uploadimage_jsp.java

应用泛型以及反射编写的单表操作框架

package org.apache.jsp;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.io.*;
import java.awt.Image;
import java.awt.image.*;
import com.sun.image.codec.jpeg.*;
import java.sql.*;
import com.jspsmart.upload.*;
import java.util.*;
import cn.oof.database.*;
import cn.oof.house.*;
import com.util.*;
import java.net.*;;

public final class uploadimage_jsp extends org.apache.jasper.runtime.HttpJspBase
    implements org.apache.jasper.runtime.JspSourceDependent {

  private static java.util.Vector _jspx_dependants;

  public java.util.List getDependants() {
    return _jspx_dependants;
  }

  public void _jspService(HttpServletRequest request, HttpServletResponse response)
        throws java.io.IOException, ServletException {

    JspFactory _jspxFactory = null;
    PageContext pageContext = null;
    HttpSession session = null;
    ServletContext application = null;
    ServletConfig config = null;
    JspWriter out = null;
    Object page = this;
    JspWriter _jspx_out = null;
    PageContext _jspx_page_context = null;


    try {
      _jspxFactory = JspFactory.getDefaultFactory();
      response.setContentType("text/html;charset=gb2312");
      pageContext = _jspxFactory.getPageContext(this, request, response,
      			null, true, 8192, true);
      _jspx_page_context = pageContext;
      application = pageContext.getServletContext();
      config = pageContext.getServletConfig();
      session = pageContext.getSession();
      out = pageContext.getOut();
      _jspx_out = out;

      out.write("\r\n");
      out.write("\r\n");

   SmartUpload mySmartUpload =new SmartUpload();
   long file_size_max=4000000;
   String fileName2="",ext="",testvar="";
   String url="uploadfile/"; //上传文件所需文件夹,可自行更改
   String SubPath=request.getRealPath("");
   SubPath=SubPath+"\\uploadfile";
   java.io.File createSub=new java.io.File(SubPath);
   if(!createSub.exists())
   {
       createSub.mkdir();//如果文件夹不存在，则创建
   }
   mySmartUpload.initialize(pageContext);   //初始化

	String FileListType="jpg,gif,jpeg,JPEG";//只允许上载此类文件,可自行更改 
try
{
	mySmartUpload.setAllowedFilesList(FileListType);
    //上载文件 
    mySmartUpload.upload();
} 
catch (Exception e)
{

      out.write("\r\n");
      out.write("    <SCRIPT language=javascript>\r\n");
      out.write("\t  var filelistType=\"jpg,gif,jpeg,JPEG\";\r\n");
      out.write("      alert(\"只允许上传\"+filelistType+\"类型文件\");\r\n");
      out.write("      window.location='upload.jsp';\r\n");
      out.write("\t</script>\r\n");

}
 try
 {
//循环保存文件

int count=0;
for (int i=0;i<mySmartUpload.getFiles().getCount();i++) 
{ 

	com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(i);
    if (myFile.isMissing())
	{ continue;}
    else
	{
	  count++;
      //String myFileName=myFile.getFileName(); //取得上载的文件的文件名
      ext= myFile.getFileExt();      //取得后缀名
      int file_size=myFile.getSize();     //取得文件的大小  
      String saveurl="";
      if(file_size<file_size_max)
	  {
          //更改文件名，取得当前上传时间的毫秒数值
       Calendar calendar = Calendar.getInstance();
       String filename = String.valueOf(calendar.getTimeInMillis()); 

       saveurl=request.getRealPath("/")+url;

       saveurl+=filename+"."+ext;          //保存路径
       myFile.saveAs(saveurl,mySmartUpload.SAVE_PHYSICAL);

//-----------------------上传完成，开始生成缩略图-------------------------    
       java.io.File file = new java.io.File(saveurl); //读入刚才上传的文件
       String newurl=request.getRealPath("/")+url+filename+"_min."+ext;
	   //新的缩略图保存地址
       Image src = javax.imageio.ImageIO.read(file);                     //构造Image对象
       float tagsize=150;
       int old_w=src.getWidth(null);   //得到源图宽                                  
       int old_h=src.getHeight(null);   //得到源图高
       int new_w=0;//缩略图宽
       int new_h=0;//缩略图高
       int tempsize;
       float tempdouble; 
       if(old_w>old_h)
	   {
          tempdouble=old_w/tagsize;
       }
	   else
	   {
          tempdouble=old_h/tagsize;
       }
       new_w=Math.round(old_w/tempdouble);
       new_h=Math.round(old_h/tempdouble);//计算新图长宽
       BufferedImage tag = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
       tag.getGraphics().drawImage(src,0,0,new_w,new_h,null);       //绘制缩小后的图
       FileOutputStream newimage=new FileOutputStream(newurl);          //输出到文件流
	   
       JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);       
       encoder.encode(tag);                                               //近JPEG编码
       newimage.close(); 

////////////////把数据入库/////////////////////////
	   //获取服务器IP
	   java.net.InetAddress hostIp=null,myIp=null;   
       try{   
            //hostIp =java.net.InetAddress.getHostAddress(); 
			myIp   =java.net.InetAddress.getLocalHost();
       }  
       catch(UnknownHostException e)   
       {   
            e.printStackTrace();   
            out.println("查询不到ip");   
       } 

	   String ul=filename+"."+ext;
	   String min_ul=filename+"_min."+ext;

	java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
       String dateStr = sdf.format(new java.util.Date());//格式化当前时间
       try
	   {
	        
   Connection con=DataBaseConnection.getConnection();
	           PreparedStatement pstmt=con.prepareStatement("insert into up_imges (wid_name,path,min_path,sizes,times,ip) values(?,?,?,?,?,?)");
		       pstmt.setString(1,ext);
		       pstmt.setString(2,url+ul);
		       pstmt.setString(3,url+min_ul);
		       pstmt.setInt(4,file_size);
		       pstmt.setString(5,dateStr);
		       pstmt.setString(6,myIp.toString());
			   pstmt.executeUpdate();
		 }
	     catch(Exception ee)
	     {
			 ee.printStackTrace();
			 out.println("<SCRIPT language='javascript'>alert('存入数据库失败！');window.location='upload.jsp;'</script>");
		 }
////////////////把数据入库/////////////////////////
      }
      else
      {
        out.print("<SCRIPT language='javascript'>");
        out.print("alert('上传文件大小不能超过"+(file_size_max/1000)+"K');");
        out.print("window.location='upload.jsp;'");
        out.print("</SCRIPT>");
      }
    } 
}
out.println("<SCRIPT language=javascript>alert('"+count+"个图片上传成功！');window.location='upload.jsp';</script>");
}
catch (Exception e)
{
   e.toString();
} 


      out.write(" \r\n");
      out.write("\r\n");
    } catch (Throwable t) {
      if (!(t instanceof SkipPageException)){
        out = _jspx_out;
        if (out != null && out.getBufferSize() != 0)
          out.clearBuffer();
        if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
      }
    } finally {
      if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
    }
  }
}