/**
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静态内部类单例模式
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OKHttp的重点
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1:同步和异步的区别
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2:get和POST怎么使用
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3:怎么封装
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扩展有拦截器,上传图片,源码区看一看
*/
public class OkUtils {
private OkHttpClient okHttpClient;private OkUtils() {
//日志拦截器
HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();
okHttpClient = new OkHttpClient.Builder()
.connectTimeout(20, TimeUnit.SECONDS)
.readTimeout(20, TimeUnit.SECONDS)
.callTimeout(20, TimeUnit.SECONDS)
.addInterceptor(loggingInterceptor)
.build();
}
//使用单列模式
public static OkUtils getInstance() {
return OkHolder.okUtils;
}static class OkHolder {
private static final OkUtils okUtils = new OkUtils();
}//这是同步的get和post
public String getSync(String url) throws IOException {
Request request = new Request.Builder().url(url).build();
return okHttpClient.newCall(request).execute().body().string();
}public String postSync(String url, String key, String value) throws IOException {
RequestBody body = new FormBody.Builder().add(key, value).build();
Request request = new Request.Builder().url(url).post(body).build();
return okHttpClient.newCall(request).execute().body().string();
}//异步的get和post
public void getAsync(String url, Callback callback) {
Request request = new Request.Builder().url(url).build();
okHttpClient.newCall(request).enqueue(callback);
}public void postAsync(String url, Callback callback) {
RequestBody body = new FormBody.Builder().add(“key”, “value”).build();
Request request = new Request.Builder().url(url).post(body).build();
okHttpClient.newCall(request).enqueue(callback);
}//上传图片 必须是POST
public void upLoadImage(String url, String uid, Callback callback) {
File file = new File(Environment.getExternalStorageDirectory() + “/Pictures/test.jpg”);
//上传图片需要 MultipartBody
MultipartBody.Builder body = new MultipartBody.Builder().setType(MultipartBody.FORM)
.addFormDataPart(“uid”, uid)
.addFormDataPart(“file”, “test.jpg”, RequestBody.create(MediaType.parse(“image/jpg”), file));
RequestBody body1 = body.build();
Request request = new Request.Builder().url(url).post(body1).build();
okHttpClient.newCall(request).enqueue(callback);}
}