package com.ruoyi.common.utils.http;
import org.apache.http.HttpEntity;
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.message.BasicHeader;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
/**
* 作者：叶长种
* 创建日期：2021/11/20 15:29
* 描述：HttpClients辅助类
*/
public class HttpClientsHelper {
/**
* 向指定 URL 发送POST方法的请求
* @param url 发送请求的 URL
* @param jsonString 请求参数，请求参数应该是json字符串的形式。
* @return 所代表远程资源的响应结果，对应的也是json字符串
*/
public static String sendPost(String url, String jsonString){
String body = "";
try {
//创建httpclient对象
CloseableHttpClient client = HttpClients.createDefault();
//创建post方式请求对象
HttpPost httpPost = new HttpPost(url);
//装填参数
StringEntity s = new StringEntity(jsonString, "utf-8");
s.setContentEncoding(new BasicHeader("contentType",
"application/json"));
//设置参数到请求对象中
httpPost.setEntity(s);
//System.out.println("请求地址：" + url);
//设置header信息
//指定报文头【Content-type】、【User-Agent】
//httpPost.setHeader("Content-type", "application/x-www-form-urlencoded");
httpPost.setHeader("Content-type", "application/json");
httpPost.setHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
//执行请求操作，并拿到结果（同步阻塞）
CloseableHttpResponse response = client.execute(httpPost);
//获取结果实体
HttpEntity entity = response.getEntity();
if (entity != null) {
//按指定编码转换结果实体为String类型
body = EntityUtils.toString(entity, "UTF-8");
}
EntityUtils.consume(entity);
//释放链接
response.close();
} catch (IOException e) {
e.printStackTrace();
}
return body;
}
}
Original: https://www.cnblogs.com/yechangzhong-826217795/p/15581599.html
Author: 叶长种
Title: Java实现HttpClient发送GET、POST请求(https、http)
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