[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](http://img.e-com-net.com/image/info5/5eefff4ed60e438fb80ab1bf64f9ec48.jpg)
或者是这样的：
![[置顶] jspsmart上传图片到Tomcat_第2张图片](http://img.e-com-net.com/image/info5/f41ae60e7ba14daa9d9291ef5049526d.jpg)
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> </td>
<td height=5 align="right">图片描述:</td>
<td height=5> </td>
<td height=5><input name="d_info" type=text id="d_info" style="width:243px" value="" size=30></td>
<td height=5> </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'> -->
<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](http://img.e-com-net.com/image/info5/e920e6658319477d912505b494a2c604.png)
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。