java HttpConnection 调用.NET WebService

最近项目上要求调用异地的WebService，以前有写过xfire WebService，就按照原先的写了，发现掉不同，后来发现对面写的WebServcie是使用.NET语言写的，且传输的是对象，愁了三天，相继使用了XFIRE，以及CXF，AXIS调用，都不行，各种错误。后来就想使用基础的，java自带的HttpConnection提交其XML数据，后来开始也是掉不同，出现错误如下:

java.io.IOException: Server returned HTTP response code: 500 for URL:

 

 

 后来从网上找原因都说是要求增加如下代码:

connectioin.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");

试了不行，后来辗转多地，找到如下方法，试了，可以

 

con.setRequestProperty("SOAPAction", "相应的soapaction");、

源代码如下:

/**
	 * 以post的方式模拟HTTP
	 * @param urlStr
	 * @param paras
	 * @return
	 */
	public String httpPost(String urlStr, String paras) {
		byte[] data = paras.getBytes();
		URL url = null;
		HttpURLConnection con = null;
		InputStream input = null;
		String response = null;
		try {
			url = new URL(urlStr);
			con = (HttpURLConnection)url.openConnection();
			con.setConnectTimeout(1000 * 6);
			//Server returned HTTP response code: 500 for URL:错误解决方案
			con.setRequestProperty("SOAPAction", "http://tempuri.org/IInsureBill/Submit");
			
			con.setDoInput(true);
			con.setDoOutput(true);
			//如果为 true，则只要有条件就允许协议使用缓存
			con.setUseCaches(false);
			con.setRequestMethod("POST");
			con.setRequestProperty("Connection", "Keep-Alive");
			con.setRequestProperty("Charset", "UTF-8");
			con.setRequestProperty("Content-Length", String.valueOf(data.length));
			con.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
			con.connect();
			DataOutputStream outputStream = new DataOutputStream(con.getOutputStream());
			outputStream.write(data);
			outputStream.flush();
			outputStream.close();
			int responseCode = con.getResponseCode();
			if(responseCode == 200) {
				input = con.getInputStream();
				response = getResponse(input);
			}else {
				input = con.getInputStream();
				response = getResponse(input);
				System.out.println(response);
				response = "返回码为:"+responseCode;
			}
		}catch(Exception e) {
			e.printStackTrace();
		}finally {
			con.disconnect();
		}
		return response;
	}