上传图片压缩

xiaoyong931011

2023-03-06 a2574dc9e3c432cda912618b9ce698726717faa5

上传图片压缩

 pom.xml

@@ -28,6 +28,13 @@
    </properties>

    <dependencies>
        <!--        图片压缩-->
        <dependency>
            <groupId>net.coobird</groupId>
            <artifactId>thumbnailator</artifactId>
            <version>0.4.8</version>
        </dependency>

        <dependency>
            <groupId>commons-httpclient</groupId>
            <artifactId>commons-httpclient</artifactId>

 src/main/java/cc/mrbird/febs/mall/controller/AdminMallGoodsController.java

@@ -18,13 +18,17 @@
import cn.hutool.core.util.StrUtil;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import net.coobird.thumbnailator.Thumbnails;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import sun.misc.BASE64Encoder;

import javax.imageio.ImageIO;
import javax.validation.Valid;
import javax.validation.constraints.NotNull;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
@@ -50,15 +54,34 @@
            new FebsResponse().message("上传文件为空");
        }

        //文件加密
        BASE64Encoder base64Encoder =new BASE64Encoder();
        String base64EncoderImg = null;
        String base64EncoderImg = "";
        try {
            base64EncoderImg = base64Encoder.encode(file.getBytes());
        } catch (IOException e) {
            //输出到BufferedImage
            BufferedImage bufferedImage = Thumbnails.of(file.getInputStream())
                    // 图片大小（长宽）压缩比例 从0-1，1表示原图
                    .scale(1f)
                    // 图片质量压缩比例 从0-1，越接近1质量越好
                    .outputQuality(0.5f)
                    .asBufferedImage();
            //对内存中的图片文件进行Base64处理
            ByteArrayOutputStream newBaos = new ByteArrayOutputStream();//io流
            ImageIO.write(bufferedImage, "jpg", newBaos);//写入流中
            byte[] bytes = newBaos.toByteArray();//转换成字节
            base64EncoderImg = new BASE64Encoder().encode(bytes);
//            base64EncoderImg = URLEncoder.encode(new BASE64Encoder().encode(bytes), "UTF-8");
        } catch (Exception e) {
            e.printStackTrace();
        }

        //文件加密
//        BASE64Encoder base64Encoder =new BASE64Encoder();
//        String base64EncoderImg = null;
//        try {
//            base64EncoderImg = base64Encoder.encode(file.getBytes());
//        } catch (IOException e) {
//            e.printStackTrace();
//        }

        String imageFuffix = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."));
//      String imageFuffix = ".png";
        String imageNames = System.currentTimeMillis() + IdUtil.simpleUUID() + imageFuffix;