An example of a spring upload file file,

/**

*  Class Name: Uploadtest class Description: created by: Zhang Created: March 13, 2015 4:20:57 person modified: Zhang

* Modified: March 13, 2015 4:20:57 Modify notes:
*
* @version
*
*/
@Controller
Public class Uploadtest {
@RequestMapping (value = "Upfile", method = Requestmethod.post)
Public void Upfile (@RequestParam ("name") String name,
@RequestParam ("file") multipartfile file, HttpServletRequest request) {
String dir = null;
if (!file.isempty ()) {
ServletContext sc = request.getsession (). Getservletcontext ();//Get the path to the project
dir = Sc.getrealpath ("/upload");//Set file to save directory
//

SaveFile01 (file, dir);
SaveFile (file, dir);
}

Testinputtostring (dir);
Testinputsream (dir);

}

/**
* Save upload file Spring format multipartfile with Multipartfile inside the Transferto method
*
* @param file
* @param dir
*/
private void SaveFile01 (multipartfile file, String dir) {
String filename = File.getoriginalfilename (); Get the file name when uploading

File TargetFile = new file (dir, filename);

if (!targetfile.exists ()) {
Targetfile.mkdirs ();

}

try {
File.transferto (targetfile);
} catch (Exception e) {

}
System.out.println ("Upload over." + filename);
}

/**
* @param file
* @param dir
* Store Multipartfile types of files with Dataoutpuestream,
*/
private void SaveFile (multipartfile file, String dir) {
/*************************************/
DataInputStream is = null;
FileOutputStream fos = null;
try {
InputStream in = File.getinputstream ();
is = new DataInputStream (in);
} catch (IOException e) {
//TODO auto-generated catch block
e.printstacktrace ();
}
file fil = new file (dir, File.getoriginalfilename ());
if (!fil.exists ()) {//If file does not exist, create file
fil.mkdirs ();
}
try {
fos = new FileOutputStream (fil);

dataoutputstream dos = new DataOutputStream (FOS);
int data1;
stringbuffer buffer = new StringBuffer ();
while ((data1 = Is.read (by))! =-1) {

buffer.append (data1);
//printstream.write (data1);
}
" catch (Exception e) {
" Span style= "FONT-SIZE:14PT;" >//TODO auto-generated Catch block
e.printstacktrace ();
finally {
try {
if (is! = null) {

Is.close ();
}
if (fos! = null) {
Fos.close ();

}
} catch (IOException e) {
TODO auto-generated Catch block
E.printstacktrace ();
}
}
/*************************************/
}

/**
* read out the output stream of the file and convert it to a character type to print out
*/

private void Testinputtostring (String dir) {
bufferedreader br = null;
fileinputstream FIP = null;
inputstreamreader ISR = null;
try {
FIP = new FileInputStream (new File (dir + "/new text document. txt"));

string str;
/*
* use ReadLine to print text
*/
ISR = new InputStreamReader (FIP);//Turn bytes into a character stream
BR = new BufferedReader (ISR);//use a character stream buffer to increase efficiency
while ((str = Br.readline ())! = null) {
system.out.println (str);

"catch (Exception e) {
//TODO Auto-generated Catch block
e.printstacktrace ();
finally {
if (BR! = null) {
try {
isr.close ();
br.close ();
"catch (IOException e) {
//TODO Auto-generated Catch block
e.printstacktrace ();
}
}
}

/*
* Use bytes to output the input stream's file Bytearrayoutputsream is an array to hold byte data is written to a byte
Array Buffers automatically grow as data is written continuously
*/
public void Testinputsream (String dir) {

FileInputStream FIP = null;
Bytearrayoutputstream ba = null;
DataInputStream os = null;
try {
FIP = new FileInputStream (New File (dir + "/new text document. txt"));
ba = new Bytearrayoutputstream ();
OS = new DataInputStream (FIP);
byte[] b = new byte[1024];
int rs;
While ((rs = Os.read (b))! =-1) {//reads data from the input stream into byte Group B
Ba.write (b, 0, RS);//write Method B is the data written, 0 is the offset, RS is the size of the write data
}
System.out.println (ba.tostring ());
} catch (Exception e) {
//TODO auto-generated catch block
e.printstacktrace ();
} finally {
if (BA! = null) {//closes the input stream, freeing the resource
try {
ba.close ();
os.close ();
ba.close ();
} catch (IOException e) {
//TODO auto-generated catch block
e.printstacktrace ();
}}}}}

/***************************************/

2. Configuration Files spring4-servlet.xml

<!--automatically scans the controller bean, converts the annotated class to bean--
<mvc:annotation-driven/>
<context:component-scan base-package= "Com.glass.control"/>

<!--resolution of the name of the model view, and the model view name is added before and after the request
<bean
Class= "Org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix= "/" p:suffix= ". jsp" >
<property name= "order" value= "0"/>
</bean>

<!--support uploading files--
<bean id= "Multipartresolver" class= "Org.springframework.web.multipart.commons.CommonsMultipartResolver"/>

An example of a spring upload file file,