PS：這個jar包，在2007年之后就沒有更新過了， 是比較老的版本了。追求新的版本 用HttpComponents 比較好

引入的jar包為：

<!-- https://mvnrepository.com/artifact/commons-httpclient/commons-httpclient --><dependency> <groupId>commons-httpclient</groupId> <artifactId>commons-httpclient</artifactId> <version>3.1</version></dependency>

具體實現類為：

import org.apache.commons.httpclient.HttpClient;import org.apache.commons.httpclient.methods.GetMethod;import org.apache.commons.httpclient.methods.PostMethod;import org.apache.commons.httpclient.methods.RequestEntity;import org.apache.commons.httpclient.methods.StringRequestEntity;import org.apache.commons.httpclient.params.HttpMethodParams;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import java.io.IOException;public class HttpClientHelper { private static Logger logger = LoggerFactory.getLogger(HttpClientHelper.class); private HttpClientHelper() { } /** * 發起POST請求 * * @param url url * @param paramJson 參數的json格式 */ public static String sendPost(String url, String paramJson) { logger.info('開始發起POST請求，請求地址為{}，參數為{}', url, paramJson); // 創建httpClient實例對象 HttpClient httpClient = new HttpClient(); // 設置httpClient連接主機服務器超時時間：15000毫秒 httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(15000); // 創建post請求方法實例對象 PostMethod postMethod = new PostMethod(url); // 設置post請求超時時間 postMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, 60000); postMethod.addRequestHeader('Content-Type', 'application/json'); try { //json格式的參數解析 RequestEntity entity = new StringRequestEntity(paramJson, 'application/json', 'UTF-8'); postMethod.setRequestEntity(entity); httpClient.executeMethod(postMethod); String result = postMethod.getResponseBodyAsString(); postMethod.releaseConnection(); return result; } catch (IOException e) { logger.error('POST請求發出失敗，請求的地址為{}，參數為{}，錯誤信息為{}', url, paramJson, e.getMessage(), e); } return null; } /** * 發起GET請求 * * @param urlParam url請求，包含參數 */ public static String sendGet(String urlParam) { logger.info('開始發起GET請求，請求地址為{}', urlParam); // 創建httpClient實例對象 HttpClient httpClient = new HttpClient(); // 設置httpClient連接主機服務器超時時間：15000毫秒 httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(15000); // 創建GET請求方法實例對象 GetMethod getMethod = new GetMethod(urlParam); // 設置post請求超時時間 getMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, 60000); getMethod.addRequestHeader('Content-Type', 'application/json'); try { httpClient.executeMethod(getMethod); String result = getMethod.getResponseBodyAsString(); getMethod.releaseConnection(); logger.info('返回信息為{}', result); return result; } catch (IOException e) { logger.error('GET請求發出失敗，請求的地址為{}，錯誤信息為{}', urlParam, e.getMessage(), e); } return null; } public static void main(String[] args) { String url = 'https://jiashubing.cn/tencenttest'; String param = '{'aaa':'bbbbbbb'}'; sendPost(url, param); String urlParam = 'https://jiashubing.cn/talk/document?fileid=1234'; sendGet(urlParam); }}

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網。