package demo.httpclient;import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;import org.apache.http.HeaderIterator;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.CookieSpecs;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;public class HttpClientDemo {public static void main(String[] args) {   CloseableHttpClient httpclient = HttpClients.createDefault();HttpGet httpget = new HttpGet("http://www.soso.com");CloseableHttpResponse response = null;// 设置请求和传输超时时间5s,设置cookie策略RequestConfig requestconfig = RequestConfig.custom().setSocketTimeout(5000).setConnectTimeout(5000).setCookieSpec(CookieSpecs.BEST_MATCH).build();httpget.setConfig(requestconfig);System.out.println(httpget.getURI());// 打印请求信息System.out.println("Executing request " + httpget.getRequestLine());System.out.println("------------------------------");try {response = httpclient.execute(httpget);System.out.println(response.getStatusLine().toString());System.out.println("------------------------------");// 头信息HeaderIterator it = response.headerIterator();while(it.hasNext()) {System.out.println(it.next());}System.out.println("------------------------------");// 判断访问的状态码int statusCode = response.getStatusLine().getStatusCode();if(statusCode != HttpStatus.SC_OK) {System.err.println("Method failed: " + response.getStatusLine());}
//      if(statusCode == HttpStatus.SC_OK) {
//
//      } else if((statusCode == HttpStatus.SC_MOVED_TEMPORARILY)
//                  || (statusCode == HttpStatus.SC_MOVED_PERMANENTLY)
//                  || (statusCode == HttpStatus.SC_SEE_OTHER)
//                  || (statusCode == HttpStatus.SC_TEMPORARY_REDIRECT)) {
//          //页面重定向代码
//      }HttpEntity entity = response.getEntity();StringBuilder pageBuffer = new StringBuilder();if(entity != null) {InputStream in = entity.getContent();BufferedReader br = new BufferedReader(new InputStreamReader(in, "utf-8"));String line;while((line = br.readLine()) != null) {pageBuffer.append(line);pageBuffer.append("\n");}System.out.println(pageBuffer.toString());in.close();br.close();}System.out.println("------------------------------");HttpPost httpPost = new HttpPost("http://www.weibo.com");// 将要POST的数据封包List<NameValuePair> nvps = new ArrayList<NameValuePair>();nvps.add(new BasicNameValuePair("username", "vip"));nvps.add(new BasicNameValuePair("password", "123456"));httpPost.setEntity(new UrlEncodedFormEntity(nvps, "utf-8"));CloseableHttpResponse response1 = httpclient.execute(httpPost);try {HttpEntity entity1 = response1.getEntity();if(entity != null) {System.out.println(EntityUtils.toString(entity1,"UTF-8"));}EntityUtils.consume(entity1);} finally {response.close();}} catch(ClientProtocolException e) {e.printStackTrace();} catch(IOException e) {e.printStackTrace();} finally {try {response.close();httpclient.close();} catch(IOException e) {e.printStackTrace();}}}
}