DWR学习笔记

来源：互联网发布：挂号软件编辑：程序博客网时间：2024/05/16 17:52

一直看到dwr,项目框架中也用到这个东东，但是一直没时间，也太懒，没去搞到底是啥，呵呵呵！

最近闲下来，看看dwr到底是什么东西，一看原来是个很简单的东西，dwr是：Direct Web Remoting，其实就是个ajax框架！

看文库中的这个就可以完全看懂了！

http://wenku.baidu.com/link?url=maW3ggU-7LPv9t1_zd8lZ62caEFXoRU21TDTEwH8J2b3YgvIDCTTC4gLtZRrGYWtKN89fKQ3j6-wFMrhekU0K4lJXopROFQuegBqQ4eXyS3

这篇文章讲的也很详细

http://blog.csdn.net/zuxianghaung/article/details/7376247

dwr的signatures 下面这个文章讲的很详细

http://blog.csdn.net/geminiroy/article/details/5033758

我就把我的代码及一些心得记录下，上面的文章都讲的超级详细呵呵~

第一步创建个 web项目，然后将dwr.jar放到项目的lib下面

第二步配置web.xml 配置相应的servlet 添加下面的代码

<servlet>  <display-name>DWR Servlet</display-name>  <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>  <init-param>                <param-name>crossDomainSessionSecurity</param-name>                 <param-value>false</param-value>           </init-param>     </servlet><servlet-mapping>  <servlet-name>dwr-invoker</servlet-name>  <url-pattern>/dwr/*</url-pattern></servlet-mapping>

第三步创建个WEB-INF 下面创建个 dwr.xml 文件

<?xml version="1.0" encoding="UTF-8"?><!-- <!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 3.0//EN" "http://directwebremoting.org/schema/dwr30.dtd"> --><!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr/dwr20.dtd"><dwr><allow><create creator="new" javascript="JDate"><param name="class" value="java.util.Date" /></create><create creator="new" javascript="First"><param name="class" value="com.ausky.dwr.controller.First" /></create><convert match="com.ausky.dwr.convert.MyBean" converter="bean"></convert></allow><signatures> <![CDATA[ import java.util.List;import com.ausky.dwr.controller.First; import com.ausky.dwr.convert.MyBean;First.testBeans(List<MyBean>); ]]></signatures></dwr>

第四步创建相应的class文件

第五步启动服务

第六步访问 http://localhost:8080/dwr/

可以看到dwr配置了的 class

第七步创建页面

页面上需要用到的dwr的话通过第六步显示的 class 点进去可以看到类似下面这句话

Methods For: First (com.ausky.dwr.controller.First)To use this class in your javascript you will need the following script includes:  <script type='text/javascript' src='/dwr/interface/First.js'></script>  <script type='text/javascript' src='/dwr/engine.js'></script>

将上面2个js 加入到页面中就可以访问了

第八步就是具体的使用了我把代码贴出来

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"    pageEncoding="ISO-8859-1"%><!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=ISO-8859-1"><script src='dwr/interface/First.js'></script><script src='dwr/engine.js'></script><script src='/dwr/interface/JDate.js'></script><title>Insert title here</title><script type="text/javascript">/* First.test(function(str){alert(str);});JDate.getTime(function(str){alert(str);}); *//* First.testConvert(function(res){for(var key in res){alert("key:"+key+" val:"+res[key]);}}); *//* First.testConvert(convert);function convert(obj){for(var key in obj){alert("key:"+key+" val:"+obj[key]);}}var data = ["1","2","3","4"];First.testList(data,function(str){alert(str);}); */var dataBeans = [                 {name:"name1",address:"address1",age:11,sex:'m'},                 {name:"name1",address:"address1",age:11,sex:'m'},                 {name:"name1",address:"address1",age:11,sex:'m'},                 {name:"name1",address:"address1",age:11,sex:'m'}];First.testBeans(dataBeans,function(str){alert(str);});</script></head><body>11111111111111111111</body></html>

我把 src跟webroot目录打包了，需要的朋友可以下下来看看

（不知道怎么上传附件，只能放到资源里面了地址在下面）

mydwr

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