本文共 6357 字，大约阅读时间需要 21 分钟。
虽然现在有许多成型的Http框架，比如OkHttp、Volley，但是有时候我们仅仅需要一个很简单的功能，比如仅需要一个Get和Post，那么我们用这些库就有种杀机用宰牛刀的感觉。于是就想着自己去封装一个简单的类来实现这部分功能。
public class HttpUtil { private HttpUtil() { } /** * get方法请求数据 * * @param url 请求地址 * @param params 请求参数 * @param callBack 回调接口 */ public static void get(final String url, final Map params, final HttpResponseCallBack callBack) { if (callBack != null) { new Thread(new Runnable() { @Override public void run() { try { //拼装请求参数列表 final StringBuilder sb = new StringBuilder(64); if (params != null) { sb.append("?"); for (Map.Entry entry : params.entrySet()) { sb.append(entry.getKey()); sb.append("="); sb.append(entry.getValue()); sb.append("&"); } sb.deleteCharAt(sb.length() - 1); } //构建新连接 URL httpUrl = new URL(url + sb.toString()); LogUtil.i(url + sb.toString()); HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection(); conn.setConnectTimeout(3000); conn.setReadTimeout(3000); conn.setRequestMethod("GET"); BufferedReader br = new BufferedReader( new InputStreamReader(conn.getInputStream(), "UTF-8")); //接受返回数据 sb.setLength(0); String strTemp; while ((strTemp = br.readLine()) != null) { sb.append(strTemp).append('\n'); } conn.disconnect(); AsyncRun.run(new Runnable() { @Override public void run() { callBack.onSuccess(sb.toString()); } }); } catch (final IOException e) { AsyncRun.run(new Runnable() { @Override public void run() { callBack.onFailure("失败信息：", e); } }); } } }).start(); } } /** * post方法请求数据 * * @param url 请求地址 * @param params 请求参数 * @param callBack 回调地址 */ public static void post(final String url, final Map params, final HttpResponseCallBack callBack) { if (callBack != null) { new Thread(new Runnable() { @Override public void run() { try { final StringBuilder sb = new StringBuilder(64); URL httpUrl = new URL(url); HttpURLConnection conn = (HttpURLConnection) httpUrl.openConnection(); conn.setConnectTimeout(3000); conn.setReadTimeout(3000); conn.setRequestMethod("POST"); conn.setDoOutput(true); //拼装请求参数列表 if (params != null) { for (Map.Entry entry : params.entrySet()) { sb.append(entry.getKey()); sb.append("="); sb.append(entry.getValue()); sb.append("&"); } sb.deleteCharAt(sb.length() - 1); conn.getOutputStream().write(sb.toString().getBytes()); } BufferedReader br = new BufferedReader( new InputStreamReader(conn.getInputStream(), "UTF-8")); //接受返回数据 sb.setLength(0); String strTemp; while ((strTemp = br.readLine()) != null) { sb.append(strTemp).append('\n'); } conn.disconnect(); AsyncRun.run(new Runnable() { @Override public void run() { callBack.onSuccess(sb.toString()); } }); } catch (final IOException e) { AsyncRun.run(new Runnable() { @Override public void run() { callBack.onFailure("失败信息：", e); } }); } } }).start(); } } /** * 获取回调 */ public interface HttpResponseCallBack { void onSuccess(String result); void onFailure(String result, Exception e); }} public final class AsyncRun { public static void run(Runnable runnable){ Handler handler = new Handler(Looper.getMainLooper()); handler.post(runnable); }}