SSM整合

登录案例开发

一、准备数据库表格

二、创建maven web项目并补充项目结构，准备好MVC模式下的主要目录

三、更新web.xml 文件和准备包结构

四、导入依赖

              org.springframework      spring-context      5.3.5                  org.springframework      spring-aspects      5.3.5                  aopalliance      aopalliance      1.0                  com.alibaba      druid      1.1.10                  mysql      mysql-connector-java      8.0.22                  org.springframework      spring-jdbc      5.3.5                  org.springframework      spring-tx      5.3.5                  org.springframework      spring-orm      5.3.5                  commons-logging      commons-logging      1.2                  org.apache.logging.log4j      log4j-slf4j-impl      2.14.0      test                  org.projectlombok      lombok      1.18.12      provided                  org.springframework      spring-test      5.3.5      test                  org.junit.jupiter      junit-jupiter-api      5.7.0      test                  org.springframework      spring-web      5.3.5              org.springframework      spring-webmvc      5.3.5                  javax.servlet      javax.servlet-api      4.0.1      provided              javax.servlet.jsp      javax.servlet.jsp-api      2.3.3      provided                  com.fasterxml.jackson.core      jackson-databind      2.12.1                  org.mybatis      mybatis      3.5.3                  org.mybatis      mybatis-spring      2.0.3

接下来准备配置文件（重要）

五、log4j2.xml

六、jdbc.properties

jdbc_driver=com.mysql.cj.jdbc.Driverjdbc_url=jdbc:mysql://127.0.0.1:3306/mydb?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghaijdbc_username=rootjdbc_password=root

七、springMVC.xml配置文件

八、applicationContext.xml

九、web.xml

                contextConfigLocation        classpath:applictionContext.xml                    org.springframework.web.context.ContextLoaderListener                    encFilter        org.springframework.web.filter.CharacterEncodingFilter                    encoding            utf-8                        encFilter        /*                    dispatcherServlet        org.springframework.web.servlet.DispatcherServlet                    contextConfigLocation            classpath:springmvc.xml                1                dispatcherServlet        /

十、开发业务代码

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>    Title

success.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>    Title 登录成功

fail.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>    Title登录失败

User实体类

package com.lanson.pojo;import lombok.AllArgsConstructor;import lombok.Data;import lombok.NoArgsConstructor;import java.io.Serializable;/** * @Author: Lansonli * @Description: MircoMessage:Mark_7001 */@AllArgsConstructor@NoArgsConstructor@Datapublic class User implements Serializable {    private Integer uid;    private String  uname;    private String password;}

UserController

package com.lanson.controller;import com.lanson.pojo.User;import com.lanson.service.UserService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import java.util.List;/** * @Author: Lansonli * @Description: MircoMessage:Mark_7001 */@Controllerpublic class UserController {    @Autowired    private UserService userService;    @RequestMapping("login.do")    public String login(String uname,String password){        String view =null;        User user = userService.findUser(uname, password);        if(null != user){            view ="/success.jsp";        }else{            view="/fail.jsp";        }        return view;    }    @ResponseBody    @RequestMapping("findAllUser.do")    public List findAllUser(){        return userService.findAllUser();    }}

UserService

package com.lanson.service.impl;import com.lanson.mapper.UserMapper;import com.lanson.pojo.User;import com.lanson.service.UserService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import org.springframework.transaction.annotation.Transactional;import java.util.List;/** * @Author: Lansonli * @Description: MircoMessage:Mark_7001 */@Service@Transactionalpublic class UserServiceImpl implements UserService {    @Autowired    private UserMapper userMapper;    @Override    public User findUser(String uname, String password) {        return userMapper.findUser(uname,password);    }    @Override    public List findAllUser() {        return userMapper.findAllUser();    }}

UserMapper

package com.lanson.mapper;import com.lanson.pojo.User;import java.util.List;/** * @Author: Lansonli * @Description: MircoMessage:Mark_7001 */public interface UserMapper {    User findUser(String uname, String password);    List findAllUser();}

UserMapper.xml