.

src/main/java/net/tccn/base/FileKit.java

@@ -38,11 +38,13 @@ public final class FileKit {
 
     /**
      * 拷贝文件/文件目录
-     * @param source
+     * @param source 源文件目录
-     * @param target
+     * @param target 目标目录
-     * @param linkPath
      */
-    public static void copyFiles(File source, File target, String linkPath) {
+    private static void copyFiles(File source, File target) {
+        copyFiles(source, target, "");
+    }
+    private static void copyFiles(File source, File target, String linkPath) {
         if (source.isDirectory()){
             final String _linkPath = linkPath + File.separator+ source.getName();
             asList(source.listFiles()).forEach(f->{

src/main/java/net/tccn/base/Liangs.java

@@ -1,7 +1,7 @@
 package net.tccn.base;
 
-import java.util.Objects;
+import java.lang.reflect.Array;
-import java.util.Set;
+import java.util.*;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -10,17 +10,59 @@ import java.util.stream.Stream;
  */
 public class Liangs {
 
-    public static <T> Set<T> streamConcat(Stream<T> ... streams) {
+    /**
+     * 将集合数组合并到一个Set<T> 集合中
+     * @param <T>     泛型
+     * @param streams 集合数组
+     * @return
+     */
+    public static <T> Stream<T> concat(Stream<T> ... streams) {
         Stream<T> stream = Stream.empty();
         for (int i = 0; i < streams.length; i++) {
             stream = Stream.concat(stream, streams[i]);
         }
-        return stream.collect(Collectors.toSet());
+        return stream;
     }
 
+    /**
+     * 将字符串第一个字母转大写
+     * @param str 待转换字符串
+     * @return
+     */
     public static String toUpperCaseFirst(String str) {
         Objects.requireNonNull(str);
         return str.substring(0, 1).toUpperCase() + str.substring(1);
     }
 
+    /**
+     * 转化集合为数组，带泛型支持
+     * @param values 集合
+     * @param <T>    泛型
+     * @return
+     */
+    public static <T> T[] toArray(Collection<T> values) {
+        if (values == null || values.size() == 0)
+            throw new UnsupportedOperationException("Not supported yet.");
+        Class<?> clazz = null;
+        for (T entity : values) {
+            clazz = entity.getClass();
+            break;
+        }
+        return values.toArray((T[]) Array.newInstance(clazz, values.size()));
+    }
+
+    /**
+     * 转化集合为数组，带泛型支持
+     * @param values 集合
+     * @param <T>    泛型
+     * @return
+     */
+    public static <T> T[] toArray(Stream<T> values) {
+        if (values == null || values.count() == 0)
+            throw new UnsupportedOperationException("Not supported yet.");
+
+        List<T> list = values.collect(Collectors.toList());
+        return toArray(list);
+    }
+
 }

src/main/java/net/tccn/base/MetaKit.java

@@ -399,7 +399,7 @@ public final class MetaKit {
         Set<String> allAlias;
 
         if (!all) {
-            allAlias = Liangs.streamConcat(
+            allAlias = Liangs.concat(
                     metaService.getFilters().stream().map(f -> {
                         String col = (String) f.getName();
                         String alias = col.split("[.]")[0];
@@ -408,7 +408,7 @@ public final class MetaKit {
                     metaService.getExports().stream().map(x -> x.get("col").split("[.]")[0]),
                     metaService.getShows().stream().map(x -> x.get("col").split("[.]")[0])/*,  todo: xxx
                     metaService.getEdits().stream().map(x -> x.split("[.]")[0])*/
-            );
+            ).collect(Collectors.toSet());
 
         } else {
             allAlias = new HashSet<>();