• 【HttpClient】一个http_post请求例子


    package httpclient.httpclient;
    
    import java.io.IOException;
    import org.apache.http.Header;
    import org.apache.http.HttpEntity;
    import org.apache.http.client.methods.CloseableHttpResponse;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.impl.client.CloseableHttpClient;
    import org.apache.http.impl.client.HttpClientBuilder;
    import org.apache.http.util.EntityUtils;
    
    public class HttpClientUtil {
    	public void testPost() {
    		//1.创建客户端访问服务器的httpclient对象
    		CloseableHttpClient httpClient = HttpClientBuilder.create().build();
    		//2.定义请求的url
    		String url = "https://XXX.XXX.com/NC1000001";
    		//3.以请求的连接地址创建get/post请求对象
    		HttpPost post = new HttpPost(url);
    		//如果有header请求,添加header请求
    		post.addHeader("x-api-key", "XXX");
    		post.addHeader("x-lang", "en-US");
    		try {
    			//4.向服务器发送请求,并获取返回数据
    			CloseableHttpResponse response = httpClient.execute(post);
    			//获取返回的所有headers
    			Header[] headers = response.getAllHeaders();
    			for (Header header : headers) {
    				System.out.println(header);
    			}
    			//获取返回的状态
    			int status = response.getStatusLine().getStatusCode();
    			System.out.println(status);
    			//获取HttpEntity消息载体对象
    			HttpEntity entity = response.getEntity();
    			// EntityUtils中的toString()方法转换服务器的响应数据
    			String str = EntityUtils.toString(entity, "utf-8");
    			System.out.println("服务器的响应是:" + str);
    			//5.关闭连接
    			httpClient.close();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    	}
    
    	public static void main(String[] args) {
    		HttpClientUtil util = new HttpClientUtil();
    		util.testPost();
    	}
    }
    

    运行结果:

    Date: Wed, 06 Sep 2017 09:49:39 GMT
    Server: Apache/2.4.7 (Ubuntu)
    Cache-Control: no-cache, private
    X-RateLimit-Limit: 60
    X-RateLimit-Remaining: 59
    Content-Length: 150
    Keep-Alive: timeout=5, max=100
    Connection: Keep-Alive
    Content-Type: application/json
    200
    服务器的响应是:{"id":1000001,"tracking_id":"NC1000001"}

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  • 原文地址:https://www.cnblogs.com/Jourly/p/7486148.html
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