springmvc整合mybatis详细教程

需求：整合springmvc和mybatis

整合的目标是：控制层采用springmvc,持久层使用mybatis

整合的思想

dao层：

1、SqlMapConfig.xml.空文件即可。但是需要头文件。使用逆向工程的时候可以不配置别名。

2、applicationContext.xml

1)数据库连接池

2）SqlSessionFactory对象

3）配置mapper文件扫描器

4）事务管理

5）开启注解事务

3、db.properties  存放数据库的配置信息

controller层：

springmvc.xml

1）包扫描器

2）配置注解驱动

3）配置视图解析器

web.xml

1）配置spring

2）配置前端控制器

其它可选配置

log4j.properties

整合步骤

1 创建动态web工程

2 导入所需的jar

3 SqlMapConfgi.xml

 如果使用逆向工程的话，可以不需要配置别名，空文件即可，但是需要头文件。

<?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>
    <!-- 设置别名 -->
    <typeAliases>
        <!-- 2. 指定扫描包，会把包内所有的类都设置别名，别名的名称就是类名，大小写不敏感 -->
        <package name="com.test.springmvc.pojo" />
    </typeAliases>
</configuration>

4 applicationContext.xml

1.数据库连接池

2.SqlSessionFactory对象，需要spring和mybatis整合包下的

3.配置mapper文件扫描器

4.配置事务管理

5.开启注解

<?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:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
                           http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
                           http://www.springframework.org/schema/context 
                           http://www.springframework.org/schema/context/spring-context-4.0.xsd
                           http://www.springframework.org/schema/aop 
                           http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 
                           http://www.springframework.org/schema/tx 
                           http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
                           http://www.springframework.org/schema/util 
                           http://www.springframework.org/schema/util/spring-util-4.0.xsd">

    
    <!-- 1加载配置文件 -->
    <context:property-placeholder location="classpath:db.properties" />

    <!-- 2配置连接池 -->
    <bean name="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <property name="maxActive" value="10" />
        <property name="maxIdle" value="5" />
    </bean>
    
    <!--3 配置SqlSessionFactory  -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 配置mybatis核心配置文件 -->
        <property name="configLocation" value="classpath:SqlMapConfig.xml" />
        <!-- 配置数据源 -->
        <property name="dataSource" ref="dataSource" />
    </bean>
    
    <!--4 Mapper代理开发   扫描  -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.test.springmvc.mapper"></property>
    </bean>
    
    <!--5 配置事务管理器 -->
    <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    
    <!--6 开启注解 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>
    
</beans>

5 db.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://39.105.94.154:3306/springmvc?characterEncoding=utf-8
jdbc.username=tom
jdbc.password=tom

6 springmvc.xml

1包扫描器

2配置处理器映射器和处理器适配器（或者直接配置注解驱动就可以了）

3配置视图解析器

<?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:p="http://www.springframework.org/schema/p"
       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-4.0.xsd
                           http://www.springframework.org/schema/mvc 
                           http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
                           http://www.springframework.org/schema/context 
                           http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    
    <!-- 配置扫描组件 ,扫描@Controller，@Service等-->
    <context:component-scan base-package="com.test.springmvc" />

    <!-- 注册驱动 -->
    <mvc:annotation-driven />
    
    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 配置逻辑视图的前缀 -->
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <!-- 配置逻辑视图的后缀 -->
        <property name="suffix" value=".jsp"></property>
    </bean>
    
</beans>

7 web.xml

1. 配置spring监听器
2. 配置前端控制器

<?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">
  <display-name>springmvc</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>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
         <!-- 配置spring -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    
    <!-- 使用监听器加载Spring配置文件 -->
    <listener>
          <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    <!-- 配置SrpingMVC的前端控制器 -->
    <servlet>
        <servlet-name>springmvc-web</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>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc-web</servlet-name>
        <!-- 配置所有以action结尾的请求进入SpringMVC -->
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>
</web-app>

8 log4j.properties

### 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=d:\\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' ###
### fatal error warn info debug trace \u5982\u679C\u4E0D\u60F3\u8981\u8F93\u51FA\uFF1B log4j.rootLogger=off, stdout
log4j.rootLogger=debug, stdout

9 配置完成后的效果

简单测试

1 准备一个jsp页面

 

代码内容：

<%@ 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>查询商品列表</title>
</head>
<body> 
<form action="${pageContext.request.contextPath }/item/queryitem.action" method="post">
查询条件：
<table width="100%" border=1>
<tr>
<td><input type="submit" value="查询"/></td>
</tr>
</table>
商品列表：
<table width="100%" border=1>
<tr>
    <td>商品名称</td>
    <td>商品价格</td>
    <td>生产日期</td>
    <td>商品描述</td>
    <td>操作</td>
</tr>
<c:forEach items="${itemList }" var="item">
<tr>
    <td>${item.name }</td>
    <td>${item.price }</td>
    <td><fmt:formatDate value="${item.createtime}" pattern="yyyy-MM-dd HH:mm:ss"/></td>
    <td>${item.detail }</td>
    
    <td><a href="${pageContext.request.contextPath }/itemEdit.action?id=${item.id}">修改</a></td>

</tr>
</c:forEach>

</table>
</form>
</body>

</html>

View Code

2 准备一个Items类

package com.test.springmvc.pojo;

import java.util.Date;

public class Items {
    private Integer id;

    private String name;

    private Float price;

    private String pic;

    private Date createtime;

    private String detail;

    public Items(Integer id, String name, Float price, Date createtime, String detail) {
        super();
        this.id = id;
        this.name = name;
        this.price = price;
        this.createtime = createtime;
        this.detail = detail;
    }


    public Integer getId() {
        return id;
    }

    
    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name == null ? null : name.trim();
    }

    public Float getPrice() {
        return price;
    }

    public void setPrice(Float price) {
        this.price = price;
    }

    public String getPic() {
        return pic;
    }

    public void setPic(String pic) {
        this.pic = pic == null ? null : pic.trim();
    }

    public Date getCreatetime() {
        return createtime;
    }

    public void setCreatetime(Date createtime) {
        this.createtime = createtime;
    }

    public String getDetail() {
        return detail;
    }

    public void setDetail(String detail) {
        this.detail = detail == null ? null : detail.trim();
    }
}

View Code

3 编写ItemsController

package com.test.springmvc.controller;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import com.test.springmvc.pojo.Items;

@Controller
public class ItemController {
    // @RequestMapping：里面放的是请求的url，和用户请求的url进行匹配
    // action可以写也可以不写
    @RequestMapping("/item/itemList.action")
    public ModelAndView queryItemList(){
        
        // 创建页面需要显示的商品数据
        List<Items> list = new ArrayList<>();
        list.add(new Items(1, "1华为 荣耀8", 2399f, new Date(), "质量好！1"));
        list.add(new Items(2, "2华为 荣耀8", 2399f, new Date(), "质量好！2"));
        list.add(new Items(3, "3华为 荣耀8", 2399f, new Date(), "质量好！3"));
        list.add(new Items(4, "4华为 荣耀8", 2399f, new Date(), "质量好！4"));
        list.add(new Items(5, "5华为 荣耀8", 2399f, new Date(), "质量好！5"));
        list.add(new Items(6, "6华为 荣耀8", 2399f, new Date(), "质量好！6"));
        
        // 创建ModelAndView，用来存放数据和视图
        ModelAndView modelAndView = new ModelAndView();
        
        // 设置视图jsp，需要设置视图的物理地址
        modelAndView.setViewName("itemList");

        // 设置数据到模型中
        modelAndView.addObject("itemList", list);
        
        return modelAndView;
    }
}

4启动项目

输入网址：http://localhost:8080/springmvc/item/itemList.action

效果如下：