Java Operations Create new Excel and insert values

public class Test {
/**
* Exported CVS file
* @param exportdata the data collection to import into Excel
* @param rowmapper Excel header section
* @param where to save OutputPath Excel files
* @return Excel file
*/
@SuppressWarnings ("Rawtypes")
public static File Createcsvfile (List exportdata,linkedhashmap rowmapper,string outputPath) {
File csvfile = null;
BufferedWriter csvfileoutputstream = null;
try {
String temp= "Data Dynamic update situation comparative analysis of statistics _";
CSVFile = File.createtempfile (temp, ". csv", New File (OutputPath));
GB2312 make the delimiter read correctly ","
Csvfileoutputstream = new BufferedWriter (new OutputStreamWriter (New FileOutputStream (CSVFile), "GB2312"), 1024);
Write to file header
For (Iterator propertyiterator =rowmapper.entryset (). Iterator ();p ropertyiterator.hasnext ();) {
Java.util.Map.Entry propertyentery = (java.util.Map.Entry) propertyiterator.next ();
Csvfileoutputstream.write (Propertyentery.getvalue (). toString ());
if (Propertyiterator.hasnext ()) {
Csvfileoutputstream.write (",");
}
}
Line break
Csvfileoutputstream.newline ();
Write file contents
for (Iterator Iterator = Exportdata.iterator (); Iterator.hasnext ();) {
Object row = Iterator.next ();
for (Iterator propertyiterator = Rowmapper.entryset (). Iterator ();p ropertyiterator.hasnext ();) {
Java.util.Map.Entry propertyentry= (Java.util.Map.Entry) propertyiterator.next ();
try {
Csvfileoutputstream.write (Beanutils.getproperty (Row, string.valueof (Propertyentry.getkey ())));
if (Propertyiterator.hasnext ()) {
Csvfileoutputstream.write (",");
}
} catch (Illegalaccessexception e) {
E.printstacktrace ();
} catch (InvocationTargetException e) {
E.printstacktrace ();
} catch (Nosuchmethodexception e) {
E.printstacktrace ();
}
}
if (Iterator.hasnext ()) {
Csvfileoutputstream.newline ();
}
}
Csvfileoutputstream.flush ();

} catch (IOException e) {
E.printstacktrace ();
}
finally{
try {
Csvfileoutputstream.close ();
} catch (Exception E2) {
E2.printstacktrace ();
}
}
return csvfile;

}

/**
* Test class
* @param args
*/
@SuppressWarnings ({"Rawtypes", "Unchecked"})
public static void Main (string[] args) {
Excel header map is the table header section of Excel
Linkedhashmap map = new Linkedhashmap ();
Map.put ("1", "serial number");
Map.put ("2", "court name");
Map.put ("3", "number of competent courts");
Map.put ("4", "number of courts with data");
Map.put ("5", "Automatic aggregation of Case volume");
Map.put ("6", "Number of successful cases");
Map.put ("7", "number of failed cases in storage");
Map.put ("8", "New Day Collection");
Map.put ("9", "closed on the same day");
Map.put ("10", "court number");
Map.put ("11", "New Day Collection");
Map.put ("12", "closed on the same day");
Map.put ("13", "number of courts with data");

/**
* ExportData Excel data collection
* Note that the number of cell cells in row is consistent with the length of the header (but not mandatory)
*/
list<map> ExportData = new arraylist<map> (); Excel data collection

Map row1 = new linkedhashmap<string,string> (); For each piece of data, keep it consistent with the header (loop out, add to expordata in turn)
Row1.put ("1", "10001"); Row ("Cell's index, starting from 0", "Value stored in cell");
Row1.put ("2", "Beijing High Court");
Row1.put ("3", "2000");
Row1.put ("4", "200");
Row1.put ("5", "451");
Row1.put ("6", "45612");
Row1.put ("7", "59525");
Row1.put ("8", "8518");
Row1.put ("9", "1569");
Row1.put ("10", "235");
Row1.put ("11", "125");
Row1.put ("12", "125");
Row1.put ("13", "125");
Exportdata.add (ROW1);
Test.createcsvfile (ExportData, map, "f:/");

}
}

Java Operations Create new Excel and insert values