ssm登录
Posted 冷血～多好
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了ssm登录相关的知识，希望对你有一定的参考价值。
明晚一定早点睡----------
项目目录
首先配置xml文件(spring的配置文件可以全部整合到一起，但是为了区分）
spring-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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd">
<!-- 配置整合mybatis -->
<!-- 1.关联数据库文件 -->
<context:property-placeholder location="classpath:database.properties"/>
<!-- 2.数据库连接池 -->
<!--数据库连接池
dbcp 半自动化操作 不能自动连接
c3p0 自动化操作（自动的加载配置文件 并且设置到对象里面）
-->
<!-- <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!-- 配置连接池属性-->
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${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="10000"/>
<!-- 当获取连接失败重试次数-->
<property name="acquireRetryAttempts" value="2"/>
</bean>
<!-- 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MyBaties全局配置文件:mybatis-config.xml -->
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!-- 4.配置扫描Dao接口包，动态实现Dao接口注入到spring容器中 -->
<!--解释 ：https://www.cnblogs.com/jpfss/p/7799806.html-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
<!-- 给出需要扫描Dao接口包 -->
<property name="basePackage" value="com.chen.dao"/>
</bean>
</beans>spring-mvc.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: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/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 配置SpringMVC -->
<!-- 1.开启SpringMVC注解驱动 -->
<mvc:annotation-driven />
<!-- 2.静态资源默认servlet配置-->
<mvc:default-servlet-handler/>
<!--配置静态资源的访问映射，此设置中的文件，将不被前端控制器拦截-->
<!-- <mvc:resources mapping="/statics/js/**" location="statics/js/"/>
<mvc:resources mapping="/statics/css/**" location="statics/css/"/>
<mvc:resources mapping="/statics/js/**" location="statics/images/"/>
-->
<!-- 3.配置jsp 显示ViewResolver视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
<!--解决json返回数据乱码-->
<mvc:annotation-driven>
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8"/>
</bean>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="objectMapper">
<bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
<property name="failOnEmptyBeans" value="false"/>
</bean>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!--关于拦截器的配置-->
<mvc:interceptors>
<mvc:interceptor>
<!--/** 包括路径及其子路径-->
<!--/admin/* 拦截的是/admin/add等等这种 , /admin/add/user不会被拦截-->
<!--/admin/** 拦截的是/admin/下的所有-->
<mvc:mapping path="/**"/>
<!--不拦截静态资源-->
<mvc:exclude-mapping path="/statics/**"/>
<!--bean配置的就是拦截器-->
<bean class="com.chen.interceptor.LoginInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
<!-- 4.扫描web相关的bean -->
<context:component-scan base-package="com.chen.controller" />
</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: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/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 配置SpringMVC -->
<!-- 1.开启SpringMVC注解驱动 -->
<mvc:annotation-driven />
<!-- 2.静态资源默认servlet配置-->
<mvc:default-servlet-handler/>
<!--配置静态资源的访问映射，此设置中的文件，将不被前端控制器拦截-->
<!-- <mvc:resources mapping="/statics/js/**" location="statics/js/"/>
<mvc:resources mapping="/statics/css/**" location="statics/css/"/>
<mvc:resources mapping="/statics/js/**" location="statics/images/"/>
-->
<!-- 3.配置jsp 显示ViewResolver视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
<!--解决json返回数据乱码-->
<mvc:annotation-driven>
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8"/>
</bean>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="objectMapper">
<bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
<property name="failOnEmptyBeans" value="false"/>
</bean>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<!--关于拦截器的配置-->
<mvc:interceptors>
<mvc:interceptor>
<!--/** 包括路径及其子路径-->
<!--/admin/* 拦截的是/admin/add等等这种 , /admin/add/user不会被拦截-->
<!--/admin/** 拦截的是/admin/下的所有-->
<mvc:mapping path="/**"/>
<!--不拦截静态资源-->
<mvc:exclude-mapping path="/statics/**"/>
<!--bean配置的就是拦截器-->
<bean class="com.chen.interceptor.LoginInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
<!-- 4.扫描web相关的bean -->
<context:component-scan base-package="com.chen.controller" />
</beans>
applicationContext.xml（合并spring xml文件）
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<import resource="spring/spring-dao.xml"/>
<import resource="spring/spring-service.xml"/>
<import resource="spring/spring-mvc.xml"/>
</beans>database.properties
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<import resource="spring/spring-dao.xml"/>
<import resource="spring/spring-service.xml"/>
<import resource="spring/spring-mvc.xml"/>
</beans>mybatis-config.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<import resource="spring/spring-dao.xml"/>
<import resource="spring/spring-service.xml"/>
<import resource="spring/spring-mvc.xml"/>
</beans>web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<!--DispatcherServlet-->
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!--一定要注意:我们这里加载的是总的配置文件，之前被这里坑了！-->
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--encodingFilter-->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--Session过期时间-->
<session-config>
<session-timeout>35</session-timeout>
</session-config>
</web-app>
ok,到这里已完成了一半工作了，配置地狱不是说着玩的--
然后开始写业务
LoginController.java
package com.chen.controller;
import com.chen.pojo.Administrator;
import com.chen.service.LoginService;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;
@Controller
public class LoginController {
@Resource(name="LoginServiceImpl")
private LoginService loginService;
//跳转到登陆页面
@RequestMapping("/jumplogin")
public String jumpLogin() throws Exception {
return "sucessful";
}
//跳转到成功页面
@RequestMapping("/jumpSuccess")
public String jumpSuccess() throws Exception {
System.out.println("xxx");
return "sucessful";
}
//登陆提交
@RequestMapping("/login")
@ResponseBody
public String login(HttpSession session, Administrator administrator) throws Exception {
// 向session记录用户身份信息
System.out.println("接收前端===" + administrator.getAccount());
Map<String, Object> map = new HashMap<String, Object>();
map.put("account", administrator.getAccount());
map.put("password", administrator.getPassword());
Administrator administrator2 = loginService.queryAdministrator(map);
System.out.println(administrator);
session.setAttribute("user", administrator2);
if (administrator2!=null) {
return "成功1";
}
else {
return "失败1";
}
}
//退出登陆
@RequestMapping("logout")
public String logout(HttpSession session) throws Exception {
// session 过期
session.invalidate();
return "login";
}
}
LoginMapper.java
package com.chen.dao;
import com.chen.pojo.Administrator;
import java.util.Map;
public interface LoginMapper {
Administrator queryAdministrator(Map<String,Object> map);//万能的Map
}
LoginMapper.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.chen.dao.LoginMapper">
<!--id为方法名，parameterType为传参类型，resultType为结果返回类型-->
<select id="queryAdministrator" parameterType="map" resultType="Administrator">
select *from website.administrator where account =#{account} and password =#{password}
</select>
</mapper>
LoginInterceptor.java
package com.chen.interceptor;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
public class LoginInterceptor implements HandlerInterceptor {
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws ServletException, IOException {
// 如果是登陆页面则放行
System.out.println("uri: " + request.getRequestURI());
HttpSession session = request.getSession();
if(request.getRequestURI().contains("/login")) {
System.out.println("11111111111111111111");
return true;
}
// 如果用户已登陆也放行
else if(session.getAttribute("user") != null){
System.out.println("22222222222");
return true;
}
// 用户没有登陆跳转到登陆页面
else{
System.out.println("333333333333");
request.getRequestDispatcher("/WEB-INF/view/login.jsp").forward(request, response);
}
return false;
}
public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
System.out.println("------------处理后------------");
}
public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
System.out.println("------------清理------------");
}
}
Administrator.java(这里使用了Lombok，没有用的小伙伴注意了，可以自己手动生成getter和setter,构造方法等）
package com.chen.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Administrator {
private int id;
private String name;
private int account;
private String password;
private String logintime;
private String outtime;
private int frequency;
}
LoginService.java
package com.chen.service;
import com.chen.pojo.Administrator;
import java.util.Map;
public interface LoginService {
Administrator queryAdministrator(Map<String,Object> map);//万能的Map
}
LoginServiceImpl.java
package com.chen.service;
import com.chen.dao.LoginMapper;
import com.chen.pojo.Administrator;
import org.springframework.stereotype.Repository;
import java.util.Map;
@Repository
public class LoginServiceImpl implements LoginService{
//调用dao层的操作，设置一个set接口，方便Spring管理
private LoginMapper loginMapper;
public void setLoginMapper(LoginMapper loginMapper) {
this.loginMapper = loginMapper;
}
public Administrator queryAdministrator(Map<String, Object> map) {
return loginMapper.queryAdministrator( map);
}
}
数据库
然后接下来写前端页面
login.jsp
<%--
Created by IntelliJ IDEA.
User: 86151
Date: 2021/5/17
Time: 16:42
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>博客后台</title>
<link rel="stylesheet" type="text/css" href="..${pageContext.request.contextPath}/statics/css/style.css">
<%--
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script>
--%>
<script src="../statics/js/jquery-3.6.0.js"></script>
<script>
function login(){
$.post("${pageContext.request.contextPath}/login",
{
account:$("#account").val(),
password:$("#password").val()
},
function(data,status){
alert("数据: \\n" + data + "\\n状态: " + status);
});
}
</script>
</head>
<body>
<div class="zxcf_nav_wper">
<div class="zxcf_nav clearfix px1000">
<div class="zxcf_nav_l fl"><img src="../statics/images/zxcf_logo.png" alt=""></div>
<div class="zxcf_nav_r fr">
<img src="../statics/images/lg_pic01.png" alt="">
</div>
</div>
</div>
<!-- end -->
<div class="login_con_wper">
<div class="login_con px1000 ">
<div class="lg_section clearfix">
<div class="lg_section_l fl">
<img src="../statics/images/lg_bg02.png">
</div>
<!-- end l -->
<div class="lg_section_r fl">
<h2 class="lg_sec_tit clearfix">
<span class="fl">登录</span>
</h2>
<form >
<fieldset>
<p class="mt20">
<input type="text" placeholder="用户名/手机" class="lg_input01 lg_input" name="account" id="account">
</p>
<p class="mt20">
<input type="text" placeholder="密码" class="lg_input02 lg_input" name="password" id="password">
</p>
<p class="clearfix lg_check"><span class="fl"><input type="checkbox">记住用户名</span><a href="#" class="fr">忘记密码？找回</a></p>
<%-- <p><a href="${pageContext.request.contextPath}/login" class="lg_btn">立即登陆</a></p>--%>
</fieldset>
</form>
<button type="submit" onclick="login()"><a class="lg_btn">立即登陆</a></button>
</div>
</div>
</div>
</div>
<div class="zscf_bottom_wper">
<div class="zscf_bottom px1000 clearfix">
<p class="fl">© 2020 </p>
<p class="fr">
</p>
</div>
</div>
</body>
</html>
sucessful.jsp
<%--
Created by IntelliJ IDEA.
User: 86151
Date: 2021/5/17
Time: 18:24
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<h1>登陆成功</h1>
</body>
</html>
index.jsp
<%--
Created by IntelliJ IDEA.
User: 86151
Date: 2021/5/16
Time: 20:22
To change this template use File | Settings | File Templates.
--%>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML>
<html>
<head>
<title>首页</title>
<style type="text/css">
a {
text-decoration: none;
color: black;
font-size: 18px;
}
h3 {
width: 180px;
height: 38px;
margin: 100px auto;
text-align: center;
line-height: 38px;
background: deepskyblue;
border-radius: 4px;
}
</style>
</head>
<body>
<h3>
<a href="${pageContext.request.contextPath}/jumplogin">点击进入登录页</a>
</h3>
</body>
</html>上图（但是你们没有css的样式代码，所以可能会有点丑陋o)
以上是关于ssm登录的主要内容，如果未能解决你的问题，请参考以下文章