OKHttp 发送 Post 请求：Json、Form 和 URL 传参

Post+Json请求：

OkHttpClient client = new OkHttpClient();
MediaType JSON = MediaType.parse('application/json; charset=utf-8');
JSONObject jsonObject = new JSONObject();
jsonObject.put('key1', 'value1');
jsonObject.put('key2', 'value2');
RequestBody body = RequestBody.create(JSON, jsonObject.toString());
String url = 'http://www.example.com';
Request request = new Request.Builder()
        .url(url)
        .post(body)
        .build();
Response response = client.newCall(request).execute();

Post+form请求：

OkHttpClient client = new OkHttpClient();
FormBody.Builder builder = new FormBody.Builder();
builder.add('key1', 'value1');
builder.add('key2', 'value2');
RequestBody body = builder.build();
String url = 'http://www.example.com';
Request request = new Request.Builder()
        .url(url)
        .post(body)
        .build();
Response response = client.newCall(request).execute();

支持url传参：

OkHttpClient client = new OkHttpClient();
HttpUrl.Builder urlBuilder = HttpUrl.parse('http://www.example.com').newBuilder();
urlBuilder.addQueryParameter('key1', 'value1');
urlBuilder.addQueryParameter('key2', 'value2');
String url = urlBuilder.build().toString();
MediaType JSON = MediaType.parse('application/json; charset=utf-8');
JSONObject jsonObject = new JSONObject();
jsonObject.put('key3', 'value3');
RequestBody body = RequestBody.create(JSON, jsonObject.toString());
Request request = new Request.Builder()
        .url(url)
        .post(body)
        .build();
Response response = client.newCall(request).execute();