edit

pom.xml

@@ -195,6 +195,11 @@
             <artifactId>fastjson</artifactId>
             <version>1.2.24</version>
         </dependency>
+        <dependency>
+            <groupId>com.luhuiguo</groupId>
+            <artifactId>aspose-pdf</artifactId>
+            <version>23.1</version>
+        </dependency>
         <dependency>
             <groupId>com.singularsys</groupId>
             <artifactId>jep</artifactId>

src/main/java/lingtao/net/util/AStickersPrice.java

@@ -1,5 +1,7 @@
 package lingtao.net.util;
 
+import com.aspose.pdf.Document;
+import com.aspose.pdf.optimization.OptimizationOptions;
 import lingtao.net.bean.Product;
 
 import java.io.File;
@@ -390,34 +392,30 @@ public class AStickersPrice {
     }
 
     public static void main(String[] args) {
-        String path = "Z:\\设计文件共享中心\\已下单\\2019\\1月\\年后出货\\不干胶\\dy\\已拼";
+        String source = "C:\\Users\\231010\\Downloads\\蓝朝旺.pdf";
-        Path startPath = Paths.get(path);
+        String target = "C:\\Users\\231010\\Downloads\\蓝朝旺1.pdf";
-        try {
+        optimize(source, target);
-            Files.walk(startPath).filter(Files::isRegularFile).forEach(System.out::println);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
     }
 
-    public static String midStrEx(String source, String startStr, String endStr) {
+    public static void optimize(String source, String target) {
-        String result = "";
+        Document doc = new Document(source);
-        int startIndex, endIndex;
+        //设置压缩属性
-        try {
+        OptimizationOptions opt = new OptimizationOptions();
-            startIndex = source.indexOf(startStr);
+        //删除PDF不必要的对象
-            if (startIndex == -1) {
+        opt.setRemoveUnusedObjects(true);
-
+        //链接重复流
-                return result;
+        opt.setLinkDuplcateStreams(false);
+        //删除未使用的流
+        opt.setRemoveUnusedStreams(false);
+        //删除不必要的字体
+        opt.setUnembedFonts(true);
+        //压缩PDF中的图片
+        opt.getImageCompressionOptions().setCompressImages(true);
+        //图片压缩比， 0 到100可选，越低压缩比越大
+        opt.getImageCompressionOptions().setImageQuality(100);
+        doc.optimizeResources(opt);
+        //优化web的PDF文档
+        doc.optimize();
+        doc.save(target);
     }
-            String tmpStr = source.substring(startIndex + startStr.length());
-            endIndex = tmpStr.indexOf(endStr);
-            if (endIndex == -1) {
-                return result;
-            }
-            result = tmpStr.substring(0, endIndex);
-        } catch (Exception ex) {
-            System.out.println("MidStrEx Err: " + ex.getMessage());
-        }
-        return result;
-    }
-
 }

src/main/java/lingtao/net/util/ZsPrice.java

@@ -1,5 +1,7 @@
 package lingtao.net.util;
 
+import com.aspose.pdf.Document;
+import com.aspose.pdf.optimization.OptimizationOptions;
 import lingtao.net.bean.Product;
 import org.springframework.util.StringUtils;
 
@@ -112,6 +114,9 @@ public class ZsPrice {
 
     }
 
+
+
+
     public int[] twoSum(int[] nums, int target) {
 
         List<Integer> list = new ArrayList<>();