diff --git a/src/main/kotlin/cn/tursom/core/HttpRequest.kt b/src/main/kotlin/cn/tursom/core/HttpRequest.kt
index a6eb1ea..2beed33 100644
--- a/src/main/kotlin/cn/tursom/core/HttpRequest.kt
+++ b/src/main/kotlin/cn/tursom/core/HttpRequest.kt
@@ -28,8 +28,8 @@ object HttpRequest {
       if (startIndex < 0) {
         Charsets.UTF_8
       } else {
-        var endIndex = contentType.indexOf("charset=", startIndex = startIndex, ignoreCase = true) + 8
-        if (endIndex < 8) endIndex = contentType.length
+        var endIndex = contentType.indexOf(";", startIndex = startIndex, ignoreCase = true)
+        if (endIndex < 0) endIndex = contentType.length
         if (startIndex == endIndex) {
           Charsets.UTF_8
         } else {
diff --git a/src/main/kotlin/cn/tursom/core/Tools.kt b/src/main/kotlin/cn/tursom/core/Tools.kt
index b61e708..ccfe572 100644
--- a/src/main/kotlin/cn/tursom/core/Tools.kt
+++ b/src/main/kotlin/cn/tursom/core/Tools.kt
@@ -5,8 +5,6 @@ package cn.tursom.core
 import sun.misc.Unsafe
 import java.io.ByteArrayInputStream
 import java.io.ByteArrayOutputStream
-import java.io.File
-import java.io.IOException
 import java.lang.reflect.Field
 import java.lang.reflect.ParameterizedType
 import java.lang.reflect.Type
@@ -158,9 +156,9 @@ fun ByteArray.sha1(): ByteArray = sha1.digest(this)
 fun String.sha1(): String = toByteArray().sha1().toHexString()
 
 //获取sha384加密对象
-val shA384 by lazy { MessageDigest.getInstance("SHA-384")!! }
+val sha384 by lazy { MessageDigest.getInstance("SHA-384")!! }
 
-fun ByteArray.sha384(): ByteArray = shA384.digest(this)
+fun ByteArray.sha384(): ByteArray = sha384.digest(this)
 
 fun String.sha384(): String = toByteArray().sha384().toHexString()