通过java发送post请求参数为json格式通过java发送post请求参数为js

注：转载文章，当时为了做这个，费了好久时间没有解决，这个是唯一一个有用的，复制备下次
ava模拟post请求发送json，用两种方式实现，第一种是HttpURLConnection发送post请求，第二种是使用httpclient模拟post请求。我使用的是第二种方法，下面是具体代码。

import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; 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.protocol.HTTP; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; /** * http请求工具 */ public class HttpUtil {private static final Logger logger = LoggerFactory.getLogger(HttpUtil.class); /** * 发送post请求 * @param json * @param URL * @return */ public static String sendPost(JSONObject json,String URL) { CloseableHttpClient client = HttpClients.createDefault(); HttpPost post = new HttpPost(URL); post.setHeader("Content-Type", "application/json"); post.addHeader("Authorization", "Basic YWRtaW46"); String result; try { StringEntity s = new StringEntity(json.toString(), "utf-8"); s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json")); post.setEntity(s); // 发送请求 HttpResponse httpResponse = client.execute(post); // 获取响应输入流 InputStream inStream = httpResponse.getEntity().getContent(); BufferedReader reader = new BufferedReader(new InputStreamReader( inStream, "utf-8")); StringBuilder strber = new StringBuilder(); String line; while ((line = reader.readLine()) != null) strber.append(line + "\n"); inStream.close(); result = strber.toString(); if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { System.out.println("请求服务器成功，做相应处理"); } else { System.out.println("请求服务端失败"); } } catch (Exception e) { logger.error("请求异常："+e.getMessage()); throw new RuntimeException(e); } return result; } }

调用方法

public static void main(String[] args) { JSONObject EventTraceInput =new JSONObject(); EventTraceInput.put("AreaCode","520181"); EventTraceInput.put("TaskCode", "0"); EventTraceInput.put("Opinion","test"); JSONArray EventFile=new JSONArray(); JSONObject file1 = new JSONObject(); file1.put("TaskCode", 0); file1.put("FileState",0); file1.put("FileType",0); file1.put("FileName","1.jpg"); file1.put("FileUrl",""); file1.put("FileBase64",""); EventFile.add(file1); EventTraceInput.put("EventFiles",EventFile); String url="***"; System.out.println(sendPost(EventTraceInput,url)); }

【通过java发送post请求参数为json格式】测试通过