Xutils请求服务器json数据与下载文件

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String code_url = "https://ic.snssdk.com/user/mobile/send_code/v2/";

                            HttpUtils httpUtils = new HttpUtils();
                            //网址                            RequestParams params = new RequestParams();                            params.addBodyParameter("type", "1");// 必填                            params.addBodyParameter("mobile",shoujihao );// 必填

                            httpUtils.send(HttpMethod.POST, code_url, params,                                    new RequestCallBack<String>() {                                                               @Override                                public void onStart() {                                    // TODO Auto-generated method stub                                    super.onStart();                                    Log.i("TAG", "请求开始");                                }                                @Override                                public void onFailure(HttpException arg0, String arg1) {                                    Log.i("TAG", "发送验证码请求失败:  " + arg1);                                    Toast.makeText(PhoneZhuCe.this, "发送验证码请求失败:  "+ arg1, 0).show();                                }                                @Override                                public void onSuccess(ResponseInfo<String> arg0) {                                    Log.i("TAG", "发送验证码请求成功:  " + arg0.result);                                                                        String s=arg0.result;
                                    Gson gson=new Gson();                                    Loginphone fromJson = gson.fromJson(s, Loginphone.class);                                    String message = fromJson.getMessage();                                    if(message.equals("success")){                                        Intent intent = new Intent(PhoneZhuCe.this,                                                PhoneZhuCe2.class);                                                                               startActivity(intent);                                    }else{                                        Toast.makeText(PhoneZhuCe.this, fromJson.getData().getDescription(), 0)                                                .show();                                    }                                                                    }                            });

下载数据：

String path = Environment.getExternalStorageDirectory().getPath();    String target=path+"/image/"+num+".png";//下载文件保存的路径        HttpUtils http=new HttpUtils();
   //url路径    HttpHandler handler=http.download(url, target, true, true,new RequestCallBack<File>() {                @Override        public void onSuccess(ResponseInfo<File> arg0) {            // TODO Auto-generated method stub                    }                @Override        public void onFailure(HttpException arg0, String arg1) {            // TODO Auto-generated method stub                    }    });

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