增加标准化路径

fine-commons-io/src/com/fr/third/org/apache/commons/io/FilenameUtils.java

@@ -195,6 +195,17 @@ public class FilenameUtils {
     public static String normalize(final String filename) {
         return doNormalize(filename, SYSTEM_SEPARATOR, true);
     }
+
+
+    /**
+     * Normalizes a path with unix separator, removing double and single dot path steps.
+     * @param filename the filename to normalize, null returns null
+     * @return the normalized filename, or null if invalid. Null bytes inside string will be removed
+     */
+    public static String standard(final String filename) {
+        return normalize(filename, true);
+    }
+
     /**
      * Normalizes a path, removing double and single dot path steps.
      * <p>