Java commons-httpclient如果实现get及post请求

PS：这个jar包，在2007年之后就没有更新过了， 是比较老的版本了。追求新的版本 用HttpComponents 比较好

引入的jar包为：

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

具体实现类为：

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() { } /** * 发起POST请求 * * @param url url * @param paramJson 参数的json格式 */ public static String sendPost(String url, String paramJson) { logger.info('开始发起POST请求，请求地址为{}，参数为{}', url, paramJson); // 创建httpClient实例对象 HttpClient httpClient = new HttpClient(); // 设置httpClient连接主机服务器超时时间：15000毫秒 httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(15000); // 创建post请求方法实例对象 PostMethod postMethod = new PostMethod(url); // 设置post请求超时时间 postMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, 60000); postMethod.addRequestHeader('Content-Type', 'application/json'); try { //json格式的参数解析 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请求发出失败，请求的地址为{}，参数为{}，错误信息为{}', url, paramJson, e.getMessage(), e); } return null; } /** * 发起GET请求 * * @param urlParam url请求，包含参数 */ public static String sendGet(String urlParam) { logger.info('开始发起GET请求，请求地址为{}', urlParam); // 创建httpClient实例对象 HttpClient httpClient = new HttpClient(); // 设置httpClient连接主机服务器超时时间：15000毫秒 httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(15000); // 创建GET请求方法实例对象 GetMethod getMethod = new GetMethod(urlParam); // 设置post请求超时时间 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('返回信息为{}', result); return result; } catch (IOException e) { logger.error('GET请求发出失败，请求的地址为{}，错误信息为{}', 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); }}

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