我试图使用Apache POI将报告导出为xlsx
格式。以下是用于的代码。无效的行号(-32768)超出允许范围(0..1048575)
public static void main(String[]args){
try{
XSSFWorkbook wb=new XSSFWorkbook();
XSSFSheet sheet = wb.createSheet("new sheet");
XSSFRow rowhead= sheet.createRow((short)0);
rowhead.createCell((short) 0).setCellValue("column1");
rowhead.createCell((short) 1).setCellValue("column2");
rowhead.createCell((short) 2).setCellValue("column3");
rowhead.createCell((short) 3).setCellValue("column4");
rowhead.createCell((short) 4).setCellValue("column5");
System.out.println("im here");
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:...,....);
Statement st=con.createStatement();
System.out.println("im here1");
ResultSet rs=st.executeQuery("SELECT * FROM table3 ");
System.out.println("im here2");
int i=1;
while(rs.next()){
XSSFRow row= sheet.createRow((short)i);
row.createCell((short) 0).setCellValue(rs.getString("column1"));
row.createCell((short) 1).setCellValue(rs.getString("column2"));
row.createCell((short) 2).setCellValue(rs.getString("column3"));
row.createCell((short) 3).setCellValue(rs.getString("column4"));
row.createCell((short) 4).setCellValue(rs.getString("column5"));
i++;
}
FileOutputStream fileOut = new FileOutputStream(new File("E:/report.xlsx"));
wb.write(fileOut);
fileOut.close();
System.out.println("Your excel file has been generated!");
} catch (Exception ex) {
System.out.println(ex);
}
总行数只有20万。但是,当处理,我收到无效的行号error.Here是输出。
im here
im here1
im here2
java.lang.IllegalArgumentException: Invalid row number (-32768) outside allowable range (0..1048575)
错误已经一去不复返了。现在'线程中的异常'主要“java.lang.OutOfMemoryError:Java堆空间” - 我有我的'JAVA_OPTS = -Xms64m -Xmx516m -XX:MaxPermSize = 1024m' – NaaN
@tailorBird增加可用内存量然后 – awksp
感谢所有。我们可以使用'SXSSF'(Streaming Usermodel API)。 – NaaN