后臺調取api接口一直返回{"status":"0","info":"UNKNOWN_ERROR","infocode":"20003"}，未知錯誤，折騰一上午

需使用原生http請求，注意在Java后臺調用時key的類型

import java.io.*; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection;public class dgMapImpl implements gdMapGet {String key = "你的高德地圖web的key";@Overridepublic String gdMapService(String palceS) throws Exception {String url="https://restapi.amap.com/v3/assistant/inputtips?keywords="+palceS+"&key="+key;URL localURL = new URL(url);URLConnection connection = localURL.openConnection();HttpURLConnection httpURLConnection = (HttpURLConnection) connection;httpURLConnection.setRequestProperty("Accept-Charset", "utf-8");httpURLConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");InputStream inputStream = null;InputStreamReader inputStreamReader = null;BufferedReader reader = null;StringBuffer resultBuffer = new StringBuffer();String tempLine = null;//響應失敗if (httpURLConnection.getResponseCode() >= 300) {throw new Exception("HTTP Request is not success, Response code is " + httpURLConnection.getResponseCode());}try {inputStream = httpURLConnection.getInputStream();inputStreamReader = new InputStreamReader(inputStream);reader = new BufferedReader(inputStreamReader);while ((tempLine = reader.readLine()) != null) {resultBuffer.append(tempLine);}} finally {if (reader != null) {reader.close();}if (inputStreamReader != null) {inputStreamReader.close();}if (inputStream != null) {inputStream.close();}return resultBuffer.toString();}} }

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