2.搭建配置最简单的spring mvc 工程-基础版

目标：用最少的东西，搭建可以运行的最最基础的springMvc登陆校验项目！

spring 4

1.首先配置pom.xml引入spring 相关jar， 引用都有注释， 无关的可以暂时不引用。

<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.gof</groupId>
  <artifactId>gof-web</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>gof-web</name>
  <url>http://maven.apache.org</url>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <springVersion>4.3.0.RELEASE</springVersion>
    <jacksonVersion>2.9.3</jacksonVersion>
    <mybatisVersion>3.4.4</mybatisVersion>
    <mybatisSpringVersion>1.3.0</mybatisSpringVersion>
    <c3p0Version>0.9.5.2</c3p0Version>
    <mysqlVersion>5.1.38</mysqlVersion>
    <slf4jVersion>1.7.21</slf4jVersion>
    <log4jVersion>1.2.17</log4jVersion>
    <jstlVersion>1.2</jstlVersion>
    <servletApiVersion>3.1.0</servletApiVersion>
    <junitVersion>4.12</junitVersion>
  </properties>
  <dependencies>
    <!--junit 测试开始-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junitVersion}</version>
      <scope>test</scope>
    </dependency>
    <!--junit 测试结束-->

    <!--Slf4j + Log4j日志依赖 开始-->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4jVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4jVersion}</version>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4jVersion}</version>
    </dependency>
    <!--Slf4j + Log4j日志依赖 结束-->

    <!--JavaEE web容器提供 开始-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>${servletApiVersion}</version>
      <scope>provided</scope>
    </dependency>
    <!--JavaEE web容器提供 开始-->

    <!--Jsp 常用标签库依赖 开始-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>${jstlVersion}</version>
      <scope>runtime</scope>
    </dependency>
    <!--Jsp 常用标签库依赖 结束-->

    <!-- SpringMVC模块依赖 开始-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>${jacksonVersion}</version>
    </dependency>
    <!-- SpringMVC模块依赖 结束-->

    <!-- Mybatis模块依赖 开始-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatisVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>${mybatisSpringVersion}</version>
    </dependency>
    <!-- Mybatis模块依赖 结束-->

    <!--C3p0 数据库连接池依赖 开始-->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>${c3p0Version}</version>
    </dependency>
    <!--C3p0 数据库连接池依赖 结束-->

    <!--Jdbc 驱动依赖 开始 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysqlVersion}</version>
    </dependency>
    <!--Jdbc 驱动依赖 结束 -->

    <!--Spring常用模块依赖 开始-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <!--Spring常用模块依赖结束-->
  </dependencies>

</project>

2.配置web.xml， 这里使用servlet3.1, 配置相关的applicationContext.xml， 这里是监听spring, 以及引用spring-mvc.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_3_1.xsd"
         version="3.1">
  <!-- *** 初始化Spring容器开始 *** -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <!-- === 初始化Spring容器结束 === -->

  <!-- *** 初始化SpringMVC开始 *** -->
  <servlet>
    <servlet-name>springMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springMVC</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <!-- === 初始化SpringMVC结束 === -->
</web-app>

3. 配置 applicationContext.xml, 这里仅配置spring组件扫描，后期其他再继续配置

<?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:p="http://www.springframework.org/schema/p"
       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">
    <!-- 注解扫描：扫描@component,@service,@Repository等注解,指定com.gof -->
    <context:component-scan base-package="com.gof" />
<!--  <context:annotation-config />仅能够在已经在已经注册过(applicationContext)的bean上面起作用。-->

</beans>

4.配置spring-mvc.xml, 配置了注解，以及指定扫描的包， 以及指定spring mvc返回的文件目录格式等

<?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
         http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    <!-- spring mvc注解：@controller,@RequestMapping等 -->
    <mvc:annotation-driven/>
    
    <!-- 对进入DispatcherServlet的URL进行筛查，如果发现是静态资源的请求，就将该请求转由Web应用服务器默认的Servlet处理，如果不是静态资源的请求，才由DispatcherServlet继续处理。 -->
    <mvc:default-servlet-handler/>
    
    <!-- 指定spring mvc 返回的文件格式后缀，目录， 也可以不指定，就进行移除-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/"/>
        <property name="suffix" value=".html"/>
        <property name="contentType" value="text/html"/>
    </bean>
    
    <!--只扫描@Controller注解类,否则影响事务-->
    <context:component-scan base-package="com.gof" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
   
</beans>

5. 创建User.java 

package com.gof.domain;

import java.io.Serializable;

public class User implements Serializable{

    private static final long serialVersionUID = 1L;
    
    private String userId;
    
    private String userName;
    
    private String password;
    
    private String sex;
    
    private int age;

    
    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    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;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
    
    
    
}

6.创建接口:IUserService

package com.gof.service;

import com.gof.domain.User;

public interface IUserService {
    
    public User getUserByUserName(String userName);
    
}

7.创建实现类：UserService， 这里没有使用到数据，所以数据暂时写固定

package com.gof.service;

import java.util.HashMap;
import java.util.Map;

import org.springframework.stereotype.Component;

import com.gof.domain.User;

@Component
public class UserService implements IUserService{
    /**
     * 取user
     */
    @Override
    public User getUserByUserName(String userName) {
        Map<String, User> userMap = new HashMap<String, User>();
        //假设userName唯一
        User userA = new User();
        userA.setUserId("XXAFSFDxafdsafds");
        userA.setUserName("jihy");
        userA.setPassword("123456");
    
        User userB= new User();
        userA.setUserId("XXAFSFDxafdsafds");
        userB.setUserName("jihy2");
        userB.setPassword("123456");
        
        userMap.put(userA.getUserName(), userA);
        userMap.put(userB.getUserName(), userB);
        
        return userMap.get(userName);
    }

}

8.控制层：UserController.java

package com.gof.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

import com.gof.domain.JsonResponse;
import com.gof.domain.User;
import com.gof.service.IUserService;

@Controller
public class LoginController {
    @Autowired
    private IUserService userService;
    /**
     * 登陆主页
     * @return
     */
    @RequestMapping(value="/loginIndex")
    public String loginIndex(){
        
        return "loginIndex";
    }
    /**
     * 验证登陆请求
     * @param userName
     * @param password
     * @return
     */
    @RequestMapping(value="/login")
    @ResponseBody
    public JsonResponse login(@RequestParam String userName, @RequestParam String password){
        JsonResponse response = new JsonResponse();
        response.setStatus("ERROR");
        User user = userService.getUserByUserName(userName);
        if (user == null) {
            return response;
        }
        if (!password.equals(user.getPassword())) {
            return response;
        }
        response.setStatus("SUCCESS");
        return response;
    }
}

9.返回对象：JsonResponse.java

package com.gof.domain;

import java.io.Serializable;

public class JsonResponse implements Serializable{
    
    private static final long serialVersionUID = 1L;

    private String status;
    
    private Object result;

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public Object getResult() {
        return result;
    }

    public void setResult(Object result) {
        this.result = result;
    }
    
    
}

10.l登陆主页：loginIndex.html

<html>
<head>
<script type="text/javascript" src="./static/js/lib/jquery/jquery-1.8.2.js"></script>
</head>
<body>
<h2>Hello World!</h2>

<form name="loginForm">
    <input type="input" name="userName" id="userName" value="jihy"/>
    <input type="password" name="password" id="password" value="123456"/>
    <input type="button" name="提交"/>
</form>
</body>
<script type="text/javascript">
    alert($("form").serialize());
    $(function(){
        $.ajax({
            type:"POST",
            url: "./login", 
            data: $("form").serialize(),
            success: function(data){
            alert(JSON.stringify(data));
          }});
    })
</script>
</html>

11.引用了jquery插件：

12：完成， 使用上面代码， 可以运行的项目！