根据多个专利号生成这些专利的说明书pdf首页，拼成的一个大pdf

PAS/src/main/java/cn/cslg/pas/service/patentPDF/PatentPDFService.java

@@ -6,7 +6,6 @@ import cn.cslg.pas.common.utils.FileUtils;
 import cn.cslg.pas.common.utils.StringUtils;
 import cn.cslg.pas.domain.PatentInstruction;
 import cn.cslg.pas.mapper.PatentInstructionMapper;
-import cn.cslg.pas.service.PatentInstructionService;
 import cn.cslg.pas.service.PatentService;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
@@ -16,12 +15,9 @@ import lombok.extern.slf4j.Slf4j;
 import org.apache.pdfbox.multipdf.PDFMergerUtility;
 import org.apache.pdfbox.multipdf.Splitter;
 import org.apache.pdfbox.pdmodel.PDDocument;
-import org.apache.pdfbox.rendering.ImageType;
-import org.apache.pdfbox.rendering.PDFRenderer;
 import org.springframework.stereotype.Service;
 
 import javax.servlet.http.HttpServletResponse;
-import java.awt.image.BufferedImage;
 import java.io.*;
 import java.util.ArrayList;
 import java.util.List;
@@ -77,11 +73,6 @@ public class PatentPDFService extends ServiceImpl<PatentInstructionMapper, Paten
         // 合并PDF
         pdfMerger.mergeDocuments();
 
-        //最后要记得删除所有pdf首页临时文件
-        for (String filePath : filePaths) {
-            new File(filePath).delete();
-        }
-
         InputStream fis = new BufferedInputStream(new FileInputStream(mergedFilePath));
         byte[] buffer = new byte[fis.available()];
         fis.read(buffer);
@@ -97,8 +88,11 @@ public class PatentPDFService extends ServiceImpl<PatentInstructionMapper, Paten
         toClient.flush();
         toClient.close();
 
-        //最后要记得删除合并后的pdf临时文件
-        new File(mergedFilePath).delete();
+        //最后要记得删除所有文件
+        for (String filePath : filePaths) {  //删除每个pdf首页文件
+            new File(filePath).delete();
+        }
+        new File(mergedFilePath).delete();  //删除合并的pdf文件
 
     }