Question

我正在执行一项任务，我想在oracle数据库中上传excel数据，但是当我尝试运行代码并在上传.xls文件后，它给我的文件找不到异常D：\ GODBFILES \ NETBEANS PROJECTS \ NetBeansProjects \ TestWebApplication \ build \ web \ null（系统找不到指定的文件），我关心的是从任何位置文件应该在db上传我更新了fileinputstream中的代码我写的硬编码路径和文件名但我不希望这个文件路径和文件名应该动态获取并存储在文件

使用以下jar

上传文件i

公地文件上传-1.3.jar，公地IO-2.4.jar， POI-3.9.jar， cos.jar， POI-OOXML-3.9.xml

<html>
    <head>
        <title>TODO supply a title</title>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
    </head>
    <body>
        <form id="f1" enctype="multipart/form-data" action="xlsUpload_01.jsp" method="post">
            <table align="center" border="1">
                <tr>
                    <td>Enter File name</td>
                    <td><input type="text" name="id"></td>

                </tr>
                <tr>
                    <td>Select File</td>
                     <td><input type="file"  name="xlsfile" />
                </tr>

            </table>
            <p>
            <center>
                <input align="center" type="submit" value="Upload File" name="btnsubmit"/>
            </center>

            </p>
        </form>
    </body>
</html>

xlsupload_01.jsp

    <%@ page language="java" contentType="text/html; charset=UTF-8"
            pageEncoding="UTF-8"%>
         <%@page import="java.sql.*" %>
        <%@page import ="java.util.Date" %>  
        <%@page import ="java.io.*" %>  
        <%@page import ="java.io.FileNotFoundException" %>  
        <%@page import ="java.io.IOException" %>  
        <%@page import ="java.util.Iterator" %>  
        <%@page import ="java.util.ArrayList" %> 
        <%@page import="org.apache.poi.hssf.usermodel.*" %>
        <%@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="org.apache.poi.ss.usermodel.Cell" %>
        <%@page import ="org.apache.poi.ss.usermodel.Row"%>
        <%@page import="org.apache.poi.ss.usermodel.Sheet" %>
        <%@page import="org.apache.poi.ss.usermodel.Workbook" %>
        <%@page import="com.oreilly.servlet.MultipartRequest" %>
        <%@page import="org.apache.poi.xssf.usermodel.*"%>
        <%@page import="org.apache.poi.xssf.usermodel.XSSFWorkbook"%>

         <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <!DOCTYPE html>
    <html>
        <head>
            <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
            <title>JSP Page</title>
        </head>
        <body>
      <%

     ArrayList CellArrayListHolder=new ArrayList();
     Class.forName("oracle.jdbc.driver.OracleDriver");
            Connection con=DriverManager.getConnection("jdbc:oracle:thin:@172.18.114.213:1821:xe","se","Spacess");


 **FileInputStream file=new FileInputStream(new File("D:\\GODBFILES\\NETBEANS PROJECTS\\upload\\hello.xlsx"));
XSSFWorkbook workbook=new XSSFWorkbook(file);**

    Sheet firstSheet=workbook.getSheetAt(0);
    Iterator<Row> iterator=firstSheet.iterator();
    int count=0;
    while(iterator.hasNext())
    {
        XSSFRow nextrow=(XSSFRow)iterator.next();
        ArrayList rowarraylist=new ArrayList();
        Iterator<Cell> cellIterator=nextrow.cellIterator();

        while(cellIterator.hasNext())
        {
            XSSFCell cell=(XSSFCell)cellIterator.next();
            rowarraylist.add(cell);
        }
        CellArrayListHolder.add(rowarraylist);
    }
           out.println(CellArrayListHolder);
           ArrayList rowarraylist=null;
           PreparedStatement st=con.prepareStatement("insert into DYNAMIC_INSERT values(?)");

    for(int i=1;i<CellArrayListHolder.size();i++)
    {
        rowarraylist=(ArrayList)CellArrayListHolder.get(i);
        st.setString(1, rowarraylist.get(0).toString());
        //st.executeUpdate();
        count=st.executeUpdate();

    }
    if(count>0)
    {
           out.println("<script type=\"text/javascript\">");
       out.println("alert('File added');");
       out.println("</script>");    
    }




      %>
        </body>
    </html>

Answer 1

我在这里得到了解决方案

 <%@page import="java.util.List"%>
<%@page import="org.apache.commons.fileupload.FileItem"%>
<%@page import="org.omg.PortableServer.Servant"%>
<%@page import="org.apache.commons.fileupload.FileItemFactory"%>
<%@page import="java.nio.file.Paths"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
     <%@page import="java.sql.*" %>
    <%@page import ="java.util.Date" %>  
    <%@page import ="java.io.*" %>  
    <%@page import ="java.io.FileNotFoundException" %>  
    <%@page import ="java.io.IOException" %>  
    <%@page import ="java.util.Iterator" %>  
    <%@page import ="java.util.ArrayList" %> 
    <%@page import="org.apache.poi.hssf.usermodel.*" %>
    <%@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="org.apache.poi.ss.usermodel.Cell" %>
    <%@page import ="org.apache.poi.ss.usermodel.Row"%>
    <%@page import="org.apache.poi.ss.usermodel.Sheet" %>
    <%@page import="org.apache.poi.ss.usermodel.Workbook" %>
    <%@page import="com.oreilly.servlet.MultipartRequest" %>
    <%@page import="org.apache.poi.xssf.usermodel.*"%>
    <%@page import="org.apache.poi.xssf.usermodel.XSSFWorkbook"%>
    <%@page import="org.apache.commons.fileupload.disk.DiskFileItemFactory"%>
<%@page import="org.apache.commons.fileupload.servlet.ServletFileUpload"%>


     <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
  <%

    try
    {
 ArrayList CellArrayListHolder=new ArrayList();
 Class.forName("oracle.jdbc.driver.OracleDriver");
        Connection con=DriverManager.getConnection("jdbc:oracle:thin:@172.18.114.213:1871:godb","xe","se");
      String contentType = request.getContentType();
if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) {
DataInputStream in = new DataInputStream(request.getInputStream());
int formDataLength = request.getContentLength();
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
while (totalBytesRead < formDataLength) {
byteRead = in.read(dataBytes, totalBytesRead,formDataLength);
totalBytesRead += byteRead;
}
String file = new String(dataBytes);
String saveFile = file.substring(file.indexOf("filename=\"") + 10);
saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1,saveFile.indexOf("\""));
out.println(saveFile);
int lastIndex = contentType.lastIndexOf("=");
String boundary = contentType.substring(lastIndex + 1,contentType.length());
int pos;
pos = file.indexOf("filename=\"");
pos = file.indexOf("\n", pos) + 1;
pos = file.indexOf("\n", pos) + 1;
pos = file.indexOf("\n", pos) + 1;
int boundaryLocation = file.indexOf(boundary, pos) - 4;
int startPos = ((file.substring(0, pos)).getBytes()).length;
int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;

FileOutputStream fileOut = new FileOutputStream(saveFile);
fileOut.write(dataBytes, startPos, (endPos - startPos));
fileOut.flush();
fileOut.close();

%>
<%

PreparedStatement psmnt = null;
FileInputStream fis;
//try {
//Class.forName("com.mysql.jdbc.Driver").newInstance();
//connection = DriverManager.getConnection(connectionURL, "root", "root");
File file1 = new File(saveFile);
FileInputStream file_inut=new FileInputStream(file1);
XSSFWorkbook workbook=new XSSFWorkbook(file_inut);
Sheet firstsheet=workbook.getSheetAt(0);
Iterator<Row> iterator=firstsheet.iterator();
int count=0;
while(iterator.hasNext())
{
   XSSFRow nextrow=(XSSFRow)iterator.next();
    ArrayList rowarraylist=new ArrayList();
    Iterator<Cell> cellIterator=nextrow.cellIterator();

    while(cellIterator.hasNext())
    {
        XSSFCell cell=(XSSFCell)cellIterator.next();
        rowarraylist.add(cell);
    }
    CellArrayListHolder.add(rowarraylist);
}
       out.println(CellArrayListHolder);
       ArrayList rowarraylist=null;
       PreparedStatement st=con.prepareStatement("insert into DYNAMIC_INSERT values(?)");

for(int i=1;i<CellArrayListHolder.size();i++)
{
    rowarraylist=(ArrayList)CellArrayListHolder.get(i);
     //st.setString(1, file_name);
    st.setString(1, rowarraylist.get(0).toString());
    //st.executeUpdate();
    count=st.executeUpdate();

}
if(count>0)
{
       out.println("<script type=\"text/javascript\">");
   out.println("alert('File added');");
      out.println("location='xlsUpload.html';");
   out.println("</script>");    
}
}
}
catch(Exception ex)
{
 out.println("<script type=\"text/javascript\">");
   out.println("alert('File not found');");
      out.println("location='xlsUpload.html';");
   out.println("</script>");    

}


  %>
    </body>
</html>

java.io.FileNotFoundException显示何时尝试上传数据库

1 个答案: