• SSM三大框架整合梳理


    整合步骤

    0、搭建动态web项目

    1、需要的jar包

    1. spring(包括springmvc)
    2. mybatis相关jar包
    3. mybatis与spring的整合包(个人建议尽量使用高版本的,避免出现一些奇怪的错误mybatis-spring-2.0.2.jar)
    4. 数据库驱动包(mysql-connector-java-5.1.44.jar)
    5. 第三方连接池(druid-1.1.10.jar,也可用spring的dbcp连接池或c3p0连接池c3p0-0.9.5.2.jar)
    6. json依赖包Jackson
    7. jstl标签库

    以下为可选
    8. 另外,若要使用mybatis逆向工程,需导入mybatis-generator-core-1.3.5.jar以及增加配置文件mbg.xml

    <?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">
    
    <generatorConfiguration>
    
    	<context id="DB2Tables" targetRuntime="MyBatis3">
    		<commentGenerator>
    			<property name="suppressAllComments" value="true" />
    		</commentGenerator>
    
    		<!-- 配置数据库连接 -->
    		<jdbcConnection driverClass="com.mysql.jdbc.Driver"
    			connectionURL="jdbc:mysql://localhost:3306/ssm_crud" userId="root"
    			password="123">
    		</jdbcConnection>
    
    		<javaTypeResolver>
    			<property name="forceBigDecimals" value="false" />
    		</javaTypeResolver>
    
    		<!-- 指定Javabean生成的位置 -->
    		<javaModelGenerator targetPackage="com.fei.pojo"
    			targetProject=".srcmainjava">
    			<property name="enableSubPackages" value="true" />
    			<property name="trimStrings" value="true" />
    		</javaModelGenerator>
    
    		<!-- 指定sql映射文件生成的位置 -->
    		<sqlMapGenerator targetPackage="mapper"
    			targetProject=".srcmain
    esources">
    			<property name="enableSubPackages" value="true" />
    		</sqlMapGenerator>
    
    		<!-- 指定mapper(dao)接口生成的位置 -->
    		<javaClientGenerator type="XMLMAPPER"
    			targetPackage="com.fei.mapper" targetProject=".srcmainjava">
    			<property name="enableSubPackages" value="true" />
    		</javaClientGenerator>
    
    		<!-- 指定每个表的生成策略 -->
    		<table tableName="tbl_emp" domainObjectName="Employee"></table>
    		<table tableName="tbl_dept" domainObjectName="Department"></table>
    
    	</context>
    </generatorConfiguration>
    

    还有核心主程序

    package com.fei.test;
    
    import java.io.File;
    import java.util.ArrayList;
    import java.util.List;
    
    import org.mybatis.generator.api.MyBatisGenerator;
    import org.mybatis.generator.config.Configuration;
    import org.mybatis.generator.config.xml.ConfigurationParser;
    import org.mybatis.generator.internal.DefaultShellCallback;
    
    /**
     * mybatis代码生成主程序
     * @Author xiaofei
     * @CreateDate 2019年9月2日
     */
    public class MBGTest {
    	
    	public static void main(String[] args) throws Exception {
    		
    		List<String> warnings = new ArrayList<String>();
    		boolean overwrite = true;
    		File configFile = new File("mybatis-generator.xml");
    		ConfigurationParser cp = new ConfigurationParser(warnings);
    		Configuration config = cp.parseConfiguration(configFile);
    		DefaultShellCallback callback = new DefaultShellCallback(overwrite);
    		MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
    		myBatisGenerator.generate(null);
    		
    		System.out.println("代码生成完毕!请查收");
    	}
    }
    
    
    1. 若要使用分页插件,还需导入pagehelper-5.1.2.jar和jsqlparser-1.0.jar
    2. 若要使用文件上传还要另外导相关的包

    2、整合思路

    1. dao层
      • sqlMapConfig.xml,空文件即可,但是需要文件头
      • applicationContext-dao.xml
        • 数据库连接池druid
        • sqlSessionFactory对象,需要spring和mybatis整合包下的
        • 配置mapper文件扫描器,Mapper动态代理开发增强版
    2. service层
      • applicationContext-service.xml:配置包扫描器,扫描@service注解的组件类
      • applicationContext-tx.xml配置事务
    3. web层
      • springmvc.xml:核心三大组件
    4. web.xml:前端控制器、拦截器、编码过滤器等
      也可以将dao层和service层的配置在一个文件中

    下面是配置文件,我把dao层的applicationContext-dao.xml和applicationContext-service.xml写到一个配置文件spring-mybatis.xml中

    3、配置文件编写

    1. applicationContext.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xmlns="http://www.springframework.org/schema/beans"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:aop="http://www.springframework.org/schema/aop"
    	xmlns:tx="http://www.springframework.org/schema/tx"
    	xmlns:util="http://www.springframework.org/schema/util"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
    						http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd 
    						http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd 
    						http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd 
    						http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.3.xsd ">
    	
    	<!-- spring的配置文件,这里主要配置业务和逻辑有关的配置,包括数据源,事务控制 -->
    	<context:component-scan base-package="com.fei.service">
    		<!-- <context:exclude-filter type="annotation" expression=" org.springframework.stereotype.Controller"/> -->
    	</context:component-scan>
    	
    	<!-- ==================数据源的配置start================== -->
    	<!-- 告诉spring让他去读取db.properties配置文件 -->
    	<context:property-placeholder location="classpath:db.properties"/>
    	<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
    		<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>
    	<!-- ==================数据源的配置end================== -->
    
    
    	<!-- ==============配置spring和mybatis的整合start============== -->
    	<!-- MyBatis工厂 -->
    	<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
    		<property name="dataSource" ref="dataSource"/>
    		<!-- 指定mybatis核心配置文件的位置 -->
    		<property name="configLocation" value="classpath:sqlMapConfig.xml"/>
    		<!-- 指定mapper文件的位置 -->
    		<property name="mapperLocations" value="classpath:mapper/*.xml"/>
    	</bean>
    
    	<!-- 配置扫描器,将mybatis接口的实现(一个代理对象)加入到ioc容器中,Mapper动态代理开发,扫描 -->
    	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    		<!-- 指定基本包,扫描所有mapper接口的实现,加入到ioc容器中 -->
    		<property name="basePackage" value="com.fei.mapper"/>
    	</bean>
    	
    	<!-- 配置一个可以执行批量操作的sqlSession -->
    	<bean id="sqlSession" class=" org.mybatis.spring.SqlSessionTemplate">
    		<constructor-arg name="sqlSessionFactory" ref="sqlSessionFactoryBean"/>
    		<constructor-arg name="executorType" value="BATCH"/>
    	</bean>
    	<!-- ==============配置spring和mybatis的整合end============== -->
    
    
    	<!-- ====================事务控制的配置start==================== -->
    	<!-- 注解事务 -->
    	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    		<!-- 控制住数据源里面连接的开启、关闭、回滚等操作 -->
    		<property name="dataSource" ref="dataSource"/>
    	</bean>
    	<!-- 1)开启基于注解的事务 -->
    	<!-- <tx:annotation-driven transaction-manager="transactionManager"/> -->
    	<!-- 2)开启基于xml配置的事务(比较重要的都是用配置形式) -->
    	<aop:config>
    		<!-- 切入点表达式 -->
    		<aop:pointcut expression="execution(* com.fei.service..*(..))" id="txPoint"/>
    		<!-- 配置事务增强 -->
    		<aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
    	</aop:config>
    	<!-- 配置事务增强,事务如何切入 -->
    	<tx:advice id="txAdvice" transaction-manager="transactionManager">
    		<tx:attributes>
    			<!-- 所有的方法都是事务方法 -->
    			<tx:method name="*"/>
    			<tx:method name="get*" read-only="true"/>
    		</tx:attributes>
    	</tx:advice>
    	<!-- ====================事务控制的配置end==================== -->
    	
    	
    	<!-- spring配置文件核心点(数据源,与mybatis的整合,事务控制) -->
    		
    	<!-- springmvc的异常处理器 -->
    	<!-- <bean class="com.fei.exception.CustomExceptionResolver"/> -->
    
    </beans>
    

    1. springmvc.xml
    <?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.xsd">
                            
    	<!-- springmvc的配置文件,主要包含网站跳转的逻辑控制 -->
    	
    	<!-- 配置controller扫描,精准扫描 -->
    	<context:component-scan base-package="com.fei.controller" />
    
    	<!-- 定义视图文件解析器 -->
    	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    		<property name="prefix" value="/WEB-INF/jsp/" />
    		<property name="suffix" value=".jsp" />
    	</bean>
    	
    	<!-- 两个标准配置 -->
    	<!-- 将springmvc不能处理的请求交给tomcat -->
    	<mvc:default-servlet-handler/>
    	<!-- 能支持一些springmvc更高级的一些功能,JSR303校验,快捷的ajax...,映射动态请求 -->
    	<mvc:annotation-driven/>
    	
    	<!-- ================ 上面是springmvc的基本配置 ================ -->
    	<!-- 对静态资源放行 -->
    	<!-- <mvc:resources location="/css/" mapping="/css/**"/>
    	<mvc:resources location="/js/" mapping="/js/**"/>
    	<mvc:resources location="/fonts/" mapping="/fonts/**"/>
    	<mvc:resources location="/img/" mapping="/img/**"/>
    	<mvc:resources location="/bower_components/" mapping="/bower_components/**"/>
    	<mvc:resources location="/dist/" mapping="/dist/**"/>
    	<mvc:resources location="/plugins/" mapping="/plugins/**"/>  -->
    	
    	<!-- 配置拦截器(多个) -->
        <!-- <mvc:interceptors>
            <mvc:interceptor>
                <mvc:mapping path="/**"/>
                <mvc:exclude-mapping path="/login"/>
                <mvc:exclude-mapping path="/static/**"/>
                <bean class="com.fei.ssmcrm.interceptor.LoginInterceptor"/>
            </mvc:interceptor>
        </mvc:interceptors> -->
        
        <!-- 读取配置文件,解决硬编码问题 -->
    	<!-- <context:property-placeholder location="classpath:code-params.properties" /> -->
    	
    </beans>
    

    1. db.properties
    jdbc.driver=com.mysql.jdbc.Driver
    jdbc.url=jdbc:mysql:///ssm_crud?useUnicode=true&characterEncoding=UTF-8
    jdbc.username=root
    jdbc.password=123
    
    1. sqlMapConfig.xml
    <?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>
    
    	<!-- 配置别名,放置实体类 -->
    	<typeAliases>
    		<package name="com.fei.pojo"/>
    	</typeAliases>
    	
    	<!-- pagehelper分页插件注册 -->
    	<plugins>
    		<plugin interceptor="com.github.pagehelper.PageInterceptor">
    			<!-- 分页参数合理化 -->
    			<property name="resonable" value="true"/>
    		</plugin>
    	</plugins>
    	
    </configuration>
    

    1. web.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xmlns="http://java.sun.com/xml/ns/javaee"
    	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    	id="WebApp_ID" version="2.5">
    
    	<!-- 1、启动spring容器 -->
    	<context-param>
    		<param-name>contextConfigLocation</param-name>
    		<param-value>classpath:applicationContext.xml</param-value>
    	</context-param>
    	<listener>
    		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    	</listener>
    
    	<!-- 2、springmvc的前端控制器,拦截所有请求 -->
    	<servlet>
    		<servlet-name>springmvc</servlet-name>
    		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    		<init-param>
    			<param-name>contextConfigLocation</param-name>
    			<param-value>classpath:springmvc.xml</param-value>
    		</init-param>
    		<load-on-startup>1</load-on-startup>
    	</servlet>
    	<servlet-mapping>
    		<servlet-name>springmvc</servlet-name>
    		<url-pattern>/</url-pattern>
    	</servlet-mapping>
    
    	<!-- 3、字符编码过滤器,一定要放在所有过滤器之前 -->
    	<filter>
    		<filter-name>CharacterEncodingFilter</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>
    		<init-param>
    			<param-name>forceRequestEncoding</param-name>
    			<param-value>true</param-value>
    		</init-param>
    		<init-param>
    			<param-name>forceResponseEncoding</param-name>
    			<param-value>true</param-value>
    		</init-param>
    	</filter>
    	<filter-mapping>
    		<filter-name>CharacterEncodingFilter</filter-name>
    		<url-pattern>/*</url-pattern>
    	</filter-mapping>
    	
    	<!-- 4、使用Restful风格的URI,将页面普通的post请求转为指定的delete或put请求 -->
    	<filter>
    		<filter-name>HiddenHttpMethodFilter</filter-name>
    		<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    	</filter>
    	<filter-mapping>
    		<filter-name>HiddenHttpMethodFilter</filter-name>
    		<url-pattern>/*</url-pattern>
    	</filter-mapping>
    	<!-- 处理直接发送put请求的过滤器 -->
    	<filter>
    		<filter-name>HttpPutFormContentFilter</filter-name>
    		<filter-class> org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
    	</filter>
    	<filter-mapping>
    		<filter-name>HttpPutFormContentFilter</filter-name>
    		<url-pattern>/*</url-pattern>
    	</filter-mapping>
    
    </web-app>
    

    下面是项目的包结构以及lib目录

    项目包结构

    lib目录

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  • 原文地址:https://www.cnblogs.com/zxfei/p/11469308.html
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