Android 封装 Http 请求工具工具类import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.util.Map; /** * http 请求工具 * * author Tellsea * date 2021-11-24 */ public class HttpUtils { /** * get请求封装 * * param url * param params * param encode * param listener */ public static void getRequest(String url, MapString, String params, String encode, OnResponseListener listener) { StringBuffer sb new StringBuffer(url); sb.append(?); if (params ! null !params.isEmpty()) { //增强for遍历循环添加拼接请求内容 for (Map.EntryString, String entry : params.entrySet()) { sb.append(entry.getKey()).append().append(entry.getValue()).append(); } sb.deleteCharAt(sb.length() - 1); if (listener ! null) { try { URL path new URL(sb.toString()); if (path ! null) { HttpURLConnection con (HttpURLConnection) path.openConnection(); //设置请求方式 con.setRequestMethod(GET); //链接超时3秒 con.setConnectTimeout(3000); con.setDoOutput(true); con.setDoInput(true); OutputStream os con.getOutputStream(); os.write(sb.toString().getBytes(encode)); os.close(); //应答码200表示请求成功 if (con.getResponseCode() 200) { onSuccess(encode, listener, con); } } } catch (Exception error) { error.printStackTrace(); onError(listener, error); } } } } /** * POST请求 * * param url * param params * param encode * param listener */ public static void postRequest(String url, MapString, String params, String encode, OnResponseListener listener) { StringBuffer sb new StringBuffer(); if (params ! null !params.isEmpty()) { for (Map.EntryString, String entry : params.entrySet()) { sb.append(entry.getKey()).append().append(entry.getValue()).append(); } sb.deleteCharAt(sb.length() - 1); } if (listener ! null) { try { URL path new URL(url); if (path ! null) { HttpURLConnection con (HttpURLConnection) path.openConnection(); con.setRequestMethod(POST); //设置请求方法POST con.setConnectTimeout(3000); con.setDoOutput(true); con.setDoInput(true); byte[] bytes sb.toString().getBytes(); OutputStream outputStream con.getOutputStream(); outputStream.write(bytes); outputStream.close(); if (con.getResponseCode() 200) { onSuccess(encode, listener, con); } } } catch (Exception e) { e.printStackTrace(); onError(listener, e); } } } private static void onError(OnResponseListener listener, Exception onError) { listener.onError(onError.toString()); } private static void onSuccess(String encode, OnResponseListener listener, HttpURLConnection con) throws IOException { InputStream inputStream con.getInputStream(); //创建内存输出流 ByteArrayOutputStream baos new ByteArrayOutputStream(); int len 0; byte[] bytes new byte[1024]; if (inputStream ! null) { while ((len inputStream.read(bytes)) ! -1) { baos.write(bytes, 0, len); } String str new String(baos.toByteArray(), encode); listener.onSuccess(str); } } }/** * 请求回调 * * author Tellsea * date 2021-11-24 */ public interface OnResponseListener { void onSuccess(String response); void onError(String error); }使用案例MapString, String map new HashMap();map.put(“extract”, encrypt);HttpUtils.getRequest(“http://tellsea.4kb.cn/arcFace/arcFace”, map, “utf-8”, new OnResponseListener() {Overridepublic void onSuccess(String response) {System.out.println(response);AjaxResult result new Gson().fromJson(response, AjaxResult.class);if (IntegerUtils.eq(result.getCode(), 200)) {// 处理逻辑业务} else {// 识别失败}}Overridepublic void onError(String error) {System.out.println(请求失败 error);}});Android开发的更多学习资料可以扫码免费领取Android基础课程资料包目录第一章 UI第一章 UI更有更多资料加微信免费领取