diff --git a/designer-base/src/main/java/com/fr/design/DesignerEnvManager.java b/designer-base/src/main/java/com/fr/design/DesignerEnvManager.java
index bd464d77e..7c37b13b8 100644
--- a/designer-base/src/main/java/com/fr/design/DesignerEnvManager.java
+++ b/designer-base/src/main/java/com/fr/design/DesignerEnvManager.java
@@ -310,8 +310,9 @@ public class DesignerEnvManager implements XMLReadable, XMLWriter {
     }
 
     private void createEnvFile(File envFile) {
+        FileWriter fileWriter = null;
         try {
-            FileWriter fileWriter = new FileWriter(envFile);
+            fileWriter = new FileWriter(envFile);
             File oldEnvFile = new File(ProductConstants.getEnvHome() + File.separator + ProductConstants.APP_NAME + "6-1" + "Env.xml");
             File envFile80 = new File(getEnvHome(VERSION_80) + File.separator + getEnvFile().getName());
             if (oldEnvFile.exists()) {
@@ -327,9 +328,17 @@ public class DesignerEnvManager implements XMLReadable, XMLWriter {
                 Utils.copyCharTo(stringReader, fileWriter);
                 stringReader.close();
             }
-            fileWriter.close();
+
         } catch (IOException e) {
             FineLoggerFactory.getLogger().error(e.getMessage(), e);
+        } finally {
+            if (null != fileWriter) {
+                try {
+                    fileWriter.close();
+                } catch (IOException e) {
+                    FineLoggerFactory.getLogger().error(e.getMessage(), e);
+                }
+            }
         }
     }
 
diff --git a/designer-base/src/main/java/com/fr/design/RestartHelper.java b/designer-base/src/main/java/com/fr/design/RestartHelper.java
index 6f1b77acb..7f2aeeb78 100644
--- a/designer-base/src/main/java/com/fr/design/RestartHelper.java
+++ b/designer-base/src/main/java/com/fr/design/RestartHelper.java
@@ -154,12 +154,12 @@ public class RestartHelper {
             deleteWhenDebug();
             return;
         }
-
+        RandomAccessFile randomAccessFile = null;
         try {
             try {
                 File restartLockFile = new File(StableUtils.pathJoin(StableUtils.getInstallHome(), "restart.lock"));
                 StableUtils.makesureFileExist(restartLockFile);
-                RandomAccessFile randomAccessFile = new RandomAccessFile(restartLockFile,"rw");
+                randomAccessFile = new RandomAccessFile(restartLockFile,"rw");
                 FileChannel restartLockFC = randomAccessFile.getChannel();
                 FileLock restartLock = restartLockFC.tryLock();
                 if(restartLock == null) {
@@ -176,6 +176,13 @@ public class RestartHelper {
         } catch (Exception e) {
             FineLoggerFactory.getLogger().error(e.getMessage(), e);
         } finally {
+            try {
+                if (null != randomAccessFile) {
+                    randomAccessFile.close();
+                }
+            } catch (IOException e) {
+                FineLoggerFactory.getLogger().error(e.getMessage(), e);
+            }
             DesignerContext.getDesignerFrame().exit();
         }
     }
diff --git a/designer-base/src/main/java/com/fr/design/extra/PluginUtils.java b/designer-base/src/main/java/com/fr/design/extra/PluginUtils.java
index 92a838864..1674616c9 100644
--- a/designer-base/src/main/java/com/fr/design/extra/PluginUtils.java
+++ b/designer-base/src/main/java/com/fr/design/extra/PluginUtils.java
@@ -85,24 +85,35 @@ public class PluginUtils {
     public static void downloadShopScripts(String id, Process<Double> p) throws Exception {
         HttpClient httpClient = new HttpClient(getDownloadPath(id));
         if (httpClient.getResponseCode() == HttpURLConnection.HTTP_OK) {
-            int totalSize = httpClient.getContentLength();
-            InputStream reader = httpClient.getResponseStream();
-            String temp = StableUtils.pathJoin(PluginConstants.DOWNLOAD_PATH, PluginConstants.TEMP_FILE);
-            StableUtils.makesureFileExist(new File(temp));
-            FileOutputStream writer = new FileOutputStream(temp);
-            byte[] buffer = new byte[PluginConstants.BYTES_NUM];
-            int bytesRead = 0;
-            int totalBytesRead = 0;
+            InputStream reader = null;
+            FileOutputStream writer = null;
+            try {
+                int totalSize = httpClient.getContentLength();
+                reader = httpClient.getResponseStream();
+                String temp = StableUtils.pathJoin(PluginConstants.DOWNLOAD_PATH, PluginConstants.TEMP_FILE);
+                StableUtils.makesureFileExist(new File(temp));
+                writer = new FileOutputStream(temp);
+                byte[] buffer = new byte[PluginConstants.BYTES_NUM];
+                int bytesRead = 0;
+                int totalBytesRead = 0;
 
-            while ((bytesRead = reader.read(buffer)) > 0) {
-                writer.write(buffer, 0, bytesRead);
-                buffer = new byte[PluginConstants.BYTES_NUM];
-                totalBytesRead += bytesRead;
-                p.process(totalBytesRead / (double) totalSize);
+                while ((bytesRead = reader.read(buffer)) > 0) {
+                    writer.write(buffer, 0, bytesRead);
+                    buffer = new byte[PluginConstants.BYTES_NUM];
+                    totalBytesRead += bytesRead;
+                    p.process(totalBytesRead / (double) totalSize);
+                }
+            }catch (Exception e){
+                throw new Exception();
+            }finally {
+                if(null != reader){
+                    reader.close();
+                }
+                if(null != writer){
+                    writer.flush();
+                    writer.close();
+                }
             }
-            reader.close();
-            writer.flush();
-            writer.close();
         } else {
             throw new com.fr.plugin.PluginVerifyException(com.fr.design.i18n.Toolkit.i18nText("Fine-Design_Basic_Plugin_Connect_Server_Error"));
         }
diff --git a/designer-base/src/main/java/com/fr/design/formula/FunctionConstants.java b/designer-base/src/main/java/com/fr/design/formula/FunctionConstants.java
index 3d0460e86..28bb98555 100644
--- a/designer-base/src/main/java/com/fr/design/formula/FunctionConstants.java
+++ b/designer-base/src/main/java/com/fr/design/formula/FunctionConstants.java
@@ -174,7 +174,7 @@ public final class FunctionConstants {
                 jarPath = StringUtils.perfectStart(jarPath, "/");
             }
 			
-			ZipFile zip;
+			ZipFile zip = null;
 			try {
 				zip = new ZipFile(jarPath);
 				Enumeration entries = zip.entries();
@@ -193,6 +193,14 @@ public final class FunctionConstants {
 				}
 			} catch (IOException e) {
                 FineLoggerFactory.getLogger().error(e.getMessage(), e);
+			} finally {
+				if(null != zip){
+					try {
+						zip.close();
+					} catch (IOException e) {
+						FineLoggerFactory.getLogger().error(e.getMessage(), e);
+					}
+				}
 			}
 		} else {
 			File dir = new File(filePath);
diff --git a/designer-base/src/main/java/com/fr/design/gui/syntax/ui/rsyntaxtextarea/CodeTemplateManager.java b/designer-base/src/main/java/com/fr/design/gui/syntax/ui/rsyntaxtextarea/CodeTemplateManager.java
index ddefec8b7..f57666a81 100644
--- a/designer-base/src/main/java/com/fr/design/gui/syntax/ui/rsyntaxtextarea/CodeTemplateManager.java
+++ b/designer-base/src/main/java/com/fr/design/gui/syntax/ui/rsyntaxtextarea/CodeTemplateManager.java
@@ -276,8 +276,9 @@ public class CodeTemplateManager {
 			temp.addAll(templates);
 
 			for (int i=0; i<newCount; i++) {
+				XMLDecoder d = null;
 				try {
-					XMLDecoder d = new XMLDecoder(new BufferedInputStream(
+					d = new XMLDecoder(new BufferedInputStream(
 						new FileInputStream(files[i])));
 					Object obj = d.readObject();
 					if (!(obj instanceof CodeTemplate)) {
@@ -291,6 +292,10 @@ public class CodeTemplateManager {
 					// an XML file not in the format expected by XMLDecoder.
 					// (e.g. CodeTemplates in an old format).
 					e.printStackTrace();
+				} finally {
+					if(null != d){
+						d.close();
+					}
 				}
 			}
 			templates = temp;