基于SSM框架实现简单的登录注册的示例代码

基于SSM框架实现简单的登录注册的示例代码

一、环境配置工程目录

在pom.xml添加依赖

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

4.0.0

com.imooc

userLogin

0.0.1-SNAPSHOT

war

junit

junit

4.11

test

org.slf4j

slf4j-api

1.7.12

ch.qos.logback

logback-core

1.1.1

ch.qos.logback

logback-classic

1.1.1

mysql

mysql-connector-java

5.1.35

runtime

c3p0

c3p0

0.9.1.2

org.mybatis

mybatis

3.3.0

org.mybatis

mybatis-spring

1.2.3

taglibs

standard

1.1.2

jstl

jstl

1.2

com.fasterxml.jackson.core

jackson-databind

2.5.4

javax.servlet

javax.servlet-api

3.1.0

org.springframework

spring-core

4.2.0.RELEASE

org.springframework

spring-beans

4.2.0.RELEASE

org.springframework

spring-context

4.2.0.RELEASE

org.springframework

spring-jdbc

4.2.0.RELEASE

org.springframework

spring-tx

4.2.0.RELEASE

org.springframework

spring-web

4.2.0.RELEASE

org.springframework

spring-webmvc

4.2.0.RELEASE

org.springframework

spring-test

4.2.0.RELEASE

userLogin

org.apache.maven.plugins

maven-compiler-plugin

2.3.2

1.8

1.8

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

4.0.0

com.imooc

userLogin

0.0.1-SNAPSHOT

war

junit

junit

4.11

test

org.slf4j

slf4j-api

1.7.12

ch.qos.logback

logback-core

1.1.1

ch.qos.logback

logback-classic

1.1.1

mysql

mysql-connector-java

5.1.35

runtime

c3p0

c3p0

0.9.1.2

org.mybatis

mybatis

3.3.0

org.mybatis

mybatis-spring

1.2.3

taglibs

standard

1.1.2

jstl

jstl

1.2

com.fasterxml.jackson.core

jackson-databind

2.5.4

javax.servlet

javax.servlet-api

3.1.0

org.springframework

spring-core

4.2.0.RELEASE

org.springframework

spring-beans

4.2.0.RELEASE

org.springframework

spring-context

4.2.0.RELEASE

org.springframework

spring-jdbc

4.2.0.RELEASE

org.springframework

spring-tx

4.2.0.RELEASE

org.springframework

spring-web

4.2.0.RELEASE

org.springframework

spring-webmvc

4.2.0.RELEASE

org.springframework

spring-test

4.2.0.RELEASE

userLogin

org.apache.maven.plugins

maven-compiler-plugin

2.3.2

1.8

1.8

数据库驱动配置

jdbc.properties

jdbc.driverClass=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:3306/mysystem?useUnicode=true&characterEncoding=UTF-8

jdbc.username=root

jdbc.password=kongtao

spring-web.xml

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xmlns:mvc="http://springframework.org/schema/mvc"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.0.xsd

">

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xmlns:mvc="http://springframework.org/schema/mvc"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx.xsd

http://springframework.org/schema/mvc

http://springframework.org/schema/mvc/spring-mvc-3.0.xsd

">

二、具体逻辑实现数据访问对象(DAO接口)

UserDao.java

package com.sy.dao;

import org.apache.ibatis.annotations.Param;

import com.sy.entity.User;

public interface UserDao {

/**

* 查找用户名和密码

* @param username 登录用户名

* @return

*/

User findByUsername(String username);

/**

* 注册用户和密码

*/

void registerByUsernameAndPassword(@Param("username")String username,

@Param("password")String password);

}

UserDao.xml

PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"

"http://mybatis.org/dtd/mybatis-3-mapper.dtd">

select * from user where username = #{username}

insert into user (username,password)

values (#{username},#{password})

控制器

UserController.java

package com.sy.controller;

import javax.servlet.http.HttpSession;

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 org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.SessionAttributes;

import com.sy.http://entity.User;

import com.sy.service.UserService;

@Controller

@RequestMapping("/user")

//这里用了@SessionAttributes，可以直接把model中的user(也就key)放入其中

//这样保证了session中存在user这个对象

@SessionAttributes("user")

public class UserController {

@Autowired

private UserService userServivce;

//正常访问login页面

@RequestMapping("/login")

public String login(){

return "login";

}

//表单提交过来的路径

@RequestMapping("/checkLogin")

public String checkLogin(User user,Model model){

//调用service方法

user = userServivce.checkLogin(user.getUsername(), user.getPassword());

//若有user则添加到model里并且跳转到成功页面

if(user != null){

model.addAttribute("user",user);

return "success";

}

return "fail";

}

//测试超链接跳转到另一个页面是否可以取到session值

@RequestMapping("/anotherpage")

public String hrefpage(){

return "anotherpage";

}

//注销方法

@RequestMapping("/outLogin")

public String outLogin(HttpSession session){

//通过session.invalidata()方法来注销当前的session

session.invalidate();

return "login";

}

@RequestMapping("/regist")

public String regist(){

return "regist";

}

@RequestMapping("/doRegist")

public String doRegist(User user,Model model){

System.out.println(user.getUsername());

userServivce.Regist(user);

return "success";

}

}

实体类

package com.sy.entity;

public class User {

private String id;

private String username;

private String password;

public String getId() {

return id;

}

public void setId(String 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;

}

}

相关服务

UserService.java (接口)

package com.sy.service;

import com.sy.entity.User;

//Service层接口

public interface UserService {

//检验用户登录

User checkLogin(String username,String password);

void Regist(User user);

}

UserServiceImpl.java

package com.sy.service.Impl;

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

import org.springframework.stereotype.Service;

import com.sy.dao.UserDao;

import com.sy.entity.User;

import com.sy.service.UserService;

@Service

public class UserServiceImpl implements UserService{

@Autowired

private UserDao userDao;

/*

* 检验用户登录业务

*

*/

public User checkLogin(String username, String password) {

User user = userDao.findByUsername(username);

if(user != null && user.getPassword().equals(password)){

return user;

}

return null;

}

@Override

public void Regist(User user) {

userDao.registerByUsernameAndPassword(user.getUsername(),user.getPassword());

}

}

其他配置文件

持久层相关配置文件 sprintg-dao.xml

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx.xsd">

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx.xsd">

spring-service.xml

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx.xsd">

xmlns:xsi="http://w3.org/2001/XMLSchema-instance"

xmlns:context="http://springframework.org/schema/context"

xmlns:aop="http://springframework.org/schema/aop"

xmlns:tx="http://springframework.org/schema/tx"

xsi:schemaLocation="http://springframework.org/schema/beans

http://springframework.org/schema/beans/spring-beans.xsd

http://springframework.org/schema/context

http://springframework.org/schema/context/spring-context.xsd

http://springframework.org/schema/aop

http://springframework.org/schema/aop/spring-aop.xsd

http://springframework.org/schema/tx

http://springframework.org/schema/tx/spring-tx.xsd">

logback.xml

%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n

mybatis-config.xml

PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

"http://mybatis.org/dtd/mybatis-3-config.dtd">

JSP视图文件

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

pageEncoding="utf-8"%>

regist.jsp

<%--

Created by IntelliJ IDEA.

User: 86265

Date: 2018/1/30

Time: 10:32

To change this template use File | Settings | File Templates.

--%>

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

success.jsp

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

pageEncoding="UTF-8"%>

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

welcome,${sessionScope.user.username}!

this is success page!

点我跳到另一个页面

fail.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

pageEncoding="ISO-8859-1"%>

u are loser,this is a fail page!

anotherpage.jsp

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

pageEncoding="UTF-8"%>

${sessionScope.user.username}!!!!!

三、运行结果

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