Question

我用Eclipse创建一个DWR项目。代码如下：

import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Properties;
import java.util.Vector;
public class AJAXtest {

    public AJAXtest()
    {}

    public List<String> getMenuItems () throws IOException
    {
        List<String> menuItems=new Vector<String>();
        InputStream is=this.getClass().getClassLoader().getResourceAsStream("dwrapplication.properties");
        Properties appProps=new Properties();
        appProps.load(is);
        is.close();
        for (int menucount=1;true;menucount++)
        {
            String menuItem=appProps.getProperty("menu."+menucount);
            if (menuItem==null)
            {
                break;
            }
            menuItems.add(menuItem);
        }
        return menuItems;
    }

    public String SayHello (String data)
    {
        return "Hello:"+data;
    }

}

在eclipse中开始运行后，我可以访问页面http://localhost:8080/TestAJAX/dwr/index.html，其中显示了SayHello方法。但是当我创建一个客户端html文件并使用IE打开它时，它显示错误消息“访问被拒绝”。以下是html的源文件

<!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">
<link href="styles.css" rel="stylesheet" type="text/css"/>

<script type='text/javascript' src='http://localhost:8080/TestAJAX/dwr/engine.js'></script>

<script type='text/javascript' src='http://localhost:8080/TestAJAX/dwr/interface/AJAXtest.js'></script>
<script type='text/javascript' src='http://localhost:8080/TestAJAX/dwr/util.js'></script>
 <title>DWR samples</title>
<script type="text/javascript">

    var sayHello = function(){

            return AJAXtest.SayHello("Rongbo_J",callBack);
        }

    var callBack = function(data)
    {
        alert(data);
    }
</script>
</head>
<body >
<h1>DWR Easy Java Ajax Applications1</h1>
<button id="button1" type="button" onclick="sayHello()">Click Me!</button>
</body>
</html>

有人可以帮忙吗？我尝试对其进行调试，发现在engine.js中的以下位置发生了错误

try {
          batch.req.open(httpMethod, request.url, batch.async);
          try {
            for (var prop in batch.headers) {
              var value = batch.headers[prop];
              if (typeof value == "string") {
                batch.req.setRequestHeader(prop, value);
              }
            }
            if (!batch.headers["Content-Type"]) {
              batch.req.setRequestHeader("Content-Type", "text/plain");
            }
          }
          catch (ex) {
            dwr.engine._handleWarning(batch, ex);
          }

通过在本地服务器上导入js创建客户端html页面，并显示拒绝访问错误

0 个答案: