spring mvc 和ajax异步交互完整实例

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Spring MVC 异步交互demo:

1.jsp页面:

<%@ page language="java" contentType="text/html; charset=utf-8"  
    pageEncoding="utf-8"%>  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
<html>  
<head>  
<script type="text/javascript" src="js/jquery-2.1.3.js"></script>  
<script type="text/javascript" src="js/jquery-2.1.3.min.js"></script>  
<meta http-equiv="Content-Type" content="text/html; charset=utf8">  
<title>Insert title here</title>  
<script type="text/javascript">  
    function ajaxTest(){  
        $.ajax({  
        data:"name="+$("#name").val(),  
        type:"GET",  
        dataType: json,  
        url:"user/login.do",  
        error:function(data){  
            alert("出错了!!:"+data.msg);  
        },  
        success:function(data){  
            alert("success:"+data.msg);  
            $("#result").html(data.msg) ;  
        }  
        });  
    }  
</script>  
</head>  
<body>  
    <input type="text" name="name" id="name"/>  
    <input type="submit" value="登录" onclick="ajaxTest();"/>  
    <div id="result"></div>  
</body>  
</html>  

2.controller:

package xm.zjl.controller;  
  
import java.io.IOException;  
import java.util.HashMap;  
import java.util.Map;  
  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
  
import org.springframework.stereotype.Controller;  
import org.springframework.web.bind.annotation.RequestMapping;  
import org.springframework.web.bind.annotation.ResponseBody;  
  
/** 
 * 登录controller 
 *  
 * @author Administrator 
 * 
 */  
@Controller  
@RequestMapping("/user/*")  
public class LoginController {  
    @RequestMapping(value="login.do")  
    public @ResponseBody Map<String,Object> login(HttpServletRequest request,HttpServletResponse response) throws IOException{  
        System.out.println(request.getParameter("name"));  
        Map<String,Object> map = new HashMap<String,Object>();  
          
        if(request.getParameter("name").equals("123")){  
            System.out.println("城东");  
            map.put("msg", "成功");  
        }else{  
            System.out.println("失败");  
            map.put("msg", "失败");  
        }  
        return map;  
    }  
      
}  

3.pom文件:

<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/maven-v4_0_0.xsd">  
    <modelVersion>4.0.0</modelVersion>  
    <groupId>xiaoma</groupId>  
    <artifactId>zjl</artifactId>  
    <packaging>war</packaging>  
    <version>0.0.1-SNAPSHOT</version>  
    <name>zjl Maven Webapp</name>  
    <url>http://maven.apache.org</url>  
    <dependencies>  
        <dependency>  
            <groupId>junit</groupId>  
            <artifactId>junit</artifactId>  
            <version>3.8.1</version>  
            <scope>test</scope>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-webmvc</artifactId>  
            <version>4.1.0.RELEASE</version>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-web</artifactId>  
            <version>4.1.0.RELEASE</version>  
        </dependency>  
        <dependency>  
            <groupId>com.fasterxml.jackson.core</groupId>  
            <artifactId>jackson-databind</artifactId>  
            <version>2.5.0</version>  
        </dependency>  
        <dependency>  
            <groupId>commons-beanutils</groupId>  
            <artifactId>commons-beanutils</artifactId>  
            <version>1.9.2</version>  
        </dependency>  
        <dependency>  
            <groupId>org.codehaus.jackson</groupId>  
            <artifactId>jackson-mapper-asl</artifactId>  
            <version>1.9.13</version>  
        </dependency>  
  
        <dependency>  
            <groupId>org.codehaus.jackson</groupId>  
            <artifactId>jackson-core-asl</artifactId>  
            <version>1.9.13</version>  
        </dependency>  
    </dependencies>  
    <build>  
        <finalName>zjl</finalName>  
        <plugins>  
            <plugin>  
                <groupId>org.mortbay.jetty</groupId>  
                <artifactId>jetty-maven-plugin</artifactId>  
                <configuration>  
                    <stopPort>9966</stopPort>  
                    <stopKey>foo</stopKey>  
                    <scanIntervalSeconds>0</scanIntervalSeconds>  
                    <connectors>  
                        <connector implementation="org.eclipse.jetty.server.nio.SelectChannelConnector">  
                            <port>8088</port>  
                            <maxIdleTime>60000</maxIdleTime>  
                        </connector>  
                    </connectors>  
                    <webAppConfig>  
                        <contextPath>/</contextPath>  
                    </webAppConfig>  
                </configuration>  
            </plugin>  
  
            <plugin>  
                <groupId>org.apache.tomcat.maven</groupId>  
                <artifactId>tomcat7-maven-plugin</artifactId>  
                <version>2.2</version>  
                <configuration>  
                    <port>8088</port>  
                    <path>/</path>  
                    <uriEncoding>UTF-8</uriEncoding>  
                </configuration>  
            </plugin>  
        </plugins>  
    </build>  
</project>  

这里注意如果相关json包没有添加到pom.xml文件中会报:406 not acceptable 
4.spring-servlet.xml文件:

<beans xmlns="http://www.springframework.org/schema/beans"    
 xmlns:context="http://www.springframework.org/schema/context"    
 xmlns:p="http://www.springframework.org/schema/p"    
 xmlns:mvc="http://www.springframework.org/schema/mvc"    
 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-3.0.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-3.0.xsd">    
     <!-- 启动注解驱动的Spring MVC功能,注册请求url和注解POJO类方法的映射-->    
     <mvc:annotation-driven />    
     <!-- 启动包扫描功能,以便注册带有@Controller、@Service、@repository、@Component等注解的类成为spring的bean -->    
     <context:component-scan base-package="xm.zjl.controller" />    
     <!-- 对模型视图名称的解析,在请求时模型视图名称添加前后缀 -->    
     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/" p:suffix=".jsp" />    
</beans>    

5.web.xml文件:

<?xml version="1.0" encoding="UTF-8"?>    
<web-app     
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    
    xmlns="http://java.sun.com/xml/ns/javaee"     
    xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"    
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"    
    id="WebApp_ID"     
    version="3.0">    
    <context-param>    
        <param-name>contextConfigLocation</param-name>    
        <!-- 应用上下文配置文件 -->    
        <param-value>/WEB-INF/spring-servlet.xml</param-value>    
    </context-param>    
    <listener>    
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    
    </listener>    
    <!-- 配置spring核心servlet -->    
    <servlet>    
        <servlet-name>spring</servlet-name>    
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    
        <load-on-startup>1</load-on-startup>    
    </servlet>    
    <!-- url-pattern配置为/,不带文件后缀,会造成其它静态文件(js,css等)不能访问。如配为*.do,则不影响静态文件的访问 -->    
    <servlet-mapping>    
        <servlet-name>spring</servlet-name>    
        <url-pattern>*.do</url-pattern>    
    </servlet-mapping>    
</web-app>   

这里需要注意的是:

<span style="color:#ff9900;"><strong> <servlet-mapping>    
        <servlet-name>spring</servlet-name>    
        <url-pattern>*.do</url-pattern>    
      </servlet-mapping>  </strong></span>  

如果写成:

<span style="color:#ff9900;"><strong> <servlet-mapping>    
        <servlet-name>spring</servlet-name>    
        <url-pattern>/</url-pattern>    
    </servlet-mapping>  </strong></span>  

会提示:$ is not defined错误
记录一下

 

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