jspSmartUpload实现图片的批量上传

来源：互联网发布：ubuntu16 安装软件编辑：程序博客网时间：2024/05/22 04:44

batchUpload.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>批量上传</title><meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="this is my page"><meta http-equiv="content-type" content="text/html; charset=UTF-8"><style type="text/css">.tableStyle {border: 1px solid blue;padding: 1px;height: 45px;vertical-align: middle;}.tableStyle .tdStyle { /* 派生选择器+类选择器 */border: 1px solid green;}</style></head><body><div><form action="doBatchUpload.jsp" method="post" enctype="multipart/form-data"name="form1"><table class="tableStyle" align="center" border="1"><tr><td class="tdStyle">请选择上传文件<input type="file" name="file1" /></td></tr><tr><td class="tdStyle">请选择上传文件<input type="file" name="file2" /></td></tr><tr><td class="tdStyle">请选择上传文件<input type="file" name="file3" /></td></tr><tr><td class="tdStyle"><input type="submit" name="submit" value="上传" /></td></tr></table></form></div></body></html>

doBatchUpload1.jsp

<%@ page language="java" import="java.util.*,com.jspsmart.upload.*"pageEncoding="utf-8"%><%String path = request.getContextPath();String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()+ path + "/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><base href="<%=basePath%>"><title>处理批上传页面</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"><meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><%//这个处理文件没有对图片进行压缩SmartUpload smartUpload = new SmartUpload();smartUpload.initialize(pageContext);int count = 0;String ext = null;float file_size = 0f;long file_size_max = 4000000;String url = "uploadfile/images/";//应保证在根目录中有此目录的存在out.println("文件的个数是：" + smartUpload.getFiles().getCount());for (int i = 0; i < smartUpload.getFiles().getCount(); i++) {com.jspsmart.upload.File myFile = smartUpload.getFiles().getFile(i);//String fileName = myFile.getFileName(); //获取源文件名//count = smartUpload.save();file_size = myFile.getSize();smartUpload.upload("utf-8");//指定编码的upload()方法if (myFile.isMissing()) {%><script type="text/javascript">window.alert("请先选择要上传的文件");window.location = " batchUpload.html";</script><%} else {String myFileName = myFile.getFileName();//取得上载的文件的文件名ext = myFile.getFileExt();//取得后缀名if (!(ext.length() > 0)) {out.println("**************myFileName的文件名是：" + myFileName);}String saveUrl = "";//文件保存路径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());//设置新的文件名saveUrl += fileName + "." + ext;myFile.saveAs(saveUrl, smartUpload.SAVE_PHYSICAL);out.println(saveUrl);out.println(file_size);}}}%></head><body></body></html>

doBatchUpload2.jsp

<%@ page language="java" import="java.util.*,java.io.*"pageEncoding="utf-8"%><%@ page import="com.jspsmart.upload.SmartUpload"%><%@ page import="javax.servlet.jsp.tagext.TryCatchFinally"%><%@ page import="javax.imageio.ImageIO"%><%@ page import="java.awt.image.BufferedImage"%><%@ page import="com.sun.image.codec.jpeg.JPEGImageEncoder"%><%@ page import="com.sun.image.codec.jpeg.JPEGCodec"%><%String path = request.getContextPath();String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort()+ path + "/";%><%//这个处理文件实现了对图片的压缩SmartUpload mySmartUpload = new SmartUpload();long file_size_max = 4000000;String fileName2;//文件名String ext;//文件扩展名String testVar;String url = "upload/images/";//应保证在根目录中有此目录的存在//初始化mySmartUpload.initialize(pageContext);//只允许上载此类文件try {//支持上载文件的后缀名//mySmartUpload.setAllowedFilesList("jpg,gif");//mySmartUpload.setAllowedFilesList("jpg,gif,jpeg,png");//不支持制定的后缀mySmartUpload.setDeniedFilesList("exe");//上载文件//mySmartUpload.upload();//不指定编码的upload()方法mySmartUpload.upload("utf-8");//指定编码的upload()方法} catch (Exception e) {out.print("<script type=\"text/javascript\">");out.print("window.alert(\"只允许上传.jpg和.gif类型图片文件\");");out.print("window.location=\"upload.html;\"");out.print("</script>");}try {for (int i = 0; i < mySmartUpload.getFiles().getCount(); i++) {com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(i);if (myFile.isMissing()) {out.print("<script type=\"text/javascript\">");out.print("window.alert(\"请先选择要上传的文件\");");out.print("window.location=\"upload.html;\"");out.print("</script>");} else {String myFileName = myFile.getFileName();//取得上载的文件的文件名ext = myFile.getFileExt();//取得后缀名if (!(ext.length() > 0)) {out.println("**************myFileName的名称是：" + myFileName);}int file_size = myFile.getSize();//取得文件的大小String saveUrl = "";//文件保存路径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());//设置新的文件名saveUrl += fileName + "." + ext;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out.println("ext=" + ext);String newUrl = request.getRealPath("/") + url + fileName + "_min." + ext;//新的缩略图保存地址java.awt.Image src = javax.imageio.ImageIO.read(file);//构造Image对象float tagSize = 200;int old_w = src.getWidth(null);//得到原图宽int old_h = src.getHeight(null);//得到原图高int new_w = 0;int new_h = 0;int tempSize;//设置临时大小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);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();} else {out.print("<script type=\"text/javascript\">");out.print("window.alert(\"上传文件大小不能超过\"+(file_size_max/1000)+\"K\");");out.print("window.location=\"upload.html;\"");out.print("</script>");}}}} catch (Exception e) {e.printStackTrace();}%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><base href="<%=basePath%>"><title>处理上传图片的JSP</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"><meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"></head><body></body></html>

0 2