Okhttp的简单使用

项目中，我们需要和服务器进行大量的交互，其中最为频繁地就是Get方式和Post方式，下面就将主流的网络框架Okhttp的

Get方式和Post方式的使用做一下介绍：

1.Get方式：

OkHttpClient okHttpClient = new OkHttpClient
                    .Builder()
                    .connectTimeout(10, TimeUnit.SECONDS)
                    .readTimeout(10,TimeUnit.SECONDS)
                    .writeTimeout(10,TimeUnit.SECONDS)
                    .build();
            Request request = new Request
                    .Builder()
                    .url(Constants.GET_USER_ADDRESS_URL + url)
                    .build();
            Call call = okHttpClient.newCall(request);
            call.enqueue(new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {
                    Utils.runOnUIThread(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(DeliveryAddressActivity.this,Constants.CONNECTION_TIMEOUT,Toast.LENGTH_SHORT).show();
                        }
                    });
                }

                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    String s = response.body().string();
                    Log.e("add",s);
                    GetAddressListResponse getAddressListResponse =
                            GsonUtils.paserJsonToBean(s,GetAddressListResponse.class);
                    Message msg = new Message();
                    msg.what = 1;
                    msg.obj = getAddressListResponse;
                    handler.sendMessage(msg);
                }
            });

需要注意几点：请求网络超时需要在onFailure()方法中进行处理，请求成功后需要用到Handler机制。

2.Post方式：

OkHttpClient okHttpClient = new OkHttpClient
                                .Builder()
                                .connectTimeout(10, TimeUnit.SECONDS)
                                .readTimeout(10,TimeUnit.SECONDS)
                                .writeTimeout(10,TimeUnit.SECONDS)
                                .build();
                        RequestBody requestBody = new FormBody.Builder()
                                .add("username",userName)
                                .add("oldPwdMD5",MD5Tools.md5(etOldPsw.getText().toString()).toUpperCase())
                                .add("newPwdMD5",MD5Tools.md5(etNewPsw.getText().toString()).toUpperCase())
                                .build();
                        Request requestPost = new Request.Builder()
                                .url(Constants.CHANGE_USER_PSW_URL + "appid=" + Constants.APP_ID_S +
                                "&encrypt=" + encrypt)
                                .post(requestBody)
                                .build();
                        okHttpClient.newCall(requestPost).enqueue(new Callback() {
                            @Override
                            public void onFailure(Call call, IOException e) {
                                Utils.runOnUIThread(new Runnable() {
                                    @Override
                                    public void run() {
                                        Toast.makeText(ModifyPswActivity.this,Constants.CONNECTION_TIMEOUT,Toast.LENGTH_SHORT).show();
                                    }
                                });
                            }

                            @Override
                            public void onResponse(Call call, Response response) throws IOException {
                                String s = response.body().string();
                                Log.e("changePsw",s);
                                ChangePswResponse changePswResponse =
                                        GsonUtils.paserJsonToBean(s,ChangePswResponse.class);
                                Message msg = new Message();
                                msg.what = 1;
                                msg.obj = changePswResponse;
                                handler.sendMessage(msg);
                            }
                        });

特别提示：请求体中的值无需encode。