警惕 JS 方法名的规范性 -- 记 dwr 入门 - Hello world

来源：互联网发布：广联达认证网络大赛编辑：程序博客网时间：2024/05/17 12:48

郁闷了一下午的问题

调试模式可以成功调用 java 方法，但是在页面中却无法运行

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package com.service;

public class HelloService {

public String sayHello(String str){
return "Hello World"+str;
}
}

================================

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<servlet>
  <servlet-name>dwr-invoke</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-invoke</servlet-name>
  <url-pattern>/dwr/*</url-pattern>
</servlet-mapping>

</web-app>

<?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>

</dwr>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

// 由于 hs 方法名与 hs 对象重复，导致冲突而无法访问 sayHello 方法
function hs(){ // 将hs 方法名改一下就OK

   alert("");
   hs.sayHello("cccccc",abc);
   alert("xxxx");
  }
  function abc(data){
   alert(data);
  }
</script>
</head>

<body>
    <input onclick="hs();" value="dddd" type="button">
</body>
</html>

警惕 JS 方法名 的规范性 -- 记 dwr 入门 - Hello world

警惕 JS 方法名的规范性 -- 记 dwr 入门 - Hello world