java如何调用http接口？

java如何调用http接口？

1、可以通过以下的方式读取到数据： Java代码 import java.net.*; import java.io.*; public class URLReader { public static void main(String[] args) throws Exception { URL yahoo = new

URL(\aram2=value2\ BufferedReader in = new BufferedReader( new

InputStreamReader( yahoo.openStream())); String inputLine; while ((inputLine = in.readLine()) != null) System.out.println(inputLine); in.close(); } } 2、然后用DOM4J的工具，来解析读取到的 xml格式的数据

URL url = null; HttpURLConnection httpurlconnection = null; try { url = new

URL(\ //以post方式请求 httpurlconnection = (HttpURLConnection) url.openConnection();

httpurlconnection.setDoOutput(true);

httpurlconnection.setRequestMethod(\ String username=\

httpurlconnection.getOutputStream().write(username.getBytes()); httpurlconnection.getOutputStream().flush(); httpurlconnection.getOutputStream().close(); //获取响应代码 int code =

httpurlconnection.getResponseCode();

System.out.println(\ \ //获取页面内容 java.io.InputStream in= httpurlconnection .getInputStream(); java.io.BufferedReader breader =new BufferedReader(new InputStreamReader(in , \str=breader.readLine());while(st !=

null){System.out.println(str);str=breader.readLine());} } catch(Exception e) { e.printStackTrace(); } finally { if(httpurlconnection!=null) httpurlconnection.disconnect(); }