我刚刚开始使用LoopJ AndroidAsyncHttp库及其出色的数据上传功能。
但是，我现在正在尝试使用get请求获得响应，而且我似乎无法理解为什么没有调用onSuccess和onFailure方法。我在这里浏览了所有问题，似乎找不到解决onSuccess方法新实现的问题。有人可以帮忙吗？
在ButtonClick上调用的方法：
public void displayUploaded(View view){
RequestParams params=new RequestParams();
try{
AsyncHttpClient client = new AsyncHttpClient();
client.get("http://192.168.1.4/clientservertest/returnUploadedImages.php",
new JsonHttpResponseHandler() {
@Override
public void onSuccess(JSONObject jsonObject) {
// Display a "Toast" message
Toast.makeText(getApplicationContext(), "Success!", Toast.LENGTH_LONG).show();
Log.d("android", jsonObject.toString());
}
@Override
public void onFailure(int statusCode, Throwable throwable, JSONObject error) {
// Display a "Toast" message
Toast.makeText(getApplicationContext(), "Error: " + statusCode + " " + throwable.getMessage(), Toast.LENGTH_LONG).show();
// Log error message
// to help solve any problems
Log.e("android", statusCode + " " + throwable.getMessage());
}
});
}
catch(Exception e){
Toast toast2=Toast.makeText(getApplicationContext(),"Failed first TRY",Toast.LENGTH_LONG);
toast2.show();
e.printStackTrace();
}
}
这是我的php代码（在chrome上使用Postman Client可以正常工作，我将输出发布到EDIT2中）：
<?php
#Connect to Database
$con = mysqli_connect("localhost","root","", "mytestdatabase");
#Check connection
if (mysqli_connect_errno()) {
echo 'Database connection error: ' . mysqli_connect_error();
exit();
}
#Query the database to get the user details.
$userdetails = mysqli_query($con, "SELECT * FROM images");
#If no data was returned, check for any SQL errors
if (!$userdetails) {
echo 'Could not run query: ' . mysqli_error($con);
exit;
}
#Return the results
$rows = array();
while($r = mysqli_fetch_assoc($userdetails)) {
$rows[] = $r;
}
print(json_encode($rows));
?>
我也尝试过使用其他ResponseHandlers进行相同的操作，但这也不起作用。真希望能得到答案！
编辑：添加有效的代码，并在同一活动中完美地工作。这是一个发帖请求：
File selectedPicture=new File(picturePath);
RequestParams params=new RequestParams();
try{
params.put("UploadedPic",selectedPicture);
AsyncHttpClient client = new AsyncHttpClient();
client.post("http://192.168.1.4/clientservertest/imageupload.php", params,new AsyncHttpResponseHandler());
}
EDIT2：响应从php页面返回到POSTMAN客户端：
[{“ id”：“ 7”，“ path”：“ uploads / speed.png”}，{“ id”：“ 8”，“ path”：“ uploads / Untitled.png”}，{“ id”： “ 9”，“ path”：“ uploads / Untitled.png”}，{“ id”：“ 10”，“ path”：“ uploadsspeed_2.png”}，{“ id”：“ 11”，“ path”： “ uploads / speed_3.png”}]
看起来您的服务器正在返回JSON数组，因此您应该尝试在JsonHttpResponseHandler中重写onSuccess（JSONArray array）方法。
client.get("http://192.168.1.4/clientservertest/returnUploadedImages.php",
new JsonHttpResponseHandler() {
@Override
public void onSuccess(JSONArray jsonArray) {
Toast.makeText(getApplicationContext(), "Success!", Toast.LENGTH_LONG).show();
Log.d("android", jsonArray.toString());
}
//etc...
});
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我来说两句