Java ssm框架搭建实现登录 总
2020-07-06 11:48
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Java ssm框架搭建实现登录 总
前言
Java用ssm框架搭建实现简单登录注册等功能，与MySQL结合
准备
File–>setting–>查找Maven
新建.m2如下
新建项目
如果有红色代码
配置Tomcat
Java文件和resources文件
main下如下建两个，Java文件和resources文件
Java
resources
建立Package
配置文件
按照下图建立3个配置文件
记得加后缀名
applicationContext.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-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<!-- 1.配置数据库相关参数properties的属性：${url} -->
<context:property-placeholder location="classpath:db.properties"/>
<!-- 2.配置数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"/>
<property name="jdbcUrl" value="${jdbc.url}"/>
<property name="user" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="maxPoolSize" value="30"/>
<property name="minPoolSize" 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"/>
<!-- 扫描bean包 使用别名 -->
<property name="typeAliasesPackage" value="com.cc0701.bean"></property>
<!--配置加载映射文件 UserMapper.xml-->
<property name="mapperLocations" value="classpath:mapper/*.xml"/>
</bean>
<!-- 自动生成dao,mapper-->
<!-- 4.配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 给出需要扫描Dao接口包 -->
<property name="basePackage" value="com.cc0701.dao"/>
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
<!--自动扫描-->
<context:component-scan base-package="com.cc0701"/>
<!-- 配置事务-->
<!-- 5.配置事务管理器 -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 6.开启事务注解-->
<tx:annotation-driven></tx:annotation-driven>
</beans>
db.properties
jdbc.url=jdbc:mysql://localhost:3306/testtt?useSSL=false jdbc.username=root jdbc.password=123456 jdbc.driver=com.mysql.jdbc.Driver
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:mvc="http://www.springframework.org/schema/mvc" 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-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd"> <!-- 1.注解扫描位置--> <context:component-scan base-package="com.cc0701.controller" /> <!-- 2.配置映射处理和适配器--> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> <!-- 3.视图的解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/pages/" /> <property name="suffix" value=".jsp" /> </bean> </beans>
UserMapper.xml
resources下建一个Directory------mapper
mapper下建一个File-----UserMapper
<?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.cc0701.dao.UserDao">
<select id="findUserByName" parameterType="String" resultType="user">
select * from user where name=#{name}
</select>
<delete id="deleteById" parameterType="Integer">
delete from user where id=#{id}
</delete>
<insert id="add" parameterType="User">
insert into user (name,password) values (#{name},#{password})
</insert>
<select id="findAll" resultType="user">
select * from user
</select>
<select id="findUserById" parameterType="Integer" resultType="User">
select * from user where id=#{id}
</select>
<update id="update" parameterType="User">
update user set name=#{name},password=#{password} where id=#{id}
</update>
<select id="searchByName" parameterType="String" resultType="User">
select * from user where name like concat('%',#{name},'%')
</select>
</mapper>
cc0701
User
bean下建User
package com.cc0701.bean;
public class User {
private int id;
private String name;
private String password;
@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", password='" + password + '\'' +
'}';
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
UserDao
dao下建UserDao
package com.cc0701.dao;
import com.cc0701.bean.User;
import java.util.List;
public interface UserDao {
User findUserByName(String name);
List<User> findAll();
int deleteById(Integer id);
int add(User user);
int update(User user);
User findUserById(Integer id);
List<User> searchByName(String name);
}
UserService
service下建UserService
package com.cc0701.service;
import com.cc0701.bean.User;
import java.util.List;
public interface UserService {
boolean login(String name,String password);
boolean delete(Integer id);
List<User> findAll();
boolean add(User user);
User findById(Integer id);
boolean update(User user);
List<User> searchByName(String name);
}
UserServiceImpl
Impl下建UserServiceImpl
package com.cc0701.service.Impl;
import com.cc0701.bean.User;
import com.cc0701.dao.UserDao;
import com.cc0701.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserDao userDao;
@Override
public boolean login(String name, String password) {
User user = userDao.findUserByName(name);
if (user!=null&&user.getPassword().equals(password)){
return true;
}
return false;
}
@Override
public boolean delete(Integer id) {
int del = userDao.deleteById(id);
if (del>0){
return true;
}
return false;
}
@Override
public List<User> findAll() {
return userDao.findAll();
}
@Override
public boolean add(User user) {
int add = userDao.add(user);
if (add>0){
return true;
}
return false;
}
@Override
public User findById(Integer id) {
return userDao.findUserById(id);
}
@Override
public boolean update(User user) {
int upd = userDao.update(user);
if(upd>0){
return true;
}
return false;
}
@Override
public List<User> searchByName(String name) {
return userDao.searchByName(name);
}
}
UserController
controller下建UserController
package com.cc0701.controller;
import com.cc0701.bean.User;
import com.cc0701.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.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpSession;
import java.util.List;
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/login.do")
public ModelAndView login(User user, HttpSession session){
boolean flag = userService.login(user.getName(),user.getPassword());
ModelAndView modelAndView = new ModelAndView();
if (flag){
session.setAttribute("user",user);
modelAndView.setViewName("../ok");
}else {
modelAndView.setViewName("../failure");
}
return modelAndView;
}
@RequestMapping("/findAll.do") //.../findAll.do?name=
public ModelAndView findAll(@RequestParam(value = "name",defaultValue = "")String name){
ModelAndView modelAndView = new ModelAndView();
List<User> userList = userService.searchByName(name);
System.out.println("userService中的内容为："+userList);
modelAndView.addObject("userList",userList);
modelAndView.setViewName("../main");
System.out.println("modelAndView中的内容为："+modelAndView);
return modelAndView;
}
@RequestMapping("/delete.do")
public String delete(int id){
boolean del = userService.delete(id);
if (del){
return "redirect:findAll.do";
}
return "../failure";
}
@RequestMapping("/add.do")
public String add(User user){
boolean add = userService.add(user);
if (add){
return "redirect:findAll.do";
}
return "../failure";
}
@RequestMapping("/findById.do")
public String findById(int id, Model model){
User user = userService.findById(id);
model.addAttribute("user",user);
return "../modify";
}
@RequestMapping("/update.do")
public String update(User user){
boolean upd = userService.update(user);
if (upd){
return "redirect:findAll.do";
}
return "../failure";
}
}
LoginFilter
filter下建LoginFilter
package com.cc0701.filter;
import com.cc0701.bean.User;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
public class LoginFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) servletRequest;
HttpServletResponse response = (HttpServletResponse) servletResponse;
HttpSession session = request.getSession();
User user = (User) session.getAttribute("user");
//getRequestURL()返回去路径；getRequestURI()返回去host（域名或者IP）部分的零件
String uri = request.getRequestURI();
System.out.println(uri.indexOf("findAll.do"));
System.out.println(uri.indexOf("login.do"));
if (user==null && uri.indexOf("login.do")==-1){
response.sendRedirect(request.getContextPath()+"/");
}else {
filterChain.doFilter(request,response);
}
}
@Override
public void destroy() {
}
}
Web
failure.jsp
webapp下建failure.jsp
<%-- Created by IntelliJ IDEA. User: 18235 Date: 2020/7/1 Time: 12:12 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>操作失败</title> </head> <body> <h1>操作失败</h1> </body> </html>
ok.jsp
webapp下建ok.jsp
<%-- Created by IntelliJ IDEA. User: 18235 Date: 2020/7/1 Time: 11:32 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>成功</title> </head> <body> <h1>成功</h1> </body> </html>
index.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>$Title$</title> </head> <body> <h1>登录</h1> <form action="/user/login.do" method="post"> name:<input name="name" type="text"> password:<input name="password" type="password"> <input type="submit" value="login"> </form> <a href="add.jsp">注册</a> <a href="/user/findAll.do">查看</a> </body> </html>
add.jsp
webapp下建add.jsp
<%-- Created by IntelliJ IDEA. User: 18235 Date: 2020/7/2 Time: 14:03 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>注册</title> </head> <body> <h1>注册</h1> <div> <form action="/user/add.do"> <div> <label for="name">用户名：</label> <input name="name" type="text" id="name"> </div> <div> <label for="password">密码：</label> <input name="password" type="text" id="password"> </div> <div> <input type="submit" value="注册"> </div> <a href="javascript:window.history.go(-1)">返回</a> </form> </div> </body> </html>
main.jsp
webapp下建main.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
Created by IntelliJ IDEA.
User: 18235
Date: 2020/7/2
Time: 9:22
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>列表</title>
</head>
<body>
<div>
<form action="/user/findAll.do">
<input id="name" type="search" name="name" value="${name}">
<button onclick="form.submit()">搜索</button>
</form>
<table>
<thead>
<tr>
<th>ID</th>
<th>用户名</th>
<th>密码</th>
<th>操作</th>
</tr>
</thead>
<thead>
<c:forEach items="${userList}" var="user">
<tr>
<td>${user.id}</td>
<td>${user.name}</td>
<td>${user.password}</td>
<td>
<a href="${pageContext.request.contextPath}/user/delete.do?id=${user.id}">删除</a>
<a href="${pageContext.request.contextPath}/user/findById.do?id=${user.id}">修改</a>
</td>
</tr>
</c:forEach>
</thead>
</table>
</div>
</body>
</html>
modify.jsp
webapp小建modify.jsp
<%--
Created by IntelliJ IDEA.
User: 18235
Date: 2020/7/3
Time: 9:40
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改</title>
</head>
<body>
<div>
<form action="/user/update.do">
<input name="id" value="${user.id}" type="hidden">
<div>
<label for="name">用户名：</label>
<input name="name" type="text" id="name" value="${user.name}">
</div>
<div>
<label for="password">密码：</label>
<input name="password" type="text" id="password" value="${user.password}">
</div>
<div>
<input type="submit" value="修改">
</div>
<a href="javascript:window.history.go(-1)">返回</a>
</form>
</div>
</body>
</html>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <!-- 配置加载类路径的配置文件 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:applicationContext.xml</param-value> </context-param> <!-- 配置监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <!-- 解决中文乱码过滤器 --> <filter> <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 前端控制器（加载classpath:spring-mvc.xml 服务器启动创建servlet） --> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 配置初始化参数，创建完DispatcherServlet对象，加载springmvc.xml配置文件 --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <!-- 服务器启动的时候，让DispatcherServlet对象创建 --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> <filter> <filter-name>loginFilter</filter-name> <filter-class>com.cc0701.filter.LoginFilter</filter-class> </filter> <filter-mapping> <filter-name>loginFilter</filter-name> <url-pattern>*.do</url-pattern> </filter-mapping> </web-app>
结果
登录
只有登录了才可以进行其他操作（因为添加了过滤器即LoginFilter类）
查看
删除
修改
注册
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