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

<properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.compiler.source>1.7</maven.compiler.source> <maven.compiler.target>1.7</maven.compiler.target> <spring.version>4.3.18.RELEASE</spring.version> <mysql.version>5.1.48</mysql.version> <servlet.version>3.0-alpha-1</servlet.version> <commons-codec.version>1.9</commons-codec.version> <commons-dbcp.version>1.4</commons-dbcp.version> <jetty.version>8.1.8.v20121106</jetty.version> <slf4j.version>1.7.5</slf4j.version> <testng.version>6.8.7</testng.version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>4.3.18.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version> 1.4</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>3.0-alpha-1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.9.4</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>org.testng</groupId> <artifactId>testng</artifactId> <version>6.14.3</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> <scope>test</scope> </dependency> </dependencies>

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

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" ><web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http:///jsp/jstl/core" %><html><head> <title>成功</title></head><body> ${User}</body></html>

4.success1

<%@ page contentType="text/html;charset=UTF-8" language="java" %><html><head> <title>注册成功</title></head><body><a href="${pageContext.request.contextPath}/index.html" rel="external nofollow" > ${Insert}</a></body></html>

配置好Tomcat就可以运行了

很简单的登录界面

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