[置顶] jspsmart上传图片到Tomcat

最近做的一个项目中,用到了jspsmartUpload的jar包,将图片上传到Tomcat上面,我本人也是在学习阶段,跟大家分享一下。


我们下载一个jspSmart.zip,解压后将jspsmart.jar导入到myclipse中,这里我们也可以直接下载jspSmartUpload,用它的源码也是可以的。


如图:


[置顶] jspsmart上传图片到Tomcat_第1张图片


或者是这样的:


[置顶] jspsmart上传图片到Tomcat_第2张图片


这里我用的是第二种方式:


之后,我们要写WebImage.jsp界面:


<span style="font-size:18px;"><%@ page language="java" contentType="text/html;charset=GBK" %>
<%
String strUpload="";
String strFilename="";
String strXx="";
String jgdm="";
strUpload=request.getParameter("uploadpath");
strFilename=request.getParameter("filename");
strXx=request.getParameter("xx");
jgdm=request.getParameter("jgdm");//获取机构代码
String strtext=request.getParameter("text");
if(strtext==null)strtext="0";
if(strXx==null)
{
strXx="";
}
%>
<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=GBK">
<style type="text/css">
body, a, table, div, span, td, th, input, select{font:9pt;font-family: "宋体", Verdana, Arial, Helvetica, sans-serif;}
body {padding:5px}
</style>
<script language="JavaScript" src="/UploadControl/dialog/dialog.js"></script>
<script language="JavaScript" src="/UploadControl/dialog/news.js"></script>
<BODY onLoad="InitDocument()">
<table border=0 cellpadding=0 cellspacing=0 align=center>
<tr>
    <td>
      <fieldset>
      <legend>图片上传</legend>
      <table border=0 cellpadding=0 cellspacing=0 width="100%">
        <tr>
          <td colspan=5 height=5></td>
        </tr>
        <%if(strtext.equals("1")){%>
        <tr>
          <td height=5>&nbsp;</td>
          <td height=5 align="right">图片描述:</td>
          <td height=5>&nbsp;</td>
          <td height=5><input name="d_info" type=text id="d_info" style="width:243px" value="" size=30></td>
          <td height=5>&nbsp;</td>
        </tr>        
<%}
else
{
out.print("<input type=hidden name=\"d_info\" id=\"d_info\" value=\"\">");
}%>   
        <tr>
          <td width=7></td>
          <td width=54 align=right onClick="RadioClick('file')" height="7"><input type=radio id="d_checkfromfile" value="1" onClick="RadioClick('file')"></td>
          <td width=5></td>
          <td valign="middle">
         <Script Language=JavaScript>
          document.write('<iframe id=d_file frameborder=0   src="../uploadfile.jsp?type=image&style=CoolBlue&uploadpath=<%=strUpload%>&xx=<%=strXx%>&upload=1&jgdm=<%=jgdm%>"  width="100%"  height="32" scrolling=none></iframe>');
         </Script>          </td>
          <td width=7></td>
        </tr>
        <tr>
          <td colspan=5 height=5></td>
        </tr>
        <tr style="display:none">
          <td width=7></td>
          <td width=54 align=right onClick="RadioClick('url')"><input type=radio id="d_checkfromurl" value="1" onClick="RadioClick('url')">网络:</td>
          <td width=5></td>
          <td><input name="text" type=text id="d_fromurl" style="width:243px" value="" size=30></td>
          <td width=7></td>
        </tr>
      </table>
    </fieldset></td>
</tr>
<tr><td height=5></td></tr>
<tr><td>
<table width="100%">
<tr>
<td>上传图片为jpg格式文件,分辨率200*200以上,大小不超过3M。</td>
</tr>
<tr>
  <td align="center">
<!--   <input name="submit" type=submit id=Ok onClick="ok()" value='确定'>&nbsp; -->
    <input name="button" type=button onClick="window.close();" value='取消'></td>
  </tr>
</table>
</td></tr>
</table>
<div id=divProcessing style="width:200px;height:30px;position:absolute;left:70px;top:20px;display:none">
<table border=0 cellpadding=0 cellspacing=1 bgcolor="#000000" width="100%" height="100%"><tr><td bgcolor=#3A6EA5><marquee align="middle" behavior="alternate" scrollamount="5"><font color=#FFFFFF>...图片上传中...请等待...</font></marquee></td></tr></table>
</div>
<div id=divProcessing2></div>
</body>
</html>
</span>



我们在uploadfile.jsp界面:


<span style="font-size:18px;"><%@ page language="java" contentType="text/html;charset=GBK"
    pageEncoding="GBK"
    import="java.util.*,com.jspsmart.upload.*,net.iesun.util.*" errorPage="" 
%>
<%
  String strUpload,strFilename,xx,jgdm,sl,rootdir,retfun;
  strUpload=request.getParameter("uploadpath");
  if(strUpload==null)strUpload="";
  if(strUpload.equals(""))strUpload="/upload";


  String rootpath=config.getServletContext().getRealPath("/");
  rootdir=request.getParameter("rootdir");
  rootdir="upload/advertise/";
  
  if(rootdir==null)rootdir="";
  if(rootdir.equals(""))rootdir="LOGOIMAGEPATH";
  rootdir=rootdir.toUpperCase();
  if(rootdir.equals("LOGOIMAGEPATH")||rootdir.equals("PROIMAGEPATH"))
  {
	rootpath=Ini.getDBValue(rootdir,rootpath);
   }

/*
rootdir
"ROOT" 
"LOGOIMAGEPATH" logo.jsp stock.jsp teamBuy.jsp WebImage.jsp
"PROIMAGEPATH"  upload.jsp
//Ini.getDBValue()
*/

  sl=request.getParameter("sl");
  if(sl==null)sl="0";
	
  retfun=request.getParameter("retfun");
  if(retfun==null)retfun="";

  xx=request.getParameter("xx");
  if(xx==null)xx="";

  jgdm=String.valueOf(request.getParameter("jgdm"));//获取机构代码
  if(jgdm.equals("null"))jgdm="";

  strFilename=String.valueOf(Pub.getTimeInMillis(null));
  strFilename=strFilename+xx;//文件名

  String filename="";
  String issave = request.getParameter("issave"); 
  if(issave==null)issave="0";
  if(issave.equals("1"))
  {
  filename=Images.upload(rootpath,strUpload,strFilename,pageContext);
  
  if(filename.indexOf(":")>0){
	out.println("<script language=javascript>alert('"+filename+"');parent.UploadError(\"提示:\\n\\n"+filename+"\");</script>");
  }
  else
  {

  if(sl.equals("1"))
  {
     String ext=Images.getFileExt(filename);
     String sSaveFileName=strFilename+"_sl";

     //System.out.println(sSaveFileName);
     //System.out.println(rootpath+"/"+strUpload+"/"+strFilename+"."+ext);
     //System.out.println(rootpath+"/"+strUpload+"/"+sSaveFileName+"."+ext);
     Images.ResizeImage(rootpath+"/"+strUpload+"/"+strFilename+"."+ext,rootpath+"/"+strUpload+"/"+sSaveFileName+"."+ext,800,0);
     
     filename=sSaveFileName+"."+ext;
  }

  
    if(!retfun.equals(""))
    {
	out.println("<script language=javascript>var flag = window.opener."+retfun+"('"+filename+"');window.close();</script>");
     }
     
        out.println("<script language=javascript>");
	out.print("parent.UploadSaved('");
	out.print(filename);
	out.print("');var obj=parent.dialogArguments.dialogArguments;if (!obj) obj=parent.dialogArguments;try{obj.addUploadFile('");
	out.print(filename);
	out.print("', '");
	out.print(filename);
	out.print("', '");
	out.print(strUpload);
	out.print("');} catch(e){}");
	out.println(";history.back()</script>");
     
  }	
  }
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title></title>
<script language=javascript>
function CheckUploadForm()
{
  if (document.getElementById("upfile").value=="") {
        alert('选择一个上传文件!');
        return false;
  }
  return true;
}

function check(form) {
 	document.myform.submit();
}

</script>
<style type="text/css">
body {padding:0px;margin:0px;overflow-x:hidden;overflow-y:hidden;}
</style>
<script language="JavaScript" src="dialog/dialog.js">
</script>


</head>
<body>   
    <div>
      <form name="myform" id="myform" method="post" action="/UploadControl/uploadfile.jsp?issave=1&jgdm=<%=jgdm%>&xx=<%=xx%>&uploadpath=<%=strUpload%>&sl=<%=sl%>&retfun=<%=retfun%>&rootdir=<%=rootdir%>" id="form1" enctype="multipart/form-data">
        <div class="uploaddiv">
				<input type="file" name="upfile" id="upfile" title="选择文件" style="width:170px" /><input type="submit" name="btnUpload" value="上 传" id="btnUpload" onclick="check(this.form)"/> 
<!--                 <input name="button" type=button onClick="window.close();" value='取消'></td> -->
		</div>         
     </form>
    </div>
</body>
</html></span>

文件目录:


[置顶] jspsmart上传图片到Tomcat_第3张图片


uploadfile文件会将文件提交给net.iesun.util.Images类:


<span style="font-size:18px;">package net.iesun.util;

import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.color.*;

import javax.imageio.*;
import javax.imageio.stream.*;
import javax.imageio.metadata.*;
import javax.servlet.jsp.PageContext;

import org.w3c.dom.*;

import java.awt.Rectangle;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;




import javax.servlet.http.HttpServletRequest;
import javax.servlet.jsp.PageContext;

import com.jspsmart.upload.File;
import com.jspsmart.upload.SmartUpload;

public class Images {

	public static String upload(String rootdir,String sPath,String FileName,PageContext pagecontext)
	{
		if(sPath==null)sPath="/upload";
		if(sPath.equals(""))sPath="/upload";
		if(FileName==null)FileName="";

		if(rootdir.equals(""))rootdir=pagecontext.getServletContext().getRealPath("/");
		
		String rpath=rootdir+"/"+sPath;		
		java.io.File f = new java.io.File(rpath);
		if(!f.exists())f.mkdirs();
		
		rpath=f.getPath();
		
		try {
		SmartUpload mySmartUpload = new SmartUpload();
		mySmartUpload.initialize(pagecontext);
		//mySmartUpload.initialize(config, request, response);
		mySmartUpload.setMaxFileSize(20480 * 1024);
		mySmartUpload.setAllowedFilesList("jpg,JPG,gif,GIF,png,PNG,jpeg,JPEG,bmp,BMP,tif,TIF,tiff,TIFF,swf,SWF,flv,FLV,doc,DOC,txt,TXT,xls,CLS,csv,CSV,ppt,PPT,zip,ZIP,rar,RAR");

			mySmartUpload.upload();
			File myFile = mySmartUpload.getFiles().getFile(0);
			
			if (!myFile.isMissing()) {
				if(FileName.equals(""))FileName=myFile.getFileName();
				if(FileName.equals(""))
				{
				Date currTime = new Date();
				SimpleDateFormat formatter2 = new SimpleDateFormat("yyyyMMddhhmmssSSS", Locale.US);
				FileName = new String((formatter2.format(currTime)).getBytes("iso-8859-1"));
				}
				String ext = myFile.getFileExt();
				FileName = FileName + "." + ext;				
				myFile.saveAs(rpath + "/" + FileName,mySmartUpload.SAVE_AUTO);
			}
			//response.sendRedirect("/uploadimage.jsp?Picurl="+ FileName + "&step=2");
		} catch (Exception e) {
			e.printStackTrace();
			return "ERR:"+e.getMessage();
		}
		return FileName;
	}	
	
	/**
	 * 获取文件扩展名
	 * @param file
	 * @return
	 */
	public static String getFileExt(String fileName) {
		if (fileName.lastIndexOf(".") != -1 && fileName.lastIndexOf(".") != 0) {
			return fileName.substring(fileName.lastIndexOf(".") + 1);
		} else {
			return "";
		}
	}


	public static void ResizeImage(String SourceFile,String TargetFile,int nw,int nh){
	try
	{
		//System.out.println("生成缩略图源文件"+SourceFile);
		java.io.File file = new java.io.File(SourceFile); //读入文件
		if(!file.exists())return;
		BufferedImage img=null;
		try
		{
		img=javax.imageio.ImageIO.read(file);
		}
		catch(Exception e)
		{
			img=readImage(file);
		}		
		
		int h = img.getHeight();
		int w = img.getWidth();
		//System.out.println("生成目标缩略图"+TargetFile);
		FileOutputStream out=new FileOutputStream(TargetFile); //输出到文件流
		

		if(nw==0&&nh==0)nw=80;
		if(nw==0)nw=w*nw/h;
		if(nh==0)nh=h*nw/w;

		//java.io.ByteArrayOutputStream out = new java.io.ByteArrayOutputStream();
        BufferedImage dest = new BufferedImage(nw, nh,BufferedImage.TYPE_INT_RGB);//TYPE_4BYTE_ABGR);
		dest.getGraphics().drawImage(img,0,0,nw, nh,null);
		
		ImageIO.write(dest, "jpg", out);
		
		out.close();
		/*
		JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); 
		encoder.encode(dest); //近JPEG编码     
		out.close();
		*/
		
	}
	catch(Exception e)
	{
		e.printStackTrace();
		System.out.println("生成缩略图bug"+e.getMessage());
	}
	
}
	

    // extract metadata
    public static BufferedImage readImage(java.io.File file) throws IOException {
        // Get an ImageReader.
    	
        try {
            ImageInputStream input = ImageIO.createImageInputStream(file);
            Iterator readers = ImageIO.getImageReaders(input);
            if (readers == null || !readers.hasNext()) {
                return null;
            }

            ImageReader reader = (ImageReader) readers.next();
            reader.setInput(input);
            String format = reader.getFormatName();

            if ("JPEG".equalsIgnoreCase(format) || "JPG".equalsIgnoreCase(format)) {
                try {
                    IIOMetadata metadata = reader.getImageMetadata(0);
                    String metadataFormat = metadata.getNativeMetadataFormatName();
                    IIOMetadataNode iioNode = (IIOMetadataNode) metadata.getAsTree(metadataFormat);

                    NodeList children = iioNode.getElementsByTagName("app14Adobe");
                    if (children.getLength() > 0) {
                        try {
                            iioNode = (IIOMetadataNode) children.item(0);
                            int transform = Integer.parseInt(iioNode.getAttribute("transform"));
                            Raster raster = reader.readRaster(0, reader.getDefaultReadParam());

                            if (input != null) {
                                input.close();
                            }
                            reader.dispose();

                            return createJPEG4(raster, transform);
                        } catch (Exception e) {
                            // TODO Auto-generated catch block
                            //log.error(e);
                        }
                    }
                } catch (Exception e) {
                    // TODO Auto-generated catch block
                   // log.error(e);
//                    LogWriter.log(file.getPath());
                }
            }
        } catch (NumberFormatException e) {
            // TODO Auto-generated catch block
            return null;
        }
        return null;
    }

    /**
     * 
     * Java's ImageIO can't process 4-component images
     * 
     * and Java2D can't apply AffineTransformOp either,
     * 
     * so convert raster data to RGB.
     * 
     * Technique due to MArk Stephens.
     * 
     * Free for any use.
     * 
     */
    private static BufferedImage createJPEG4(Raster raster, int xform) {
        try {
            int w = raster.getWidth();
            int h = raster.getHeight();
            byte[] rgb = new byte[w * h * 3];

            // if (Adobe_APP14 and transform==2) then YCCK else
            // CMYK

            if (xform == 2) { // YCCK --
                // Adobe

                float[] Y = raster.getSamples(0, 0, w, h, 0, (float[]) null);
                float[] Cb = raster.getSamples(0, 0, w, h, 1, (float[]) null);
                float[] Cr = raster.getSamples(0, 0, w, h, 2, (float[]) null);
                float[] K = raster.getSamples(0, 0, w, h, 3, (float[]) null);

                for (int i = 0, imax = Y.length, base = 0; i < imax; i++, base += 3) {
                    float k = 220 - K[i], y = 255 - Y[i], cb = 255 - Cb[i], cr = 255 - Cr[i];

                    double val = y + 1.402 * (cr - 128) - k;
                    val = (val - 128) * .65f + 128;
                    rgb[base] = val < 0.0 ? (byte) 0
                            : val > 255.0 ? (byte) 0xff : (byte) (val + 0.5);

                    val = y - 0.34414 * (cb - 128) - 0.71414 * (cr - 128) - k;
                    val = (val - 128) * .65f + 128;
                    rgb[base + 1] = val < 0.0 ? (byte) 0
                            : val > 255.0 ? (byte) 0xff : (byte) (val + 0.5);

                    val = y + 1.772 * (cb - 128) - k;
                    val = (val - 128) * .65f + 128;
                    rgb[base + 2] = val < 0.0 ? (byte) 0
                            : val > 255.0 ? (byte) 0xff : (byte) (val + 0.5);
                }

            } else {
                // assert xform==0: xform;
                // CMYK

                int[] C = raster.getSamples(0, 0, w, h, 0, (int[]) null);
                int[] M = raster.getSamples(0, 0, w, h, 1, (int[]) null);
                int[] Y = raster.getSamples(0, 0, w, h, 2, (int[]) null);
                int[] K = raster.getSamples(0, 0, w, h, 3, (int[]) null);

                for (int i = 0, imax = C.length, base = 0; i < imax; i++, base += 3) {
                    int c = 255 - C[i];
                    int m = 255 - M[i];
                    int y = 255 - Y[i];
                    int k = 255 - K[i];
                    float kk = k / 255f;

                    rgb[base] = (byte) (255 - Math.min(255f, c * kk + k));
                    rgb[base + 1] = (byte) (255 - Math.min(255f, m * kk + k));
                    rgb[base + 2] = (byte) (255 - Math.min(255f, y * kk + k));
                }
            }

            // from other image types we know InterleavedRaster's can be
            // manipulated by AffineTransformOp, so create one of those.
            raster = Raster.createInterleavedRaster(new DataBufferByte(rgb,
                    rgb.length), w, h, w * 3, 3, new int[]{0, 1, 2}, null);

            ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
            ColorModel cm = new ComponentColorModel(cs, false, true,
                    Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
            return new BufferedImage(cm, (WritableRaster) raster, true, null);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            //log.error(e);
            return null;
        }
    }


	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//ResizeImage("C:\\aaa.jpg","C:\\rgb.jpg",30,0);
		//ResizeImage("C:\\111.jpg","C:\\cmyk.jpg",30,0);
		String sss="ERR:asdfasdfasfd";
		if(sss.indexOf(":")>0)System.out.println(sss);
	}

}
</span>


所有的图片都会上传到,upload文件目录下。这个参数也是可以变化的。


我们发出的请求:http://localhost:8080/UploadControl/dialog/stock.jsp?uploadpath=upload/purchase/&time=Sat%20Sep%2026%2020:51:29%20CST%202015


提交的方法是这样的:


<span style="font-size:18px;">                SmartUpload mySmartUpload = new SmartUpload();
		mySmartUpload.initialize(pagecontext);
		//mySmartUpload.initialize(config, request, response);
		mySmartUpload.setMaxFileSize(20480 * 1024);
		mySmartUpload.setAllowedFilesList("jpg,JPG,gif,GIF,png,PNG,jpeg,JPEG,bmp,BMP,tif,TIF,tiff,TIFF,swf,SWF,flv,FLV,doc,DOC,txt,TXT,xls,CLS,csv,CSV,ppt,PPT,zip,ZIP,rar,RAR");

			mySmartUpload.upload();
			File myFile = mySmartUpload.getFiles().getFile(0);
			
			if (!myFile.isMissing()) {
				if(FileName.equals(""))FileName=myFile.getFileName();
				if(FileName.equals(""))
				{
				Date currTime = new Date();
				SimpleDateFormat formatter2 = new SimpleDateFormat("yyyyMMddhhmmssSSS", Locale.US);
				FileName = new String((formatter2.format(currTime)).getBytes("iso-8859-1"));
				}
				String ext = myFile.getFileExt();
				FileName = FileName + "." + ext;				
				myFile.saveAs(rpath + "/" + FileName,mySmartUpload.SAVE_AUTO);
			}
			;
		} catch (Exception e) {
			e.printStackTrace();
			return "ERR:"+e.getMessage();
		}
		return FileName;</span>

提交路径为:


<span style="font-size:18px;">		if(sPath==null)sPath="/upload";
		if(sPath.equals(""))sPath="/upload";
		if(FileName==null)FileName="";

		if(rootdir.equals(""))rootdir=pagecontext.getServletContext().getRealPath("/");
		
		String rpath=rootdir+"/"+sPath;		
		java.io.File f = new java.io.File(rpath);
		if(!f.exists())f.mkdirs();
		
		rpath=f.getPath();</span>



总结:


在这个类中,我们发现写的真心的难看,但是,没有关系,我们只要会用了就可以了。





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