IDEA搭建SSM实现登录、注册，数据增删改查功能

搭建空的Maven项目

使用Intellij idea 搭建基本的maven空项目 new->project

最后Finish，Maven项目搭建完成

构建项目基本骨架
1，在java下新建com
2，在com下新建springmvc
3，在springmvc下新建controller、dao、mapping、pojo、service
如下图：

目录解释如下
controller：http（GET和POST等）请求的入口，调用Service，想客户端返回数据

dao：接口，定义了数据表映射成的对象，具有的操作

mapping：具体是sql语句，以xml格式存在，即mybatis的语法文件

service：controller调用的服务，service调用dao里面定义的数据库行为方法，来执行对应mapping里的mybatis，从而完成与数据库完整的交互。

修改pom文件

配置你的maven

在pom.xml文件中添加如下内容

  4.0.0
  com
  ssm
  war
  1.0-SNAPSHOT
  Maven Webapp
  http://maven.apache.org

  
UTF-8

4.1.4.RELEASE

3.2.8

1.7.7
1.2.17

2.5.0
  

  


  junit
  junit
  3.8.1
  test



  org.mybatis
  mybatis
  ${mybatis.version}



  org.mybatis
  mybatis-spring
  1.2.2




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




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




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



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



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



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



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



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



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



  javax.servlet
  javax.servlet-api
  3.0.1
  provided



  javax.servlet.jsp
  jsp-api
  2.2
  provided




  mysql
  mysql-connector-java
  5.1.30




  commons-dbcp
  commons-dbcp
  1.2.2




  jstl
  jstl
  1.2




  log4j
  log4j
  ${log4j.version}





  com.alibaba
  fastjson
  1.1.41




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



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




  org.codehaus.jackson
  jackson-mapper-asl
  1.9.13



  com.fasterxml.jackson.core
  jackson-databind
  2.1.0


  com.fasterxml.jackson.core
  jackson-annotations
  2.1.0




  commons-fileupload
  commons-fileupload
  1.3.1


  commons-io
  commons-io
  2.4


  commons-codec
  commons-codec
  1.9



  junit
  junit
  4.11
  
  test




  org.springframework
  spring-test
  4.1.7.RELEASE


  junit
  junit
  RELEASE



  org.jsoup
  jsoup
  1.8.1



  net.sourceforge.htmlunit
  htmlunit
  2.15




  org.seleniumhq.selenium
  selenium-java
  2.33.0



  us.codecraft
  webmagic-core
  0.6.1


  us.codecraft
  webmagic-extension
  0.6.1



  
  
com
  

  src/main/java
  
    **/*.xml
  
  true

  
  

编写ssm配置文件

在resources下新建个配置文件jdbc.properties，内容如下：

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
username=root
password=root
定义初始连接数
initialSize=0
定义最大连接数
maxActive=20
定义最大空闲
maxIdle=20
定义最小空闲
minIdle=1
定义最长等待时间
maxWait=60000

请确保你的mysql服务是开启的，且存在数据库test

在resources下新建个配置文件spring-mvc.xml，内容如下：

    
        
            text/html;charset=UTF-8
        
    



    
        
               
        
    



    
    
    



  
    
      
    
      
    
      
 

mybatis-config.xml配置：

spring-mybatis配置：

log4j.xml

日志模块的配置：

log4j.properties

定义LOG输出级别
log4j.rootLogger=INFO,Console,File
定义日志输出目的地为控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
可以灵活地指定日志输出格式，下面一行是指定具体的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.File = org.apache.log4j.RollingFileAppender
指定输出目录
log4j.appender.File.File = logs/ssm.log
定义文件最大大小
log4j.appender.File.MaxFileSize = 10MB
 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志
log4j.appender.File.Threshold = ALL
log4j.appender.File.layout = org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH:mm:ss}][%c]%m%n

至此：

配置项目工程

第一步：将配置文件添加入工程

配置webapp

在src下创建目录webapp

web.xml文件

  Archetype Created Web Application
  
  
    contextConfigLocation
classpath:spring-mybatis.xml
  

  
  
log4jRefreshInterval
60000
  
  
org.springframework.web.util.Log4jConfigListener
  


  
  
encodingFilter
org.springframework.web.filter.CharacterEncodingFilter

  encoding
  UTF-8


  

  
encodingFilter
/*
  

  
  
org.springframework.web.context.ContextLoaderListener
  
  
  
org.springframework.web.util.IntrospectorCleanupListener
  


  
  
mvc-dispatcher
org.springframework.web.servlet.DispatcherServlet



  contextConfigLocation
  classpath:spring-mvc.xml

1
true
  


  
  
mvc-dispatcher

/
  
  

  
  
    15
  


  
    index.jsp
  

把webapp添加入项目工程


添加artifacts

配置tomcat

登录、注册，增删改查功能实现

项目结构如下

controller层代码

package com.springmvc.controller;
import com.springmvc.pojo.Admin;
import com.springmvc.service.AdminService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

@Controller
public class main {

@Autowired
private AdminService adminService;
/**
  * 获取所有信息
 * @param request
 * @param model
 * @return
 */
@RequestMapping("/getAllUser")
public String getAllUser(HttpServletRequest request, Model model){
    List admin=adminService.findAll();
    System.out.println(admin);
    model.addAttribute("list",admin);
    request.setAttribute("list",admin);
    return "allUser";
}



/**
 * 添加信息
 * @param admin
 * @param model
 * @return
 */
@RequestMapping("/addUser")
public String addUser(Admin admin, Model model){
    adminService.save(admin);
    return "redirect:getAllUser";
}

/**
 * 修改信息
 * @param admin
 * @param request
 * @param model
 * @return
 */
@RequestMapping("/updateUser")
public String updateUser(Admin admin,HttpServletRequest request,Model model){
    if(adminService.update(admin)){
        admin=adminService.findById(admin.getId());
        request.setAttribute("admin",admin);
        model.addAttribute("admin",admin);
        return "redirect:getAllUser";
    }else{
        return "error";
    }
}

/**
 * 根据id查询
 * @param id
 * @param request
 * @param model
 * @return
 */
@RequestMapping("/getUser")
public String getUser(int id,HttpServletRequest request,Model model){
    request.setAttribute("admin",adminService.findById(id));
    model.addAttribute("admin",adminService.findById(id));
    return "editUser";
}

/**
 * 删除用户
 * @param id
 */
@RequestMapping("/delUser")
public String delUser(int id){
    adminService.delete(id);
    return "redirect:getAllUser";
}

/**
 * 注册账号
 * @param admin
 * @param model
 * @return
 */
@RequestMapping("/register")
public String register(Admin admin, Model model){
    adminService.save(admin);
    return "login";
}

/**
 * 登录账号
 * @return
 */
@RequestMapping("/login")
public String login(Admin admin,Model model){
    Admin ad=adminService.login(admin);
    if(ad!=null){
        return "redirect:getAllUser";
    }else{
        return "error";
        }
    }
}

service层代码

package com.springmvc.service;
import com.springmvc.dao.AdminMapper;
import com.springmvc.pojo.Admin;
import com.sun.jna.platform.win32.Netapi32Util;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;

@Service("AdminService")

public class AdminService {
    @Resource
    private AdminMapper adminMapper;
    /**
     * 添加数据
     */
    public void save(Admin admin) {
        adminMapper.save(admin);
    }

    /**
     * 根据id修改
     * @param admin
     * @return
     */
    public boolean update(Admin admin) {
        return adminMapper.update(admin);
    }

/**
 * 根据id删除
 * @param id
 * @return
 */
public boolean delete(int id) {
    return adminMapper.delete(id);
}

/**
 * 根据id查询
 * @param id
 * @return
 */
public Admin findById(int id) {
    Admin admin=adminMapper.findById(id);
    return admin;
}

/**
 * 查询所有
 * @return
 */
public List findAll() {
    List findallList=adminMapper.findAll();
    return findallList;
}

/**
 * 登录账号
 */
public Admin login(Admin admin){
    return adminMapper.login(admin);
}
}

dao层代码

package com.springmvc.dao;

import com.springmvc.pojo.Admin;

import java.util.List;

public interface AdminMapper {

void save(Admin admin);
boolean update(Admin admin);
boolean delete(int id);
Admin findById(int id);
List findAll();
Admin login(Admin admin);

}

mapping层代码

  
    
    
    
  


  
        insert into admin(name,password) values(#{name},#{password})
    
  
        update admin set name=#{name},password=#{password} where id=#{id}
    
  
        delete from admin where id=#{id}
    
  
  
        select id,name,password from admin where id=#{id}
    
  
        select id,name,password from admin
    

    
     select*from admin where name=#{name} and password=#{password}
  

pojo层代码

package com.springmvc.pojo;

public class Admin {
private Integer id;

private String name;

private String password;

public Integer getId() {
    return id;
}

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

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name == null ? null : name.trim();
}

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password == null ? null : password.trim();
}

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

}

源码下载https://download.csdn.net/download/sinat_37001576/10357678