httpClient的get方法

最新推荐文章于 2024-01-15 10:30:21 发布

iteye_1029

最新推荐文章于 2024-01-15 10:30:21 发布

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分类专栏： httpclient 文章标签：大数据

本文链接：https://blog.youkuaiyun.com/iteye_1029/article/details/81683098

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public class HttpClientTest {


	 public static void main(String[] args) {
		 HttpClient httpClient = new HttpClient();
		 GetMethod getMethod = new GetMethod("http://www.sina.com.cn");
		 getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
				    new DefaultHttpMethodRetryHandler());
		try {
			int statusCode = httpClient.executeMethod(getMethod);
			System.out.println("charset-->" + getMethod.getResponseCharSet());
//			Header head =  getMethod.getResponseHeader("Content-Type");
//			System.out.println(head.getValue());
			Header[] headers=getMethod.getResponseHeaders();
				for (Header header : headers) {
					System.out.println(header.getName()+" "+header.getValue());

				}

			  if (statusCode != HttpStatus.SC_OK) {
				    System.err.println("Method failed: "
				      + getMethod.getStatusLine());
				   }
			  //适合小数据量的网站
//			  byte[] responseBody = getMethod.getResponseBody();
//			   System.out.println(new String(responseBody));


			  //适合大数据量网站
			  InputStream in = getMethod.getResponseBodyAsStream();

		        byte[] responseBodyByte = null;

		        if (in!=null)
		        {
		         byte[] tmp = new byte[4096];
		         int bytesRead = 0;
		         ByteArrayOutputStream buffer = new ByteArrayOutputStream();
		         while((bytesRead = in.read(tmp))!=-1)
		         {
		          buffer.write(tmp,0,bytesRead);
		         }
		         responseBodyByte = buffer.toByteArray();
		        }

		        System.out.println(new String(responseBodyByte));

		} catch (HttpException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			 getMethod.releaseConnection();
		}
	}

}