Question

我花了很多时间来搜索如何解决我的问题但是不成功，所以我跳了一些可以帮助我。

我用android studio制作我的应用程序：我用登录和httm请求完成我的页面（100％工作以构思并创建新帐户）现在我尝试向我的服务器发出Get请求并获取用户名rerver转换我尝试在字符串上强制转换的字节数组并获取只是null“”。

有我的代码： mainActivity.java

  Button b = (Button)findViewById(R.id.b2);
    b.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            SyncHttpClient client = new SyncHttpClient();
            RequestParams params = new RequestParams();

            params.put("email", "test3@t.com");

            // Handle request
            client.get("https://......../user/get/", params, new AsyncHttpResponseHandler() {
                @Override
                public void onSuccess(int statusCode, Header[] headers, byte[] response) {
                    // called when response HTTP status is "200 OK"
                    System.out.println("response ----" + response);
                    String res = new String(response); //convetion Byte[] to String that i use
                    Context context = getApplicationContext();
                    Toast.makeText(context, res, Toast.LENGTH_SHORT).show();
                    System.out.println("res ----" + res);

                }

                @Override
                public void onFailure(int statusCode, Header[] headers, byte[] errorResponse, Throwable e) {
                    // called when response HTTP status is "4XX" (eg. 401, 403, 404)
                    System.out.println("errorResponse -----"+errorResponse);
                    String res = new String(errorResponse);
                    Context context = getApplicationContext();
                   // Toast.makeText(context, res, ast.LENGTH_SHORT).show();
                    System.out.println("ERROR--" + res);
                }
            });
        }});

服务器端看起来像这样： views.py

def get_users(req):
"""
Use url :
    https://...../user/get/
With arguments : 
    ?email=EMAIL
"""
email = req.GET.get('email')
if email is not None:
    exists = User.objects.filter(email=email)
    if len(exists) == 0:
        return HttpResponse("Error invalid email !")
    else:
        res = "%s:%s" %(exists[0].username, exists[0].points)
        return HttpResponse(exists[0].username)
else:
    return HttpResponse("Missing information !")

我在Android Monitor上获得的内容：

I/System.out: response------[B@4136b800
I/System.out: res --------

你可以在转换后看到我只有NULL。有人可以帮我PLZ

byte [] to string return null Android

0 个答案: