ssm框架实现简单的增删改查

.1启动idea，按照下图写好项目结构

二，具体实现如下

pom.xml文件

  4.0.0

  com.zhongruan
  ssm123
  1.0-SNAPSHOT
  war

  ssm123 Maven Webapp
  
  http://www.example.com

  
    UTF-8
    1.8
    1.8
    
    5.0.2.RELEASE
    
    3.2.6
    
    1.7.7
    1.2.17
    0.9.5.2
    1.1.2
  
  
    
    
      org.springframework
      spring-core
      ${spring.version}
    

    
      org.springframework
      spring-web
      ${spring.version}
    
    
      org.springframework
      spring-oxm
      ${spring.version}
    
    
      org.springframework
      spring-tx
      ${spring.version}
    

    
      org.springframework
      spring-jdbc
      ${spring.version}
    

    
      org.springframework
      spring-webmvc
      ${spring.version}
    
    
      org.springframework
      spring-aop
      ${spring.version}
    

    
      org.springframework
      spring-context-support
      ${spring.version}
    

    
      org.springframework
      spring-test
      ${spring.version}
    
    
    
      org.mybatis
      mybatis
      ${mybatis.version}
    
    
    
      org.mybatis
      mybatis-spring
      1.2.2
    
    
    
      javax
      javaee-api
      7.0
    

    
    
      mysql
      mysql-connector-java
      5.1.30
    
    
    
      commons-dbcp
      commons-dbcp
      1.2.2
    
    
    
      jstl
      jstl
      1.2
    
    
    
    
      log4j
      log4j
      ${log4j.version}
    


    
    
      com.mchange
      c3p0
      ${c3p0.version}
    

    
      taglibs
      standard
      ${taglibs.version}
    

    
      org.slf4j
      slf4j-api
      ${slf4j.version}
    
    
      org.slf4j
      slf4j-log4j12
      ${slf4j.version}
    

    
    
      javax.servlet
      javax.servlet-api
      3.1.0
      provided
    
    
    
      javax.servlet.jsp
      javax.servlet.jsp-api
      2.3.1
      provided
    

  
  
    ssm123
    
      
        
          maven-clean-plugin
          3.1.0
        
        
        
          maven-resources-plugin
          3.0.2
        
        
          maven-compiler-plugin
          3.8.0
        
        
          maven-surefire-plugin
          2.22.1
        
        
          maven-war-plugin
          3.2.2
        
        
          maven-install-plugin
          2.5.2
        
        
          maven-deploy-plugin
          2.8.2
        
      
    
  

1.创建一个User.java实体类以及数据库

package com.drzhang.bean;
 

public class UserInfo {
    private int id;
    private String username;
    private String password;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public UserInfo(int id, String username, String password) {
        this.id = id;
        this.username = username;
        this.password = password;
    }

    public UserInfo() {
    }

    @Override
    public String toString() {
        return "UserInfo{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

2.创建dao层，创建一个IUserDao类

public interface IUserDao {
    public ListfindAll();
}

3.创建service层，创建impl包，在包下创建IUserServicempl类

import java.util.List;
@Service
public class UserServiceImpl implements IUserService {
    @Autowired
    IUserDao userDao;
    @Override
    public List findAll() {
        return userDao.findAll();
    }
}
在service下创建IUserServicelei

public interface IUserService {
    public List findAll();

}

4.创建controller层的实现类UserConler

public class UserController {


        @Autowired
        private IUserService userService;

        @RequestMapping("/findAll.do")
        public ModelAndView findAll(){
            List userinfos=userService.findAll();
            ModelAndView mv=new ModelAndView();
            mv.addObject("ui",userinfos);
            mv.setViewName("allUser");
            return mv;
        }

}
5.配置各种配置文件

UserMapper.xml，关于数据库的增删改查语句都写在这里




    
        select id,name,sex,age from user where id=#{id}
    
 
    
        select id,name,sex,age from user
    
 
    
    
        insert  into user(id,name,sex,age) values(#{id},#{name},#{sex},#{age})
    
    
    
    
        delete from user where id=#{id}
    
 
    
    
        update user set name=#{name},sex=#{sex},age=#{age} where id=#{id}
    

 

jdbc.properties

 

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/你的数据库名字?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=
log4j.properties

### set log levels ###
log4j.rootLogger = debug ,  stdout ,  D ,  E
 
### 输出到控制台 ###
log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target = System.out
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern =  %d{ABSOLUTE} %5p %c{ 1 }:%L - %m%n
 
### 输出到日志文件 ###
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = logs/log.log
log4j.appender.D.Append = true
log4j.appender.D.Threshold = DEBUG ## 输出DEBUG级别以上的日志
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
 
### 保存异常信息到单独文件 ###
log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
log4j.appender.D.File = logs/error.log ## 异常日志文件名
log4j.appender.D.Append = true
log4j.appender.D.Threshold = ERROR ## 只输出ERROR级别以上的日志!!!
log4j.appender.D.layout = org.apache.log4j.PatternLayout
log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
spring-mybatis.xml，在这里我把spring和mybatis整合在了一起



 
    
 
    
 
    
        
        
        
        
    
 
    
        
        
        
        
        
        
    
 
 
    
    
        
        
    
 
 
    
        
    
 
    
 

spring-mvc.xml



 
    
 
    
 
    
 
 
    
        
        
    
 

最后一个是web.xml的配置



  Archetype Created Web Application
 
  
    org.springframework.web.context.ContextLoaderListener
  
  
    contextConfigLocation
    classpath:spring-mybatis.xml
  
 
  
    encodingFilter
    org.springframework.web.filter.CharacterEncodingFilter
    
      encoding
      UTF-8
    
  
  
    encodingFilter
    /*
  
 
 
  
    springmvc
    org.springframework.web.servlet.DispatcherServlet
    
      contextConfigLocation
      classpath:spring-mvc.xml
    
    1
    true
  
  
    springmvc
    /
  
 
  
    index.jsp
  

到此，配置文件就写完了，接下来写一个测试类，来看下是否能正常运行

UserDaoTest.java

package com.drzhang.dao;
 
import com.drzhang.bean.User;
import com.drzhang.service.UserService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath:spring-mybatis.xml"})
public class UserDaoTest {
    @Autowired
    private UserService userService;
 
    @Test
    public void testUser(){
        User user = userService.findUserById(1);
        System.out.println(user);
    }
}
如果出现下面的结果，就说明我们前面的配置都是成功的了！



最后就是controller层和jsp文件了

UserController.java

package com.drzhang.controller;
 
import com.drzhang.bean.User;
import com.drzhang.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
 
import javax.servlet.http.HttpServletRequest;
import java.util.List;
 
 
@Controller
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;
 
    /**
     * 跳转到添加用户界面
     * @return
     */
    @RequestMapping("toAddUser")
    public String toAddUser(){
        return "addUser";
    }
 
 
    /**
     * 添加用户并重定向
     * @param model
     * @param user
     * @return
     */
    @RequestMapping("addUser")
    public String addUser(Model model,User user){
        if (user != null){
            userService.saveUser(user);
        }
        return "redirect:/user/getAllUser";
    }
 
 
    /**
     * 查询全部用户
     * @param model
     * @return
     */
    @RequestMapping("getAllUser")
    public String getAllUser(Model model){
        List user = userService.findAll();
        model.addAttribute("userList",user);
        return "allUser";
    }
 
 
    /**
     * 删除用户
     * @param model
     * @param id
     * @return
     */
    @RequestMapping("delUser")
    public String removeUser(Model model,Integer id){
        model.addAttribute("user",userService.deleteUser(id));
        //userService.deleteUser(id);
        return "redirect:/user/getAllUser";
    }
 
 
    /**
     * 跳转到更新用户页面
     */
    @RequestMapping("toUpdate")
    public String toUpdate(@RequestParam(value = "id")Integer id,Model model){
        model.addAttribute("user",userService.findUserById(id));
        return "updateUser";
    }
 
    /**
     * 更新用户
     * @param
     * @return
     */
    @RequestMapping(value = "updateUser",method = RequestMethod.POST)
    public String updateUser(User user){
        userService.updateUser(user);
        return "redirect:/user/getAllUser";
    }
}
index.jsp

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







    查看用户信息


<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2018/6/22
  Time: 17:24
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%
    pageContext.setAttribute("path",request.getContextPath());
%>


    
    
    
    


 

    

        

            
用户管理
        
    
 
    

        

            新增
        
    
 
    

        

            
                
                    
                    
                    
                    
                    
                
                
                    
                        
                        
                        
                        
                        
                    
 
                
            
id
name
sex
age
操作
${user.id}
${user.name}
${user.sex}
${user.age}

                            
                                
                                编辑
                            
                                
                                删除
                        
        
    

 


最后运行即可