Apache HttpComponents 获取inputStream

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import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; * This example demonstrates the recommended way of using API to make sure * the underlying connection gets released back to the connection manager. public class ClientConnectionRelease { public final static void main(String[] args) throws Exception { HttpClient httpclient = new DefaultHttpClient(); try { HttpGet httpget = new HttpGet("http://www.apache.org/" ); // Execute HTTP request System.out.println("executing request " + httpget.getURI()); HttpResponse response = httpclient.execute(httpget); System.out.println( "----------------------------------------" ); System.out.println(response.getStatusLine()); System.out.println( "----------------------------------------" ); // Get hold of the response entity HttpEntity entity = response.getEntity(); // If the response does not enclose an entity, there is no need // to bother about connection release if (entity != null ) { InputStream instream = entity.getContent(); try { instream.read(); // do something useful with the response } catch (IOException ex) { // In case of an IOException the connection will be released // back to the connection manager automatically throw ex; } catch (RuntimeException ex) { // In case of an unexpected exception you may want to abort // the HTTP request in order to shut down the underlying // connection immediately. httpget.abort(); throw ex; } finally { // Closing the input stream will trigger connection release try { instream.close(); } catch (Exception ignore) {} } finally { // When HttpClient instance is no longer needed, // shut down the connection manager to ensure // immediate deallocation of all system resources httpclient.getConnectionManager().shutdown();

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