我们接下来开始编写我们的权限系统,以便进一步熟悉SSM,接下来按照第一篇起一个maven项目,项目简介如下,接下来看一下配置文件
web.xml
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0" metadata-complete="false"> <display-name>Archetype Created Web Application</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!--配置前端控制器--> <servlet> <servlet-name>SpringMvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--配置初始化参数--> <init-param> <param-name>contextConfigLocation</param-name> <!--加载的主配置文件--> <param-value>classpath:applicationContext.xml</param-value> </init-param> <!--设置项目启动时加载框架,如果不设置,就会在第一次发请求是加载--> <load-on-startup>1</load-on-startup> </servlet> <!--设置拦截路径--> <servlet-mapping> <servlet-name>SpringMvc</servlet-name> <!--拦截所有--> <url-pattern>/</url-pattern> </servlet-mapping> <!--配置编码过滤器--> <filter> <filter-name>CharacterEncoding</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>utf-8</param-value> </init-param> </filter> <!--将所有路径进行解码--> <filter-mapping> <filter-name>CharacterEncoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
接下来看一下spring配置文件
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> <!--注解扫描,这是扫描的包路径--> <context:component-scan base-package="com.yang" /> <!--导入mybatis的配置--> <import resource="classpath:application-mybatis" /> <!--导入springMvc配置--> <import resource="classpath:application-mvc.xml" /> </beans>
数据库属性文件
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/promission?characterEncoding=utf-8
jdbc.username=root
jdbc.password=mysql
mybatis的配置文件
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd "> <!--加载数据库属性文件--> <context:property-placeholder location="classpath:db.properties" /> <!--配置德鲁伊连接吃--> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <property name="initialSize" value="5" /> <!--属性文件中的名称不能跟property的name一样,因此一般这个属性文件名称前面会加上jdbc--> <property name="driverClassName" value="${jdbc.driver}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> </bean> <!--配置事务管理--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!--设置数据源--> <property name="dataSource" ref="dataSource" /> </bean> <!--开启注解事务--> <tx:annotation-driven transaction-manager="transactionManager" /> <!--配置Mybatis工厂--> <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!--核心配置文件位置--> <property name="configLocation" value="classpath:sqlMapConfig.xml" /> <!--配置mapper映射文件的路径--> <property name="mapperLocations" value="classpath:com.yang.mapper" /> </bean> <!--配置Mapper接口扫描--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--设置mapper接口包的位置--> <property name="basePackage" value="com.yang.mapper" /> </bean> </beans>
springMvc配置文件
<?xml version="1.0" encoding="UTF-8" ?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd "> <!--主要就是为了Spring MVC来用的,提供Controller请求转发,json自动转换等功能--> <mvc:annotation-driven /> <!--静态资源处理--> <mvc:default-servlet-handler /> <!--视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views" /> <property name="suffix" value=".jsp" /> </bean> <!--配置拦截器,先注释,到时候写的时候在进行配置--> <!-- <mvc:interceptors>--> <!-- <mvc:interceptor>--> <!-- <mvc:mapping path="/*/" />--> <!-- </mvc:interceptor>--> <!-- </mvc:interceptors>--> <!--配置文件上传解析器--> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!--设置上传最大文件大小--> <property name="maxUploadSize"> <value>10240000</value> </property> </bean> </beans>
sqlMapConfig
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings> <!--设置sql语句输出到终端--> <setting name="logImpl" value="STDOUT_LOGGING"/> </settings> <typeAliases> <!-- 批量别名定义,扫描整个包下的类,别名为类名(大小写不敏感) --> <package name="com.yang.domain" /> </typeAliases> <plugins> <!--配置分页插件--> <plugin interceptor="com.github.pagehelper.PageHelper" /> </plugins> </configuration>
最后看一下可以根据数据库帮助我们生成mapper接口以及xml文件的插件的配置
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"> <!-- 配置生成器 --> <generatorConfiguration> <!--targetRuntime有两个参数一个是MyBatis3Simple只生成简单的增删改查,另外一个会生成很多操作, 但那些基本都是我们自己编写,一次一般只使用MyBatis3Simple--> <context id="mysql" defaultModelType="hierarchical" targetRuntime="MyBatis3Simple"> <!-- 自动识别数据库关键字, 默认false,如果设置为true, 根据SqlReservedWords中定义的关键字列表; 一般保留默认值, 遇到数据库关键字(Java关键字), 使用columnOverride覆盖 --> <property name="autoDelimitKeywords" value="false" /> <!-- 生成的Java文件的编码 --> <property name="javaFileEncoding" value="UTF-8" /> <!-- 格式化java代码 --> <property name="javaFormatter" value="org.mybatis.generator.api.dom.DefaultJavaFormatter" /> <!-- 格式化XML代码 --> <property name="xmlFormatter" value="org.mybatis.generator.api.dom.DefaultXmlFormatter" /> <!-- beginningDelimiter和endingDelimiter:指明数据库的用于标记数据库对象名的符号, 比如ORACLE就是双引号,MYSQL默认是`反引号; --> <property name="beginningDelimiter" value="`" /> <property name="endingDelimiter" value="`" /> <!--阻止生成日期和注释--> <commentGenerator> <property name="suppressDate" value="true" /> <property name="suppressAllComments" value="true" /> </commentGenerator> <!-- 数据库连接信息 --> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql:///promission" userId="root" password="mysql" /> <!-- java类型处理器 用于处理数据库中的类型到Java中的类型, 默认使用JavaTypeResolverDefaultImpl; 注意一点,默认会先尝试使用Integer,Long,Short等来对应DECIMAL和NUMERIC数据类型; --> <javaTypeResolver type="org.mybatis.generator.internal.types.JavaTypeResolverDefaultImpl"> <!-- true:使用BigDecimal对应DECIMAL和 NUMERIC数据类型 false:默认, scale>0;length>18:使用BigDecimal; scale=0;length[10,18]:使用Long; scale=0;length[5,9]:使用Integer; scale=0;length<5:使用Short; --> <property name="forceBigDecimals" value="false" /> </javaTypeResolver> <!-- 配置domain生成策略 targetProject:把自动生成的domain放在哪个工程里面 targetPackage:哪个包下 --> <javaModelGenerator targetPackage="com.yang.domain" targetProject="src/main/java"> <!-- for MyBatis3/MyBatis3Simple 自动为每一个生成的类创建一个构造方法, 构造方法包含了所有的field;而不是使用setter; --> <property name="constructorBased" value="false" /> <!-- for MyBatis3 / MyBatis3Simple 是否创建一个不可变的类,如果为true, 那么MBG会创建一个没有setter方法的类, 取而代之的是类似constructorBased的类 --> <property name="immutable" value="false" /> <!-- 设置是否在getter方法中, 对String类型字段调用trim()方法 --> <property name="trimStrings" value="true" /> </javaModelGenerator> <!-- 配置mapper.xml的生成策略 targetPackage:把自动生成的mapper放在哪个工程里面 targetProject:哪个包下 --> <sqlMapGenerator targetPackage="com.yang.mapper" targetProject="src/main/java"> <!-- 在targetPackage的基础上, 根据数据库的schema再生成一层package, 最终生成的类放在这个package下,默认为false --> <property name="enableSubPackages" value="true" /> </sqlMapGenerator> <!--mapper接口生成策略--> <javaClientGenerator targetPackage="com.yang.mapper" type="XMLMAPPER" targetProject="src/main/java"> <property name="enableSubPackages" value="true" /> </javaClientGenerator> <!--指定生成那个表--> <table tableName="user"></table> </context> </generatorConfiguration>
文件结尾,我们看一下maven的项目依赖
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.yang</groupId> <artifactId>promissionPro</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>promissionPro Maven Webapp</name> <!-- FIXME change it to the project's website --> <url>http://www.example.com</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.8</maven.compiler.source> <maven.compiler.target>1.8</maven.compiler.target> <!--定义版本号 ${org.springframework.version}--> <org.springframework.version>5.2.3.RELEASE</org.springframework.version> <org.mybatis.version>3.5.3</org.mybatis.version> </properties> <dependencies> <!--单元测试--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> <!--lombok--> <!--Lombok能通过注解的方式,在编译时自动为属性生成构造器、getter/setter、equals、hashcode、toString方法。--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.10</version> </dependency> <!-- servlet-api --> <!--用到HttpServletRequest和HttpServletResponse等对象,这些对象都是要靠这个jar包才能使用的--> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <!--mysql驱动--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.19</version> </dependency> <!-- druid --> <!--阿里云德鲁伊连接池--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.21</version> </dependency> <!-- common-lang --> <!--commons-lang主要目的是提供更多的工具类,其实也就是方便我们的开发--> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> </dependency> <!--spring 框架--> <!--spring-test--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${org.springframework.version}</version> <scope>test</scope> </dependency> <!--spring-core--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${org.springframework.version}</version> </dependency> <!--spring-context--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${org.springframework.version}</version> </dependency> <!--spring-context-support--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${org.springframework.version}</version> </dependency> <!--spring-expression--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>${org.springframework.version}</version> </dependency> <!--spring-jdbc--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${org.springframework.version}</version> </dependency> <!--spring-tx--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${org.springframework.version}</version> </dependency> <!--spring-web--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${org.springframework.version}</version> </dependency> <!--spring-aop--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${org.springframework.version}</version> </dependency> <!--spring-webmvc--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${org.springframework.version}</version> </dependency> <!-- aspectj --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.9.5</version> </dependency> <!--aspectj weaver--> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.9.5</version> </dependency> <!-- cglib --> <!--动态代理包--> <dependency> <groupId>cglib</groupId> <artifactId>cglib</artifactId> <version>3.3.0</version> </dependency> <!--mybatis包--> <!-- mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>${org.mybatis.version}</version> </dependency> <!--mybatis-spring--> <!--整合mybatis以及spring框架--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.3</version> </dependency> <!--实现基本的序列化和反序列化--> <!-- jackson-core --> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.10.2</version> </dependency> <!--jackson-databind--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.10.2</version> </dependency> <!--jackson-annotations--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.10.2</version> </dependency> <!--提供日志整合--> <!--slf4j-api--> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.6</version> </dependency> <!--slf4j-log4j12--> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.6</version> </dependency> <!--log4j--> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <!--上传文件--> <!--commons-fileupload--> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.4</version> </dependency> <!--就是在jsp文件中提供特殊标签,for循环,if判断等--> <!-- jstl --> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!--JSP 标准标签库--> <!-- standard --> <dependency> <groupId>taglibs</groupId> <artifactId>standard</artifactId> <version>1.1.2</version> </dependency> <!--mybatis分页组件--> <!--pagehelper--> <dependency> <groupId>com.github.pagehelper</groupId> <artifactId>pagehelper</artifactId> <version>5.1.11</version> </dependency> </dependencies> <build> <finalName>promissionPro</finalName> <!--这个是mybatis的一个插件,这个插件可以帮助我们根据数据库自动创建pojo类,以及我们的映射接口以及xml文件--> <!--注意这个插件不要添加到pluginManagement标签中,否则没有作用--> <plugins> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.4.0</version> <configuration> <verbose>true</verbose> <overwrite>false</overwrite> </configuration> <!--因为需要连接数据库,所以需要提供mysql的支持--> <dependencies> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.19</version> </dependency> </dependencies> </plugin> </plugins> <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --> <plugins> <plugin> <artifactId>maven-clean-plugin</artifactId> <version>3.1.0</version> </plugin> <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>3.0.2</version> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.22.1</version> </plugin> <plugin> <artifactId>maven-war-plugin</artifactId> <version>3.2.2</version> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.5.2</version> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.8.2</version> </plugin> </plugins> </pluginManagement> </build> </project>