http通信实现方式

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原创最新推荐文章于 2026-08-14 11:53:25 发布 2.1k 阅读 AI 写同款· GEO 优化 ›

Java的HTTP通信 Java HTTP通信 1、任务简介本部分任务属于杜老师《工程训练》中的任务3.1，本博客挑出其中的第一个普通任务和第一个挑战任务进行讲解，主要涉及了Java中HTTP通信的Get方式； HTTP通信主要有两种方式POST方式和GET方式,前者通过HTTP消息实体发送数据给服务器，安全性高，数据传输大小没有限制，后者通过URL的查询字符串传递给服务器参数，以明文显示在浏览器地址栏，保密性差... 阅读详情

1. client

1.1 使用apache client

重发参数设置：不重发

httpClient.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler(0, false));

import java.io.IOException;

import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class HttpClient {
	public String httpClientInvoke(String request) {
		int maxTimeOut = 30000;
		// 请求参数设置
		RequestConfig requestConfig = RequestConfig.custom().setConnectionRequestTimeout(maxTimeOut).setConnectTimeout(maxTimeOut).setSocketTimeout(maxTimeOut).build();

		CloseableHttpClient httpClient = HttpClients.custom().setDefaultRequestConfig(requestConfig).build();
		StringEntity stringEntity = new StringEntity(String.valueOf(request), "GBK");
		stringEntity.setContentEncoding("GBK");
		stringEntity.setContentType("text/xml; charset=GBK");
		HttpPost httpPost = new HttpPost("http://up.meicano.com");
		httpPost.setHeader("Content-Type", "application/xmlstream");
		httpPost.setEntity(stringEntity);
		String rspXml = "";
		CloseableHttpResponse response = null;
		HttpEntity httpEntity = null;
		try {
			response = httpClient.execute(httpPost);
			httpEntity = response.getEntity();
			if (httpEntity != null) {
				rspXml = EntityUtils.toString(httpEntity, "GBK");
			}

		} catch (ClientProtocolException e) {
			System.err.println("协议异常" + e.getStackTrace());
		} catch (IOException e) {
			System.err.println("IO异常" + e.getStackTrace());
		} finally {
			try {
				EntityUtils.consume(httpEntity);
				response.close();
				httpClient.close();
			} catch (IOException e) {
				System.err.println("释放资源异常" + e.getStackTrace());
			}
		}
		return rspXml;
	}
}