基于SSM框架实现简单的登录注册的示例代码
更新时间：2018年12月25日 11:39:54 作者：涛声依旧~
这篇文章主要介绍了基于SSM框架实现简单的登录注册的示例代码，小编觉得挺不错的，现在分享给大家，也给大家做个参考。一起跟随小编过来看看吧
一、环境配置工程目录
在pom.xml添加依赖
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.imooc</groupId>
<artifactId>userLogin</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<dependencies>
<dependency>
<!-- 使用junit4 用注解方式 -->
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- 补全项目依赖 -->
<!-- 1：日志 java日志：slf4j，log4j，logback，common-logging slf4j 是规范/接口 日志实现:log4j,logback,common-logging
使用：slf4j + logback -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.12</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.1</version>
</dependency>
<!-- 实现slf4j接口并整合 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.1</version>
</dependency>
<!-- 2：数据库相关依赖 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<!-- DAO框架：MyBatis依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
<!-- mybatis自身实现的spring整合依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
<!--:3：servlet web相关依赖 -->
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.4</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<!-- 4：spring依赖 -->
<!-- 1)spring核心依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<!-- 2)spring dao层依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<!-- 3)spring web相关依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
<!-- 4)spring test相关依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.2.0.RELEASE</version>
</dependency>
</dependencies>
<build>
<finalName>userLogin</finalName>
<plugins>
<!-- define the project compile level -->
<!-- maven编译用的版本控制，控制jdk的版本不会回跳 -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
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
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
">
<!-- 配置springMVC -->
<!-- 1：开启springMVC注解模式 -->
<!-- 简化配置：
(1)自动注册DefaultAnnotationHandlerMapping，AnnotationMethodHandlerAdapter
(2)提供一系列：数据绑定，数字和日期的format @NumberFormat,@DataTimeFormat
xml,json默认读写支持
-->
<mvc:annotation-driven/>
<!-- 2：配置jsp显示ViewResolver -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 3：扫描web相关的bean -->
<context:component-scan base-package="com.sy.controller" />
</beans>
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
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.sy.dao.UserDao">
<!-- 目的：为DAO接口方法提供sql语句配置 -->
<!-- 查询用户和密码进行登录 -->
<select id="findByUsername" resultType="User" parameterType="String">
select * from user where username = #{username}
</select>
<!--增加用户名和密码进行注册 -->
<insert id="registerByUsernameAndPassword">
insert into user (username,password)
values (#{username},#{password})
</insert>
</mapper>
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.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
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 配置整合mybatis过程 -->
<!-- 1:配置数据库相关参数 properties的属性:${url}-->
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 2:数据库连接池 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!-- 配置连接池属性 -->
<property name="driverClass" value="${jdbc.driverClass}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- c3p0连接池的私有属性 -->
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" value="10"/>
<!-- 关闭连接后不自动commit -->
<property name="autoCommitOnClose" value="false"/>
<!-- 获取连接超时时间 -->
<property name="checkoutTimeout" value="1000"/>
<!-- 当获取连接失败重试次数 -->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!-- 约定大于配置 -->
<!-- 3:配置sqlsessionfactory对象 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 注入数据库连接池 -->
<property name="dataSource" ref="dataSource"/>
<!-- 配置mybatis全局配置文件:mybatis-config.xml -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
<!-- 扫描entity包 使用别名 com.sy.entity.User ->User -->
<property name="typeAliasesPackage" value="com.sy.entity"/>
<!-- 扫描sql配置文件：mapping需要的xml文件 -->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!-- 4：配置扫描Dao接口的包，动态实现Dao接口，注入到Spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlsessionfactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 给出需要扫描的Dao接口包 -->
<property name="basePackage" value="com.sy.dao"/>
</bean>
</beans>
spring-service.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 扫描service包下所有使用注解的类型 -->
<context:component-scan base-package="com.sy.service"/>
<!-- 配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 注入数据库的连接池 -->
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 配置基于注解的声明式事务
默认使用注解来管理事务行为
-->
<tx:annotation-driven transaction-manager="transactionManager"/>
</beans>
logback.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<!-- encoders are by default assigned the type ch.qos.logback.classic.encoder.PatternLayoutEncoder -->
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>
<root level="debug">
<appender-ref ref="STDOUT" />
</root>
</configuration>
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 配置全局属性 -->
<settings>
<!--使用jdbc的getGeneratedKeys获取数据库自增主键值 -->
<setting name="useGeneratedKeys" value="true"/>
<!-- 使用列别名替换列名 默认：true
select name as title from table
-->
<setting name="useColumnLabel" value="true"/>
<!-- 开启驼峰命名转换：Table(create_time) -> Entity(createTime) -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
</settings>
</configuration>
JSP视图文件
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body background="images/bg1.jpg">
<form action="${pageContext.request.contextPath}/user/checkLogin" method="post">
<table>
<tr>
<td>用户名:</td>
<td><input id="username" name="username" type="text"></td>
</tr>
<tr>
<td>密码:</td>
<td><input id="password" name="password" type="password"></td>
</tr>
<tr >
<td><input type="submit" value="登录" ></td>
<td><input type="button" value="注册" onclick="window.location.href='/user/regist'"> </td>
</tr>
</table>
</form>
</body>
</html>
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" %>
<html>
<head>
<title>用户注册页面</title>
</head>
<body>
<h3>注册页面</h3>
<hr/>
<form action="${pageContext.request.contextPath}/user/doRegist" method="post">
<table border="1px">
<tr height="35px">
<td width="150px">用户名</td>
<td width="300px">
<input type="text" name="username" id="username">
</td>
</tr>
<tr height="35px">
<td>密码</td>
<td>
<input type="text" name="password" id="password">
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" id="regist" value="注册"/>
</td>
</tr>
</table>
</form>
</body>
</html>
success.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<div>
<strong> welcome,${sessionScope.user.username}! </strong>
</div>
this is success page!
<a href="${pageContext.request.contextPath}/user/anotherpage" rel="external nofollow" >点我跳到另一个页面</a>
<form action="${pageContext.request.contextPath}/user/login">
<table>
<tr>
<td><input type="submit" value="退出登录"></td>
</tr>
</table>
</form>
</body>
</html>
fail.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
u are loser,this is a fail page!
</body>
</html>
anotherpage.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<div>
<strong> ${sessionScope.user.username}!!!!! </strong>
</div>
<form action="user/outLogin">
<table>
<tr>
<td><input type="submit" value="退出登录" ></td>
</tr>
</table>
</form>
</body>
</html>
三、运行结果
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
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