从数据库中读出图片并显示的示例代码

从数据库中读出图片并显示的示例代码

< !-- -- -- --Servlet-- -- -- -- -->
import Javax.servlet.*;
import java.io.*;
import java.lang.*;

/**
Title:

Description:

Copyright: Copyright (c) 2002

Company:

* @version 1.0

public class ShowImage extends HttpServlet {
/**
*/
private String connect_string =
Connection conn = null;
Statement stmt = null;
* 定义应用变量
private String SQLString = ""; //定义查询语句""r
private InputStream in = null; //定义输入流""r

//Initialize global variables
/**
*/
Class.forName(driver_class);
//异常
}
//Process the HTTP Get request
throws ServletException, IOException {
PrintWriter out = response.getWriter();
int PHOTOID = 0;
* 接受上文传递的图片ID号
*********************************************/

PHOTOID = Integer.parseInt(request.getParameter("photoid"));

} catch (Exception e) {
response.setContentType("text/html; charset=gb2312");
M_EorrMenage =
out.println("