商品 SPU + SKU 添加

common/common-framework/src/main/java/cn/iocoder/common/framework/util/StringUtil.java

@@ -0,0 +1,20 @@
+package cn.iocoder.common.framework.util;
+
+import org.springframework.util.StringUtils;
+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+
+public class StringUtil {
+
+    public static String join(Collection<?> coll, String delim) {
+        return StringUtils.collectionToDelimitedString(coll, delim);
+    }
+
+    public static List<String> split(String toSplit, String delim) {
+        String[] stringArray = StringUtils.tokenizeToStringArray(toSplit, delim);
+        return Arrays.asList(stringArray);
+    }
+
+}