url能正常打开，报错Server returned HTTP response code: 400 for URL:
解决代码如下：
/** * 发送 WebService 请求 * @param content 请求内容 * @param wsdlUrl 请求地址 * @param soapAction 请求方法 * @return */ public static String postToWebservice(String content, String wsdlUrl, String soapAction){ OutputStreamWriter out = null; BufferedReader in = null; String result = ""; try { URL realUrl = new URL(wsdlUrl); // 打开和URL之间的连接 HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection(); // 设置通用的请求属性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); conn.setRequestProperty("Content-Type", "text/xml; charset=utf-8"); conn.setRequestProperty("SOAPAction", soapAction); // 发送POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); // 获取URLConnection对象对应的输出流 // out = new PrintWriter(conn.getOutputStream()); out = new OutputStreamWriter(conn.getOutputStream(), "utf-8"); // 8859_1 out.write(content); // post的关键所在 // 发送请求参数 // out.print(param); // flush输出流的缓冲 out.flush(); // 定义BufferedReader输入流来读取URL的响应 int code = conn.getResponseCode(); if(code == 200) { in = new BufferedReader(new InputStreamReader(conn.getInputStream())); }else{ in = new BufferedReader(new InputStreamReader(conn.getErrorStream())); } String line; while ((line = in.readLine()) != null) { result += line; } }catch (MalformedURLException e) { LogFactory.info("exception MalformedURLException: "+e.getMessage(), TAG); e.printStackTrace(); } catch (ProtocolException e) { LogFactory.info("exception ProtocolException: "+e.getMessage(), TAG); e.printStackTrace(); } catch (IOException e) { LogFactory.info("exception IOException: "+e.getMessage(), TAG); e.printStackTrace(); } // 使用finally块来关闭输出流、输入流 finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { ex.printStackTrace(); } } return result; }