Java編寫POST請求

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package com.mytesting;import java.io.DataOutputStream;import java.io.InputStream;import java.net.URL;import java.net.URLConnection;import org.apache.commons.io.IOUtils;public class post {public static void main(String[] args) {// TODO Auto-generated method stubdoHttpPost("http://172.18.3.27:8031/Activity/GetActivityList","{\"TPID\":123}");//第一個是請求URL 第二個是body內的參數}/** * 發送POST請求 *  * @param postBody * @return */public static String doHttpPost(String URL,String postBody) {// System.out.println("發起的資料:" + postBody);byte[] xmlData = postBody.getBytes();InputStream instr = null;try {URL url = new URL(URL);URLConnection urlCon = url.openConnection();urlCon.setDoOutput(true);urlCon.setDoInput(true);urlCon.setUseCaches(false);urlCon.setRequestProperty("Content-Type", "application/json");urlCon.setRequestProperty("User-Agent", "app30007/3F845F3287A3C3F20A04B08C5074FC95/2B80541F-1C28-4FE7-8EEF-4A20D688A984/0/");urlCon.setRequestProperty("Content-length",String.valueOf(xmlData.length));DataOutputStream printout = new DataOutputStream(urlCon.getOutputStream());printout.write(xmlData);printout.flush();printout.close();instr = urlCon.getInputStream();byte[] bis = IOUtils.toByteArray(instr);String ResponseString = new String(bis, "UTF-8");if ((ResponseString == null) || ("".equals(ResponseString.trim()))) {System.out.println("返回空");} System.out.println("返回資料為:" + ResponseString);return ResponseString;} catch (Exception e) {e.printStackTrace();return "0";} finally {try {// out.close();instr.close();} catch (Exception ex) {return "0";}}}}

　　引入所需的包，有一些額外的包需要下載

Java編寫POST請求