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到此处可以去下载依赖包:http://hc.apache.org/downloads.cgi
1 import java.util.List;
2
3 import org.apache.http.HttpStatus;
4 import org.apache.http.NameValuePair;
5 import org.apache.http.client.config.RequestConfig;
6 import org.apache.http.client.entity.UrlEncodedFormEntity;
7 import org.apache.http.client.methods.CloseableHttpResponse;
8 import org.apache.http.client.methods.HttpGet;
9 import org.apache.http.client.methods.HttpPost;
10 import org.apache.http.impl.client.CloseableHttpClient;
11 import org.apache.http.impl.client.HttpClients;
12 import org.apache.http.util.EntityUtils;
13
14 /**
15 * HttpServletUtil
16 *
17 * @author ysj
18 * @Date: 2015-1-30 下午2:07:55
19 */
20 public class HttpServletUtil {
21 private static CloseableHttpClient httpclient;
22 private static RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(5000).setConnectTimeout(5000).build();
23
24 /**
25 * Post:访问数据库并返回数据字符串
26 *
27 * @param params
28 * 向服务器端传的参数
29 * @param url
30 * @return String 数据字符串
31 * @throws Exception
32 */
33 public static String doPost(List params, String url) throws Exception {
34 String result = null;
35 httpclient = HttpClients.createDefault();
36 HttpPost httpPost = new HttpPost(url);
37 httpPost.setEntity(new UrlEncodedFormEntity(params));
38 //设置请求和传输超时时间
39 httpPost.setConfig(requestConfig);
40 CloseableHttpResponse httpResp = httpclient.execute(httpPost);
41 try {
42 int statusCode = httpResp.getStatusLine().getStatusCode();
43 // 判断是够请求成功
44 if (statusCode == HttpStatus.SC_OK) {
45 System.out.println("状态码:" + statusCode);
46 System.out.println("请求成功!");
47 // 获取返回的数据
48 result = EntityUtils.toString(httpResp.getEntity(), "UTF-8");
49 } else {
50 System.out.println("状态码:"
51 + httpResp.getStatusLine().getStatusCode());
52 System.out.println("HttpPost方式请求失败!");
53 }
54 } finally {
55 httpResp.close();
56 httpclient.close();
57 }
58 return result;
59 }
60
61 /**
62 * Get:访问数据库并返回数据字符串
63 *
64 * @param url
65 * @return String 数据字符串
66 * @throws Exception
67 */
68 public static String doGet(String url) throws Exception{
69 String result = null;
70 httpclient = HttpClients.createDefault();
71 HttpGet httpGet = new HttpGet(url);
72 //设置请求和传输超时时间
73 httpGet.setConfig(requestConfig);
74 CloseableHttpResponse httpResp = httpclient.execute(httpGet);
75 try {
76 int statusCode = httpResp.getStatusLine().getStatusCode();
77 // 判断是够请求成功
78 if (statusCode == HttpStatus.SC_OK) {
79 System.out.println("状态码:" + statusCode);
80 System.out.println("请求成功!");
81 // 获取返回的数据
82 result = EntityUtils.toString(httpResp.getEntity(), "UTF-8");
83 } else {
84 System.out.println("状态码:"
85 + httpResp.getStatusLine().getStatusCode());
86 System.out.println("HttpGet方式请求失败!");
87 }
88 } finally {
89 httpResp.close();
90 httpclient.close();
91 }
92 return result;
93 }
94 } |
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