01-Intellij IDEA搭建SSM(SpringMVC+Spring+Mybatis+Maven)框架（下）

SSM入门实战（登录功能的实现）

（1）数据库文件--->user.sql

/*Navicat Premium Data TransferSource Server         : MySQLSource Server Type    : MySQLSource Server Version : 50719Source Host           : localhost:3306Source Schema         : ssm_mavenTarget Server Type    : MySQLTarget Server Version : 50719File Encoding         : 65001Date: 16/05/2020 18:33:03
*/SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user`  (`userID` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '用户id',`userName` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '用户名',`gender` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '性别',`avatar` varchar(255) CHARACTER SET swe7 COLLATE swe7_swedish_ci NULL DEFAULT NULL COMMENT '头像',`password` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '密码',`telephone` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '手机号',`userType` int(5) NOT NULL COMMENT '用户类型',`regTime` datetime(0) NOT NULL COMMENT '注册时间',`regIP` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '注册IP',PRIMARY KEY (`userID`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES ('201601', '沐晴つ', '女', '', '123456', '13578519307', 1, '2020-05-12 12:10:06', '127.0.0.0.1');
INSERT INTO `user` VALUES ('201602', '墨夕つ', '男', '', '123456', '13578519307', 1, '2020-05-12 12:10:06', '127.0.0.0.1');SET FOREIGN_KEY_CHECKS = 1;

（2）逆向工程generator生成Mapper和Entity

（2-a）Generator.java

package com.edu.util;import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;import java.io.File;
import java.util.ArrayList;
import java.util.List;//逆向工程，生成Mapper和Entity
public class Generator {public void generator() throws Exception{List<String> warnings = new ArrayList<String>();boolean overwrite = true;/**指向逆向工程配置文件 idea中右击文件copyPath*/File configFile = new File("D:\\IdeaProjects\\SSM_Maven\\src\\main\\resources\\generatorConfig.xml");ConfigurationParser parser = new ConfigurationParser(warnings);Configuration config = parser.parseConfiguration(configFile);DefaultShellCallback callback = new DefaultShellCallback(true);MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,callback, warnings);myBatisGenerator.generate(null);}public static void main(String[] args) throws Exception {try {Generator generator = new Generator();generator.generator();} catch (Exception e) {e.printStackTrace();}}
}

（2-b）GeneratorConfig.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE generatorConfigurationPUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN""http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"><generatorConfiguration><context id="mybatisGenerator" targetRuntime="MyBatis3"><commentGenerator><!-- 是否去除自动生成的注释 true：是 ： false:否 --><property name="suppressAllComments" value="true" /></commentGenerator><!--数据库连接的信息：驱动类、连接地址、用户名、密码 --> <!--<*********************--><jdbcConnection driverClass="com.mysql.jdbc.Driver"connectionURL="jdbc:mysql://localhost:3306/ssm_maven?useUnicode=true&amp;characterEncoding=utf8"userId="root"password="root"></jdbcConnection><!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和NUMERIC 类型解析为java.math.BigDecimal --><javaTypeResolver><property name="forceBigDecimals" value="false" /></javaTypeResolver><!-- targetProject:生成PO/Entity类的位置 -->   <!--<**********************************--><javaModelGenerator targetPackage="com.edu.entity" targetProject=".\src\main\java"><!-- enableSubPackages:是否让schema作为包的后缀 --><property name="enableSubPackages" value="false" /><!-- 从数据库返回的值被清理前后的空格 --><property name="trimStrings" value="true" /></javaModelGenerator><!-- targetProject:mapper映射文件生成的位置 -->     <!--<***********************--><sqlMapGenerator targetPackage="com.edu.mapper" targetProject=".\src\main\java"><!-- enableSubPackages:是否让schema作为包的后缀 --><property name="enableSubPackages" value="false" /></sqlMapGenerator><!-- targetPackage：mapper接口生成的位置 -->     <!--<***************--><javaClientGenerator type="XMLMAPPER"  targetPackage="com.edu.mapper" targetProject=".\src\main\java"><!-- enableSubPackages:是否让schema作为包的后缀 --><property name="enableSubPackages" value="false" /></javaClientGenerator><!-- 指定数据库表 --><table tableName="user"></table>   <!--<***************--><!-- 当需要指定特定字段的java类型时<table schema="" tableName=""><columnOverride column="" javaType="" /></table> --></context>
</generatorConfiguration>

（3）Service---业务层

（3-a）UserService.java

package com.edu.service;import com.edu.entity.User;
import com.edu.entity.UserExample;import java.util.List;public interface UserService {long countByExample(UserExample example);int deleteByExample(UserExample example);int deleteByPrimaryKey(String userID);int insert(User record);int insertSelective(User record);List<User> selectByExample(UserExample example);User selectByPrimaryKey(String userID);User findUser(String userID, String password);int updateByExampleSelective(User record, UserExample example);int updateByExample(User record, UserExample example);int updateByPrimaryKeySelective(User record);int updateByPrimaryKey(User record);
}

（3-b）UserServiceImpl.java

package com.edu.service.impl;import com.edu.entity.User;
import com.edu.entity.UserExample;
import com.edu.mapper.UserMapper;
import com.edu.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import java.util.List;//@Service用于标注业务层组件
@Service("UserService")
public class UserServiceImpl implements UserService {//set方法注入private UserMapper userMapper;@Autowiredpublic void setUserMapper (UserMapper userMapper) {this.userMapper = userMapper;}@Overridepublic long countByExample(UserExample example) {return  userMapper.countByExample(example);}@Overridepublic int deleteByExample(UserExample example) {return userMapper.deleteByExample(example);}@Overridepublic int deleteByPrimaryKey(String userID) {return userMapper.deleteByPrimaryKey(userID);}@Overridepublic int insert(User record) {return userMapper.insert(record);}@Overridepublic int insertSelective(User record) {return userMapper.insertSelective(record);}@Overridepublic List<User> selectByExample(UserExample example) {return userMapper.selectByExample(example);}@Overridepublic User selectByPrimaryKey(String userID) {return userMapper.selectByPrimaryKey(userID);}@Overridepublic User findUser(String userID, String password) {return userMapper.findUser(userID, password);}@Overridepublic int updateByExampleSelective(User record, UserExample example) {return userMapper.updateByExampleSelective(record, example);}@Overridepublic int updateByExample(User record, UserExample example) {return userMapper.updateByExample(record, example);}@Overridepublic int updateByPrimaryKeySelective(User record) {return userMapper.updateByPrimaryKeySelective(record);}@Overridepublic int updateByPrimaryKey(User record) {return userMapper.updateByPrimaryKey(record);}
}

（4）Controller---控制层--->LoginController.java

package com.edu.controller;import com.edu.entity.User;
import com.edu.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;@Controller
public class LoginController {private UserService userService;@Autowiredpublic void setUserService(UserService userService) {this.userService = userService;}//登录处理@RequestMapping("/login")public String login(String userID, String password) {User user=userService.findUser(userID, password);if(user != null) {return "success";}else {return "fail";}}}

（5）登录页面--->index.jsp

<%--Created by IntelliJ IDEA.User: MuQingDate: 2020/5/16Time: 9:57To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8"%>
<html>
<head><meta charset="UTF-8"><title>登录</title>
</head>
<body><form action="${pageContext.request.contextPath}/login.action" method="post">用户名:<input type="text" name="userID">密码:<input type="password" name="password"><input type="submit" value="登录"></form>
</body>
</html>

（6）浏览器网址： http://localhost:8080/SSM_Maven/

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01-Intellij IDEA搭建SSM(SpringMVC+Spring+Mybatis+Maven)框架（下）

SSM入门实战（登录功能的实现）

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