转:http://blog.youkuaiyun.com/zhujianli1314/article/details/43193183
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" οnclick="ajaxTest();"/>
- <div id="result"></div>
- </body>
- </html>

<%@ 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" οnclick="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;
- }
- }

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>

<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>
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>

<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>

<?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>

<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>

<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