dwr操作使用
5586 ワード
DWR(Direct Web Remoting) WEB . AJAX . DWR JavaScript Java JavaScript (DWR Java JavaScrip ). DWR0.6 : Dom Trees , Spring(JavaScript spring bean), , commons-logging . ：
1. dwr.jar
http://directwebremoting.org/dwr/downloads/index.html
： servlet
<servlet>
<servlet-name>dwrinvoker</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<!-- （ ， url：http://ip: / /dwr/index.html
） -->
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
</servlet>
<!-- -->
<servlet-mapping>
<servlet-name>dwrinvoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
：
package com.chni.dwr;
public class FirstDWR {
/**
* js
* @param uname
* @return
*/
public String getTime(String uname){
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
return uname+" : ："+System.currentTimeMillis();
}
}
： WEB-INF dwr.xml
<!-- dwr.xml -->
<!DOCTYPE dwr PUBLIC
"-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN"
"http://getahead.org/dwr/dwr20.dtd">
<dwr>
<allow>
<!-- javascript creator scope
page/request/session/application/script
creator: ： new 、none、spring
-->
<create javascript="FirstDWR" creator="new" scope="request" >
<!-- -->
<param name="class" value="com.chni.dwr.FirstDWR"/>
<!--
<exclude method="getTime"/>
<include method=""/>
<filter class=""></filter>
<auth role="" method=""/> J2EE
-->
</create>
<!-- bean ， com.pojos Bean （ com.chni.* com.chni ） -->
<!--
<convert match=" " converter=""></convert>
-->
</allow>
</dwr>
：
<title> dwr </title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!-- FirstDWR.js DWR -->
<script type='text/javascript' src='/dwr/dwr/interface/FirstDWR.js'></script>
<!-- DWR ， DWR -->
<script type='text/javascript' src='/dwr/dwr/engine.js'></script>
<!-- dwr.util.js js -->
<script type='text/javascript' src='/dwr/dwr/util.js'></script>
<script type="text/javascript">
// java
function javaMethod(){
//
var varStr=document.getElementById("name").value;
/*
dwr
var varStr=dwr.util.getValue("userName");
*/
/* java ,
sampleXMLHttpReq.onreadystatechange = processResponse;，
*/
//
document.getElementById("none").style.display="inline";
FirstDWR.getTime(varStr,function(data){
if(data!=""){
document.getElementById("none").style.display="none";
}
document.getElementById("vardata").value=data;
});
}
//
function clare(){
document.getElementById("name").value='';
document.getElementById("vardata").value='';
}
</script>
</head>
<body>
<pre>
：
<input type="text" name="userName" id="name" onchange="javaMethod()"/>
<br> ：
<textarea cols="50" rows="5" name="serverReplay" id="vardata"></textarea>
<input type="button" value=" " onclick="clare()">
</pre>
<div align="center" id="none" style="display: none"><img src="images/load.gif"/></div>
</body>
</html>