尝试将映像从firebase数据库获取到存储时出现存储异常
我正在尝试将一个图像存储到FireBase数据库中，我很确定所有的代码都可以很好地获取imagelink，因为它不再像以前那样显示错误。然而现在，当我上传图片时，出现了一个新问题。这与存储异常有关，我猜它在实际从存储中提取imagelink并将其插入数据库时遇到了问题。下面是我认为出现问题的代码:
private StorageReference PostsImagesReference;
private DatabaseReference PostsRef;
private FirebaseAuth mAuth;
private String Description;
private String saveCurrentDate;
private String saveCurrentTime;
private String postRandomName;
private String currentUserID;
//private String downloadUrl;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_post);
mAuth = FirebaseAuth.getInstance();
currentUserID = mAuth.getCurrentUser().getUid();
PostsImagesReference = FirebaseStorage.getInstance().getReference();
PostsRef = FirebaseDatabase.getInstance().getReference().child("Posts");
如果需要，这是我的整个代码：
private Toolbar mToolbar;
private ProgressDialog loadingBar;
private ImageButton SelectPostImage;
private Button AddPostButton;
private EditText PostDescription;
private static final int Gallery_Pick = 1;
private Uri ImageUri;
private StorageReference PostsImagesReference;
private DatabaseReference PostsRef;
private FirebaseAuth mAuth;
private String Description;
private String saveCurrentDate;
private String saveCurrentTime;
private String postRandomName;
private String currentUserID;
//private String downloadUrl;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_post);
mAuth = FirebaseAuth.getInstance();
currentUserID = mAuth.getCurrentUser().getUid();
PostsImagesReference = FirebaseStorage.getInstance().getReference();
PostsRef = FirebaseDatabase.getInstance().getReference().child("Posts");
SelectPostImage = (ImageButton) findViewById(R.id.select_post_image);
AddPostButton = (Button) findViewById(R.id.add_post);
PostDescription = (EditText) findViewById(R.id.post_description);
loadingBar = new ProgressDialog(this);
mToolbar = (Toolbar) findViewById(R.id.update_post_page_toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setTitle("Update Post");
SelectPostImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
OpenGallery();
}
});
AddPostButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
ValidatePostInfo();
}
});
}
private void ValidatePostInfo()
{
Description = PostDescription.getText().toString();
if(ImageUri == null)
{
Toast.makeText(this, "Please select image", Toast.LENGTH_SHORT).show();
}
else if(TextUtils.isEmpty(Description))
{
Toast.makeText(this, "Please say something about your image", Toast.LENGTH_SHORT).show();
}
else
{
loadingBar.setTitle("Post Uploading");
loadingBar.setMessage("Please Wait");
loadingBar.show();
loadingBar.setCanceledOnTouchOutside(true);
StoringImageToFirebaseStorage();
}
}
private void StoringTextToFirebaseStorage(Uri downloadUrl)
{
Calendar callForDate = Calendar.getInstance();
SimpleDateFormat currentDate = new SimpleDateFormat("dd-MMMM-yyyy");
saveCurrentDate = currentDate.format(callForDate.getTime());
Calendar callForTime = Calendar.getInstance();
SimpleDateFormat currentTime = new SimpleDateFormat("HH:mm:ss");
saveCurrentTime = currentTime.format(callForDate.getTime());
postRandomName = saveCurrentDate + saveCurrentTime;
HashMap postsMap = new HashMap();
postsMap.put("uid", currentUserID);
postsMap.put("date", saveCurrentDate);
postsMap.put("time", saveCurrentTime);
postsMap.put("description", Description);
postsMap.put("image", downloadUrl.toString());
PostsRef.child(currentUserID + postRandomName).updateChildren(postsMap)
.addOnCompleteListener(new OnCompleteListener()
{
@Override
public void onComplete(@NonNull Task task)
{
if (task.isSuccessful())
{
SendUserToMainActivity();
Toast.makeText(PostActivity.this, "Post Uploaded", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
else
{
String message = task.getException().getMessage();
Toast.makeText(PostActivity.this, "Error Occurred: " + message, Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
private void StoringImageToFirebaseStorage()
{
Calendar callForDate = Calendar.getInstance();
SimpleDateFormat currentDate = new SimpleDateFormat("dd-MMMM-yyyy");
saveCurrentDate = currentDate.format(callForDate.getTime());
Calendar callForTime = Calendar.getInstance();
SimpleDateFormat currentTime = new SimpleDateFormat("HH:mm:ss");
saveCurrentTime = currentTime.format(callForTime.getTime());
postRandomName = saveCurrentDate + saveCurrentTime;
final StorageReference filePath = PostsImagesReference.child("Post Images").child(ImageUri.getLastPathSegment() + postRandomName + ".jpg");
filePath.putFile(ImageUri).addOnCompleteListener(new OnCompleteListener<UploadTask.TaskSnapshot>() {
@Override
public void onComplete(@NonNull Task<UploadTask.TaskSnapshot> task)
{
if (task.isSuccessful())
{
SendUserToMainActivity();
PostsImagesReference.child("Post Images").getDownloadUrl().addOnSuccessListener(new OnSuccessListener<Uri>()
{
@Override
public void onSuccess(Uri uri)
{
StoringTextToFirebaseStorage(uri);
}
}).addOnFailureListener(new OnFailureListener()
{
@Override
public void onFailure(@NonNull Exception exception) {
// Handle any errors
}
});
Toast.makeText(PostActivity.this, "Post Uploaded", Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
else
{
String message = task.getException().getMessage();
Toast.makeText(PostActivity.this, "Error Occurred: " + message, Toast.LENGTH_SHORT).show();
loadingBar.dismiss();
}
}
});
}
private void OpenGallery()
{
Intent galleryIntent = new Intent();
galleryIntent.setAction(Intent.ACTION_GET_CONTENT);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, Gallery_Pick);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if (requestCode==Gallery_Pick && resultCode==RESULT_OK && data!=null)
{
ImageUri = data.getData();
SelectPostImage.setImageURI(ImageUri);
}
}
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item)
{
int id = item.getItemId();
if(id == android.R.id.home)
{
SendUserToMainActivity();
}
return super.onOptionsItemSelected(item);
}
private void SendUserToMainActivity()
{
Intent mainIntent = new Intent(PostActivity.this, MainActivity.class);
startActivity(mainIntent);
}
}
错误消息:
2020-06-02 13:54:22.594 3466-5776/com.example.app E/StorageException: StorageException has occurred.
Object does not exist at location.
Code: -13010 HttpResult: 404
2020-06-02 13:54:22.594 3466-5776/com.example。app E/StorageException:{“错误”：{“代码”：404，“消息”：“找不到。无法获取对象”，“状态”：“get_object”}}java.io。IOException:{“error”：{“code”：404，“message”：“Not Found.Could Not get object”，“status”：“get_object”}}，位于com.google.firebase.storage.network.NetworkRequest.parseResponse（com.gooleg.firebase:firebase-storage@@17.0.0:455），位于位于com.google.firebase.storage.network.NetworkRequest.processResponseStream（com.gooleg.firebase:firebase-storage@@17.0.0:426com.google.firebase.storage.internal.IxponentialBackoffSender.sendWithExponentialBackup（com.goole.firebasce:firebase-storage@@17.0.0:70）位于com.googel.firebase.rtorage.intral.ExponentialBackoffSender.sendWIthExponentionalBackoff（com.gougle.firefase:firebasure-storage@17.0.0:62java.lang.Thread.run（Thread.java:919）2020-06-02 13:54:22.602 3466-3466/com.example上java.util.concurrent.ThreadPoolExecutor$Worker.run处的java.util.concurrent。ThreadPool执行器.runWorker（ThreadPoolExecutor java:1167）。app E/RecyclerView：未连接布局管理器；跳过布局
共有1个答案
您正在尝试获取``文件夹的下载URL，这是不可能的:
PostsImagesReference.child("Post Images").getDownloadUrl().addOnSuccessListener(...
您需要在上调用putFile的StorageReference上调用getDownloadUrl（）：
filePath.getDownloadUrl().addOnSuccessListener(...
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