jsp上传图片Linux报no such file or directory问题解决方法

jsp上传图片Linux报no such file or directory问题解决方法

Class.forName("Oracle.jdbc.driver.OracleDriver");
        Connection con = DriverManager.getConnection(
        "jdbc:oracle:thin:@localhost:1521:orcl", "111", "111");
        //处理事务
        con.setAutoCommit(false);
        Statement st = con.createStatement();
        //插入一个空对象
        st.executeUpdate("update cc_ac03 set picture=empty_blob() where aac002='"+idcard+"'");

        //用for update方式锁定数据行

        ResultSet rs = st.executeQuery(
        "select picture from cc_ac03 where aac002='"+idcard+"'");
        if (rs.next()) {
        //得到java.sql.Blob对象，然后Cast为oracle.sql.BLOB
        oracle.sql.BLOB blob = (oracle.sql.BLOB) rs.getBlob(1);
        //到数据库的输出流
        OutputStream outStream = blob.getBinaryOutputStream();
       
      //  ByteArrayInputStream bis=upload.getFiles().getFile(0).getContentStream();

        //这里用一个文件模拟输入流
       // File file = new File(picture);
      //  InputStream fin = new FileInputStream(file);
       
      //  SmartUpload su = new SmartUpload();
       
        //将输入流写到输出流
        byte[] b = new byte[blob.getBufferSize()];
        int len = 0;
        while ( (len = stream.read(b)) != -1) {
        outStream.write(b, 0, len);
        //blob.putBytes(1,b);
       }
        //依次关闭（注意顺序）
      //  fin.close();
        outStream.flush();
        outStream.close();
        con.commit();
        con.close();
        }

解决的心得就是一定要把流文件存入数据库，而不是存本机的东东，不然就会去读本机的东西了。其实解决非常简单，过程却是痛苦的

ByteArrayInputStream stream = upload.getFiles().getFile(0).getContentStream();这儿就已经得到流文件的值啦