1.需要引入的jar包。
使用idea导入com.budjb:http-requests-httpcomponents-client:2.0.2,如下图:
2.工具类HttpUtil.java,代码如下:
package com.util;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;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 HttpUtil {private static String charset = "utf-8";private static CloseableHttpClient httpClient = HttpClients.createDefault();@SuppressWarnings({"unchecked", "rawtypes"})public static String doPost(String url, String jsonStr) {HttpPost httpPost;String result = null;try {httpPost = new HttpPost(url);// 设置参数httpPost.setHeader("content-Type","application/json;charset=UTF-8");StringEntity entity = new StringEntity(jsonStr);httpPost.setEntity(entity);HttpResponse response = httpClient.execute(httpPost);if (response != null) {HttpEntity resEntity = response.getEntity();if (resEntity != null) {result = EntityUtils.toString(resEntity, charset);}}} catch (Exception ex) {ex.printStackTrace();}return result;}}
