httpclient的简单使用

1 package httpclient;
2
3 import java.io.File;
4 import java.io.FileInputStream;
5 import java.io.FileNotFoundException;
6 import java.io.IOException;
7 import java.io.InputStream;
8
9 import org.apache.commons.io.IOUtils;
10 import org.apache.http.HttpEntity;
11 import org.apache.http.HttpResponse;
12 import org.apache.http.ParseException;
13 import org.apache.http.client.ClientProtocolException;
14 import org.apache.http.client.HttpClient;
15 import org.apache.http.client.methods.HttpPost;
16 import org.apache.http.client.params.ClientPNames;
17 import org.apache.http.conn.ClientConnectionManagerFactory;
18 import org.apache.http.entity.ByteArrayEntity;
19 import org.apache.http.entity.ContentType;
20 import org.apache.http.impl.client.DefaultHttpClient;
21 import org.apache.http.impl.conn.PoolingClientConnectionManager;
22 import org.apache.http.params.BasicHttpParams;
23 import org.apache.http.params.CoreConnectionPNames;
24 import org.apache.http.params.HttpParams;
25 import org.apache.http.util.EntityUtils;
26
27 /**
28  *
29  * <P>对httpclient-4.2.3.jar的简单使用</P>
30  * @ClassName: HttpClientTest
31  * @author 冯浩  2017年1月22日 下午2:48:43
32  * @see TODO
33  */
34 public class HttpClientTest {
35
36     @org.junit.Test
37     public void Test() throws IOException{
38         long start=System.currentTimeMillis();
39         HttpParams params=new BasicHttpParams();
40         Integer CONNECTION_TIMEOUT=2*1000;//请求超时-
41         Integer SO_TIMEOUT=2*1000;//等待数据超时
42         long CONN_MANAGER_TIMEOUT=500L;//连接不够时，等待超时时间
43         params.setIntParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, CONNECTION_TIMEOUT);
44         params.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, SO_TIMEOUT);
45         params.setLongParameter(ClientPNames.CONN_MANAGER_TIMEOUT, CONN_MANAGER_TIMEOUT);
46         //提交之前进行连接测试
47         params.setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, true);
48
49         PoolingClientConnectionManager manager=new PoolingClientConnectionManager();
50         manager.setMaxTotal(200);//连接池的最大连接数-pool的大小
51         manager.setDefaultMaxPerRoute(manager.getMaxTotal());//根据链接到的主机对池子大小进行细分
52         HttpClient client=new DefaultHttpClient(manager,params);
53
54         String url="http://******:8080/com.*************/****/*****";
55         HttpPost post=new HttpPost(url);
56         HttpResponse response=null;
57         InputStream is=new FileInputStream(new File("D:/axtmp/20160815_120436-491.xml"));
58
59         HttpEntity en=new ByteArrayEntity(IOUtils.toByteArray(is),ContentType.TEXT_XML);
60         post.setEntity(en);
61         try {
62              response = client.execute(post);
63         } catch (ClientProtocolException e) {
64             e.printStackTrace();
65         } catch (IOException e) {
66             e.printStackTrace();
67         }
68         HttpEntity entity = response.getEntity();
69         try {
70             String result = EntityUtils.toString(entity, "utf-8");
71             long end=System.currentTimeMillis();
72             System.out.println("\nresult is "+result);
73             System.out.println("\nprocess is "+(end-start)+" mills");
74         } catch (ParseException e) {
75             e.printStackTrace();
76         } catch (IOException e) {
77             e.printStackTrace();
78         }
79     }
80
81 }