OkHttp简单封装

简单封装OkHttp框架，单例模式。一句话即可使用。
返回值已进行JSON转换，拿到响应数据后的回调运行在主线程，可以直接修改UI。
已写get请求、post方式提交字符串、post方式提交表单、post方式上传图片，后续再添加。

依赖：

    //OkHttpimplementation 'com.squareup.okhttp3:okhttp:4.9.3'//Gsonimplementation 'com.google.code.gson:gson:2.8.5'

返回结果通用类：

/*** 服务端返回结果* @param <T>*/
@Data
@AllArgsConstructor
@NoArgsConstructor
public class JsonResult<T> {//状态 0 成功  1失败private int state;//主要数据private String data;//附加数据private String msg;
}

工具类：

import android.app.Activity;
import android.util.Log;import com.google.gson.Gson;import org.jetbrains.annotations.NotNull;import java.io.IOException;
import java.util.Map;
import java.util.concurrent.TimeUnit;import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;/*** OkHttp工具类*/
public class OkHttpRequestUtil {private static OkHttpClient client;private static final OkHttpRequestUtil okHttpRequestUtil = new OkHttpRequestUtil();public static OkHttpRequestUtil getInstance() {return okHttpRequestUtil;}private OkHttpRequestUtil() {client = new OkHttpClient.Builder().connectTimeout(10, TimeUnit.SECONDS).writeTimeout(10, TimeUnit.SECONDS).readTimeout(10, TimeUnit.SECONDS).build();}public interface ICallBack {void onResponse(JsonResult result);}/*-------------------------------------------------------------------------------------------------------提供给外部调用的方法*//*** post方式提交Json字符串** @param activity  Activity* @param url       子路径* @param postBody  要发送的字符串* @param iCallBack 请求成功的回调*/public void stringPost(Activity activity, String url, String postBody, ICallBack iCallBack) {MediaType mediaType = MediaType.parse("application/json; charset=utf-8");RequestBody requestBody = RequestBody.create(postBody, mediaType);Request request = new Request.Builder().url(Interface.API + url).post(requestBody).build();Call call = client.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(@NotNull Call call, @NotNull IOException e) {Log.d("onFailure", e.getMessage());toast(activity);}@Overridepublic void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {if (response.code() != 200) {toast(activity);} else {JsonResult jsonResult = new JsonResult();try {JSONObject jsonObject = new JSONObject(response.body().string());jsonResult.setState(jsonObject.getInt("state"));jsonResult.setData(jsonObject.getString("data"));jsonResult.setMsg(jsonObject.getString("msg"));} catch (JSONException e) {e.printStackTrace();}requestSuccess(activity, jsonResult, iCallBack);}}});}/*** post方式提交表单（已自动添加personToken）** @param activity  Activity* @param url       根路径后面的子路径* @param map       要发送的数据Map* @param iCallBack 请求成功的回调*/public void formPost(Activity activity, String url, Map<String, String> map, final ICallBack iCallBack) {FormBody.Builder builder = new FormBody.Builder();//从SharedPreference中取出personToken添加到表单中builder.add("id", activity.getSharedPreferences("user", Activity.MODE_PRIVATE).getString("personToken", ""));for (Map.Entry<String, String> entry : map.entrySet()) {builder.add(entry.getKey(), entry.getValue());}FormBody formBody = builder.build();Request request = new Request.Builder()//根路径拼接子路径.url(Interface.API + url).post(formBody).build();Call call = client.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(@NotNull Call call, @NotNull IOException e) {Log.d("onFailure", e.getMessage());toast(activity);}@Overridepublic void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {if (response.code() != 200) {toast(activity);} else {JsonResult jsonResult = new JsonResult();try {JSONObject jsonObject = new JSONObject(response.body().string());jsonResult.setState(jsonObject.getInt("state"));jsonResult.setData(jsonObject.getString("data"));jsonResult.setMsg(jsonObject.getString("msg"));} catch (JSONException e) {e.printStackTrace();}requestSuccess(activity, jsonResult, iCallBack);}}});}/*** Post方式上传图片** @param activity  Activity* @param url       根路径后面的子路径* @param id        id* @param file      图片文件* @param iCallBack 请求成功的回调*/public void formFilePost(Activity activity, String url, String id, File file, final ICallBack iCallBack) {MediaType mediaType = MediaType.parse("image/png");RequestBody fileBody = RequestBody.create(file, mediaType);RequestBody requestBody = new MultipartBody.Builder().setType(MultipartBody.FORM).addFormDataPart("file", "file", fileBody).addFormDataPart("id", id).build();Request request = new Request.Builder().url(Interface.API + url).post(requestBody).build();Call call = client.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(@NotNull Call call, @NotNull IOException e) {Log.d("onFailure", e.getMessage());toast(activity);}@Overridepublic void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {if (response.code() != 200) {toast(activity);} else {JsonResult result = new Gson().fromJson(response.body().string(), JsonResult.class);requestSuccess(activity, result, iCallBack);}}});}/*** get请求（已自动添加personToken）** @param activity  Activity* @param url       根路径后面的子路径* @param map       要发送的数据Map* @param iCallBack 请求成功的回调*/public void get(Activity activity, String url, Map<String, String> map, final ICallBack iCallBack) {StringBuilder builder = new StringBuilder(url);//从SharedPreference中取出personToken拼接到url后面builder.append("?id=");builder.append(activity.getSharedPreferences("user", Activity.MODE_PRIVATE).getString("personToken", ""));for (Map.Entry<String, String> entry : map.entrySet()) {builder.append("&");builder.append(entry.getKey());builder.append("=");builder.append(entry.getValue());}Request request = new Request.Builder()//根路径拼接子路径.url(Interface.API + builder.toString()).get().build();Call call = client.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(@NotNull Call call, @NotNull IOException e) {Log.d("onFailure", e.getMessage());toast(activity);}@Overridepublic void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {if (response.code() != 200) {toast(activity);} else {JsonResult jsonResult = new JsonResult();try {JSONObject jsonObject = new JSONObject(response.body().string());jsonResult.setState(jsonObject.getInt("state"));jsonResult.setData(jsonObject.getString("data"));jsonResult.setMsg(jsonObject.getString("msg"));} catch (JSONException e) {e.printStackTrace();}requestSuccess(activity, jsonResult, iCallBack);}}});}/*-------------------------------------------------------------------------------------------------------*//*** 请求成功后，将获取的数据传递给回调方法* 回调方法中的内容直接运行在主线程中** @param activity  Activity* @param result    JsonResult 拿到的数据* @param iCallBack 回调接口*/private static void requestSuccess(Activity activity, final JsonResult result, final ICallBack iCallBack) {activity.runOnUiThread(() -> {if (iCallBack != null) {iCallBack.onResponse(result);}});}private void toast(Activity activity) {Looper.prepare();Toast.makeText(activity, "网络连接失败", Toast.LENGTH_SHORT).show();Looper.loop();}
}

Activity中使用

Map<String, String> map = new HashMap<>();
map.put("enterpriseId", "1");
OkHttpRequestUtil.getInstance().formPost(this, "url", map, (result -> {// TODO something}));

说明：Interface是一个自定义类的名称，里面是一些public static final String的成员属性，用来保存一些服务器地址。

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