优化代码

4dkankan-common-utils/src/main/java/com/fdkankan/common/util/FileUtils.java

@@ -266,7 +266,7 @@ public class FileUtils {
     }
 
     public static void writeFile(String filePath,String str){
-        FileUtils.writeFile(filePath,str);
+        FileUtil.writeString(str,filePath,StandardCharsets.UTF_8);
     }
 
     /**