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SpringMVC+Mybatis整合的增删改查
本文基于 SPRING注解。本文使用Oracle数据库。
项目文件下载地址：http://download.csdn.net/detail/u010634066/8188965
项目总图：
现在lib中导入所有所需jar包：这里就不叙述了
一：在SRC下创建一个Bean包；在bean下面添加实体类，实体类对应于数据表，其属性与数据表相同或多于数据表。
/**
*
*/
package com.szz.bean;
import com.szz.base.bean.BaseObject;
/**
* @author Administrator
*
*/
public class User extends BaseObject {
private String ID;
/**
* @return the iD
*/
public String getID() {
return ID;
}
/**
* @param iD the iD to set
*/
public void setID(String iD) {
ID = iD;
}
/**
* @return the nAME
*/
public String getNAME() {
return NAME;
}
/**
* @param nAME the nAME to set
*/
public void setNAME(String nAME) {
NAME = nAME;
}
/**
* @return the pASSWORD
*/
public String getPASSWORD() {
return PASSWORD;
}
/**
* @param pASSWORD the pASSWORD to set
*/
public void setPASSWORD(String pASSWORD) {
PASSWORD = pASSWORD;
}
private String NAME;
private String PASSWORD;
/* (non-Javadoc)
* @see com.szz.base.bean.BaseObject#toString()
*/
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "User [ID=" + ID + ", NAME=" + NAME + ", PASSWORD=" + PASSWORD
+ "]";
}
}
二、创建com.szz.dao包；里面用来定义需要对数据进行操作的实体类型DAO接口
/**
*
*/
package com.szz.dao;
import java.util.List;
import com.szz.bean.User;
/**
* @author Administrator
*
*/
public interface UserDao {
/*
* 查询
*/
public List<User> selectAll();
public User findById(String id);
public User findByUserName(String userName);
public int countAll();
/*
* 更新删除插入
*/
public int insert(User user);
public int update(User user);
public int delete(String userName);
/* //返回插入数据的ID
public int findInsertUserID(User user);*/
/*//批处理 插入多条数据
public void insertUsers(List<User> users);*/
}
三、创建包com.szz.tables.xml(这样命名好像不好 定义com.szz.Mappers比较直观一点) 这个是用来写sql语句的xml文件
<?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">
<!-- 这里定义好命名空间 -->
<mapper namespace="com.szz.dao.UserDao">
<select id="selectAll" resultType="User">
select * from SM_USER
</select>
<select id="countAll">
select count(*) c from SM_USER
</select>
<select id="findById" parameterType="String" resultType="User">
select * from SM_USER where ID=#{ID}
</select>
<select id="findByUserName" parameterType="String" resultType="User">
select * from SM_USER where NAME=#{NAME}
</select>
<!-- <select id="findInsertUserID" paramterType="Srtring">
select ID FROM SM_USER NAME =#{User.NAME}
</select> -->
<insert id="insert" parameterType="User">
insert into SM_USER(ID,NAME,PASSWORD) VALUES(#{ID},#{NAME},#{PASSWORD})
</insert>
<update id="update" parameterType="User">
update SM_USER
<set>
<!-- 这里要注意后面的 逗号“，” 因为有多个参数需要用逗号隔开 否则会报错 -->
<if test="NAME!=null">NAME=#{NAME},</if>
<if test="PASSWORD!=null">PASSWORD=#{PASSWORD}</if>
</set>
where ID=#{ID}
</update>
<delete id="delete" parameterType="String">
delete FROM SM_USER WHERE ID=#{ID}
</delete>
</mapper>命名空间定义为我们需要对应的DAO接口；这里每个方法的ID都跟DAO里面的方法一一对应；
还有说明一下
parameterType="User"如果你没有在mybatis配置文件里面定义别名 这样写就会报错 你要把全类名写清楚
<typeAliases>
<typeAlias type="com.szz.bean.User" alias="User"/>
</typeAliases>
四、spring的配置文件 spring-context.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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:jee="http://www.springframework.org/schema/jee"
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/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee.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">
<!-- 启动扫描szz下所有的注解-->
<context:component-scan base-package="com.szz"/>
<mvc:annotation-driven ignore-default-model-on-redirect="true"/>
<mvc:default-servlet-handler/>
<!-- 可通过注解控制事务
<tx:annotation-driven /> -->
<!-- 导入外部的资源文件 一般都会把数据源的配置文件房子properties文件里面 然后用这种方式来导入
<context:property-placeholder location="classpath:jdbc.properties"/>-->
<!--
配置DataSource数据源 配置mysql方式
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value=http://www.mamicode.com/"com.mysql.jdbc.Driver" />>
配置文件说明： 详情见http://www.blogjava.net/ldwblog/archive/2013/07/10/401418.html
<!-- 用户Dao --> <bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean"> <property name="mapperInterface" value=http://www.mamicode.com/"com.szz.dao.UserDao" /> >
MapperScannerConfigurer
Xml代码
五、创建mybatis-config.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>
<!-- <environments default="development">
<environment id="development">
<transactionManager type="JDBC" />
<dataSource type="POOLED">
<property name="driver" value=http://www.mamicode.com/"oracle.jdbc.driver.OracleDriver" />>六、创建services接口
package com.szz.service;
import java.util.List;
import com.szz.bean.User;
public interface UserService {
public List<User> getUsers();
/*
* 濡傛灉ID涓虹┖灏辨壘username 濡傛灉username涓虹┖灏辨壘ID锛?閮藉～鎸夌収ID
*/
public User getUserInfo(String ID,String userName);
public int getCount();
// public int saveUser(User user);
public int insertUser(User user);
public int updateUser(User user);
public int deleteUser(String ID);
}
七‘services接口的实现类 serviceImpl
/**
*
*/
package com.szz.service.impl;
import java.util.List;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.szz.bean.User;
import com.szz.dao.UserDao;
import com.szz.service.UserService;
/**
* @author Administrator
*
*/
@Service("userService")
public class UserServiceImpl implements UserService {
@Autowired
private UserDao userDao;
/*
@Autowired
private SqlSessionTemplate sessionTemplate;*/
public UserDao getUserDao() {
return userDao;
}
/**
* @param userDao the userDao to set
*/
public void setUserDao(UserDao userDao) {
this.userDao = userDao;
}
@Override
public List<User> getUsers() {
// TODO Auto-generated method stub
return userDao.selectAll();
//return sessionTemplate.getMapper(UserDao.class).selectAll();
}
@Override
public User getUserInfo(String ID, String userName) {
// TODO Auto-generated method stub
if(ID!=null){
return userDao.findById(ID);
}
else
return userDao.findByUserName(userName);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return userDao.countAll();
}
@Override
public int insertUser(User user) {
// TODO Auto-generated method stub
return userDao.insert(user);
}
@Override
public int updateUser(User user) {
// TODO Auto-generated method stub
return userDao.update(user);
}
@Override
public int deleteUser(String ID) {
// TODO Auto-generated method stub
return userDao.delete(ID);
}
}
八、创建控制类controller包/**
/**
*
*/
package com.szz.action;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import com.szz.base.acion.BaseAction;
import com.szz.bean.User;
import com.szz.service.UserService;
/**
* @author Administrator
*
*/
@Controller
@RequestMapping(value=http://www.mamicode.com/"/user")>
九、web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>Dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:spring-context.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
十、一些页面之类的；index.jsp
<body>
<form action="/SpringMvcMybatisFreeMarker/user/login" method="post">
用户ID：<input type="text" name="id" value=http://www.mamicode.com/""/>>
user/index.jsp<body>
<form action="user/insertuser" method="post">
<table>
<tr>
<th>ID</th>
<td><input type="text" name="ID" /> </td>
</tr>
<tr>
<tr>
<th>账号</th>
<td><input type="text" name="NAME" /> </td>
</tr>
<tr>
<th>密码</th>
<td><input type="text" name="PASSWORD" /></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value=http://www.mamicode.com/"添加"> >
user/edit.jsp<body>
<form action="user/updateuser" method="post">
<input type="text" name="ID" value=http://www.mamicode.com/"${user.ID}" />>
访问：http://localhost:8080/SpringMvcMybatisFreeMarker/index.jsp
SpringMVC+Mybatis整合的增删改查
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