jetbrick-commons/src/main/java/jetbrick/io/PathUtils.java
public static String separatorsToSystem(String path) {
        if (path == null) {
            return null;
        }
        if (File.separatorChar == '\\') {
            return separatorsToWindows(path);
        }
        return separatorsToUnix(path);
    }
public static String separatorsToSystem(String path) {
        if (path == null) {
            return null;
        }
        if (File.separatorChar == '\\') {
            return separatorsToWindows(path);
        }
        return separatorsToUnix(path);
    }
转为系统默认样式的路径.