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  • SpringMVC上传图片并压缩及剪切demo



    /**
     * 
     */
    package com.up.controller;
    
    import java.awt.Image;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.PrintWriter;
    import java.util.Random;
    
    import javax.imageio.ImageIO;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.multipart.MultipartFile;
    
    import com.up.constant.SystemConstants;
    import com.up.util.FileCopy;
    import com.up.util.ImageUtils;
    import com.up.util.OperateImage;
    import com.up.util.UploadUtil;
    
    
    /**
     * @author hu.shiguo
     * @time 2014-3-14下午2:53:15
     * @description
     * @version
     */
    @Controller
    @RequestMapping(value="upload")
    public class UploadFileController {
        
    	/**
    	 * 图片上传
    	 * @param request
    	 * @param response
    	 * @param myFile
    	 */
    	@RequestMapping(value = "uploadFile")
    	public void upload(HttpServletRequest request, HttpServletResponse response, 
    			@RequestParam MultipartFile myFile)
    	{
    		//要删除文件的所在子文件夹
    		String fileFolderpath = request.getParameter("fileFolderpath");  
    		//工程文件夹
    		String projectPath  = SystemConstants.WEB_ROOT;
    		File files = new File(projectPath);
    		//上传文件保存文件夹
    		String uploadFilePath = files.getParent()+File.separator; 
    		//String uploadFilePath =files.getPath()+File.separator + "uploadFile";  
    		//上传实际路径
    		String basePath = uploadFilePath+"uploadFile"+File.separator+"up"+File.separator +fileFolderpath;  
    		//未压缩的图片上传至暂时文件夹
    		String tempPath = uploadFilePath+"uploadFile"+File.separator+"up"+File.separator +SystemConstants.URL_TEMP; 
    		InputStream is = null ;
    		FileOutputStream os = null;
    		if (!new File(basePath).isDirectory()) 
    		{
    			new File(basePath).mkdirs();
    		}
    		try
    		{
    			//获取上传文件旧名
    			String name = myFile.getOriginalFilename();
    			//获取后缀名
    			String last = name.substring(name.lastIndexOf(".")+1); 
    			//上传路径--压缩前
    			String org = "";
    			File file = new File(tempPath, System.currentTimeMillis() + new Random(50000).nextInt() + "."+last);
    		    is = myFile.getInputStream();
    			os = new FileOutputStream(file); 
    			//上传
    			UploadUtil.copyFile(is, os);  
    			//获取未压缩图片上传后的绝对路径===在暂时文件夹文件夹中 
    			org = file.getAbsolutePath();
    			System.out.println("org=="+org);
    			//压缩后图片存储路径 
    			String dest = System.currentTimeMillis() + new Random(50000).nextInt() + "."+last;
    			System.out.println("dest=="+dest);
    			//System.out.println("file.getName():"+file.getName());  
    			//方法一:进行压缩 
    			boolean bol1 = ImageUtils.resize(org, basePath+File.separator+dest, 200, 200);  
    			//方法二:进行剪切
    			//返回压缩后的图片名称到前端展示 
    			//先缩放,再裁剪
    			boolean bol2 = false;
    			if(bol1){
    				OperateImage o = new OperateImage(basePath+File.separator+dest, 0, 0, 200, 200);     
    				o.setSubpath(basePath+File.separator+dest);
    				o.setImageType(last);  
    				bol2 = o.cut();   
    			} 
    			if(bol1||bol2){ 
    				System.out.println("---------"+dest); 
    				response.getWriter().write(dest);   
    			}else{
    				FileCopy fc = new FileCopy();
    				//由于没有压缩。所以将未压缩的文件从暂时文件里复制至目标路径下  
    				fc.doMoveFile(file.getName(), tempPath, basePath);
    				response.getWriter().write(file.getName()); 
    			}
    		}
    		catch (Exception e) 
    		{
    			e.printStackTrace();
    		}finally{
    			try{  
    				if (os != null) {
    					os.close();
    				}
    				if (is != null) {
    					is.close();
    				}
    			} catch (Exception e) {
    					os = null;
    					is = null;
    			}
    		}
    	}
    	
    	
    	/**
    	 * 删除上传图片
    	 * @param request
    	 * @param response
    	 * @param myFile
    	 */
    	@RequestMapping(value = "deleteFile.html") 
    	public void  deleteFile(HttpServletRequest request,
    			HttpServletResponse response)
    	{
    		String fileFolderpath = request.getParameter("fileFolderpath")+"/"; 
    		String fileName = request.getParameter("fileName");
    		//工程文件夹 
    		String webPath  = SystemConstants.WEB_ROOT;
    		File files = new File(webPath);
    		//上传文件的文件夹
    		String uploadFilePath = files.getParent()+File.separator; 
    		//String uploadFilePath =files.getPath()+File.separator + "uploadFile";  
    		String basePath = uploadFilePath+SystemConstants.URL_UPLOADFILE+fileFolderpath+fileName; 
    
    		File file = new File(basePath);
    		if (file.isFile() || file.isDirectory()) 
    		{
    			file.delete();
    		}
    	  String str = "true";
    	  response.setContentType("text/xml;charset=UTF-8"); 
    	  response.setCharacterEncoding("UTF-8");
    	  r
    
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  • 原文地址:https://www.cnblogs.com/zsychanpin/p/6794898.html
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