spring mvc 和ajax异步交互完整实例

时间：2021-07-01 08:03:29

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("")){

            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.</modelVersion>

    <groupId>xiaoma</groupId>

    <artifactId>zjl</artifactId>

    <packaging>war</packaging>

    <version>0.0.-SNAPSHOT</version>

    <name>zjl Maven Webapp</name>

    <url>http://maven.apache.org</url>

    <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>3.8.</version>

            <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-webmvc</artifactId>

            <version>4.1..RELEASE</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-web</artifactId>

            <version>4.1..RELEASE</version>

        </dependency>

        <dependency>

            <groupId>com.fasterxml.jackson.core</groupId>

            <artifactId>jackson-databind</artifactId>

            <version>2.5.</version>

        </dependency>

        <dependency>

            <groupId>commons-beanutils</groupId>

            <artifactId>commons-beanutils</artifactId>

            <version>1.9.</version>

        </dependency>

        <dependency>

            <groupId>org.codehaus.jackson</groupId>

            <artifactId>jackson-mapper-asl</artifactId>

            <version>1.9.</version>

        </dependency>  

        <dependency>

            <groupId>org.codehaus.jackson</groupId>

            <artifactId>jackson-core-asl</artifactId>

            <version>1.9.</version>

        </dependency>

    </dependencies>

    <build>

        <finalName>zjl</finalName>

        <plugins>

            <plugin>

                <groupId>org.mortbay.jetty</groupId>

                <artifactId>jetty-maven-plugin</artifactId>

                <configuration>

                    <stopPort></stopPort>

                    <stopKey>foo</stopKey>

                    <scanIntervalSeconds></scanIntervalSeconds>

                    <connectors>

                        <connector implementation="org.eclipse.jetty.server.nio.SelectChannelConnector">

                            <port></port>

                            <maxIdleTime></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></port>

                    <path>/</path>

                    <uriEncoding>UTF-</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></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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