新增图片压缩

platform-admin/src/main/java/com/platform/controller/api/OssTestApi.java

 package com.platform.controller.api;
 
+import java.io.BufferedOutputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.text.DecimalFormat;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpSession;
 
 import com.platform.utils.OssUtil;
+import com.platform.utils.PicUtils;
 import org.apache.commons.lang.StringUtils;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -52,21 +51,26 @@ public class OssTestApi {
     @ResponseBody
     public String upload(MultipartFile file, String secondaryFolderName) {
         try {
+            byte[] bytes = PicUtils.compressPicForScale(file.getBytes(), 70);
             // 获取文件名
-            String fileName = file.getOriginalFilename();
-            // 获取文件后缀
-            String prefix = fileName.substring(fileName.lastIndexOf("."));
+//            String fileName = file.getOriginalFilename();
+//            // 获取文件后缀
+//            String prefix = fileName.substring(fileName.lastIndexOf("."));
             // 用uuid作为文件名，防止生成的文件重复
-            final File mfile = File.createTempFile(UuidUtil.get32UUID(), prefix);
+//            final File mfile = File.createTempFile(UuidUtil.get32UUID(), prefix);
+            long l = System.currentTimeMillis();
+            String urlName = UUID.randomUUID() + "-" + String.valueOf(l).substring(6) + ".jpg";
 
-            // MultipartFile to File
-            file.transferTo(mfile);
-            if (StringUtils.isBlank(secondaryFolderName)) {
-                secondaryFolderName = "afrishop";
-            }
-            String url = OssUtil.uploadObject2OSS(mfile, secondaryFolderName);
-            System.out.println(mfile.getName());
+            String url = OssUtil.upload(bytes, urlName, "afrishop_new");
             System.out.println(url);
+            // MultipartFile to File
+//            file.transferTo(mfile);
+//            if (StringUtils.isBlank(secondaryFolderName)) {
+//                secondaryFolderName = "afrishop";
+//            }
+//            String url = OssUtil.uploadObject2OSS(mfile, secondaryFolderName);
+//            System.out.println(mfile.getName());
+//            System.out.println(url);
             return url;
         } catch (Exception e) {
             e.printStackTrace();

platform-admin/src/main/resources/dev/platform.properties

@@ -7,9 +7,9 @@
 #jdbc.password=diaoyun666
 
 
-jdbc.url: jdbc:mysql://159.138.48.71:3306/test?useUnicode=true&characterEncoding=UTF-8&rewriteBatchedStatements=true&autoReconnect=true&failOverReadOnly=false&zeroDateTimeBehavior=convertToNull&useSSL=false
+jdbc.url: jdbc:mysql://159.138.48.71:3306/chinafrica?useUnicode=true&characterEncoding=UTF-8&rewriteBatchedStatements=true&autoReconnect=true&failOverReadOnly=false&zeroDateTimeBehavior=convertToNull&useSSL=false
 jdbc.username: root
-jdbc.password: Diaoyunnuli.8
+jdbc.password: AfriShop_date@2#!&*8
 
 jdbc.initialSize=5
 jdbc.maxActive=30

platform-admin/src/main/resources/prod/platform.properties

@@ -7,9 +7,9 @@
 #jdbc.password=diaoyun666
 
 
-jdbc.url: jdbc:mysql://159.138.48.71:3306/test?useUnicode=true&characterEncoding=UTF-8&rewriteBatchedStatements=true&autoReconnect=true&failOverReadOnly=false&zeroDateTimeBehavior=convertToNull&useSSL=false
+jdbc.url: jdbc:mysql://159.138.48.71:3306/chinafrica?useUnicode=true&characterEncoding=UTF-8&rewriteBatchedStatements=true&autoReconnect=true&failOverReadOnly=false&zeroDateTimeBehavior=convertToNull&useSSL=false
 jdbc.username: root
-jdbc.password: Diaoyunnuli.8
+jdbc.password: AfriShop_date@2#!&*8
 
 jdbc.initialSize=5
 jdbc.maxActive=30

platform-common/pom.xml

@@ -25,7 +25,11 @@
 
     </properties>
     <dependencies>
-
+        <dependency>
+            <groupId>net.coobird</groupId>
+            <artifactId>thumbnailator</artifactId>
+            <version>0.4.8</version>
+        </dependency>
         <!-- excel工具 -->
         <dependency>
             <groupId>javax.servlet</groupId>

platform-common/src/main/java/com/platform/utils/PicUtils.java

+package com.platform.utils;
+
+import net.coobird.thumbnailator.Thumbnails;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+
+/**
+ * @Auther: wudepeng
+ * @Date: 2021/01/25
+ * @Description:
+ */
+public class PicUtils {
+    //以下是常量,按照阿里代码开发规范,不允许代码中出现魔法值
+    private static Logger logger = LoggerFactory.getLogger(PicUtils.class);
+    private static final Integer ZERO = 0;
+    private static final Integer ONE_ZERO_TWO_FOUR = 1024;
+    private static final Integer NINE_ZERO_ZERO = 900;
+    private static final Integer THREE_TWO_SEVEN_FIVE = 3275;
+    private static final Integer TWO_ZERO_FOUR_SEVEN = 2047;
+    private static final Double ZERO_EIGHT_FIVE = 0.85;
+    private static final Double ZERO_SIX = 0.6;
+    private static final Double ZERO_FOUR_FOUR = 0.44;
+    private static final Double ZERO_FOUR = 0.4;
+
+    /**
+     * 根据指定大小压缩图片
+     *
+     * @param imageBytes  源图片字节数组
+     * @param desFileSize 指定图片大小，单位kb
+     * @return 压缩质量后的图片字节数组
+     */
+    public static byte[] compressPicForScale(byte[] imageBytes, long desFileSize) {
+        if (imageBytes == null || imageBytes.length <= ZERO || imageBytes.length < desFileSize * ONE_ZERO_TWO_FOUR) {
+            return imageBytes;
+        }
+        long srcSize = imageBytes.length;
+        double accuracy = getAccuracy(srcSize / ONE_ZERO_TWO_FOUR);
+        try {
+            while (imageBytes.length > desFileSize * ONE_ZERO_TWO_FOUR) {
+                ByteArrayInputStream inputStream = new ByteArrayInputStream(imageBytes);
+                ByteArrayOutputStream outputStream = new ByteArrayOutputStream(imageBytes.length);
+                Thumbnails.of(inputStream)
+                        .scale(accuracy)
+                        .outputQuality(accuracy)
+                        .toOutputStream(outputStream);
+                imageBytes = outputStream.toByteArray();
+            }
+            logger.info("图片原大小={}kb | 压缩后大小={}kb",
+                    srcSize / ONE_ZERO_TWO_FOUR, imageBytes.length / ONE_ZERO_TWO_FOUR);
+        } catch (Exception e) {
+            logger.error("【图片压缩】msg=图片压缩失败!", e);
+        }
+        return imageBytes;
+    }
+
+    /**
+     * 自动调节精度(经验数值)
+     *
+     * @param size 源图片大小
+     * @return 图片压缩质量比
+     */
+    private static double getAccuracy(long size) {
+        double accuracy;
+        if (size < NINE_ZERO_ZERO) {
+            accuracy = ZERO_EIGHT_FIVE;
+        } else if (size < TWO_ZERO_FOUR_SEVEN) {
+            accuracy = ZERO_SIX;
+        } else if (size < THREE_TWO_SEVEN_FIVE) {
+            accuracy = ZERO_FOUR_FOUR;
+        } else {
+            accuracy = ZERO_FOUR;
+        }
+        return accuracy;
+    }
+
+}