MySQL+Maven+Spring+Mybatis

一. 数据库准备

MySQL安装包是 mysql-5.5.19-win32.msi，图形化管理MySQL界面 sqlyog_mysql.zip
查看数据库

show databases;

建表语句

use test;
DROP TABLE IF EXISTS `t_user`;  
CREATE TABLE `t_user` ( 
  `user_id` int(11) NOT NULL, 
  `user_name` varchar(30) NOT NULL,  
  `user_password` varchar(30) NOT NULL,  
  PRIMARY KEY (`user_id`)  
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 

插入四条数据

insert into t_user values(1,'小王','123456');    
insert into t_user values(2,'小明','234567');    
insert into t_user values(3,'小红','345678');    
insert into t_user values(4,'小兰','456789'); 

查看数据

select * from t_user;

命令窗中显示如下

二. Maven WEB项目的创建

File–>new–>Maven Project–>next–>选择后next–>填写好Group Id等信息后Finish

建好后项目文件如下

Tomcat

Order and Export

项目文件目录如下


在pom.xml中配置依赖包

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0modelVersion>
  <groupId>com.xiaoxi.maventestgroupId>
  <artifactId>mysqltest1artifactId>
  <packaging>warpackaging>
  <version>0.0.1-SNAPSHOTversion>
  <name>mysqltest1 Maven Webappname>
  <url>http://maven.apache.orgurl>

    <properties>
        
        <spring.version>4.1.2.RELEASEspring.version>
        
        <mybatis.version>3.2.6mybatis.version>
        
        <slf4j.version>1.7.7slf4j.version>
        <log4j.version>1.2.17log4j.version>
    properties>


    <dependencies>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-coreartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-oxmartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-txartifactId>
            <version>${spring.version}version>
        dependency>

        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>${spring.version}version>
        dependency>

        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-aopartifactId>
            <version>${spring.version}version>
        dependency>

        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-context-supportartifactId>
            <version>${spring.version}version>
        dependency>

        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-testartifactId>
            <version>${spring.version}version>
        dependency>

        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>${mybatis.version}version>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>1.2.2version>
        dependency>

        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>3.8.1version>
            <scope>testscope>
        dependency>

        
        <dependency>
            <groupId>log4jgroupId>
            <artifactId>log4jartifactId>
            <version>1.2.17version>
        dependency>

        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.36version>
        dependency>
        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>jstlartifactId>
            <version>1.2version>
        dependency>
        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>javax.servlet-apiartifactId>
            <version>3.0.1version>
            <scope>providedscope>
        dependency>
        
        <dependency>
            <groupId>javax.servlet.jspgroupId>
            <artifactId>jsp-apiartifactId>
            <version>2.1version>
            <scope>providedscope>
        dependency>


    dependencies>


  <build>
    <finalName>mysqltest1finalName>
  build>
project>

(2.1) Java代码

1、在JAVA Resource中的src/main/java创建四个package,分别为

com.xiaoxi.model
com.xiaoxi.dao
com.xiaoxi.service
com.xiaoxi.service.impl

2、在 package com.xiaoxi.model 中创建User实体类User.java

/*
 * Copyright (C) 2006-2018 Tuniu All rights reserved
 * Author:guoxiaoxi
 * Date：2018年5月23日
 * Description: 功能描述
 */
package com.xiaoxi.model;

/**
 * User.java
 *
 * @author guoxiaoxi
 */
public class User {
    private Integer userId;
    private String userName;
    private String userPassword;

    public Integer getUserId() {
        return userId;
    }

    public void setUserId(Integer userId) {
        this.userId = userId;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserPassword() {
        return userPassword;
    }

    public void setUserPassword(String userPassword) {
        this.userPassword = userPassword;
    }
}

3、创建Dao接口UserDao.java

/*
 * Copyright (C) 2006-2018 Tuniu All rights reserved
 * Author:guoxiaoxi
 * Date：2018年5月23日
 * Description: 功能描述
 */
package com.xiaoxi.dao;

import com.xiaoxi.model.User;

/**
 * UserDao.java
 *
 * @author guoxiaoxi
 */
public interface UserDao {
    public User selectUserById(Integer userId);

    public User selectUserByName(String userName);
}

4、创建Service接口UserService.java

package com.xiaoxi.service;

import com.xiaoxi.model.User;

/**
 * UserService.java
 *
 * @author guoxiaoxi
 */
public interface UserService {
    boolean doUserLogin(User user);
}

5、创建Service接口的实现类 UserServiceImpl.java

package com.xiaoxi.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.xiaoxi.dao.UserDao;
import com.xiaoxi.model.User;
import com.xiaoxi.service.UserService;

/**
 * UserServiceImpl.java
 *
 */
@Service
public class UserServiceImpl implements UserService {

    /*
     * (non-Javadoc)
     * @see com.xiaoxi.service.UserService#doUserLogin(com.xiaoxi.model.User)
     */
    @Autowired
    private UserDao dao;

    @Override
    public boolean doUserLogin(User user) {
        List list = dao.selectUserById(user.getUserId());
        if(list.size() == 0){
            return false;
        }
        else{
            if(list.get(0).getUserPassword().equals(user.getUserPassword())){
                return true;
            }
            else{
                return false;
            }

        }
    }

}

(2.2) 配置文件
在src/main/resource建立配置文件
1、创建数据库属性文件jdbc.properties

jdbc_driverClassName=com.mysql.jdbc.Driver
jdbc_url=jdbc:mysql://localhost:3306/test
jdbc_username=root
jdbc_password=123456

2、创建mybatis的配置文件mybatis-config.xml

  

<configuration>
configuration>

3、创建mapper_user.xml

  

<mapper namespace="com.xiaoxi.dao.UserDao">
    
    <resultMap id="BaseResultMap"
        type="com.xiaoxi.model.User">
        <id column="USER_ID" property="userId" jdbcType="INTEGER" />
        <result column="USER_NAME" property="userName"
            jdbcType="CHAR" />
        <result column="USER_PASSWORD" property="userPassword"
            jdbcType="CHAR" />
    resultMap>
    
    <select id="selectUserById" parameterType="int"
        resultMap="BaseResultMap">
        SELECT * FROM t_user WHERE USER_ID = #{userId}
    select>
    <select id="selectUserByName" parameterType="String"
        resultMap="BaseResultMap">
        SELECT * FROM t_user WHERE USER_NAME = #{userName}
    select>
mapper>

4、创建springmvc.xml

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    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-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

    <mvc:annotation-driven />
    
    <context:component-scan
        base-package="com.xiaoxi.controller" />

    
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver"
        p:prefix="/WEB-INF/view/" p:suffix=".jsp" />
beans>

5、创建application.xml

<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"
    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">

    
    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:jdbc.propertiesvalue>
                
            list>
        property>
    bean>


    
    <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        
        
        
        <property name="driverClassName">
            <value>${jdbc_driverClassName}value>
        property>
        <property name="url">
            <value>${jdbc_url}value>
        property>
        <property name="username">
            <value>${jdbc_username}value>
        property>
        <property name="password">
            <value>${jdbc_password}value>
        property>
    bean>

    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage"
            value="com.xiaoxi.dao" />
    bean>

    
    <bean id="sqlSessionFactory"
        class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="mapperLocations"
            value="classpath:mapper_user.xml" />
        <property name="configLocation"
            value="classpath:mybatis-config.xml" />
        
    bean>

    
    <context:component-scan
        base-package="com.xiaoxi.service" />

beans>

(2.3) 先测试一下配置
分别创建类SpringTestCse.java类和UserServiceTest.java类

SpringTestCse.java类代码

package com.xiaoxi.test;

import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * SpringTestCase.java
 *
 */
@ContextConfiguration(locations = {"classpath:application.xml"})
@RunWith(SpringJUnit4ClassRunner.class)
public class SpringTestCase extends AbstractJUnit4SpringContextTests {

}

UserServiceTest.java类代码

package com.xaioxi.service.test;

import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;

import com.xiaoxi.model.User;
import com.xiaoxi.service.UserService;
import com.xiaoxi.test.SpringTestCase;

/**
 * UserServiceTest.java
 *
 */
public class UserServiceTest extends SpringTestCase {

    @Autowired
    private UserService userService;

    @Test
    public void doUserLogin() {
        User user = new User();
        user.setUserId(1);
        user.setUserPassword("123456");
        System.out.println(userService.doUserLogin(user));
    }

}

右键–>Debug As–>JUnit Test Console结果为true