这篇文章主要介绍了IDEA实现 springmvc的简单注册登录功能,本文通过实例代码给大家介绍的非常详细，对大家的学习或工作具有一定的参考借鉴价值，需要的朋友可以参考下
1.基本环境搭建
spring简介
SpringMVC框架是以请求为驱动，围绕Servlet设计，将请求发给控制器，然后通过模型对象，分派器来展示请求结果视图。其中核心类是DispatcherServlet，它是一个Servlet，顶层是实现的Servlet接口。
project创建
在图中填上项目名称即可，其他直接next
如上图所示，创建两个包，并且指定包的类型，如下图，java包指定为Sources Root,resouces包指定为Resources root
整个目录结构：
pom依赖
UTF-8 1.7 1.7 4.3.18.RELEASE 5.1.48 3.0-alpha-1 1.9 1.4 8.1.8.v20121106 1.7.5 6.8.7 org.springframework spring-core 4.3.18.RELEASE org.springframework spring-beans ${spring.version} org.springframework spring-jdbc ${spring.version} org.springframework spring-context ${spring.version} org.springframework spring-webmvc ${spring.version} org.springframework spring-context-support ${spring.version} org.springframework spring-tx ${spring.version} mysql mysql-connector-java ${mysql.version} commons-dbcp commons-dbcp 1.4 javax.servlet servlet-api 3.0-alpha-1 provided javax.servlet.jsp jsp-api 2.2 org.aspectj aspectjweaver 1.9.4 org.springframework spring-web ${spring.version} jstl jstl 1.2 org.testng testng 6.14.3 test org.springframework spring-test ${spring.version} test
2.
1.domain 实体类
package domain; public class User { private String username; private String password; 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; } }2.dao层（实现了查询和插入）
package dao; import domain.User; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.stereotype.Repository; @Repository public class UserDao{ private JdbcTemplate jdbcTemplate; private final static String sql=" Select count(*) from user_name where username=? and password=? "; private final static String sqlInsert="insert into user_name(username,password) values (?,?)"; @Autowired public void setJdbcTemplate(JdbcTemplate jdbcTemplate) { this.jdbcTemplate = jdbcTemplate; } public int FindUser(String username,String password) { return jdbcTemplate.queryForObject(sql,new Object[]{username,password},Integer.class); } // public void InsertUser(String username,String password){ jdbcTemplate.update(sqlInsert, username,password); } }3.service层
package service; import dao.UserDao; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class UserService { private UserDao userdao; @Autowired public void setUserDao(UserDao userdao) { this.userdao = userdao; } public boolean Match(String username,String password) { int count=userdao.FindUser(username,password); return count>0; } public void InsertUser(String username,String password){ userdao.InsertUser(username,password); } }4.controller层（这里用的包名为web）
package web; import domain.User; 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.servlet.ModelAndView; import service.UserService; import javax.servlet.http.HttpServletRequest; @Controller public class UserController { private UserService userService; @Autowired public void setUserService(UserService userService) this.userService = userService; } @RequestMapping(value = "/index.html") public String tologin() { return "login"; } @RequestMapping(value = "/login") public ModelAndView login(HttpServletRequest request, User user){ boolean isValidUser=userService.Match(user.getUsername(),user.getPassword()); if (isValidUser){ request.getSession().setAttribute("User",user.getUsername()+":登录成功"); return new ModelAndView("success"); }else{ return new ModelAndView("login"); } } @RequestMapping("/insert") public String InsertUser(User user, Model model){ userService.InsertUser(user.getUsername(),user.getPassword()); model.addAttribute("Insert","注册成功"); return "success1"; } @RequestMapping("/insertPage") public String InsertPage() { return "register"; } }3.xml配置
1.web.xml
Archetype Created Web Application Archetype Created Web Application org.springframework.web.context.ContextLoaderListener contextConfigLocation classpath:applicationContext.xml dispatcherServlet org.springframework.web.servlet.DispatcherServlet contextConfigLocation classpath:dispatcher-servlet.xml 1 dispatcherServlet /
resource里面新建两个spring xml文件
2.applicationContext.xml
spring的配置文件applicationContext.xml中的一些配置的作用。
com.mysql.jdbc.Driver jdbc:mysql://localhost:3306/web1 root 123
3.dispatcher-servlet.xml
4.Jsp
1.login
<%@ page contentType="text/html;charset=UTF-8" language="java" %><%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>注册主页 ${error}
2.register
<%@ page contentType="text/html;charset=UTF-8" language="java" %>Title
3.success
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>成功 ${User}
4.success1
<%@ page contentType="text/html;charset=UTF-8" language="java" %>注册成功 ${Insert}
配置好Tomcat就可以运行了
很简单的登录界面
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