http put/delete方式请求

HttpClient使用Delete方式提交数据

1. http请求主要有以下几种方法来对指定资源做不同操作:

 1 HTTP/1.1协议中共定义了八种方法(有时也叫“动作”)来表明Request-URI指定的资源的不同操作方式:
 2 . OPTIONS - 返回服务器针对特定资源所支持的HTTP请求方法。
 3                    也可以利用向Web服务器发送'*'的请求来测试服务器的功能性。
 4 . HEAD    - 向服务器索要与GET请求相一致的响应,只不过响应体将不会被返回。
 5                 这一方法可以在不必传输整个响应内容的情况下,就可以获取包含在响应消息头中的元信息。
 6 . GET     - 向特定的资源发出请求。
 7                 注意:GET方法不应当被用于产生“副作用”的操作中,例如在web app.中。
 8                 其中一个原因是GET可能会被网络蜘蛛等随意访问。
 9 . POST    - 向指定资源提交数据进行处理请求(例如提交表单或者上传文件)。
10                 数据被包含在请求体中。POST请求可能会导致新的资源的建立和/或已有资源的修改。
11 . PUT     - 向指定资源位置上传其最新内容。
12 . DELETE  - 请求服务器删除Request-URI所标识的资源。
13 . TRACE   - 回显服务器收到的请求,主要用于测试或诊断。
14 . CONNECT - HTTP/1.1协议中预留给能够将连接改为管道方式的代理服务器。


2.HttpDelete的方法中本身并没有setEntity方法,参考HttpPost的setEntity方法,自定义一个HttpDeleteWithBody类

 1 import java.net.URI;
 2  
 3 import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
 4  
 5 public class HttpDeleteWithBody extends HttpEntityEnclosingRequestBase{
 6     public static final String METHOD_NAME = "DELETE";
 7  
 8     /**
 9      * 获取方法(必须重载)
10      *
11      * @return
12      */
13     @Override
14     public String getMethod() {
15         return METHOD_NAME;
16     }
17  
18     public HttpDeleteWithBody(final String uri) {
19         super();
20         setURI(URI.create(uri));
21     }
22  
23     public HttpDeleteWithBody(final URI uri) {
24         super();
25         setURI(uri);
26     }
27  
28     public HttpDeleteWithBody() {
29         super();
30     }
31     
32 }

3. 用HttpClient 调用 HttpDeleteWithBody的方法,就可以进行body的操作了

 1  public static String doDelete(String data, String url) throws IOException {
 2         CloseableHttpClient client = null;
 3         HttpDeleteWithBody httpDelete = null;
 4         String result = null;
 5         try {
 6             client = HttpClients.createDefault();
 7             httpDelete = new HttpDeleteWithBody(url);
 8 
 9             httpDelete.addHeader("Content-type","application/json; charset=utf-8");
10             httpDelete.setHeader("Accept", "application/json; charset=utf-8");
11             httpDelete.setEntity(new StringEntity(data));
12 
13             CloseableHttpResponse response = client.execute(httpDelete);
14             HttpEntity entity = response.getEntity();
15             result = EntityUtils.toString(entity);
16 
17             if (200 == response.getStatusLine().getStatusCode()) {
18                 logger.info("DELETE方式请求远程调用成功.msg={}", result);
19             }
20         } catch (Exception e) {
21             logger.error("DELETE方式请求远程调用失败,errorMsg={}", e.getMessage());
22         } finally {
23             client.close();
24         }
25         return result;
26 
27     }
28 }

HttpClient使用put方式提交数据

 1 public static String httpPut(String urlPath, String data, String charSet, String[] header)
 2     {
 3         String result = null;
 4         URL url = null;
 5         HttpURLConnection httpurlconnection = null;
 6         try
 7         {
 8             url = new URL(urlPath);
 9             httpurlconnection = (HttpURLConnection) url.openConnection();
10             httpurlconnection.setDoInput(true);
11             httpurlconnection.setDoOutput(true);
12             httpurlconnection.setConnectTimeout(2000000);// 设置连接主机超时(单位:毫秒)
13             httpurlconnection.setReadTimeout(2000000);// 设置从主机读取数据超时(单位:毫秒)
14 
15             if (header != null)
16             {
17                 for (int i = 0; i < header.length; i++)
18                 {
19                     String[] content = header[i].split(":");
20                     httpurlconnection.setRequestProperty(content[0], content[1]);
21                 }
22             }
23 
24             httpurlconnection.setRequestMethod("PUT");
25             httpurlconnection.setRequestProperty("Content-Type", "application/json;charset=utf-8");
26 //            httpurlconnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
27 
28             if (StringUtils.isNotBlank(data))
29             {
30                 httpurlconnection.getOutputStream().write(data.getBytes("UTF-8"));
31             }
32             httpurlconnection.getOutputStream().flush();
33             httpurlconnection.getOutputStream().close();
34             int code = httpurlconnection.getResponseCode();
35 
36             if (code == 200)
37             {
38                 DataInputStream in = new DataInputStream(httpurlconnection.getInputStream());
39                 int len = in.available();
40                 byte[] by = new byte[len];
41                 in.readFully(by);
42                 if (StringUtils.isNotBlank(charSet))
43                 {
44                     result = new String(by, Charset.forName(charSet));
45                 } else
46                 {
47                     result = new String(by);
48                 }
49                 in.close();
50             } else
51             {
52                 logger.error("请求地址:" + urlPath + "返回状态异常,异常号为:" + code);
53             }
54         } catch (Exception e)
55         {
56             logger.error("访问url地址:" + urlPath + "发生异常", e);
57         } finally
58         {
59             url = null;
60             if (httpurlconnection != null)
61             {
62                 httpurlconnection.disconnect();
63             }
64         }
65         return result;
66     }

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转载自www.cnblogs.com/shenjiangwei/p/11068312.html