如何用jsp实现文件上载的问题？__mySmartUpload_fileName_java_String_import_

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如何用jsp实现文件上载的问题？

来源: 互联网发布时间：2017-03-30

本文导语: 如何实现上载呢？上载后的文件是放在数据库里，还是存成文件呢？ | Untitled Document | import java.sql.*; import java.io.*; import java.util.*; import javax.servlet.*; import javax.servlet.http.*; import...

如何实现上载呢？上载后的文件是放在数据库里，还是存成文件呢？

Untitled Document

import java.sql.*;
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import com.jspsmart.upload.*;
/**
*

Title:

Description:

Company:

* @author not attributable
* @version 1.0
*/

public class UpLoad extends HttpServlet{
    public UpLoad() {
    }
    private ServletConfig config;
    /**
    * Init the servlet
    */
    final public void init(ServletConfig config) throws ServletException {
            this.config = config;
    }

    final public ServletConfig getServletConfig() {
            return config;
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
        doPost(request,response);
    }
    public void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
        System.out.println("============UpLoad begin ddd=============");
        String id=null;
        SmartUpload mySmartUpload = new SmartUpload();
        PrintWriter out = response.getWriter();
        try  {
            Class.forName("oracle.jdbc.driver.OracleDriver");
        }catch(java.lang.ClassNotFoundException  e)  {
            System.err.print("ClassNotFoundException: "+e.getMessage());
        }

        try{
            //Class.forName("oracle.jdbc.driver.OracleDriver");
            Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@10.216.0.2:1521:ORCL","dms","dms");

            conn.setAutoCommit(false);//关闭自动提交，以提高性能。
            Statement stmt=conn.createStatement();
            // Initialization
            mySmartUpload.initialize(config, request, response);

            mySmartUpload.setMaxFileSize(500 * 1024);

            // Upload
            mySmartUpload.upload();

            Enumeration enumer=mySmartUpload.getRequest().getParameterNames();
            while(enumer.hasMoreElements()){
                String key=(String) enumer.nextElement();
                String[] values=mySmartUpload.getRequest().getParameterValues(key);
                if(key.equals("id")){ //得到各个的内容
                    id=values[0];
                }
            }

            //取得文件和文件名
            com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
            String fileName=myFile.getFileName();

            if(!myFile.isMissing()){
                //save data
                //myFile.saveAs("/upload/" + fileName);
                //mySmartUpload.save("/upload/" + fileName);
                myFile.saveAs(fileName,mySmartUpload.SAVE_PHYSICAL);
                System.out.println
java.io.File file=new java.io.File(fileName);
java.io.InputStream inStream=new java.io.FileInputStream(file);

                int fileSize=myFile.getSize();
                byte[] bytes = new byte[fileSize];
String strSql="insert into zyw_test(id,name,content) values('"+id+"','"+fileName+"',empty_blob())";
               stmt.execute(strSql);

               ResultSet rs=stmt.executeQuery("select content from zyw_test where id='"+id+"' for update ");
               if (rs.next()){
                   oracle.sql.BLOB blob = ((oracle.jdbc.OracleResultSet)rs).getBLOB("content");
                   OutputStream outStream = blob.getBinaryOutputStream();
                   inStream.read(bytes);
                   for(int i = 0; i