Spring + SpringMVC + Mybatis整合流程
1 需求
1.1 客户列表查询
1.2 根据客户姓名模糊查询
2 整合思路
第一步：整合dao层
Mybatis和spring整合，通过spring管理mapper接口，使用mapper扫描器自动扫描mapper接口，并在spring中进行注册。
第二步：整合service层
通过spring管理service层，service调用mapper接口。使用配置方式将service接口配置在spring配置文件中，并且进行事务控制。
第三步：整合springMVC
由于springMVC是spring的模块，不需要整合。
3 准备环境
3.1 数据库版本
mysql5.7
3.2
编译器
eclipse
3.3
Jar 包
3.3.1
spring的jar包
3.3.2
spring与mybatis的整合jar包
3.3.3
mybatis的jar包
3.3.4
数据库驱动包
3.3.5
log4j包
3.3.6
log4j配置文件
### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n ### direct messages to file mylog.log ###
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=c:\mylog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n ### set log levels - for more verbose logging change 'info' to 'debug' ###
log4j.rootLogger=debug, stdout
3.3.7 dbcp数据库连接池包
3.3.8 jstl包
4 整合dao
4.1 sqlMapconfig.xml
mybatis的配置文件：
<?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>
<!-- 定义别名 -->
<typeAliases>
<package name="com.haohan.ssm.po" />
</typeAliases>
<!-- 配置mapper映射文件 -->
<mappers>
<!-- 加载 原始dao使用映射文件 -->
<!-- <mapper resource="sqlmap/User.xml" /> --
<!--批量mapper扫描 遵循规则：将mapper.xml和mapper.java文件放在一个目录 且文件名相同 ，现在由spring配置扫描-->
<!-- <package name="cn.itcast.ssm.dao.mapper" /> -->
</mappers>
</configuration>
4.2 db.properties数据库配置文件
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/haohan1?characterEncoding=utf8&useSSL=false
jdbc.username=root
jdbc.password=123456
4.3 applicationContext-dao.xml
spring在这个xml文件中配置dbcp连接池，sqlSessionFactory，mapper的批量扫描。
<?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">
<!--1. 数据源 -->
<!-- 加载配置文件 -->
<context:property-placeholder location="classpath:db.properties"/>
<!-- 配置dbcp连接池 -->
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.name}"></property>
<property name="password" value="${jdbc.password}"</property>
</bean>
<!--2. sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml"></property>
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 3. mapper的批量扫描-->
<!-- mapper的批量扫描 :从mapper包中扫描mapper接口，自动创建代理对象并且在spring容器中注册。
遵循的规范：需要将mapper的接口类名和mapper.xml映射文件名保持一致，且在一个目录中。
自动扫描出来的mapper的bean的id为mapper类名（首字母小写）
-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 指定扫描的包名
如果扫描多个包，用半角逗号分开
-->
<property name="basePackage" value="cn.haohan.ssm.mapper"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
</beans>
4.4 逆向工程生成po类和mapper接口和mapper.xml文件
参考：http://how2j.cn/k/mybatis/mybatis-generator/1376.html
生成如下图的文件：
4.5 自定义mapper接口和xml文件，以及po的包装类
4.5.1 CustomMapper.java
public interface CustomMapper {
public List<HhCustom> findAllCustom(HhCustomVo hhCustomVo)throws Exception;
}
4.5.1 CustomMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- namespace:命名空间，作用是对sql进行分类化管理，sql隔离 -->
<mapper namespace="cn.haohan.ssm.mapper.CustomMapper">
<sql id="query_custom_where">
<if test="hhCustom!=null">
<if test="hhCustom.name!=null and hhCustom.name!=''">
name like '%${hhCustom.name}%'
</if>
</if>
</sql>
<resultMap type="hhCustom" id="hhCustomResultMap">
<id column="id" property="id"/>
<result column="phone_number" property="phoneNumber"/>
</resultMap>
<select id="findAllCustom" parameterType="cn.haohan.ssm.po.HhCustomVo" resultMap="hhCustomResultMap">
SELECT
* FROM hh_custom
<where>
<include refid="query_custom_where"></include>
</where>
</select>
</mapper>
4.5.2 HhCustomVo
//客户的包装类
public class HhCustomVo {
//客户信息
private HhCustom hhCustom;
public HhCustom getHhCustom() {
return hhCustom;
}
public void setHhCustom(HhCustom hhCustom) { this.hhCustom = hhCustom;
}
}
4.6 数据库表结构
5 整合service
5.1 定义service接口
public interface CustomService {
public HhCustom findCustomById(Integer id)throws Exception;
public List<HhCustom> findAllCustom(HhCustomVo hhCustomVo)throws Exception;
}
5.2 service接口实现
public class CustomServiceImpl implements CustomService{
@Autowired
HhCustomMapper hhCustomMapper;
@Autowired
CustomMapper customMapper;
@Override
public HhCustom findCustomById(Integer id) throws Exception {
// TODO Auto-generated method stub
return hhCustomMapper.selectByPrimaryKey(id);
}
@Override
public List<HhCustom> findAllCustom(HhCustomVo hhCustomVo) throws Exception {
// TODO Auto-generated method stub
return customMapper.findAllCustom(hhCustomVo);
}
}
5.3 在spring容器配置service（applicationContext-service）
<?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">
<bean id="CustomServiceImpl" class="cn.haohan.ssm.service.impl.CustomServiceImpl"></bean>
</beans>
5.4 事务控制（applicationContext-transaction）
<?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">
<!-- 配置事务管理器
对mybatis操作数据库事务控制，spring使用jdbc事务控制类-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 配置数据源 -->
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置事务增强（通知） -->
<tx:advice id="txadvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 设置进行事务操作的方法匹配规则 -->
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="insert*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="find*" propagation="SUPPORTS"/>
<tx:method name="get*" propagation="SUPPORTS"/>
<tx:method name="select*" propagation="SUPPORTS"/>
</tx:attributes>
</tx:advice>
<!-- aop操作 -->
<aop:config>
<aop:advisor advice-ref="txadvice" pointcut="execution(* cn.haohan.ssm.serivce.impl.*.*(..))"/>
</aop:config>
</beans>
6 整合springMVC
6.1 springmvc.xml
在springmvc.xml中配置适配器映射器、适配器处理器、视图解析器
<?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"
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/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
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 扫描加载handler -->
<context:component-scan base-package="cn.haohan.ssm.controller"></context:component-scan>
<!-- 注解映射器 -->
<!--<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean>
注解适配器
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"></bean> -->
<!-- 使用mvc:annotation-driven可代替上面的注解映射器和注解适配器mvc:annotation-driven默认加载许多参数绑定，比如json转换解析器，实际开发用mvc:annotation-driven-->
<mvc:annotation-driven>
</mvc:annotation-driven> <!-- 视图解析器
解析jsp，默认使用jstl标签，-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
6.2 配置前端控制器（web.xml）
<!-- 配置springmvc前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<!-- contextConfigLocation:加载springmvc的配置文件（配置处理器适配器、映射器、视图解析器
默认加载的是/WEB-INF/servlet名称-servlet.xml（ springmvc-servlet.xml）
-->
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/springmvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<!--第一种：*.action ,访问以.action结尾的，由DispatcherServlet解析。
第二种：/ ,所有访问的地址都由DispatcherServlet解析，对于静态文件需要配置不让DispatcherServlet解析。
可以实现Restful风格。
-->
<servlet-name>springmvc</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
6.3 编写controller
@Controller
public class CustomController { @Autowired
CustomService customService; //模糊查询客户
@RequestMapping("/findAllCustom")
public ModelAndView findAllCustom(HhCustomVo hhCustomVo) throws Exception {
List<HhCustom> customlist = customService.findAllCustom(hhCustomVo);
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("customlist", customlist);
modelAndView.setViewName("customlist");
return modelAndView;
} //根据客户id查询
public ModelAndView findCustomByid(Integer id) throws Exception {
HhCustom hhCustom = customService.findCustomById(id);
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("hhCustom", hhCustom);
modelAndView.setViewName("customlist");
return modelAndView;
}
}
6.4 编写jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>客戶列表</title>
</head>
<body>
<form name="customForm"
action="${pageContext.request.contextPath}/findAllCustom.action"
method="post">
查询条件：
<table width="100%" border=1>
<tr>
<td>客戶名称：<input name="hhCustom.name" />
</td>
<%-- <td>客戶类型： <select name="customType">
<c:forEach items="${customType}" var="customType">
<option value="${customType.key }">${customType.value}</option>
</c:forEach>
</select>
</td> --%>
<td><button type="submit" value="查询" >查询</button></td>
</tr>
</table>
客戶列表：
<table width="100%" border=1>
<tr>
<th>选择</th>
<th>客戶名称</th>
<th>客戶邮箱</th>
<th>客戶电话</th>
<th>客户类型</th>
<!-- <th>操作</th> -->
</tr>
<c:forEach items="${customlist}" var="custom">
<tr>
<td><input type="checkbox" name="custom_id" value="${custom.id}" /></td>
<td>${custom.name }</td>
<td>${custom.mail }</td>
<td>${custom.phoneNumber }</td>
<td>${custom.category }</td>
<%--<td><fmt:formatDate value="${custom.birthday }" pattern="yyyy-MM-dd HH:mm:ss"/></td>
<td><a href="${pageContext.request.contextPath }/items/editItems.action?id=${item.id }">修改</a></td> --%>
</tr>
</c:forEach>
</table>
</form>
</body>
</html>
7 加载spring容器（web.xml）
<!-- 加载spring容器 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/applicationContext-*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
8 Post方法中文乱码（web.xml）
<!-- post中文乱码 -->
<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>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>