dwr之前后台bean传递（需要制定bean转换器）-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_16498/article/details/82573623

dwr可以对普通的类型自动的进行前后天转换，如果对于像bean这样的类型则需要制定特殊的转换器，下面的例子实现前台向后台传递一个bean对象，后台打印出来后并传回前台显示。

1，前后台传递的bean java类文件

package com.dwr.bean;
public class Address {
	private String name;
	private String info;
	private String remark;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getInfo() {
		return info;
	}
	public void setInfo(String info) {
		this.info = info;
	}
	public String getRemark() {
		return remark;
	}
	public void setRemark(String remark) {
		this.remark = remark;
	}
}

2，web.xml文件配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <display-name></display-name>	
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  	<servlet>
		<servlet-name>dwr-invoker</servlet-name>
		<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
		<init-param>
			<param-name>debug</param-name>
			<param-value>true</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>dwr-invoker</servlet-name>
		<url-pattern>/dwr/*</url-pattern>
	</servlet-mapping>
</web-app>

3，dwr.xml文件的配置

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 
2.0//EN" "http://www.getahead.ltd.uk/dwr/dwr20.dtd">
<dwr>
	<allow>
		<create creator="new" javascript="service">
			<param name="class" value="com.dwr.action.Person" />
			<include method="getPersonName3"/>
		</create>
		<!-- 特别注意下面转换器的使用 -->
		<convert match="com.dwr.bean.Address" converter="bean">
	          <param name="include" value="name,info,remark"></param>           	
		</convert>
	</allow>
</dwr>

4，后台处理Action

package com.dwr.action;
import com.dwr.bean.Address;
public class Person {
	private Address address;
	public Address getPersonName3(Address address)
	{
	   Address myaddress = address;
       System.out.println(address.getName());
       System.out.println(address.getInfo());
       System.out.println(address.getRemark());
		return myaddress;
	}
	public Address getAddress() {
		return address;
	}
	public void setAddress(Address address) {
		System.out.println("beiai");
		this.address = address;
	}
}

5，前台页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<script type='text/javascript' src='dwr/interface/service.js'></script>
<script type='text/javascript' src='dwr/engine.js'></script>
<script type='text/javascript' src='dwr/util.js'></script>
<script type="text/javascript">
       function getMyname()
       {
    	   //定义一个向后台传递的JavaScript bean模型
    	   var address = {name:"中国",info:"12yirenkou0",remark:"很好的一个国家"};
    	   service.getPersonName3(address,myCallBack);
       }
       function myCallBack(data)
       {
    	   //把后台传递回来的对象打印到控制台（该语句只能在ff上使用）
    	  console.log(data);
       }
    </script>
</head>
<body>
	<br>
	<input type="text">
	<input type="button" value="获取服务器上的名字" onclick="getMyname()">
</body>
</html>