FLEX跨域远程访问

?? 整这个玩意，整了好久，原因：策略文件必须放在远程服务器的根目录下。像网上说的在flex的主应用中写入 Security.loadPolicyFile("http:// localhost:8080/direc/crossdomain.xml");来设置访问的路径，，?? 我勒个去，，完全是忽悠人的，，? 整了咱一早上，，好吧，下午在官网上硬着头皮看着英文发现了一句话，原话就不写了，大概意思 :flex始终会在对方服务器上的根目录来查找主策略文件，用Security.loadPolicyFile只是用来找到从策略文件。

? 好吧那就把策略文件丢在服务器的根目录上呗，，结果在强大的ESB/MULE中， 端口号又是一个大问题，，有待研究，，，结果没办法，只能折中一下，用java了·······

?? 废话说了一大堆，上代码：

java端:

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package?com.zjht.call;?
  
  
?
  
  
import?java.io.BufferedInputStream;?
  
  
import?java.io.PrintWriter;?
  
  
import?java.net.HttpURLConnection;?
  
  
import?java.net.SocketTimeoutException;?
  
  
import?java.net.URL;?
  
  
?
  
  
import?javax.servlet.http.HttpServletRequest;?
  
  
import?javax.servlet.http.HttpServletResponse;?
  
  
?
  
  
import?org.apache.log4j.Logger;?
  
  
import?org.springframework.stereotype.Controller;?
  
  
import?org.springframework.web.bind.annotation.RequestMapping;?
  
  
import?org.springframework.web.bind.annotation.RequestMethod;?
  
  
?
  
  
import?com.zjht.hrm.action.AttachmentDownloadAction;?
  
  
?
  
  
@Controller?
  
  
public?class?CrossdomainAction?{?
  
  
????private?static?Logger?log?=?Logger.getLogger(AttachmentDownloadAction.class.getClass());?
  
  
?????
  
  
????@RequestMapping(value?=?"crossdomain",?method?=?{?RequestMethod.POST,?RequestMethod.GET?})?
  
  
????public?void?crossdomain(String?url,?final?HttpServletRequest?request,?final?HttpServletResponse?response)?throws?Exception?{?
  
  
????????response.setCharacterEncoding("UTF-8");?
  
  
????????response.setContentType("text/xml");?
  
  
? PrintWriter?out?=?response.getWriter();?
  
  
????????try?{?
  
  
????????????out.println(details);?
  
  
????????}?catch?(Exception?e)?{?
  
  
????????????log.error("response.sendError?Exception:",e);?
  
  
????????????throw?new?Exception("数据加载失败请联系研发部:"?+?e.getMessage());?
  
  
????????}finally{?
  
  
????????????out.flush();?
  
  
????????????out.close();?
  
  
????????}?
  
  
?
  
  
????}?
  
  
?
  
  
????public?String?GetRemoteDetails(String?urlStr)?throws?Exception?{?
  
  
????????String?s?=?"";?
  
  
????????StringBuffer?sb=new?StringBuffer();?
  
  
????????try?{?
  
  
????????????URL?url?=?new?URL(urlStr);?
  
  
????????????HttpURLConnection?connection?=?(HttpURLConnection)?url.openConnection();?
  
  
????????????connection.setConnectTimeout(30000);?
  
  
????????????connection.setReadTimeout(30000);?
  
  
????????????connection.connect();?
  
  
????????????BufferedInputStream?bis?=?new?BufferedInputStream(connection.getInputStream());?
  
  
????????????int?c;?
  
  
????????????while?((c?=?bis.read())?!=?-1)?{?
  
  
????????????????sb.append((char)c);?
  
  
????????????}?
  
  
????????????s=?new?String(sb.toString().getBytes("iso8859-1"),?"utf-8");?
  
  
????????}catch?(SocketTimeoutException?e)??
  
  
????????{?
  
  
????????????log.error("连接超时:",e);?
  
  
????????????throw?new?Exception("连接超时请联系研发部:"?+?e.getMessage());?
  
  
????????}catch?(Exception?e)?{?
  
  
????????????log.error("数据加载失败:",e);?
  
  
????????????throw?new?Exception("数据加载失败请联系研发部:"?+?e.getMessage());?
  
  
????????}?
  
  
????????return?s;?
  
  
????}?
  
  
?????
  
  
}?
 
 

Flex端：

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<s:HTTPService?id="loader"?url="/ChinaExpress/crossdomain.do"??resultFormat="e4x"??method="GET"?useProxy="false"/>?
  
  
?
  
  
????loader.addEventListener(ResultEvent.RESULT,ticketInfoList);?
  
  
????????????????params?=?new?URLVariables();?
  
  
?
  
  
params.url="URL"?
  
  
loader.send(params);?