties>
     12         <hibernate.version>5.2.12.Final</hibernate.version>
     13         <mysql.version>5.1.44</mysql.version>
     14         <spring.version>5.0.1.RELEASE</spring.version>
     15         <struts2.version>2.5.13</struts2.version>
     16         <slf4j.version>1.7.7</slf4j.version>
     17         <log4j2.version>2.9.1</log4j2.version>
     18         <disruptor.version>3.2.0</disruptor.version>
     19         <junit.version>4.12</junit.version>
     20         <javax.servlet.version>4.0.0</javax.servlet.version>
     21         <jstl.version>1.2</jstl.version>
     22         <standard.version>1.1.2</standard.version>
     23         <tomcat-jsp-api.version>8.0.47</tomcat-jsp-api.version>
     24     </properties>
     25     <dependencies>
     26         <!-- 1、导入hibernate依赖 -->
     27         <dependency>
     28             <groupId>org.hibernate</groupId>
     29             <artifactId>hibernate-core</artifactId>
     30             <version>${hibernate.version}</version>
     31         </dependency>
     32         <dependency>
     33             <groupId>org.hibernate</groupId>
     34             <artifactId>hibernate-c3p0</artifactId>
     35             <version>${hibernate.version}</version>
     36         </dependency>
     37         <dependency>
     38             <groupId>org.hibernate</groupId>
     39             <artifactId>hibernate-ehcache</artifactId>
     40             <version>${hibernate.version}</version>
     41         </dependency>
     42         <dependency>
     43             <groupId>mysql</groupId>
     44             <artifactId>mysql-connector-java</artifactId>
     45             <version>${mysql.version}</version>
     46         </dependency>
     47 
     48         <!-- 2、导入spring依赖 -->
     49         <dependency>
     50             <groupId>org.springframework</groupId>
     51             <artifactId>spring-context</artifactId>
     52             <version>${spring.version}</version>
     53         </dependency>
     54         <dependency>
     55             <groupId>org.springframework</groupId>
     56             <artifactId>spring-orm</artifactId>
     57             <version>${spring.version}</version>
     58         </dependency>
     59         <dependency>
     60             <groupId>org.springframework</groupId>
     61             <artifactId>spring-web</artifactId>
     62             <version>${spring.version}</version>
     63         </dependency>
     64         <dependency>
     65             <groupId>org.springframework</groupId>
     66             <artifactId>spring-aspects</artifactId>
     67             <version>${spring.version}</version>
     68         </dependency>
     69 
     70         <!-- 3、导入struts2依赖 -->
     71         <dependency>
     72             <groupId>org.apache.struts</groupId>
     73             <artifactId>struts2-core</artifactId>
     74             <version>${struts2.version}</version>
     75         </dependency>
     76         <dependency>
     77             <groupId>org.apache.struts</groupId>
     78             <artifactId>struts2-spring-plugin</artifactId>
     79             <version>${struts2.version}</version>
     80         </dependency>
     81 
     82 
     83         <!-- 4、导入日志系统依赖 -->
     84         <!-- log配置:Log4j2 + Slf4j -->
     85         <!-- slf4j核心包 -->
     86         <dependency>
     87             <groupId>org.slf4j</groupId>
     88             <artifactId>slf4j-api</artifactId>
     89             <version>${slf4j.version}</version>
     90         </dependency>
     91         <dependency>
     92             <groupId>org.slf4j</groupId>
     93             <artifactId>jcl-over-slf4j</artifactId>
     94             <version>${slf4j.version}</version>
     95             <scope>runtime</scope>
     96         </dependency>
     97 
     98         <!--用于与slf4j保持桥接 -->
     99         <dependency>
    100             <groupId>org.apache.logging.log4j</groupId>
    101             <artifactId>log4j-slf4j-impl</artifactId>
    102             <version>${log4j2.version}</version>
    103         </dependency>
    104 
    105         <!--核心log4j2jar包 -->
    106         <dependency>
    107             <groupId>org.apache.logging.log4j</groupId>
    108             <artifactId>log4j-api</artifactId>
    109             <version>${log4j2.version}</version>
    110         </dependency>
    111         <dependency>
    112             <groupId>org.apache.logging.log4j</groupId>
    113             <artifactId>log4j-core</artifactId>
    114             <version>${log4j2.version}</version>
    115         </dependency>
    116 
    117         <!--web工程需要包含log4j-web,非web工程不需要 -->
    118         <dependency>
    119             <groupId>org.apache.logging.log4j</groupId>
    120             <artifactId>log4j-web</artifactId>
    121             <version>${log4j2.version}</version>
    122             <scope>runtime</scope>
    123         </dependency>
    124         <!--需要使用log4j2的AsyncLogger需要包含disruptor -->
    125         <dependency>
    126             <groupId>com.lmax</groupId>
    127             <artifactId>disruptor</artifactId>
    128             <version>${disruptor.version}</version>
    129         </dependency>
    130 
    131 
    132         <!-- 5、other -->
    133         <!-- 5.1、junit -->
    134         <dependency>
    135             <groupId>junit</groupId>
    136             <artifactId>junit</artifactId>
    137             <version>${junit.version}</version>
    138             <scope>test</scope>
    139         </dependency>
    140 
    141         <!-- 5.2、servlet -->
    142         <dependency>
    143             <groupId>javax.servlet</groupId>
    144             <artifactId>javax.servlet-api</artifactId>
    145             <version>${javax.servlet.version}</version>
    146             <scope>provided</scope>
    147         </dependency>
    148 
    149         <!-- 5.3、jstl、standard -->
    150         <dependency>
    151             <groupId>jstl</groupId>
    152             <artifactId>jstl</artifactId>
    153             <version>${jstl.version}</version>
    154         </dependency>
    155         <dependency>
    156             <groupId>taglibs</groupId>
    157             <artifactId>standard</artifactId>
    158             <version>${standard.version}</version>
    159         </dependency>
    160 
    161         <!-- 5.4、tomcat-jsp-api -->
    162         <dependency>
    163             <groupId>org.apache.tomcat</groupId>
    164             <artifactId>tomcat-jsp-api</artifactId>
    165             <version>${tomcat-jsp-api.version}</version>
    166         </dependency>
    167 
    168 
    169 
    170     </dependencies>
    171     <build>
    172         <finalName>T226_SSH</finalName>
    173         <plugins>
    174             <plugin>
    175                 <groupId>org.apache.maven.plugins</groupId>
    176                 <artifactId>maven-compiler-plugin</artifactId>
    177                 <version>3.7.0</version>
    178                 <configuration>
    179                     <source>1.8</source>
    180                     <target>1.8</target>
    181                     <encoding>UTF-8</encoding>
    182                 </configuration>
    183             </plugin>
    184         </plugins>
    185     </build>
    186 </project>

     2、导入外部xml

       2.1数据库连接信息  db.properties

     1 db.username=root
     2 db.password=123
     3 db.driverClass=com.mysql.jdbc.Driver
     4 db.jdbcUrl=jdbc:mysql://127.0.0.1:3306/xm_sc?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT
     5 db.initialPoolSize=10
     6 db.maxPoolSize=20
     7 db.minPoolSize=5
     8 db.maxIdleTime=60
     9 db.acquireIncrement=5
    10 db.maxStatements=0
    11 db.idleConnectionTestPeriod=60
    12 db.acquireRetryAttempts=30
    13 db.breakAfterAcquireFailure=true
    14 db.testConnectionOnCheckout=false

       2.2 导入ehcache.xml

     1 <?xml version="1.0" encoding="UTF-8"?>
     2 <ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     3          xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd"
     4          updateCheck="false">
     5     <!--磁盘存储:将缓存中暂时不使用的对象,转移到硬盘,类似于Windows系统的虚拟内存-->
     6     <!--path:指定在硬盘上存储对象的路径-->
     7     <!--java.io.tmpdir 是默认的临时文件路径。 可以通过如下方式打印出具体的文件路径 System.out.println(System.getProperty("java.io.tmpdir"));-->
     8     <diskStore path="java.io.tmpdir"/>
     9 
    10 
    11     <!--defaultCache:默认的管理策略-->
    12     <!--eternal:设定缓存的elements是否永远不过期。如果为true,则缓存的数据始终有效,如果为false那么还要根据timeToIdleSeconds,timeToLiveSeconds判断-->
    13     <!--maxElementsInMemory:在内存中缓存的element的最大数目-->
    14     <!--overflowToDisk:如果内存中数据超过内存限制,是否要缓存到磁盘上-->
    15     <!--diskPersistent:是否在磁盘上持久化。指重启jvm后,数据是否有效。默认为false-->
    16     <!--timeToIdleSeconds:对象空闲时间(单位:秒),指对象在多长时间没有被访问就会失效。只对eternal为false的有效。默认值0,表示一直可以访问-->
    17     <!--timeToLiveSeconds:对象存活时间(单位:秒),指对象从创建到失效所需要的时间。只对eternal为false的有效。默认值0,表示一直可以访问-->
    18     <!--memoryStoreEvictionPolicy:缓存的3 种清空策略-->
    19     <!--FIFO:first in first out (先进先出)-->
    20     <!--LFU:Less Frequently Used (最少使用).意思是一直以来最少被使用的。缓存的元素有一个hit 属性,hit 值最小的将会被清出缓存-->
    21     <!--LRU:Least Recently Used(最近最少使用). (ehcache 默认值).缓存的元素有一个时间戳,当缓存容量满了,而又需要腾出地方来缓存新的元素的时候,那么现有缓存元素中时间戳离当前时间最远的元素将被清出缓存-->
    22     <defaultCache eternal="false" maxElementsInMemory="1000" overflowToDisk="false" diskPersistent="false"
    23                   timeToIdleSeconds="0" timeToLiveSeconds="600" memoryStoreEvictionPolicy="LRU"/>
    24 
    25 
    26     <!--name: Cache的名称,必须是唯一的(ehcache会把这个cache放到HashMap里)-->
    27     <cache name="stuCache" eternal="false" maxElementsInMemory="100"
    28            overflowToDisk="false" diskPersistent="false" timeToIdleSeconds="0"
    29            timeToLiveSeconds="300" memoryStoreEvictionPolicy="LRU"/>
    30 </ehcache>

       2.3 导入log4j2.xml

      1 <?xml version="1.0" encoding="UTF-8"?>
      2 
      3 <!-- status : 指定log4j本身的打印日志的级别.ALL< Trace < DEBUG < INFO < WARN < ERROR 
      4     < FATAL < OFF。 monitorInterval : 用于指定log4j自动重新配置的监测间隔时间,单位是s,最小是5s. -->
      5 <Configuration status="WARN" monitorInterval="30">
      6     <Properties>
      7         <!-- 配置日志文件输出目录 ${sys:user.home} -->
      8         <Property name="LOG_HOME">/root/workspace/lucenedemo/logs</Property>
      9         <property name="ERROR_LOG_FILE_NAME">/root/workspace/lucenedemo/logs/error</property>
     10         <property name="WARN_LOG_FILE_NAME">/root/workspace/lucenedemo/logs/warn</property>
     11         <property name="PATTERN">%d{yyyy-MM-dd HH:mm:ss.SSS} [%t-%L] %-5level %logger{36} - %msg%n</property>
     12     </Properties>
     13 
     14     <Appenders>
     15         <!--这个输出控制台的配置 -->
     16         <Console name="Console" target="SYSTEM_OUT">
     17             <!-- 控制台只输出level及以上级别的信息(onMatch),其他的直接拒绝(onMismatch) -->
     18             <ThresholdFilter level="trace" onMatch="ACCEPT"
     19                 onMismatch="DENY" />
     20             <!-- 输出日志的格式 -->
     21             <!-- %d{yyyy-MM-dd HH:mm:ss, SSS} : 日志生产时间 %p : 日志输出格式 %c : logger的名称 
     22                 %m : 日志内容,即 logger.info("message") %n : 换行符 %C : Java类名 %L : 日志输出所在行数 %M 
     23                 : 日志输出所在方法名 hostName : 本地机器名 hostAddress : 本地ip地址 -->
     24             <PatternLayout pattern="${PATTERN}" />
     25         </Console>
     26 
     27         <!--文件会打印出所有信息,这个log每次运行程序会自动清空,由append属性决定,这个也挺有用的,适合临时测试用 -->
     28         <!--append为TRUE表示消息增加到指定文件中,false表示消息覆盖指定的文件内容,默认值是true -->
     29         <File name="log" fileName="logs/test.log" append="false">
     30             <PatternLayout
     31                 pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
     32         </File>
     33         <!-- 这个会打印出所有的info及以下级别的信息,每次大小超过size, 则这size大小的日志会自动存入按年份-月份建立的文件夹下面并进行压缩,作为存档 -->
     34         <RollingFile name="RollingFileInfo" fileName="${LOG_HOME}/info.log"
     35             filePattern="${LOG_HOME}/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log">
     36             <!--控制台只输出level及以上级别的信息(onMatch),其他的直接拒绝(onMismatch) -->
     37             <ThresholdFilter level="info" onMatch="ACCEPT"
     38                 onMismatch="DENY" />
     39             <PatternLayout
     40                 pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
     41             <Policies>
     42                 <!-- 基于时间的滚动策略,interval属性用来指定多久滚动一次,默认是1 hour。 modulate=true用来调整时间:比如现在是早上3am,interval是4,那么第一次滚动是在4am,接着是8am,12am...而不是7am. -->
     43                 <!-- 关键点在于 filePattern后的日期格式,以及TimeBasedTriggeringPolicy的interval, 日期格式精确到哪一位,interval也精确到哪一个单位 -->
     44                 <!-- log4j2的按天分日志文件 : info-%d{yyyy-MM-dd}-%i.log -->
     45                 <TimeBasedTriggeringPolicy interval="1"
     46                     modulate="true" />
     47                 <!-- SizeBasedTriggeringPolicy:Policies子节点, 基于指定文件大小的滚动策略,size属性用来定义每个日志文件的大小. -->
     48                 <!-- <SizeBasedTriggeringPolicy size="2 kB" /> -->
     49             </Policies>
     50         </RollingFile>
     51 
     52         <RollingFile name="RollingFileWarn" fileName="${WARN_LOG_FILE_NAME}/warn.log"
     53             filePattern="${WARN_LOG_FILE_NAME}/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log">
     54             <ThresholdFilter level="warn" onMatch="ACCEPT"
     55                 onMismatch="DENY" />
     56             <PatternLayout
     57                 pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
     58             <Policies>
     59                 <TimeBasedTriggeringPolicy />
     60                 <SizeBasedTriggeringPolicy size="2 kB" />
     61             </Policies>
     62             <!-- DefaultRolloverStrategy属性如不设置,则默认为最多同一文件夹下7个文件,这里设置了20 -->
     63             <DefaultRolloverStrategy max="20" />
     64         </RollingFile>
     65 
     66         <RollingFile name="RollingFileError" fileName="${ERROR_LOG_FILE_NAME}/error.log"
     67             filePattern="${ERROR_LOG_FILE_NAME}/$${date:yyyy-MM}/error-%d{yyyy-MM-dd-HH-mm}-%i.log">
     68             <ThresholdFilter level="error" onMatch="ACCEPT"
     69                 onMismatch="DENY" />
     70             <PatternLayout
     71                 pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
     72             <Policies>
     73                 <!-- log4j2的按分钟 分日志文件 : warn-%d{yyyy-MM-dd-HH-mm}-%i.log -->
     74                 <TimeBasedTriggeringPolicy interval="1"
     75                     modulate="true" />
     76                 <!-- <SizeBasedTriggeringPolicy size="10 MB" /> -->
     77             </Policies>
     78         </RollingFile>
     79 
     80     </Appenders>
     81 
     82     <!--然后定义logger,只有定义了logger并引入的appender,appender才会生效 -->
     83     <Loggers>
     84         <!--过滤掉spring和mybatis的一些无用的DEBUG信息 -->
     85         <logger name="org.springframework" level="INFO"></logger>
     86         <logger name="org.mybatis" level="INFO"></logger>
     87 
     88         <!-- 第三方日志系统 -->
     89         <logger name="org.springframework" level="ERROR" />
     90         <logger name="org.hibernate" level="ERROR" />
     91         <logger name="org.apache.struts2" level="ERROR" />
     92         <logger name="com.opensymphony.xwork2" level="ERROR" />
     93         <logger name="org.jboss" level="ERROR" />
     94 
     95 
     96         <!-- 配置日志的根节点 -->
     97         <root level="all">
     98             <appender-ref ref="Console" />
     99             <appender-ref ref="RollingFileInfo" />
    100             <appender-ref ref="RollingFileWarn" />
    101             <appender-ref ref="RollingFileError" />
    102         </root>
    103 
    104     </Loggers>
    105 
    106 </Configuration>

      2.4  spring-book.xml

     1 <?xml version="1.0" encoding="UTF-8"?>
     2 <beans xmlns="http://www.springframework.org/schema/beans"
     3    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     4    xmlns:context="http://www.springframework.org/schema/context"
     5    xmlns:tx="http://www.springframework.org/schema/tx"
     6    xmlns:aop="http://www.springframework.org/schema/aop"
     7    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
     8        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
     9        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    10        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    11  
    12      <bean class="com.yuan.book.dao.BookDao" parent="baseDao" id="bookDao"></bean>
    13      <bean class="com.yuan.book.biz.impl.BookBizImpl" parent="baseBiz" id="bookBiz">
    14          <property name="bookDao" ref="bookDao"></property>
    15      </bean>
    16      <bean class="com.yuan.book.web.BookAction" parent="baseAction" id="bookAction">
    17          <property name="bookBiz" ref="bookBiz"></property>
    18      </bean>
    19      
    20 </beans>

       2.5 spring-context.xml

     1 <?xml version="1.0" encoding="UTF-8"?>
     2 <beans xmlns="http://www.springframework.org/schema/beans"
     3    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     4    xmlns:context="http://www.springframework.org/schema/context"
     5    xmlns:tx="http://www.springframework.org/schema/tx"
     6    xmlns:aop="http://www.springframework.org/schema/aop"
     7    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
     8        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
     9        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    10        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    11  
    12          <import resource="spring-hibernate.xml"/>
    13          <import resource="spring-book.xml"/>
    14  
    15 </beans>

      2.6 集成hibernate

      1 <?xml version="1.0" encoding="UTF-8"?>
      2 <beans xmlns="http://www.springframework.org/schema/beans"
      3    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      4    xmlns:context="http://www.springframework.org/schema/context"
      5    xmlns:tx="http://www.springframework.org/schema/tx"
      6    xmlns:aop="http://www.springframework.org/schema/aop"
      7    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
      8        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
      9        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
     10        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
     11  
     12      <!-- 
     13          1、注册数据库连接信息文件
     14          2、配置连接池
     15          3、配置sessionfactory
     16          4、配置事务
     17          5、配置切面
     18          6、配置通用模块
     19       -->
     20  <!-- 1、注册jdbc相关的配置文件 -->
     21     <context:property-placeholder location="classpath:db.properties" />
     22 
     23     <!-- 配置c3p0连接池 -->
     24     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
     25         <property name="user" value="${db.username}"></property>
     26         <property name="password" value="${db.password}"></property>
     27         <property name="driverClass" value="${db.driverClass}"></property>
     28         <property name="jdbcUrl" value="${db.jdbcUrl}"></property>
     29 
     30         <!--初始化时获取的连接数,取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
     31         <property name="initialPoolSize" value="${db.initialPoolSize}"></property>
     32         <!--连接池中保留的最大连接数。Default: 15 -->
     33         <property name="maxPoolSize" value="${db.maxPoolSize}"></property>
     34         <!--连接池中保留的最小连接数。 -->
     35         <property name="minPoolSize" value="${db.minPoolSize}" />
     36         <!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->
     37         <property name="maxIdleTime" value="${db.maxIdleTime}" />
     38 
     39         <!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
     40         <property name="acquireIncrement" value="${db.acquireIncrement}" />
     41 
     42         <!--JDBC的标准参数,用以控制数据源内加载的PreparedStatements数量。但由于预缓存的statements 属于单个connection而不是整个连接池。 
     43             所以设置这个参数需要考虑到多方面的因素。如果maxStatements与maxStatementsPerConnection均为0,则缓存被关闭。Default: 
     44             0 -->
     45         <property name="maxStatements" value="${db.maxStatements}" />
     46 
     47         <!--每60秒检查所有连接池中的空闲连接。Default: 0 -->
     48         <property name="idleConnectionTestPeriod" value="${db.idleConnectionTestPeriod}" />
     49 
     50         <!--定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->
     51         <property name="acquireRetryAttempts" value="${db.acquireRetryAttempts}" />
     52 
     53         <!--获取连接失败将会引起所有等待连接池来获取连接的线程抛出异常。但是数据源仍有效 保留,并在下次调用getConnection()的时候继续尝试获取连接。 
     54             如果设为true,那么在尝试 获取连接失败后该数据源将申明已断开并永久关闭。Default: false -->
     55         <property name="breakAfterAcquireFailure" value="${db.breakAfterAcquireFailure}" />
     56 
     57         <!--因性能消耗大请只在需要的时候使用它。如果设为true那么在每个connection提交的 时候都将校验其有效性。建议使用idleConnectionTestPeriod 
     58             或automaticTestTable 等方法来提升连接测试的性能。Default: false -->
     59         <property name="testConnectionOnCheckout" value="${db.breakAfterAcquireFailure}" />
     60     </bean>
     61 
     62     <!-- 3、配置sessionfactory相关信息 -->
     63     <bean id="sessionFactory"
     64         class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
     65         <!-- 数据源 -->
     66         <property name="dataSource">
     67             <ref bean="dataSource" />
     68         </property>
     69         <!-- hibernate相关属性 -->
     70         <property name="hibernateProperties">
     71             <props>
     72                 <prop key="dialect">org.hibernate.dialect.MySQLDialect</prop>
     73                 <!--spring与Hibernate集成无法显示sql语句问题,请见集成后hibernate无法显示sql语句.txt -->
     74                 <prop key="hibernate.show_sql">true</prop>
     75                 <prop key="hibernate.format_sql">true</prop>
     76             </props>
     77         </property>
     78         <!-- 实体映射文件 -->
     79         <property name="mappingResources">
     80             <list>
     81                 <value>com/yuan/book/entity/book.hbm.xml</value>
     82             </list>
     83         </property>
     84     </bean>
     85 
     86     <!-- 4、配置事务 -->
     87     <!--声明式事务配置开始 -->
     88     <!-- 
     89         静态代理:
     90             一个代理对象->一个目标对象
     91             BookProxy(BookBizImpl+myMethodBeforeAdvice)->bookBiz
     92             OrderProxy(OrderBizImpl+myMethodBeforeAdvice2)->    OrderBiz
     93         
     94         动态代理:
     95             一个代理对象->多个目标对象
     96      -->
     97     
     98     <!--1) 开启自动代理 -->
     99     <aop:aspectj-autoproxy />
    100 
    101     <!--2) 事务管理器 -->
    102     <bean id="transactionManager"
    103         class="org.springframework.orm.hibernate5.HibernateTransactionManager">
    104         <property name="sessionFactory" ref="sessionFactory" />
    105     </bean>
    106 
    107     <!--3) 定义事务特性 -->
    108     <tx:advice id="txAdvice" transaction-manager="transactionManager">
    109         <tx:attributes>
    110             <tx:method name="add*" propagation="REQUIRED" />
    111             <tx:method name="save*" propagation="REQUIRED" />
    112             <tx:method name="insert*" propagation="REQUIRED" />
    113 
    114             <tx:method name="edit*" propagation="REQUIRED" />
    115             <tx:method name="update*" propagation="REQUIRED" />
    116 
    117             <tx:method name="del*" propagation="REQUIRED" />
    118             <tx:method name="remove*" propagation="REQUIRED" />
    119 
    120             <tx:method name="load*" propagation="REQUIRED" read-only="true" />
    121             <tx:method name="list*" propagation="REQUIRED" read-only="true" />
    122             <tx:method name="select*" propagation="REQUIRED" read-only="true" />
    123             <tx:method name="query*" propagation="REQUIRED" read-only="true" />
    124 
    125             <tx:method name="do*" propagation="REQUIRED" />
    126         </tx:attributes>
    127     </tx:advice>
    128 
    129     <!--4) 定义切入点 -->
    130     <aop:config>
    131         <!-- pointcut属性用来定义一个切入点,分成四个部分理解 [* ][*..][*Biz][.*(..)] -->
    132         <!-- A: 返回类型,*表示返回类型不限 -->
    133         <!-- B: 包名,*..表示包名不限 -->
    134         <!-- C: 类或接口名,*Biz表示类或接口必须以Biz结尾 -->
    135         <!-- D: 方法名和参数,*(..)表示方法名不限,参数类型和个数不限 -->
    136         <aop:advisor advice-ref="txAdvice" pointcut="execution(* *..*Biz.*(..))" />
    137     </aop:config>
    138     <!-- 声明式事务配置结束 -->
    139     
    140     <!-- 5、配置HibernateTemplate 可以看成session -->
    141     <bean class="org.springframework.orm.hibernate5.HibernateTemplate" id="hibernateTemplate">
    142         <property name="sessionFactory" ref="sessionFactory"></property>
    143     </bean>
    144     <!-- 6、分模块开发(只配置base模块) -->
    145     <bean class="com.yuan.base.entity.BaseEntity" abstract="true" id="baseEntity"></bean>
    146     <bean class="com.yuan.base.dao.BaseDao" abstract="true" id="baseDao" >
    147         <property name="hibernateTemplate" ref="hibernateTemplate"></property>
    148     </bean>
    149     <bean class="com.yuan.base.biz.BaseBiz" abstract="true" id="baseBiz"></bean>
    150     <bean class="com.yuan.base.web.BaseAction" abstract="true" id="baseAction"></bean>
    151  
    152 </beans>

     2.7 struts-base.xml

     1 <?xml version="1.0" encoding="UTF-8"?>
     2 <!DOCTYPE struts PUBLIC
     3     "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
     4     "http://struts.apache.org/dtds/struts-2.5.dtd">
     5 <struts>
     6     <constant name="struts.i18n.encoding" value="UTF-8" />
     7     <constant name="struts.devMode" value="true" />
     8     <constant name="struts.configuration.xml.reload" value="true" />
     9     <constant name="struts.i18n.reload" value="true" />
    10     <constant name="struts.enable.DynamicMethodInvocation" value="true" />
    11 
    12     <package name="base" extends="struts-default" abstract="true">
    13         <global-allowed-methods>regex:.*</global-allowed-methods>
    14     </package>
    15 </struts>

     2.8 struts-book.xml

     1 <?xml version="1.0" encoding="UTF-8"?>
     2 <!DOCTYPE struts PUBLIC
     3     "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
     4     "http://struts.apache.org/dtds/struts-2.5.dtd">
     5 <struts>
     6     <package name="book" extends="base" namespace="/book">
     7         <action name="/book_*" class="bookAction" method="{1}">
     8         </action>
     9     </package>
    10 </struts>

     2.9 struts.xml

    1 <?xml version="1.0" encoding="UTF-8"?>
    2 <!DOCTYPE struts PUBLIC
    3     "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
    4     "http://struts.apache.org/dtds/struts-2.5.dtd">
    5 <struts>
    6     <include file="struts-default.xml"></include>
    7     <include file="struts-base.xml"></include>
    8     <include file="struts-book.xml"></include>
    9 </struts>

      最后一个web.xml配置 

     1 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
     2          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     3          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
     4          version="3.1">
     5   <display-name>Archetype Created Web Application</display-name>
     6   
     7   <!-- 1、整合spring -->
     8     <context-param>
     9         <param-name>contextConfigLocation</param-name>
    10         <param-value>classpath:spring-context.xml</param-value>
    11     </context-param>
    12     <listener>
    13         <listener-class>
    14             org.springframework.web.context.ContextLoaderListener
    15         </listener-class>
    16     </listener>
    17     <!-- 2、整合struts2 -->
    18     <filter>
    19         <filter-name>struts2</filter-name>
    20         <filter-class>
    21             org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter
    22         </filter-class>
    23     </filter>
    24     <filter-mapping>
    25         <filter-name>struts2</filter-name>
    26         <url-pattern>*.action</url-pattern>
    27     </filter-mapping>
    28 
    29     <!-- 3、添加过滤器 -->
    30     <filter>
    31         <filter-name>encodingFilter</filter-name>
    32         <filter-class>
    33             org.springframework.web.filter.CharacterEncodingFilter
    34         </filter-class>
    35         <async-supported>true</async-supported>
    36         <init-param>
    37             <param-name>encoding</param-name>
    38             <param-value>UTF-8</param-value>
    39         </init-param>
    40     </filter>
    41     <filter-mapping>
    42         <filter-name>encodingFilter</filter-name>
    43         <url-pattern>/*</url-pattern>
    44     </filter-mapping>
    45   
    46 </web-app>

    3. 程序代码的分层

      3.1 base模块


      3.1.1 biz接口--BaseBiz

       只需 创建就可以了,后期不需要进行任何操作

    package com.yuan.base.biz;
    
    public interface BaseBiz {
        
        
    }

    3.1.2 dao层--BaseDao

     1 package com.yuan.base.dao;
     2 
     3 import java.io.Serializable;
     4 import java.util.Collection;
     5 import java.util.List;
     6 import java.util.Map;
     7 
     8 import org.hibernate.Session;
     9 import org.hibernate.query.Query;
    10 import org.springframework.orm.hibernate5.support.HibernateDaoSupport;
    11 
    12 import com.yuan.base.util.PageBean;
    13 
    14 public class BaseDao extends HibernateDaoSupport implements Serializable {
    15 
    16     // public int add() {
    17     // return getHibernateTemplate().save(entity);
    18     // }
    19 
    20     public void setParam(Query query, Map<String, Object> map) {
    21         if (map == null || map.size() < 1) {
    22             return;
    23         }
    24         Object value = null;
    25         for (Map.Entry<String, Object> entry : map.entrySet()) {
    26             value = entry.getValue();
    27             if (value instanceof Collection) {
    28                 query.setParameterList(entry.getKey(), (Collection) value);
    29             } else if (value instanceof Object[]) {
    30                 query.setParameterList(entry.getKey(), (Object[]) value);
    31             } else {
    32                 query.setParameter(entry.getKey(), value);
    33             }
    34         }
    35     }
    36 
    37     public String getCountHql(String hql) {
    38         int index = hql.toUpperCase().indexOf("FROM");
    39         return "select count(*) " + hql.substring(index);
    40     }
    41 
    42     /**
    43      * 
    44      * @param hql
    45      *            已经拼装好的
    46      * @param map
    47      * @param pageBean
    48      * @return
    49      */
    50     public List executeQuery(Session session, String hql, Map<String, Object> map, PageBean pageBean) {
    51         if (pageBean != null && pageBean.isPagination()) {
    52             String countHql = getCountHql(hql);
    53             Query countQuery = session.createQuery(countHql);
    54             this.setParam(countQuery, map);
    55             pageBean.setTotal(countQuery.getSingleResult().toString());
    56 
    57             Query query = session.createQuery(hql);
    58             this.setParam(query, map);
    59             query.setFirstResult(pageBean.getStartIndex());
    60             query.setMaxResults(pageBean.getRows());
    61             List list = query.list();
    62 
    63             return list;
    64         } else {
    65             Query query = session.createQuery(hql);
    66             this.setParam(query, map);
    67             List list = query.list();
    68 
    69             return list;
    70         }
    71 
    72     }
    73 
    74 }

     3.1.3 实体--BaseEntity

     1     package com.yuan.base.entity;
     2 
     3 import java.io.Serializable;
     4 
     5 /**
     6  * 这里面存放所有实体类的共性属性
     7  *  jsp传递到后台的参数
     8  *  非数据库与表的映射关系字段属性
     9  * @author ly
    10  *
    11  */
    12 public class BaseEntity implements Serializable {
    13 
    14     
    15 }

     3.1.4 工具类

     PageBean

      1 package com.yuan.base.util;
      2 
      3 import java.util.HashMap;
      4 import java.util.Map;
      5 
      6 import javax.servlet.http.HttpServlet;
      7 import javax.servlet.http.HttpServletRequest;
      8 
      9 
     10 public class PageBean {
     11 
     12     private int page = 1;
     13 
     14     private int rows = 10;
     15 
     16     private int total = 0;
     17 
     18     private boolean pagination = true;
     19 
     20     private Map<String, String[]>  paMap = new HashMap<>();
     21     
     22     private String url;
     23     
     24     public void setRequest(HttpServletRequest req) {
     25         Map<String, String[]> parameterMap = req.getParameterMap();
     26         StringBuffer url = req.getRequestURL();
     27         
     28         this.setPaMap(req.getParameterMap());
     29         this.setUrl(req.getRequestURL().toString());
     30         
     31         this.setPage(req.getParameter("page"));
     32     }
     33     
     34     
     35     private void setPage(String page) {
     36         this.page = StringUtils.isNotBlank(page) ? Integer.valueOf(page):this.page;
     37         
     38     }
     39 
     40     
     41     public void setPagination(String pagination) {
     42         this.pagination = StringUtils.isNotBlank(pagination) ? !"false".equals(pagination):this.pagination;
     43         
     44     }
     45 
     46     
     47     public void setRows(String rows) {
     48         this.rows = StringUtils.isNotBlank(rows)?Integer.valueOf(rows):this.rows;
     49         
     50     }
     51 
     52     public Map<String, String[]> getPaMap() {
     53         return paMap;
     54     }
     55 
     56     public void setPaMap(Map<String, String[]> paMap) {
     57         this.paMap = paMap;
     58     }
     59 
     60     public String getUrl() {
     61         return url;
     62     }
     63 
     64     public void setUrl(String url) {
     65         this.url = url;
     66     }
     67 
     68     public PageBean() {
     69         super();
     70     }
     71 
     72     public int getPage() {
     73         return page;
     74     }
     75 
     76     public void setPage(int page) {
     77         this.page = page;
     78     }
     79 
     80     public int getRows() {
     81         return rows;
     82     }
     83 
     84     public void setRows(int rows) {
     85         this.rows = rows;
     86     }
     87 
     88     public int getTotal() {
     89         return total;
     90     }
     91 
     92     public void setTotal(int total) {
     93         this.total = total;
     94     }
     95 
     96     public void setTotal(String total) {
     97         this.total = Integer.parseInt(total);
     98     }
     99 
    100     public boolean isPagination() {
    101         return pagination;
    102     }
    103 
    104     public void setPagination(boolean pagination) {
    105         this.pagination = pagination;
    106     }
    107 
    108     
    109     public int getStartIndex() {
    110         return (this.page - 1) * this.rows;
    111     }
    112 
    113     @Override
    114     public String toString() {
    115         return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", pagination=" + pagination + "]";
    116     }
    117 
    118     
    119     public int getMaxPage() {
    120         
    121         return this.total % this.rows == 0 ? this.total / this.rows : this.total / this.rows+1;
    122     }
    123     
    124     
    125     public int getNexPage() {
    126         
    127         return this.page < this.getMaxPage() ? this.page+1 : this.page;
    128     }
    129     
    130     
    131     public int getPreviousPage() {
    132         
    133         return this.page > 1 ? this.page-1 : this.page; 
    134     }
    135     
    136 }

      StringUtils

     1 package com.yuan.base.util;
     2 
     3 public class StringUtils {
     4     // 私有的构造方法,保护此类不能在外部实例化
     5     private StringUtils() {
     6     }
     7 
     8     /**
     9      * 如果字符串等于null或去空格后等于"",则返回true,否则返回false
    10      * 
    11      * @param s
    12      * @return
    13      */
    14     public static boolean isBlank(String s) {
    15         boolean b = false;
    16         if (null == s || s.trim().equals("")) {
    17             b = true;
    18         }
    19         return b;
    20     }
    21     
    22     /**
    23      * 如果字符串不等于null或去空格后不等于"",则返回true,否则返回false
    24      * 
    25      * @param s
    26      * @return
    27      */
    28     public static boolean isNotBlank(String s) {
    29         return !isBlank(s);
    30     }
    31 
    32 }

    3.1.5 web层--BaseAction

     1 package com.yuan.base.web;
     2 
     3 import java.io.Serializable;
     4 
     5 import javax.servlet.ServletContext;
     6 import javax.servlet.http.HttpServletRequest;
     7 import javax.servlet.http.HttpServletResponse;
     8 import javax.servlet.http.HttpSession;
     9 
    10 import org.apache.struts2.interceptor.ServletRequestAware;
    11 import org.apache.struts2.interceptor.ServletResponseAware;
    12 
    13 public class BaseAction implements ServletRequestAware, ServletResponseAware, Serializable {
    14     private static final long serialVersionUID = -7110462505161900879L;
    15     /**
    16      * 为了传值使用
    17      */
    18     protected HttpServletResponse response;
    19     protected HttpServletRequest request;
    20     protected HttpSession session;
    21     protected ServletContext application;
    22 
    23     /**
    24      * 为了配置跳转页面所用
    25      */
    26     protected final static String SUCCESS = "success";
    27     protected final static String FAIL = "fail";
    28     protected final static String LIST = "list";
    29     protected final static String ADD = "add";
    30     protected final static String EDIT = "edit";
    31     protected final static String DETAIL = "detail";
    32 
    33     /**
    34      * 具体传值字段 后端向jsp页面传值所用字段
    35      */
    36     protected Object result;
    37     protected Object msg;
    38     protected int code;
    39 
    40     public Object getResult() {
    41         return result;
    42     }
    43 
    44     public Object getMsg() {
    45         return msg;
    46     }
    47 
    48     public int getCode() {
    49         return code;
    50     }
    51 
    52     @Override
    53     public void setServletResponse(HttpServletResponse arg0) {
    54         this.response = arg0;
    55 
    56     }
    57 
    58     @Override
    59     public void setServletRequest(HttpServletRequest arg0) {
    60         this.request = arg0;
    61         this.session = arg0.getSession();
    62         this.application = arg0.getServletContext();
    63     }
    64 }

     3.2 book模块

     3.2.1 biz接口--BooKBiz

     1 package com.yuan.book.biz;
     2 
     3 import java.util.List;
     4 
     5 import com.yuan.book.entity.Book;
     6 
     7 public interface BookBiz {
     8 
     9     public int add(Book book);
    10 
    11     public void edit(Book book);
    12 
    13     public void del(Book book);
    14 
    15     public List<Book> list();
    16 
    17 }

    3.2.2 biz接口实现类--BookBizImpl

       
      1 package com.yuan.book.biz.impl;
      2 
      3 import java.util.List;
      4 
      5 import com.yuan.book.biz.BookBiz;
      6 import com.yuan.book.dao.BookDao;
      7 import com.yuan.book.entity.Book;
      8 
      9 
     10 /**
     11  * pointcut="execution(* *..*Biz.*(..))"
     12  * 为什么切面要切在biz上面而不能切在dao层上?
     13  *   明确切面的作用:
     14  *         切面的目的是为了在目标对象的方法定义事务特性(add/del/edit/list)
     15  *         给上面所列举的方法开启或提交事务等等
     16  *         
     17  *  举例说明切在biz与切在dao层上的区别
     18  *   web层:
     19  *       MoneyAction.transfer(){
     20  *           MoneyBiz.transfer(User u1,User u2);
     21  *       }
     22  *   biz层:
     23  *       MoneyBiz.transfer(User u1,User u2){
     24  *       MoneyDao.edit(u1);
     25  *       MoneyDao.edit(u2);
     26  *       }
     27  *       
     28  *   dao层:
     29  *       MoneyDao.edit(User u)
     30  *   
     31  *   
     32  *   银行转账的例子
     33  *   如果是切在dao层上:
     34  *       SSH解读程序员所写的代码
     35  *   biz层:
     36  *       MoneyBiz.transfer(User u1,User u2){
     37  *       Transation t1= session.beginTransation();
     38  *       MoneyDao.edit(u1);
     39  *       t1.commit();
     40  *       Transation t2= session.beginTransation();
     41  *       MoneyDao.edit(u2);
     42  *       t2.commit();
     43  *       }
     44  *   从上面代码可以看出,一个转账功能处于两个事务当中!
     45  *   
     46  *      如果     MoneyDao.edit(u1);  这里发生了异常
     47  *               MoneyDao.edit(u2);
     48  *   
     49  *   如果切在biz层上:
     50  *       web层:
     51  *       MoneyAction.transfer(){
     52  *       Transation t= session.beginTransation();
     53  *           MoneyDao.edit(u1);  出现异常
     54  *          MoneyDao.edit(u2);
     55  *         t.commit();
     56  *       }
     57  *    
     58  *    总:如果切在dao层上,一个方法可能会出现多个事务提交,
     59  *        在执行到中间位置时出现异常
     60  *        会导致后面的还没有开始运行,
     61  *        而前面的就已经提交了。
     62  *        
     63  *        如果切在biz层上,只需一个事务提交,
     64  *        中间出现异常不会提交事务,
     65  *        执行完后再提交事务,方便于事务回滚
     66  *        
     67  * @author ly
     68  *
     69  */
     70 public class BookBizImpl implements BookBiz {
     71 
     72     private BookDao bookDao;
     73 
     74     public BookDao getBookDao() {
     75         return bookDao;
     76     }
     77 
     78     public void setBookDao(BookDao bookDao) {
     79         this.bookDao = bookDao;
     80     }
     81 
     82     @Override
     83     public int add(Book book) {
     84         return bookDao.add(book);
     85     }
     86 
     87     @Override
     88     public void edit(Book book) {
     89         bookDao.edit(book);
     90     }
     91 
     92     @Override
     93     public void del(Book book) {
     94         bookDao.del(book);
     95     }
     96 
     97     @Override
     98     public List<Book> list() {
     99         return bookDao.list();
    100     }
    101 
    102 }

    3.2.3 dao层--BookDao

     1 package com.yuan.book.dao;
     2 
     3 import java.util.List;
     4 
     5 import org.hibernate.HibernateException;
     6 import org.hibernate.Session;
     7 import org.springframework.orm.hibernate5.HibernateCallback;
     8 
     9 import com.yuan.base.dao.BaseDao;
    10 import com.yuan.book.entity.Book;
    11 
    12 /**
    13  * 注意: 1、必须继承BaseDao,是为了获取到hibernateTemplate 2、方法命名有讲究(一定要符合声明式事务所定义的规则)
    14  * 如果不遵守命名规则,那么数据是不会提交到数据库的 3、hibernateTemplate模板在执行查询的时候比较特殊
    15  * 
    16  * @author ly
    17  * 
    18  *
    19  */
    20 public class BookDao extends BaseDao {
    21 
    22     public int add(Book book) {
    23         return (int) getHibernateTemplate().save(book);
    24     }
    25 
    26     public void edit(Book book) {
    27         getHibernateTemplate().update(book);
    28     }
    29 
    30     public void del(Book book) {
    31         getHibernateTemplate().delete(book);
    32     }
    33 
    34     public List<Book> list(){
    35         return (List<Book>)getHibernateTemplate().execute(new HibernateCallback<List<Book>>() {
    36 
    37             @Override
    38             public List<Book> doInHibernate(Session session) throws HibernateException {
    39                 return session.createQuery("from Book").list();
    40             }
    41             
    42         });
    43     }
    44 
    45 }

     3.2.4 实体

     Book

     1 package com.yuan.book.entity;
     2 
     3 import java.io.Serializable;
     4 import java.util.HashSet;
     5 import java.util.Set;
     6 
     7 /**
     8  * 一对多,一本书对应多种书本类型
     9  * @author ly
    10  *
    11  */
    12 public class Book implements Serializable{
    13 //    book_id int primary key auto_increment,
    14 //       book_name varchar(50) not null,
    15 //       price float not null
    16     private Integer bookId;
    17     private String bookName;
    18     private Float price;
    19     
    20 
    21     public Integer getBookId() {
    22         return bookId;
    23     }
    24 
    25     public void setBookId(Integer bookId) {
    26         this.bookId = bookId;
    27     }
    28 
    29     public String getBookName() {
    30         return bookName;
    31     }
    32 
    33     public void setBookName(String bookName) {
    34         this.bookName = bookName;
    35     }
    36 
    37     public Float getPrice() {
    38         return price;
    39     }
    40 
    41     public void setPrice(Float price) {
    42         this.price = price;
    43     }
    44 
    45 
    46     @Override
    47     public String toString() {
    48         return "Book [bookId=" + bookId + ", bookName=" + bookName + ", price=" + price + "]";
    49     }
    50 
    51     public Book(Integer bookId, String bookName) {
    52         super();
    53         this.bookId = bookId;
    54         this.bookName = bookName;
    55     }
    56 
    57     public Book() {
    58         super();
    59     }
    60     
    61     
    62 }

     book.hbm.xml

     1 <?xml version="1.0" encoding="UTF-8"?>
     2 <!DOCTYPE hibernate-mapping PUBLIC 
     3     "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
     4     "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
     5 <hibernate-mapping>
     6 
     7 
     8 <class table="t_hibernate_book" name="com.yuan.book.entity.Book">
     9 
    10 
    11 <id name="bookId" column="book_id" type="java.lang.Integer">
    12 
    13 <generator class="increment"/>
    14 
    15 </id>
    16 
    17 <property name="bookName" column="book_name" type="java.lang.String"> </property>
    18 
    19 <property name="price" column="price" type="java.lang.Float"> </property>
    20 
    21 <!-- set标签 table:对应的是中间表,没有实体类的,意味着靠两张主表对应的映射文件联合管理数据 name:当前映射文件对应的实体类对应的属性 cascade:级联新增修改,说白了就是当前实体类对应的表删除能否影响到关联表的数据 inberse:中间表的数据维护的权利交给对方 key标签 column:当前表t_hibernate_book_category的主键book_id在中间表的列段bidmany-to-many:column:代表中间表对应的除去当前表t_hibernate_book的非主键的中间列段cidclass:cid对应的类 <set table="t_hibernate_book_category" name="categories" cascade="save-update" inverse="true">one<key column="bid"></key>many<many-to-many column="cid" class="com.jt4.entity.Category"></many-to-many></set> -->
    22 
    23 
    24 </class>
    25 
    26 </hibernate-mapping>

    3.2.5 web层--BookAction

     1 package com.yuan.book.web;
     2 
     3 import java.util.List;
     4 
     5 import com.opensymphony.xwork2.ModelDriven;
     6 import com.yuan.base.web.BaseAction;
     7 import com.yuan.book.biz.BookBiz;
     8 import com.yuan.book.entity.Book;
     9 
    10 public class BookAction extends BaseAction implements ModelDriven<Book> {
    11 
    12     private Book book = new Book();
    13     private BookBiz bookBiz;
    14 
    15     @Override
    16     public Book getModel() {
    17         // TODO Auto-generated method stub
    18         return book;
    19     }
    20     
    21     public BookBiz getBookBiz() {
    22         return bookBiz;
    23     }
    24 
    25     public void setBookBiz(BookBiz bookBiz) {
    26         this.bookBiz = bookBiz;
    27     }
    28 
    29     public String add() {
    30         System.out.println(book);
    31         this.bookBiz.add(book);
    32         return null;
    33     }
    34     
    35     public String edit() {
    36         System.out.println(book);
    37         this.bookBiz.edit(book);
    38         return null;
    39     }
    40     
    41     public String del() {
    42         System.out.println(book);
    43         this.bookBiz.del(book);
    44         return null;
    45     }
    46     
    47     public String list() {
    48         List<Book> list2 = this.bookBiz.list();
    49         for (Book b : list2) {
    50             System.out.println(b);
    51         }
    52         return null;
    53     }
    54     
    55     
    56     
    57 }

     

    4. 整合案例演示

     4.1 查询演示

     

    4.2 新增演示

     
     

    4.3 修改演示

     
     

     4.4 删除演示

     
     
     
     
     

    谢谢观看!!!

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  • 原文地址:https://www.cnblogs.com/ly-0919/p/11366698.html
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