how to read xlsx file

# Region: determines whether a file exists. If the file does not exist, it is created. Otherwise, the read value is displayed in the form. PublicFormmain () { Initializecomponent (); // Readfile (application. startuppath + "// alarmset.txt "); // Determine whether a file exists // System. Io. directoryinfo

First, the conclusion:File r+ Open:1. Write () cannot implement insert write, it always overwrites write or append write;2. If the file is open as write (), overwrite the write from the beginning;3. If the file is open, use F.seek () to specify the position of the file pointer, and then execute F.write () to write from the pointer position (overwrite write);4. If

On the internet to see a lot of examples, the result is very disappointing, so decided to write an example, to provide you with reference to study; no more nonsense. See examples directly: Package com.em.test.client; Import Java.io.BufferedOutputStream; Import Java.io.File; Import java.io.FileNotFoundException; Import Java.io.FileOutputStream; Import java.io.IOException; Import Java.io.InputStream; Import java.util.Enumeration; Import Java.util.zip.ZipEntry; Import Java.util.zip.ZipFile; /

One, read the file First explain what is reading the file itself, what is called reading the file input. For example test.php inside the content 1, read the file itself is to read al

The following is a simple understanding of their own, as a reminder of the journal, so write more confusing. If you understand something wrong, please help me correct it.Flume-ng does not have before the real-time stream source to the file, only provides the Spooldir source, this source function monitors the specified folder, the files placed in the folder can no longer make any changes (including the modification time and

(329, 10, 10), new leading (142, 12, 12); setsize (501,240);} private jbutton getjbutton2 () {If (jbutton2 = NULL) {jbutton2 = new jbutton (); jbutton2.settext ("(image time) save as "); jbutton2.addactionlistener (New actionlistener () {Public void actionreceivmed (actionevent event) {try {jbutton2actionreceivmed (event);} catch (ioexception e) {// todo auto-generated catch blocke. printstacktrace () ;}});} return jbutton2;} private jbutton getjbutton1 () {If (jbutton1 = NULL) {jbutton1 = new

Error about using file () to read the entire file with an exception to break the error! I am now using PHP 4.03pl1 to read the entire file using file () when manipulating the text data file