本文共 5473 字，大约阅读时间需要 18 分钟。

环境：JDK1.8、elipse

1.导入包

2.创建实体类

当前User类中的内容：

public class User {   	private Integer uid;	private String uname;	private Integer money;	....省略getter和setter方法}

3.创建dao层以及对应的xml文件

UserMapper中的内容：

public interface UserMapper {   	List<User> findAll();}

UserMapper.xml文件中的内容：

<?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"><mapper namespace="com.hy.ssm.xml.mybatis.demo.dao.UserMapper">  <select id="findAll" resultType="User">  	select * from users;  </select></mapper>

注意当前的UserMapper类和UserMapper.xml在同一目录

4.创建controller层

当前的UserController中的内容：

@Controllerpublic class UserController {   	@Autowired	UserMapper userMapper;		@RequestMapping("/findAll")	public String index(Model model) {   		List<User> findAll = userMapper.findAll();		model.addAttribute("items", findAll);		return "index.jsp";	}}

5.在当前项目中添加applicationContext.xml文件

创建resources文件，并标记

当前的applicationContext.xml文件中的内容：

<?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"		  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/context      http://www.springframework.org/schema/context/spring-context-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/tx      http://www.springframework.org/schema/tx/spring-tx-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.hy.ssm.xml.mybatis.demo"/>      <context:property-placeholder location="classpath:db.properties"/>      <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">         <property name="driverClassName" value="${driverClassName}"/>         <property name="url" value="${url}"/>         <property name="username" value="${username}"/>         <property name="password" value="${password}"/>      </bean>            <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">        <property name="typeAliasesPackage" value="com.hy.ssm.xml.mybatis.demo.entity"></property>        <property name="dataSource" ref="dataSource"></property>      </bean>            <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">        <property name="basePackage" value="com.hy.ssm.xml.mybatis.demo.dao"></property>      </bean>            <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">       <property name="dataSource" ref="dataSource"/>      </bean>       	  <mvc:annotation-driven/> </beans>      

当前的db.properties文件中的内容：
driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/test
username=root
password=root

6.配置web.xml文件

<?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>ssm-mybatis-xml</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>  </filter>  <filter-mapping>    <filter-name>encodingFilter</filter-name>    <url-pattern>/*</url-pattern>  </filter-mapping>  <servlet>    <servlet-name>mvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:applicationContext.xml</param-value>    </init-param>  </servlet>  <servlet-mapping>    <servlet-name>mvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping></web-app>

7.创建index页面

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><!DOCTYPE html><html><head><meta charset="UTF-8"/><title>Insert title here</title></head><body>	<table border="1">		<tr>			<th>编号</th>			<th>姓名</th>			<th>金额</th>		</tr>		<c:forEach items="${items}" var="item">			<tr>				<td>${item.uid}</td>				<td>${item.uname}</td>				<td>${item.money}</td>			</tr>		</c:forEach>			</table></body></html>

8.启动和访问

结果成功！

9.使用mybatis注解版写sql

当前的UserMapper类中的内容：

public interface UserMapper {   	@Select("select * from users")	List<User> findAll();}

删除UserMapper.xml文件

10.启动和访问

结果成功！

11.总结

1.使用SqlSessionFactoryBean中的basePackage用于处理当前的dao层和xml之间的管理，并创建对应的dao的代理

2.当前的dao文件和xml的文件名称必须一致

3.使用MapperScannerConfigurer中的typeAliasesPackage用来做别名映射

4.使用注解版的Mybatis的时候，直接删除xml文件，直接写@Select等注解，其余不变即可！

5.再次编写SSM项目并且使用xml注解配置还是那么熟悉，写当前的demo用于回忆作用，免得以后忘记

以上纯属个人见解，如有问题请联系本人！