spring集成dwr

#项目结构图

##pom.xml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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.test</groupId>
    <artifactId>all_parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>spring-dwr</artifactId>
  <packaging>war</packaging>
  
  <properties>
  	<springversion>4.3.7.RELEASE</springversion>  
  </properties>
  
  <dependencies>
     <dependency>  
           <groupId>org.springframework</groupId>  
           <artifactId>spring-websocket</artifactId>  
            <version>${springversion}</version>  
       </dependency> 
        
       <dependency>  
           <groupId>org.springframework</groupId>  
           <artifactId>spring-messaging</artifactId>  
       </dependency> 

		<dependency>
		    <groupId>org.springframework</groupId>
		    <artifactId>spring-aop</artifactId>
		</dependency>
  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-aspects</artifactId>  
        </dependency> 
        
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-beans</artifactId>  
        </dependency>  
        
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-context</artifactId>  
            <type>jar</type>  
        </dependency>  
        
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-context-support</artifactId>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-core</artifactId>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-expression</artifactId>  
             <version>${springversion}</version>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-jdbc</artifactId>  
        </dependency>  
      
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-orm</artifactId>  
        </dependency>  
        
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-tx</artifactId>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-web</artifactId>  
        </dependency>  
        <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-webmvc</artifactId>  
        </dependency>  
       <dependency>
		    <groupId>org.directwebremoting</groupId>
		    <artifactId>dwr</artifactId>
		    <version>3.0.2-RELEASE</version>
		</dependency>
  </dependencies>
</project>

##web.xml配置

<?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"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	id="WebApp_ID" version="2.5">
	<display-name>QIQIIM-SERVER</display-name>

	<!-- servlet控制跳转 -->
	<servlet>
		<servlet-name>spring</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- 配置文件 -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:springmvc.xml</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>spring</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	
     <servlet-mapping>    
      <servlet-name>spring</servlet-name>    
      <url-pattern>/dwr/*</url-pattern>    
    </servlet-mapping>  
</web-app>

##springmvc.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<beans default-lazy-init="true"
	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" xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"
	xsi:schemaLocation="  
       http://www.springframework.org/schema/beans   
       http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
       http://www.springframework.org/schema/mvc   
       http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd  
       http://www.directwebremoting.org/schema/spring-dwr   
    http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd  
       http://www.springframework.org/schema/context  
       http://www.springframework.org/schema/context/spring-context-3.0.xsd">

	<!-- 使用注解的包，包括子集 -->
	<context:component-scan base-package="com.test" />
	<!-- 通过注解，把URL映射到Controller上，该标签默认注册DefaultAnnotationHandlerMapping和AnnotationMethodHandlerAdapter -->
	<mvc:annotation-driven />
	 

    <!-- 注意这里新增加的dwr tag, 为使其生效，文件头中要声明namespace --> 
    <dwr:configuration />
	<!-- 要求dwr在spring容器中检查拥有@RemoteProxy 和 @RemoteMethod注解的类。注意它不会去检查Spring容器之外的类。 -->
	<dwr:annotation-config/>
	<!-- 指定dwr所调用的后台方法的路径 -->
    <dwr:annotation-scan base-package="com.test" />
	<!-- 要求DWR将test.js和engine.js映射到dwrController -->
	<dwr:url-mapping />
	<!-- 定义dwrController 部署项目时, 请把debug设为false --> 
	<dwr:controller id="test" debug="true">
		<dwr:config-param name="allowScriptTagRemoting"	value="true" />
	    <!-- 如果允许跨域请求，则必须将此值设置为false，默认值为true -->
		<dwr:config-param name="crossDomainSessionSecurity"	value="false" />
	</dwr:controller>
</beans> 

##controllr代码

package com.test;

import org.directwebremoting.annotations.RemoteMethod;
import org.directwebremoting.annotations.RemoteProxy;
import org.springframework.stereotype.Controller;

@Controller
@RemoteProxy(name = "test")
public class TestController {
	@RemoteMethod
	public String sayHello(String name) {
		System.out.println("hello " + name);
		return "hello: " + name;
	}
}
 

##index.jsp调用示例

<%@ 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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
<script src="<%=request.getContextPath()%>/dwr/engine.js"></script>
<script src="<%=request.getContextPath()%>/dwr/interface/test.js"></script>
</head>
<body>
	<script type="text/javascript">
test.sayHello("小丽",function(data){
	alert(data);  
	});
</script>
</body>
</html>

##访问：http://127.0.0.1:8080/spring-dwr/
如果出现以下现象即为配置成功：

项目的git地址：https://gitee.com/jingyang3877/all-examples/blob/master/jingyang3877-springboot-dwr-master.zip

参考博客：
https://www.cnblogs.com/tianmengwei/p/5084702.html
https://blog.youkuaiyun.com/geloin/article/details/7537148
###另外有springboot集成dwr的，套路大致类似，不再多说，直接上git地址：
项目git地址：https://gitee.com/jingyang3877/springboot-dwr
参考博客：https://blog.youkuaiyun.com/melody_susan/article/details/78659696