showimg.java

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package com.laoer.bbscs.servlet;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import com.laoer.bbscs.sysinfo.*;

/**
 * <p>Title: 天乙社区V5.0</p>
 * <p>Description: BBS-CS天乙社区V5.0</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: laoer.com</p>
 * @author 龚天乙
 * @version 5.0
 */

public class ShowImg
    extends HttpServlet {

  private static final String CONTENT_TYPE = "text/html; charset=UTF-8";
  //Initialize global variables
  public void init() throws ServletException {
  }

  //Process the HTTP Get request
  public void doGet(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    String picdir = request.getParameter("picdir");
    if (picdir == null) {
      picdir = "";
    }
    picdir = Sys.SYSINFO.FILEPATH + picdir;

    response.setContentType(CONTENT_TYPE);
    //PrintWriter out = response.getWriter();
    //File fdir = new File(picdir);
    //if (!fdir.exists()) {

    //}
    FileInputStream fis = null;
    ServletOutputStream sos = null;
    try {
      response.setContentType("image/jpeg");
      fis = new FileInputStream(picdir);
      sos = response.getOutputStream();
      byte[] bytes = new byte[1024];
      while (true) {
        int len = fis.read(bytes, 0, 1024);
        if (len != -1) {
          sos.write(bytes, 0, len);
        }
        else {
          break;
        }
      }
    }
    catch (Exception e) {}
    finally {
      try {
        if (fis != null) {
          fis.close();
        }
        if (sos != null) {
          sos.close();
        }
      }
      catch (Exception e) {}
    }
  }

  //Process the HTTP Post request
  public void doPost(HttpServletRequest request, HttpServletResponse response) throws
      ServletException, IOException {
    doGet(request, response);
  }

  //Clean up resources
  public void destroy() {
  }
}