本文实例讲述了Java实现的图片上传工具类。分享给大家供大家参考，具体如下：

package com.gcloud.common;import javax.imageio.ImageIO;import java.awt.image.BufferedImage;import java.io.*;/** * 图片上传工具类 * Created by charlin on 2017/9/10. */public class UploadImageUtil { private String fileType; private Long maxSize; private Long width; private Long height; public UploadImageUtil() { } public UploadImageUtil(String fileType, Long maxSize, Long width, Long height) { this.fileType = fileType; this.maxSize = maxSize; this.width = width; this.height = height; } /** * 检查上传图像大小 * * @param upload * @param uploadFileName * @param uploadContentType * @return */ public String checkUploadImage(File upload, String uploadFileName, String uploadContentType) { try { if (fileType != null) { String[] fileTypes = fileType.split(","); int count = 0; for (int i = 0; i < fileTypes.length; i++) { if (uploadContentType.equals(fileTypes[i])) { count++; continue; } } if (count == 0) { return "您上传的文件类型不对!"; } } BufferedImage bi = ImageIO.read(upload); int w = bi.getWidth(); int h = bi.getHeight(); if (w > width || h > height) { return "上传照片宽度和高度不符合要求"; } if (upload.length() > maxSize) { return "上传照片过大"; } } catch (IOException e) { e.printStackTrace(); } return null; } /** * 图片上传 * * @param upload * @param uploadFileName * @param path * @return * @throws Exception */ public void uploadImage(File upload, String uploadFileName, String path) throws Exception { InputStream is = null; OutputStream os = null; try { is = new FileInputStream(upload); File f = new File(path); if (!f.exists()) f.mkdirs(); os = new FileOutputStream(path + "/" + uploadFileName); byte buffer[] = new byte[1024]; int count = 0; int flag = 0; while ((count = is.read(buffer)) > 0) { os.write(buffer, 0, count); } } catch (FileNotFoundException e) { } catch (IOException e) { File f = new File(path + "/" + uploadFileName); if (f.exists()) { f.delete(); } } finally { try { os.close(); is.close(); } catch (IOException ioe) { } } } /** * 清除文件 * @param path */ public void clear(String path) { File file = new File(path); if (file.isFile() && file.exists()) { file.delete(); } } public String getFileType() { return fileType; } public void setFileType(String fileType) { this.fileType = fileType; } public Long getMaxSize() { return maxSize; } public void setMaxSize(Long maxSize) { this.maxSize = maxSize; } public Long getWidth() { return width; } public void setWidth(Long width) { this.width = width; } public Long getHeight() { return height; } public void setHeight(Long height) { this.height = height; }}

更多java相关内容感兴趣的读者可查看本站专题：《Java图片操作技巧汇总》、《java日期与时间操作技巧汇总》、《Java操作DOM节点技巧总结》、《Java文件与目录操作技巧汇总》及《Java数据结构与算法教程》。

希望本文所述对大家java程序设计有所帮助。