httpClient解决post请求重定向的问题

 1 import com.dadi.saas.util.HTTPUtils;
 2 import org.apache.commons.httpclient.Header;
 3 import org.apache.commons.httpclient.HttpClient;
 4 import org.apache.commons.httpclient.HttpStatus;
 5 import org.apache.commons.httpclient.NameValuePair;
 6 import org.apache.commons.httpclient.methods.PostMethod;
 7 
 8 import java.io.IOException;
 9 import java.util.HashMap;
10 import java.util.Iterator;
11 import java.util.Map;
12 
13 
14 /**
15  * @author wdsy
16  * @date 2017-06-21
17  */
18 
19 public class HttpClientTest {
20 
21     public String getPostResponse(String url,  Map<String, String> parmMap ) throws IOException {
22         {
23             String result = "";
24             PostMethod post = new PostMethod(url);
25             HttpClient client = new HttpClient();
26             Iterator it = parmMap.entrySet().iterator();
27             NameValuePair[] param = new NameValuePair[parmMap.size()];
28             int i = 0;
29             while (it.hasNext()) {
30                 Map.Entry parmEntry = (Map.Entry) it.next();
31                 param[i++] = new NameValuePair((String) parmEntry.getKey(), (String) parmEntry.getValue());
32             }
33 
34 
35             post.setRequestBody(param);
36             try {
37                 int statusCode = client.executeMethod(post);
38 
39                 if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY || statusCode == HttpStatus.SC_MOVED_TEMPORARILY) {
40                     Header locationHeader = post.getResponseHeader("location");
41                     String location = "";
42                     if (locationHeader != null) {
43                         location = locationHeader.getValue();
44                         result = this.getPostResponse(location, parmMap);//用跳转后的页面重新请求�??
45                     }
46                 } else if (statusCode == HttpStatus.SC_OK) {
47                     result = post.getResponseBodyAsString();
48                 }
49             } catch (IOException ex) {
50             } finally {
51                 post.releaseConnection();
52             }
53             return result;
54         }
55     }
56 
57     public static void main(String[] args) throws IOException {
58         Map<String, String> map = new HashMap<String, String>();
59         map.put("param1", "xxxx");
60         map.put("param2", "xxxxx");
61         map.put("param3", "xxxxx");
62         Iterator it = map.entrySet().iterator();
63         NameValuePair[] param = new NameValuePair[map.size()];
64         int i = 0;
65         String z =new HttpClientTest().getPostResponse("http://xxxx.xx.xx.xx:xxxx/xx/xx/xx.do?", map);
66  System.out.println(z);
67  } 
68 }

pom：

 <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpasyncclient</artifactId>
            <version>4.0</version>
        </dependency>
        <dependency>
            <groupId>commons-httpclient</groupId>
            <artifactId>commons-httpclient</artifactId>
            <version>3.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.3.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpmime</artifactId>
            <version>4.3.1</version>
        </dependency>
        <dependency>
            <groupId>commons-configuration</groupId>
            <artifactId>commons-configuration</artifactId>
            <version>1.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.8-beta5</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.8</version>
        </dependency>

posted on 2017-06-27 14:20 周卫东阅读(10134) 评论(0) 编辑收藏举报