URL图片上传到OSS服务器

墨蓝 2022-03-26 14:08 365阅读 0赞

## 方案 ##

先缓存到本地，再放到服务器

package com.duodian.youhui.admin.utils;
    
    import com.duodian.youhui.admin.Exceptions.AppException;
    import com.duodian.youhui.admin.constants.SystemParams;
    import com.duodian.youhui.admin.utils.qCode.ImageUtils;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.stereotype.Service;
    
    import javax.imageio.ImageIO;
    import java.awt.*;
    import java.awt.image.BufferedImage;
    import java.io.*;
    import java.net.URL;
    
    /** * 作者 ：HealerJean * 日期 ：2019/1/16 下午7:01. * 类描述： */
    @Slf4j
    @Service
    public class ImageUploadUtils { 
    
    
        /** * 先缓存到本地再上传到阿里云oss服务器 * @param imgUrl * @return */
        public static String uploadUrlToAliyun(String imgUrl) { 
            FileInputStream inputStream = null;
            FileOutputStream outputStream = null;
            File file = null ;
            try { 
    
                //获取文件输出流
                 file = new File(SystemParams.WECHAT_IMAGE_EMPT_URI+ StringGeneratorUtil.generate()+".jpg");
                outputStream = new FileOutputStream(file);
    
                //获取图片
                URL url = new URL(imgUrl);
                java.awt.Image imageTookit = Toolkit.getDefaultToolkit().createImage(url);
                BufferedImage bufferedImage = ImageUtils.toBufferedImage(imageTookit);
    
                //图片保存到本地流
                ImageIO.write(bufferedImage, "jpg", outputStream);
    
                //获取读流
                inputStream = new FileInputStream(file);
    
                //上传到阿里云服务器
                String fileLink = "admin/duodianyouhui/imgurl" + StringGeneratorUtil.generate() + ".jpg" ;
                OSSUploader.upload(fileLink,inputStream);
    
    
                // return SystemParams.OSS_HOST+ fileLink ;
                return  fileLink ;
    
            } catch (FileNotFoundException e) { 
                throw  new AppException("文件流出错");
            }catch (Exception e){ 
                ExceptionLogUtils.log(e,ImageUploadUtils.class );
                throw  new AppException(e.getMessage());
            }finally {  //关闭不必要的连接
    
                //图片生成将服务器文件删除
                if(file.exists()){ 
                    file.delete();
                }
                try { 
                    if(inputStream!=null) { 
                        inputStream.close();
                    }if(outputStream!=null){ 
                        outputStream.close();
                    }
                    inputStream = null ; //关闭并置空
                    outputStream = null; //关闭并置空
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
        }
    
    }

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