我正在尝试使用 Retrofit 2.0 将Pdf文件上传到服务器，并将其路径存储到我的MySQL数据库中。我成功地存储了路径，但是应该存储在我的主目录中的pdf已损坏。
upload.php的
<?php
require "init.php";
if($con)
{
$title=$_POST['title'];
$pdf=$_POST['pdf'];
//Getting the server ip
$server_ip = gethostbyname(gethostname());
$upload_path="uploads/$title.pdf";
$upload_url = 'http://'.$server_ip.'/pdfupload1/'.$upload_path;
$sql="insert into pdfinfo1(title,path) values('$title','$upload_url');";
if(mysqli_query($con,$sql))
{
file_put_contents($upload_path,$pdf);
echo json_encode(array('response'=>"Pdf Uploaded Successfully"));
}
else
{
echo json_encode(array('response'=>"Pdf Upload Failed"));
}
mysqli_close($con);
}
?>
ApiClient.java
public class ApiClient
{
private static final String BaseUrl="http://10.0.2.2/pdfupload1/";
private static Retrofit retrofit;
public static Retrofit getApiClient()
{
if(retrofit==null)
{
retrofit=new Retrofit.Builder().baseUrl(BaseUrl).addConverterFactory(GsonConverterFactory.create()).build();
}
return retrofit;
}
}
ApiInterface.java
public interface ApiInterface
{
@Multipart
@POST("upload.php")
Call<PdfClass> PdfUploadFunction (@Part("title") RequestBody title, @Part("pdf") RequestBody image);
}
PdfClass.java
public class PdfClass
{
//This is a Model Class Retrofit
@SerializedName("title")
private String Title;
@SerializedName("pdf")
private String Pdf;
@SerializedName("response")
private String Response;
public String getResponse() {
return Response;
}
}
FilePath.java
public class FilePath {
/**
* Method for return file path of Gallery image
*
* @param context
* @param uri
* @return path of the selected image file from gallery
*/
public static String getPath(final Context context, final Uri uri)
{
//check here to KITKAT or new version
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
}
//DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[] {
split[1]
};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @param selection (Optional) Filter used in the query.
* @param selectionArgs (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
public static String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {
column
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
}
FirstActivity.java
public class FirstActivity extends AppCompatActivity {
Button button1,button2;
EditText imagename;
ImageView imageView;
private static final int PDF_REQUEST=777;
private Bitmap bitmap;
public int PDF_REQ_CODE = 1;
String PdfNameHolder, PdfPathHolder, PdfID;
Uri uri;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first);
button1=(Button)findViewById(R.id.button);
button2=(Button)findViewById(R.id.button2);
imagename=(EditText)findViewById(R.id.editText1);
//imageView=(ImageViewfindViewById(R.id.imageView1);
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//selectImage();
selectPdf();
}
});
button2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// uploadImage();
PdfUploadFunction();
}
});
}
private void selectPdf()
{
Intent intent = new Intent();
intent.setType("application/pdf");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Pdf"), PDF_REQ_CODE);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PDF_REQ_CODE && resultCode == RESULT_OK && data != null && data.getData() != null) {
uri = data.getData();
}
}
public void PdfUploadFunction() {
PdfNameHolder = imagename.getText().toString();
PdfPathHolder = FilePath.getPath(this, uri);
//File file=new File(uri.getPath());
RequestBody Title=RequestBody.create(MediaType.parse("text/plain"),imagename.getText().toString());
RequestBody Pdf=RequestBody.create(MediaType.parse("application/pdf"), PdfPathHolder);
ApiInterface apiInterface=ApiClient.getApiClient().create(ApiInterface.class);
Call<PdfClass> call=apiInterface.PdfUploadFunction(Title,Pdf);
call.enqueue(new Callback<PdfClass>() {
@Override
public void onResponse(Call<PdfClass> call, Response<PdfClass> response) {
PdfClass pdfClass=response.body();
Toast.makeText(getApplicationContext(),"Server Response: "+pdfClass.getResponse(),Toast.LENGTH_LONG).show();
}
@Override
public void onFailure(Call<PdfClass> call, Throwable t) {
}
});
}
public void AllowRunTimePermission(){
if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_EXTERNAL_STORAGE))
{
Toast.makeText(this,"READ_EXTERNAL_STORAGE permission Access Dialog", Toast.LENGTH_LONG).show();
} else {
ActivityCompat.requestPermissions(this,new String[]{ Manifest.permission.READ_EXTERNAL_STORAGE}, 1);
}
}
@Override
public void onRequestPermissionsResult(int RC, String per[], int[] Result) {
switch (RC) {
case 1:
if (Result.length > 0 && Result[0] == PackageManager.PERMISSION_GRANTED) {
Toast.makeText(this,"Permission Granted", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this,"Permission Canceled", Toast.LENGTH_LONG).show();
}
break;
}
}
}
提前感谢您的帮助..
答案 0 :(得分：2)
在PdfUploadFunction()将文件附加到RequestBody pdf时，调用文件的路径而不是实际文件。
修改为
RequestBody Pdf=RequestBody.create(MediaType.parse("application/pdf"), new File(PdfPathHolder))
FilePath课程，没有谢谢。 需要我的代码才能工作。
另请考虑在Retrofit getApiClient()中添加呼叫超时，因为根据文件大小，呼叫可能会导致TimeOut失败。
修改为
public static Retrofit getApiClient(){
if(retrofit==null){
retrofit=new Retrofit.Builder()
.baseUrl(BaseUrl)
.addConverterFactory(GsonConverterFactory.create())
.client(new OkHttpClient().newBuilder()
.connectTimeout(20, TimeUnit.SECONDS)
.readTimeout(10, TimeUnit.SECONDS)
.writeTimeout(10, TimeUnit.SECONDS)
.build())
.build();
}
return retrofit;
}
答案 1 :(得分：0)
有点晚了， 但我认为你 要做这样的改变
String PDFPATH = FilePath.getPath(MainActivity.this,uri);
File file = new File(PDFPATH);
String namepdf = "newpdf";
pdfname.setText(file.getName());
RequestBody Title = RequestBody.create(MediaType.parse("text/plain"),namepdf);
RequestBody PDFreq = RequestBody.create(MediaType.parse("application/pdf"),file.getName());
//MultipartBody.Part PDF = MultipartBody.Part.createFormData("pdf",file.getName(),PDFreq);
APIInterface apiInterface=ApiClient.getApiClient().create(APIInterface.class);
Call<PdfClass> call=apiInterface.PdfUploadFunction(Title,PDFreq);
在PDFreq =添加file.getname（）而不是新文件（pdfpath），它将显示在您的数据库pdf中，我们需要pdf路径并将其存储在我们的服务器中，因此 进行这个小的更改，您就可以开始了...