diff --git a/src/main/java/com/dsideal/sso/Interceptor/EmptyInterceptor.java b/src/main/java/com/dsideal/sso/Interceptor/EmptyInterceptor.java
index 44d54b5..21bb42e 100644
--- a/src/main/java/com/dsideal/sso/Interceptor/EmptyInterceptor.java
+++ b/src/main/java/com/dsideal/sso/Interceptor/EmptyInterceptor.java
@@ -25,7 +25,7 @@ public class EmptyInterceptor implements Interceptor {
     public void noEmpty(EmptyInterface annotation, Invocation inv) {
         Controller con = inv.getController();
         String header = con.getHeader("Content-Type"); //取出head头
-        if (header != null && header.indexOf("multipart/form-data") != -1) { //判断是否是form-data
+        if (header != null && header.contains("multipart/form-data")) { //判断是否是form-data
             inv.invoke();
         }
         String[] value = annotation.value();