JSP read file instance _jsp programming

Variable declaration
Java.lang.String strFileName; Filename
Java.io.File objfile; File objects
Java.io.FileReader Objfilereader; Read File objects
char[] Chrbuffer = new CHAR[10]; Buffer
int intlength; The number of characters actually read (one character in Chinese)



Set the file name to read
strFileName = "D:\\test.txt";



Create a File object
objfile = new Java.io.File (strFileName);



To determine whether a file exists
if (objfile.exists ()) {//File exists
Create a read file object
Objfilereader = new Java.io.FileReader (objfile);



Read the contents of the file
while ((Intlength=objfilereader.read (Chrbuffer))!=-1) {
Output
Out.write (chrbuffer,0,intlength);
}



Close the Read file object
Objfilereader.close ();
}
else{//file does not exist
Out.println ("The following file does not exist:" +strfilename);
}