diff --git a/src/main/java/im/zhaojun/zfile/exception/GlobleExceptionHandler.java b/src/main/java/im/zhaojun/zfile/exception/GlobleExceptionHandler.java
index 1c1a951..460c5e1 100644
--- a/src/main/java/im/zhaojun/zfile/exception/GlobleExceptionHandler.java
+++ b/src/main/java/im/zhaojun/zfile/exception/GlobleExceptionHandler.java
@@ -4,7 +4,6 @@ import im.zhaojun.zfile.model.support.ResultBean;
 import org.apache.catalina.connector.ClientAbortException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import org.springframework.http.HttpStatus;
 import org.springframework.web.HttpMediaTypeNotAcceptableException;
 import org.springframework.web.bind.annotation.ControllerAdvice;
 import org.springframework.web.bind.annotation.ExceptionHandler;
@@ -42,6 +41,16 @@ public class GlobleExceptionHandler {
         // }
     }
 
+    /**
+     * 文件预览异常
+     */
+    @ExceptionHandler({PasswordVerifyException.class})
+    @ResponseBody
+    @ResponseStatus
+    public ResultBean passwordVerifyException(PasswordVerifyException ex) {
+        return ResultBean.error(ex.getMessage());
+    }
+
 
     /**
      * 文件预览异常
@@ -67,7 +76,7 @@ public class GlobleExceptionHandler {
 
     @ExceptionHandler
     @ResponseBody
-    @ResponseStatus(code= HttpStatus.INTERNAL_SERVER_ERROR)
+    @ResponseStatus
     public ResultBean searchDisableExceptionHandler(Exception e) {
         log.error(e.getMessage(), e);
 
diff --git a/src/main/java/im/zhaojun/zfile/exception/InvalidShortLinkException.java b/src/main/java/im/zhaojun/zfile/exception/InvalidShortLinkException.java
new file mode 100644
index 0000000..1569218
--- /dev/null
+++ b/src/main/java/im/zhaojun/zfile/exception/InvalidShortLinkException.java
@@ -0,0 +1,26 @@
+package im.zhaojun.zfile.exception;
+
+/**
+ * 无效的直链异常
+ * @author zhaojun
+ */
+public class InvalidShortLinkException extends RuntimeException {
+    public InvalidShortLinkException() {
+    }
+
+    public InvalidShortLinkException(String message) {
+        super(message);
+    }
+
+    public InvalidShortLinkException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public InvalidShortLinkException(Throwable cause) {
+        super(cause);
+    }
+
+    public InvalidShortLinkException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+        super(message, cause, enableSuppression, writableStackTrace);
+    }
+}
diff --git a/src/main/java/im/zhaojun/zfile/exception/NotAllowedDownloadException.java b/src/main/java/im/zhaojun/zfile/exception/NotAllowedDownloadException.java
new file mode 100644
index 0000000..9d9407e
--- /dev/null
+++ b/src/main/java/im/zhaojun/zfile/exception/NotAllowedDownloadException.java
@@ -0,0 +1,26 @@
+package im.zhaojun.zfile.exception;
+
+/**
+ * 文件不允许下载异常
+ * @author zhaojun
+ */
+public class NotAllowedDownloadException extends RuntimeException {
+    public NotAllowedDownloadException() {
+    }
+
+    public NotAllowedDownloadException(String message) {
+        super(message);
+    }
+
+    public NotAllowedDownloadException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public NotAllowedDownloadException(Throwable cause) {
+        super(cause);
+    }
+
+    public NotAllowedDownloadException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+        super(message, cause, enableSuppression, writableStackTrace);
+    }
+}
diff --git a/src/main/java/im/zhaojun/zfile/exception/NotExistFileException.java b/src/main/java/im/zhaojun/zfile/exception/NotExistFileException.java
index 41ef396..ed63c11 100644
--- a/src/main/java/im/zhaojun/zfile/exception/NotExistFileException.java
+++ b/src/main/java/im/zhaojun/zfile/exception/NotExistFileException.java
@@ -1,6 +1,7 @@
 package im.zhaojun.zfile.exception;
 
 /**
+ * 不存在的文件异常
  * @author zhaojun
  */
 public class NotExistFileException extends RuntimeException {
diff --git a/src/main/java/im/zhaojun/zfile/exception/PasswordVerifyException.java b/src/main/java/im/zhaojun/zfile/exception/PasswordVerifyException.java
new file mode 100644
index 0000000..27d397c
--- /dev/null
+++ b/src/main/java/im/zhaojun/zfile/exception/PasswordVerifyException.java
@@ -0,0 +1,27 @@
+package im.zhaojun.zfile.exception;
+
+/**
+ * 密码校验失败异常
+ * @author zhaojun
+ */
+public class PasswordVerifyException extends RuntimeException {
+
+    public PasswordVerifyException() {
+    }
+
+    public PasswordVerifyException(String message) {
+        super(message);
+    }
+
+    public PasswordVerifyException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public PasswordVerifyException(Throwable cause) {
+        super(cause);
+    }
+
+    public PasswordVerifyException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+        super(message, cause, enableSuppression, writableStackTrace);
+    }
+}
\ No newline at end of file