將數據從excel導出到mysql
[英]exporting data from excel to mysql
問題描述
我有一個Excel工作表，使用它的信息我必須導出一些細節並將其存儲在mysql表中。
我的代碼是：
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@page import="java.io.IOException"%>
<%@page import="java.sql.SQLException"%>
<%@page import="cnn.sem_year_conversion"%>
<%@page import="org.apache.poi.ss.usermodel.Row"%>
<%@page import="org.apache.poi.hssf.usermodel.HSSFCell"%>
<%@page import="org.apache.poi.hssf.usermodel.HSSFRow"%>
<%@page import="org.apache.poi.hssf.usermodel.HSSFSheet"%>
<%@page import="org.apache.poi.hssf.usermodel.HSSFWorkbook"%>
<%@page import="org.apache.poi.poifs.filesystem.POIFSFileSystem"%>
<%@page import="java.util.Iterator"%>
<%@page import="java.io.FileInputStream"%>
<%@page import="java.util.ArrayList"%>
<%@page import="java.sql.PreparedStatement"%>
<%@page import="java.sql.Connection"%>
<%@page import="cnn.cn"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<%
try
{
Connection con=cn.getcon();
PreparedStatement ps=null;
String name,f_name,branch="",enroll,status="regular",sem,elligible="";
int year= 0;
int flag;
int count=0;
con.setAutoCommit(false);
PreparedStatement pstm = null ;
FileInputStream input = new FileInputStream("C:/Users/intel/Documents/student_excel.xls");
POIFSFileSystem fs = new POIFSFileSystem( input ); //creating a new poi reference to the given excel file
HSSFWorkbook wb = new HSSFWorkbook(fs);
HSSFSheet sheet = wb.getSheetAt(0);
Row row;
for(int i=1; i<=sheet.getLastRowNum(); i++)
{
//points to the starting of excel i.e excel first row
row = (Row) sheet.getRow(i); //sheet number
if( row.getCell(1)==null) { enroll = "0";} //suppose excel cell is empty then its set to 0 the variable
else enroll = row.getCell(1).toString(); //else copies cell data to name variable
if( row.getCell(2)==null) { name = "0";} //suppose excel cell is empty then its set to 0 the variable
else name = row.getCell(2).toString(); //else copies cell data to name variable
if( row.getCell(3)==null) { f_name = "0";} //suppose excel cell is empty then its set to 0 the variable
else f_name = row.getCell(3).toString(); //else copies cell data to name variable
if( row.getCell(5)==null) { sem = "0";} //suppose excel cell is empty then its set to 0 the variable
else sem = row.getCell(5).toString(); //else copies cell data to name variable
switch (sem) {
case "1":
case "2":
year=1;
break;
case "3":
case "4":
year=2;
break;
case "5":
case "6":
year=3;
break;
case "7":
case "8":
year=4;
break;
default:year=0;
}
if( row.getCell(6)==null) { elligible="0";} //suppose excel cell is empty then its set to 0 the variable
else elligible = row.getCell(6).toString(); //else copies cell data to elligible variable
if(elligible=="Submitted to RGPV"|| elligible=="Forwarded by RGPV" )
flag=0;
else
flag=1;
if(enroll.contains("AU"))
branch="au";
else if(enroll.contains("EC"))
branch="ec";
else if(enroll.contains("CS"))
branch="cs";
else if(enroll.contains("CE"))
branch="ce";
else if(enroll.contains("IT"))
branch="it";
String query="insert into student values(?,?,0,3,?,?,?)";
ps=con.prepareStatement(query);
ps.setString(1, enroll);
ps.setString(2, name);
ps.setString(3, branch);
ps.setInt(4,year);
ps.setString(5, f_name);
ps.setString(6, status);
count=ps.executeUpdate();
}
//For checking data is inserted or not?
con.commit();
pstm.close();
con.close();
input.close();
if(count>0)
System.out.println("Successful import of excel to mysql table");
else
System.out.println("Import Failed.");
}
catch(SQLException ex){
out.println(ex);
}catch(IOException ioe)`{
out.println(ioe);
}
%>
</body>
</html>
但這會產生以下錯誤-
HTTP Status 500 - Internal Server Error
type Exception report
messageInternal Server Error
descriptionThe server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: PWC6033: Error in Javac compilation for JSP
PWC6199: Generated servlet error:
source value 1.5 is obsolete and will be removed in a future release
PWC6199: Generated servlet error:
target value 1.5 is obsolete and will be removed in a future release
PWC6199: Generated servlet error:
To suppress warnings about obsolete options, use -Xlint:-options.
PWC6197: An error occurred at line: 32 in the jsp file: /student_info.jsp
PWC6199: Generated servlet error:
strings in switch are not supported in -source 1.5
(use -source 7 or higher to enable strings in switch)
note The full stack traces of the exception and its root causes are available in the GlassFish Server Open Source Edition 4.0 logs.
GlassFish Server Open Source Edition 4.0
我在開關情況下使用String，因為在使用int時，它給出了異常-
org.apache.jasper.JasperException: java.lang.NumberFormatException: For input string: "1.0"
如何解決呢？
1 個解決方案
解決方案1
0 2015-05-10 05:52:28
我認為這應該是switch語句的例外，因為A switch可以處理byte，short，char和int原語數據類型。
在切換數據之前，請先嘗試將其轉換為整數。
使用 PHP 將數據從 MySQL 導出到 Excel
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