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dwr_实现无刷新获取数据


web.xml 配置:

<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>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>dwr-invoker</servlet-name>
  <url-pattern>/dwr/*</url-pattern>
</servlet-mapping>

 

dwr.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr/dwr20.dtd">
<dwr>
 <allow>
  <create creator="new" javascript="FirstDWR">
   <param name="class" value="com.zte.gateway.web.am.action.FirstDWR" />
  </create>  
  <convert match="com.zte.gateway.web.am.action.StringOBJ" javascript="StringOBJ"
   converter="bean" />
 </allow>
</dwr>

 

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>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script type="text/javascript" src="<%=request.getContextPath() %>/dwr/engine.js"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/dwr/util.js"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/dwr/interface/FirstDWR.js"></script>
<script type="text/javascript">
function goshow(){
     FirstDWR.returnStrs("aaa", getResult);
}
var cellFuncs = [ function(StringOBJ) { return StringOBJ.str; }];
function getResult(result){
 dwr.util.setEscapeHtml(false);
 var options = {
  cellCreator:function(options){
   var td = document.createElement("td");
   return td;
  }
 };
 dwr.util.addRows("pattern", result, cellFuncs, options);
}
//定时执行
//setInterval("goshow()",1000);  
</script>
<title>Insert title here</title>
</head>
<body>
    <input type="button" οnclick="goshow()" value="查  询"/>
      <table class="tdata w_4">
         <thead><tr><th>值</th></tr></thead>
         <tbody id="pattern"/>
        <tfoot><tr><td colspan="4" class="tright"></td></tr></tfoot>
     </table>
</body>
</html>

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