diff --git a/app/src/main/java/io/legado/app/help/JsExtensions.kt b/app/src/main/java/io/legado/app/help/JsExtensions.kt
index d321f57fb..9e4bca018 100644
--- a/app/src/main/java/io/legado/app/help/JsExtensions.kt
+++ b/app/src/main/java/io/legado/app/help/JsExtensions.kt
@@ -1,5 +1,6 @@
 package io.legado.app.help
 
+import android.util.Base64
 import io.legado.app.model.analyzeRule.AnalyzeUrl
 import io.legado.app.utils.EncoderUtils
 import io.legado.app.utils.MD5Utils
@@ -29,8 +30,8 @@ object JsExtensions {
         return EncoderUtils.base64Decode(str)
     }
 
-    fun base64Encode(str: String): String? {
-        return EncoderUtils.base64Encode(str)
+    fun base64Encode(str: String, flags: Int = Base64.NO_WRAP): String? {
+        return EncoderUtils.base64Encode(str, flags)
     }
 
     fun strToMd5By32(str: String): String? {
diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
index b4bb0276e..82a767ab5 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeRule.kt
@@ -1,6 +1,7 @@
 package io.legado.app.model.analyzeRule
 
 import android.text.TextUtils
+import android.util.Base64
 import androidx.annotation.Keep
 import io.legado.app.constant.AppConst.SCRIPT_ENGINE
 import io.legado.app.constant.Pattern.JS_PATTERN
@@ -576,8 +577,8 @@ class AnalyzeRule(private var book: BaseBook? = null) {
         return EncoderUtils.base64Decode(str)
     }
 
-    fun base64Encode(str: String): String? {
-        return EncoderUtils.base64Encode(str)
+    fun base64Encode(str: String, flags: Int = Base64.NO_WRAP): String? {
+        return EncoderUtils.base64Encode(str, flags)
     }
 
     fun strToMd5By32(str: String): String? {
diff --git a/app/src/main/java/io/legado/app/utils/EncoderUtils.kt b/app/src/main/java/io/legado/app/utils/EncoderUtils.kt
index 8e5c03522..4858113e3 100644
--- a/app/src/main/java/io/legado/app/utils/EncoderUtils.kt
+++ b/app/src/main/java/io/legado/app/utils/EncoderUtils.kt
@@ -33,7 +33,7 @@ object EncoderUtils {
         }
     }
 
-    fun base64Encode(str: String): String? {
-        return Base64.encodeToString(str.toByteArray(), Base64.DEFAULT)
+    fun base64Encode(str: String, flags: Int = Base64.NO_WRAP): String? {
+        return Base64.encodeToString(str.toByteArray(), flags)
     }
 }
\ No newline at end of file