diff --git a/src/main/java/com/chinaunicom/mall/ebtp/extend/crypconfigure/crypto/helper/Utils.java b/src/main/java/com/chinaunicom/mall/ebtp/extend/crypconfigure/crypto/helper/Utils.java
index ccd6c3f..f4ac2e1 100644
--- a/src/main/java/com/chinaunicom/mall/ebtp/extend/crypconfigure/crypto/helper/Utils.java
+++ b/src/main/java/com/chinaunicom/mall/ebtp/extend/crypconfigure/crypto/helper/Utils.java
@@ -40,6 +40,7 @@ import java.util.Properties;
 import java.util.UUID;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
+import java.util.stream.Stream;
 
 import static java.lang.String.format;
 import static java.nio.charset.StandardCharsets.UTF_8;
@@ -97,20 +98,22 @@ public final class Utils {
         }
 
         StringBuilder hashBuilder = new StringBuilder(hash);
-        Files.walk(projectPath)
-                .sorted(Comparator.naturalOrder())
-                .filter(Files::isRegularFile)
-                .map(Path::toFile)
-                .forEach(file -> {
-                    try {
-                        byte[] buf = readFile(file);
-                        byte[] toHash = Arrays.concatenate(buf, hashBuilder.toString().getBytes(UTF_8));
-                        hashBuilder.setLength(0);
-                        hashBuilder.append(Hex.toHexString(hash(toHash, new SHA3Digest())));
-                    } catch (IOException ex) {
-                        throw new RuntimeException(format("Error while reading file %s", file.getAbsolutePath()), ex);
-                    }
-                });
+        try (Stream<Path> walk = Files.walk(projectPath)) {
+            walk.sorted(Comparator.naturalOrder())
+                    .filter(Files::isRegularFile)
+                    .map(Path::toFile)
+                    .forEach(file -> {
+                        try {
+                            byte[] buf = readFile(file);
+                            byte[] toHash = Arrays.concatenate(buf, hashBuilder.toString().getBytes(UTF_8));
+                            hashBuilder.setLength(0);
+                            hashBuilder.append(Hex.toHexString(hash(toHash, new SHA3Digest())));
+                        } catch (IOException ex) {
+                            throw new RuntimeException(format("Error while reading file %s", file.getAbsolutePath()), ex);
+                        }
+                    });
+        }
+
 
         // If original hash and final hash are the same, it indicates that no new contents were found
         if (hashBuilder.toString().equals(hash)) {
@@ -240,10 +243,11 @@ public final class Utils {
             if (file.isDirectory()) {
                 Path rootPath = Paths.get(file.getAbsolutePath());
 
-                Files.walk(rootPath, FileVisitOption.FOLLOW_LINKS)
-                        .sorted(Comparator.reverseOrder())
-                        .map(Path::toFile)
-                        .forEach(File::delete);
+                try (Stream<Path> walk = Files.walk(rootPath, FileVisitOption.FOLLOW_LINKS)) {
+                    walk.sorted(Comparator.reverseOrder())
+                            .map(Path::toFile)
+                            .forEach(File::delete);
+                }
             } else {
                 file.delete();
             }
@@ -296,7 +300,7 @@ public final class Utils {
         }
 
         Properties props = new Properties();
-        Pattern p = Pattern.compile("([^:]+)[:]//([^:]+)[:]([0-9]+)", Pattern.CASE_INSENSITIVE);
+        final Pattern p = Pattern.compile("([^:]+)[:]//([^:]+)[:]([0-9]+)", Pattern.CASE_INSENSITIVE);
         Matcher m = p.matcher(url);
         if (m.matches()) {
             props.setProperty("protocol", m.group(1));
diff --git a/src/main/java/com/chinaunicom/mall/ebtp/extend/signature/service/impl/ExpertSignatureServiceImpl.java b/src/main/java/com/chinaunicom/mall/ebtp/extend/signature/service/impl/ExpertSignatureServiceImpl.java
index 12fcc34..722b64e 100644
--- a/src/main/java/com/chinaunicom/mall/ebtp/extend/signature/service/impl/ExpertSignatureServiceImpl.java
+++ b/src/main/java/com/chinaunicom/mall/ebtp/extend/signature/service/impl/ExpertSignatureServiceImpl.java
@@ -1,6 +1,7 @@
 package com.chinaunicom.mall.ebtp.extend.signature.service.impl;
 
 
+import cn.hutool.core.exceptions.ExceptionUtil;
 import cn.hutool.core.io.FileUtil;
 import com.aspose.words.FontSettings;
 import com.aspose.words.License;
@@ -79,7 +80,7 @@ public class ExpertSignatureServiceImpl implements ExpertSignatureService {
         try {
             pdf = mergeWord(word, expertSign, path);
         } catch (IOException e) {
-            e.printStackTrace();
+            log.info(ExceptionUtil.stacktraceToString(e));
         }
 
         //上传pdf到文档中心
@@ -123,18 +124,22 @@ public class ExpertSignatureServiceImpl implements ExpertSignatureService {
         }
 
         File f = new File(path + "merged.pdf");
-        FileOutputStream fos = new FileOutputStream(f);
+        FileOutputStream fos = null;
         FontSettings.getDefaultInstance().setFontsFolder(fontAddress, true);
         try {
+            fos = new FileOutputStream(f);
             com.aspose.words.Document doc = new com.aspose.words.Document(path + "merged.docx");
             doc.save(fos, SaveFormat.PDF);
         } catch (Exception e) {
-            e.printStackTrace();
+            log.info(ExceptionUtil.stacktraceToString(e));
         } finally {
             source.close();
             addObj.close();
-            fos.flush();
-            fos.close();
+            if (fos != null) {
+                fos.flush();
+                fos.close();
+            }
+
         }
 
         long l1 = System.currentTimeMillis();
@@ -151,7 +156,7 @@ public class ExpertSignatureServiceImpl implements ExpertSignatureService {
             license.setLicense(is);
             result = true;
         } catch (Exception e) {
-            e.printStackTrace();
+            log.info(ExceptionUtil.stacktraceToString(e));
         }
         return result;
     }
@@ -184,7 +189,7 @@ public class ExpertSignatureServiceImpl implements ExpertSignatureService {
             template.writeToFile(docPath);
             fis = new FileInputStream(new File(docPath));
         } catch (IOException e) {
-            e.printStackTrace();
+            log.info(ExceptionUtil.stacktraceToString(e));
         }
 
         return fis;
@@ -210,12 +215,12 @@ public class ExpertSignatureServiceImpl implements ExpertSignatureService {
                     b[i] += 256;
                 }
             }
-            OutputStream out = new FileOutputStream(imgFilePath);
-            out.write(b);
-            out.flush();
-            out.close();
+            try (OutputStream out = new FileOutputStream(imgFilePath)) {
+                out.write(b);
+            }
+
         } catch (Exception e) {
-            e.printStackTrace();
+            log.info(ExceptionUtil.stacktraceToString(e));
         }
 
     }