Can anyone please explain how the Spring's Multipartfile works?
1
i've been trying to understand how the multipartfile works in spring
but did't find out any helpful info on internet.
Trying to understand this method:
public String copyUploadedImage(MultipartFile multipartFile, String realpath, int userId) throws IOException {
String orgFileName = null;
orgFileName = multipartFile.getOriginalFilename();
String fileName = null;
InputStream inputStream = null;
OutputStream outputStream = null;
if (multipartFile.getSize() > 0) {
inputStream = multipartFile.getInputStream();
String root = realpath + File.separator + userId + File.separator + "Image" + File.separator;
File file = new File(root + File.separator);
if (file.mkdirs()) {
System.out.println("Directory is created!");
} else {
System.out.println("Failed to create directory!");
}
fileName = file + File.separator + multipartFile.getOriginalFilename();
outputStream = new FileOutputStream(fileName);
int readBytes = 0;
byte buffer = new byte[10000];
while ((readBytes = inputStream.read(buffer, 0, 10000)) != -1) {
outputStream.write(buffer, 0, readBytes);
}
outputStream.flush();
outputStream.close();
inputStream.close();
}
return orgFileName;
}
java spring-mvc
asked Nov 20 at 3:58
SHAIK BAJI VALI
316
|
show 2 more comments
1
i've been trying to understand how the multipartfile works in spring
but did't find out any helpful info on internet.
Trying to understand this method:
public String copyUploadedImage(MultipartFile multipartFile, String realpath, int userId) throws IOException {
String orgFileName = null;
orgFileName = multipartFile.getOriginalFilename();
String fileName = null;
InputStream inputStream = null;
OutputStream outputStream = null;
if (multipartFile.getSize() > 0) {
inputStream = multipartFile.getInputStream();
String root = realpath + File.separator + userId + File.separator + "Image" + File.separator;
File file = new File(root + File.separator);
if (file.mkdirs()) {
System.out.println("Directory is created!");
} else {
System.out.println("Failed to create directory!");
}
fileName = file + File.separator + multipartFile.getOriginalFilename();
outputStream = new FileOutputStream(fileName);
int readBytes = 0;
byte buffer = new byte[10000];
while ((readBytes = inputStream.read(buffer, 0, 10000)) != -1) {
outputStream.write(buffer, 0, readBytes);
}
outputStream.flush();
outputStream.close();
inputStream.close();
}
return orgFileName;
}
java spring-mvc
asked Nov 20 at 3:58
SHAIK BAJI VALI
316
What exactly do you want to know? How MultipartFile works or what the method is doing (short answer: it saves an uploaded (image) file in a directory based on the givenrealpathanduserIdparameters)?
– quatax
Nov 20 at 5:50
@quatax thanks for response. I know why it is used in applications but i just want to know how it works internally to store a file into DB.
– SHAIK BAJI VALI
Nov 20 at 6:24
The file isn't stored in a database in this method. It gets written to the file system.
– quatax
Nov 20 at 6:28
@quatax ,ok but how it actually works internally?
– SHAIK BAJI VALI
Nov 20 at 6:32
So, you want to know how Java writes Bytes to the file system?
– quatax
Nov 20 at 6:42
|
show 2 more comments
1
1
1
i've been trying to understand how the multipartfile works in spring
but did't find out any helpful info on internet.
Trying to understand this method:
public String copyUploadedImage(MultipartFile multipartFile, String realpath, int userId) throws IOException {
String orgFileName = null;
orgFileName = multipartFile.getOriginalFilename();
String fileName = null;
InputStream inputStream = null;
OutputStream outputStream = null;
if (multipartFile.getSize() > 0) {
inputStream = multipartFile.getInputStream();
String root = realpath + File.separator + userId + File.separator + "Image" + File.separator;
File file = new File(root + File.separator);
if (file.mkdirs()) {
System.out.println("Directory is created!");
} else {
System.out.println("Failed to create directory!");
}
fileName = file + File.separator + multipartFile.getOriginalFilename();
outputStream = new FileOutputStream(fileName);
int readBytes = 0;
byte buffer = new byte[10000];
while ((readBytes = inputStream.read(buffer, 0, 10000)) != -1) {
outputStream.write(buffer, 0, readBytes);
}
outputStream.flush();
outputStream.close();
inputStream.close();
}
return orgFileName;
}
java spring-mvc
asked Nov 20 at 3:58
SHAIK BAJI VALI
316
i've been trying to understand how the multipartfile works in spring
but did't find out any helpful info on internet.
Trying to understand this method:
public String copyUploadedImage(MultipartFile multipartFile, String realpath, int userId) throws IOException {
String orgFileName = null;
orgFileName = multipartFile.getOriginalFilename();
String fileName = null;
InputStream inputStream = null;
OutputStream outputStream = null;
if (multipartFile.getSize() > 0) {
inputStream = multipartFile.getInputStream();
String root = realpath + File.separator + userId + File.separator + "Image" + File.separator;
File file = new File(root + File.separator);
if (file.mkdirs()) {
System.out.println("Directory is created!");
} else {
System.out.println("Failed to create directory!");
}
fileName = file + File.separator + multipartFile.getOriginalFilename();
outputStream = new FileOutputStream(fileName);
int readBytes = 0;
byte buffer = new byte[10000];
while ((readBytes = inputStream.read(buffer, 0, 10000)) != -1) {
outputStream.write(buffer, 0, readBytes);
}
outputStream.flush();
outputStream.close();
inputStream.close();
}
return orgFileName;
}
java spring-mvc
java spring-mvc
asked Nov 20 at 3:58
SHAIK BAJI VALI
316
asked Nov 20 at 3:58
SHAIK BAJI VALI
316
asked Nov 20 at 3:58
SHAIK BAJI VALI
316
asked Nov 20 at 3:58
SHAIK BAJI VALI
316
asked Nov 20 at 3:58
SHAIK BAJI VALI
316
316
What exactly do you want to know? How MultipartFile works or what the method is doing (short answer: it saves an uploaded (image) file in a directory based on the givenrealpathanduserIdparameters)?
– quatax
Nov 20 at 5:50
@quatax thanks for response. I know why it is used in applications but i just want to know how it works internally to store a file into DB.
– SHAIK BAJI VALI
Nov 20 at 6:24
The file isn't stored in a database in this method. It gets written to the file system.
– quatax
Nov 20 at 6:28
@quatax ,ok but how it actually works internally?
– SHAIK BAJI VALI
Nov 20 at 6:32
So, you want to know how Java writes Bytes to the file system?
– quatax
Nov 20 at 6:42
|
show 2 more comments
What exactly do you want to know? How MultipartFile works or what the method is doing (short answer: it saves an uploaded (image) file in a directory based on the givenrealpathanduserIdparameters)?
– quatax
Nov 20 at 5:50
@quatax thanks for response. I know why it is used in applications but i just want to know how it works internally to store a file into DB.
– SHAIK BAJI VALI
Nov 20 at 6:24
The file isn't stored in a database in this method. It gets written to the file system.
– quatax
Nov 20 at 6:28
@quatax ,ok but how it actually works internally?
– SHAIK BAJI VALI
Nov 20 at 6:32
So, you want to know how Java writes Bytes to the file system?
– quatax
Nov 20 at 6:42
What exactly do you want to know? How MultipartFile works or what the method is doing (short answer: it saves an uploaded (image) file in a directory based on the given
realpath and userId parameters)?– quatax
Nov 20 at 5:50
What exactly do you want to know? How MultipartFile works or what the method is doing (short answer: it saves an uploaded (image) file in a directory based on the given
realpath and userId parameters)?– quatax
Nov 20 at 5:50
@quatax thanks for response. I know why it is used in applications but i just want to know how it works internally to store a file into DB.
– SHAIK BAJI VALI
Nov 20 at 6:24
@quatax thanks for response. I know why it is used in applications but i just want to know how it works internally to store a file into DB.
– SHAIK BAJI VALI
Nov 20 at 6:24
The file isn't stored in a database in this method. It gets written to the file system.
– quatax
Nov 20 at 6:28
The file isn't stored in a database in this method. It gets written to the file system.
– quatax
Nov 20 at 6:28
@quatax ,ok but how it actually works internally?
– SHAIK BAJI VALI
Nov 20 at 6:32
@quatax ,ok but how it actually works internally?
– SHAIK BAJI VALI
Nov 20 at 6:32
So, you want to know how Java writes Bytes to the file system?
– quatax
Nov 20 at 6:42
So, you want to know how Java writes Bytes to the file system?
– quatax
Nov 20 at 6:42
|
show 2 more comments
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What exactly do you want to know? How MultipartFile works or what the method is doing (short answer: it saves an uploaded (image) file in a directory based on the given
realpathanduserIdparameters)?– quatax
Nov 20 at 5:50
@quatax thanks for response. I know why it is used in applications but i just want to know how it works internally to store a file into DB.
– SHAIK BAJI VALI
Nov 20 at 6:24
The file isn't stored in a database in this method. It gets written to the file system.
– quatax
Nov 20 at 6:28
@quatax ,ok but how it actually works internally?
– SHAIK BAJI VALI
Nov 20 at 6:32
So, you want to know how Java writes Bytes to the file system?
– quatax
Nov 20 at 6:42