jsp上传头像以及生成缩略图(已修改,已加效果图)
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- <%@ page autoFlush="false" contentType="text/html;charset=utf-8" language="java" import="java.io.*,java.awt.Image,java.awt.image.*,com.sun.image.codec.jpeg.*,java.sql.*,com.jspsmart.upload.*,java.util.*,java.io.FileInputStream,java.io.FileOutputStream,java.awt.*"%>
- <%@ page import="com.blog.vo.*" %>
- <%
- SmartUpload mySmartUpload =new SmartUpload();
- long file_size_max=4000000;
- String fileName2="",ext="",testvar="";
- String url="uploadfile/images/";
-
- mySmartUpload.initialize(pageContext);
-
- try {
- mySmartUpload.setAllowedFilesList("jpg,gif,JPG,GIF");
-
- mySmartUpload.upload();
- } catch (Exception e){
- %>
- <SCRIPT language=javascript>
- alert("只允许上传.jpg和.gif类型图片文件");
- window.location='face.jsp';
- </script>
- <%
- }
- try{
- com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
- if (myFile.isMissing()){%>
- <SCRIPT language=javascript>
- alert("请先选择要上传的文件");
- window.location='face.jsp';
- </script>
- <%}
- else{
-
- ext= myFile.getFileExt();
- int file_size=myFile.getSize();
- String saveurl="";
- if(file_size<file_size_max){
-
- Calendar calendar = Calendar.getInstance();
- String filename = String.valueOf(calendar.getTimeInMillis());
- saveurl=request.getRealPath("/")+url;
- saveurl+=filename+"."+ext;
- myFile.saveAs(saveurl,mySmartUpload.SAVE_PHYSICAL);
-
- java.io.File file = new java.io.File(saveurl);
- String newurl=request.getRealPath("/")+url+filename+"_min."+ext;
- Image src = javax.imageio.ImageIO.read(file);
- float tagsize=110;
- int old_w=src.getWidth(null);
- int old_h=src.getHeight(null);
- int new_w=0;
- int new_h=0;
- 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);
- BufferedImage image = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
- Graphics g = image.getGraphics();
- g.drawImage(src,0,0,new_w,new_h,null);
- g.setFont(new Font("Times New Roman",Font.PLAIN,24));
- String rand = "";
- g.setColor(Color.red);
- g.drawString(rand,new_w-200,new_h-10);
- g.dispose();
-
- FileOutputStream newimage=new FileOutputStream(newurl);
- JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);
- encoder.encode(image);
- newimage.close();
- UserInfo ui = (UserInfo)request.getSession().getAttribute("userinfo");
- ui.setFace(url+filename+"_min."+ext);
- session.setAttribute("userinfo",ui);
- String turl="face.jsp?src="+url+filename+"_min."+ext;
- out.print("<SCRIPT language='javascript'>");
- out.print("window.location='"+turl+"'");
- out.print("</SCRIPT>");
- }
- 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='face.jsp;'");
- out.print("</SCRIPT>");
- }
- }
- }catch (Exception e){
-
- e.toString();
-
- }
-
- %>
- <%@ page autoFlush="false" contentType="text/html;charset=utf-8" language="java" import="java.io.*,java.awt.Image,java.awt.image.*,com.sun.image.codec.jpeg.*,java.sql.*,com.jspsmart.upload.*,java.util.*,java.io.FileInputStream,java.io.FileOutputStream,java.awt.*"%>
- <%@ page import="com.blog.vo.*" %>
- <%
- SmartUpload mySmartUpload =new SmartUpload();
- long file_size_max=4000000;
- String fileName2="",ext="",testvar="";
- String url="uploadfile/images/";
-
- mySmartUpload.initialize(pageContext);
-
- try {
- mySmartUpload.setAllowedFilesList("jpg,gif,JPG,GIF");
-
- mySmartUpload.upload();
- } catch (Exception e){
- %>
- <SCRIPT language=javascript>
- alert("只允许上传.jpg和.gif类型图片文件");
- window.location='face.jsp';
- </script>
- <%
- }
- try{
- com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
- if (myFile.isMissing()){%>
- <SCRIPT language=javascript>
- alert("请先选择要上传的文件");
- window.location='face.jsp';
- </script>
- <%}
- else{
-
- ext= myFile.getFileExt();
- int file_size=myFile.getSize();
- String saveurl="";
- if(file_size<file_size_max){
-
- Calendar calendar = Calendar.getInstance();
- String filename = String.valueOf(calendar.getTimeInMillis());
- saveurl=request.getRealPath("/")+url;
- saveurl+=filename+"."+ext;
- myFile.saveAs(saveurl,mySmartUpload.SAVE_PHYSICAL);
-
- java.io.File file = new java.io.File(saveurl);
- String newurl=request.getRealPath("/")+url+filename+"_min."+ext;
- Image src = javax.imageio.ImageIO.read(file);
- float tagsize=110;
- int old_w=src.getWidth(null);
- int old_h=src.getHeight(null);
- int new_w=0;
- int new_h=0;
- 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);
- BufferedImage image = new BufferedImage(new_w,new_h,BufferedImage.TYPE_INT_RGB);
- Graphics g = image.getGraphics();
- g.drawImage(src,0,0,new_w,new_h,null);
- g.setFont(new Font("Times New Roman",Font.PLAIN,24));
- String rand = "";
- g.setColor(Color.red);
- g.drawString(rand,new_w-200,new_h-10);
- g.dispose();
-
- FileOutputStream newimage=new FileOutputStream(newurl);
- JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);
- encoder.encode(image);
- newimage.close();
- UserInfo ui = (UserInfo)request.getSession().getAttribute("userinfo");
- ui.setFace(url+filename+"_min."+ext);
- session.setAttribute("userinfo",ui);
- String turl="face.jsp?src="+url+filename+"_min."+ext;
- out.print("<SCRIPT language='javascript'>");
- out.print("window.location='"+turl+"'");
- out.print("</SCRIPT>");
- }
- 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='face.jsp;'");
- out.print("</SCRIPT>");
- }
- }
- }catch (Exception e){
-
- e.toString();
-
- }
-
- %>