mybatis系列三：springMVC和mybatis的运用

mybatis系列：

mybatis系列一:mybatis实现增删改查:

http://blog.csdn.net/wanlong360599336/article/details/71172060

mybatis系列二：Spring与MyBatis的整合实例:

http://blog.csdn.net/wanlong360599336/article/details/71194238

1.效果：

2.结构图：

3.看上面的结构图，重点的在于配置文件：

新建controller页面：

package com.mybatis.controller;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.mybatis.interfaces.*;
import com.mybatis.model.*;

@Controller
@RequestMapping("/article")
public class UserController {
	@Autowired
	IUserOperation userMapper;

	@RequestMapping("/list")
	public ModelAndView listall(HttpServletRequest request,HttpServletResponse response){
		List<Article> articles=userMapper.getUserArticles(24); 
		ModelAndView mav=new ModelAndView("main");
		mav.addObject("articles",articles);
		return mav;
	}
}

配置文件如下

applicationContext.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:aop="http://www.springframework.org/schema/aop" 
    xmlns:tx="http://www.springframework.org/schema/tx" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:p="http://www.springframework.org/schema/p" 
    xsi:schemaLocation="  
            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd  
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd  
            http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd  
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"  
            default-autowire="byName" default-lazy-init="false"> 
    
  <!--本示例采用DBCP连接池，应预先把DBCP的jar包复制到工程的lib目录下。 -->   
		
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close" p:driverClassName="com.mysql.jdbc.Driver"
		p:url="jdbc:mysql://127.0.0.1:3306/mybatis?characterEncoding=utf8" 
		p:username="root" p:password="password"
		p:maxActive="10" p:maxIdle="10">
	</bean>
	
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
	  <property name="dataSource" ref="dataSource" />
	</bean>
	
	 
  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> 
     <!--dataSource属性指定要用到的连接池--> 
     <property name="dataSource" ref="dataSource"/> 
     <!--configLocation属性指定mybatis的核心配置文件--> 
     <property name="configLocation" value="classpath:config/Configuration.xml" /> 
     <!-- 所有配置的mapper文件 -->
     <property name="mapperLocations" value="classpath*:com/mybatis/mapper/*.xml" />
  </bean> 
  <!-- MapperScannerConfigurer 去扫描所有的mapper接口 -->
  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
	 <property name="basePackage" value="com.mybatis.interfaces" />	 
  </bean>
  
  <!-- 
  <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">     
     <property name="sqlSessionFactory" ref="sqlSessionFactory" />     
     <property name="mapperInterface" value="com.yihaomen.inter.IUserOperation" /> 
  </bean> 
   -->
</beans>

Configuration.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>
	<!-- mybatis别名定义 -->
	<typeAliases>
		<typeAlias alias="User" type="com.mybatis.model.User" />
		<typeAlias alias="Article" type="com.mybatis.model.Article" />
	</typeAliases>
	 <!-- 与spring 集成之后,这些可以完全删除,数据库连接的管理交给 spring 去管理 -->
	<!-- <environments default="development">
		<environment id="development">
			<transactionManager type="JDBC" />
			<dataSource type="POOLED">
				<property name="driver" value="com.mysql.jdbc.Driver" />
				<property name="url" value="jdbc:mysql://127.0.0.1:3306/mybatis" />
				<property name="username" value="root" />
				<property name="password" value="password" />
			</dataSource>
		</environment>
	</environments> -->
	<!-- 这里交给sqlSessionFactory 的 mapperLocations属性去得到所有配置信息 -->
	<!-- <mappers>
		<mapper resource="com/mybatis/mapper/User.xml" />
	</mappers> -->
</configuration>


<!-- Ctrl+Shift+F 自动排版 -->

mvc-dispatcher-servlet.xml：

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

	<context:component-scan base-package="com.mybatis.controller" />
	<mvc:annotation-driven />
	
	<mvc:resources mapping="/static/**" location="/WEB-INF/static/"/>  
    <mvc:default-servlet-handler/>  
     
	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix">
			<value>/WEB-INF/pages/</value>
		</property>
		<property name="suffix">
			<value>.jsp</value>
		</property>
	</bean>

</beans>

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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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">
  <display-name>MyBatisStudys</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <filter>
    <filter-name>encodingFilter</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>forceEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:config/applicationContext.xml</param-value><!-- 加载配置文件applicationContext.xml -->
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <listener>
    <listener-class>
			org.springframework.web.context.ContextCleanupListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>mvc-dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>mvc-dispatcher</servlet-name>  <!--这里的servlet-name的值要和 mvc-dispatcher-servlet.xml的名称一致 -->
    <url-pattern>/</url-pattern>
  </servlet-mapping>
 
</web-app>

新建一个页面：

main.jsp：

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!-- "http://java.sun.com/jsp/jstl/core"需添加jstl.jar和standard.jar两个jar包，否则报错 -->
<!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>article list</title>
</head>
<body>
	<c:forEach items="${articles}" var="item">  
        ${item.id }--${item.title }--${item.content }<br />
	</c:forEach>
</body>
</html>

访问页面：

http://localhost:8080/MyBatisStudys/article/list

下载地址： springMVC和Mybatis实例

在这里，springMVC配置的过程要注意一个细节，不然很容易报这种错误，例如： java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for ************

这次我就遇到了，原来是我的接口名和mapper里面的user.xml中定义的方法名称不一致导致的，所以要注意，网上有这种问题的几种解决方法：

按照步骤进行逐一检查：

1、mapper.xml中没有加入namespace
2、mapper.xml中的方法和接口mapper的方法不对应
3、mapper.xml没有加入到mybatis-config.xml中(即总的配置文件)，例外：配置了mapper文件的包路径的除外
4、mapper.xml文件名和所写的mapper名称不相同。

mybatis系列三：springMVC和mybatis的运用

猜你喜欢