POST方式发送http请求

/**

* 发送xml报文，调用接口

* 

* @param url 接口服务地址

* @param reqXml 请求报文

* @return

*/

public static String postByXml(String url, String reqXml){

System.out.println("reqXml==================\n" + reqXml);

try {

HttpURLConnection httpURLConnection = (HttpURLConnection) new URL(url).openConnection();              

httpURLConnection.setRequestProperty("content-type", "text/html");

httpURLConnection.setDoOutput(true);  

httpURLConnection.setDoInput(true);  

httpURLConnection.setRequestMethod("POST");   

httpURLConnection.setConnectTimeout(5000);  

httpURLConnection.setReadTimeout(5000);  

httpURLConnection.connect();  

BufferedWriter out = new BufferedWriter(new OutputStreamWriter(  

httpURLConnection.getOutputStream(), "UTF-8"));  

out.write(reqXml);  

out.flush();

 

int code = httpURLConnection.getResponseCode();   

if (code != 200) {   

System.out.println("ERROR===" + code);   

}

 

// 打印返回参数

InputStream in = httpURLConnection.getInputStream();

StringBuilder buffer = new StringBuilder();

BufferedReader reader=null;

try{

reader = new BufferedReader(new InputStreamReader(in));

String line=null;

while((line = reader.readLine())!=null){

buffer.append(line);

       }

}catch(Exception e){

e.printStackTrace();

}finally{

if(null!=reader){

try {

reader.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

System.out.println("resXml==================\n" + buffer.toString());

 

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (ProtocolException e) {

e.printStackTrace();

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}  

 

return null;

}