添加代码生成所需的工具类

mes/hd/nladmin-system/src/main/java/org/nl/utils/PageUtil.java

@@ -0,0 +1,70 @@
+/*
+ *  Copyright 2019-2020 Zheng Jie
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.nl.utils;
+
+import org.springframework.data.domain.Page;
+
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 分页工具
+ * @author Zheng Jie
+ * @date 2018-12-10
+ */
+public class PageUtil extends cn.hutool.core.util.PageUtil {
+
+    /**
+     * List 分页
+     */
+    public static List toPage(int page, int size , List list) {
+        int fromIndex = page * size;
+        int toIndex = page * size + size;
+        if(fromIndex > list.size()){
+            return new ArrayList();
+        } else if(toIndex >= list.size()) {
+            return list.subList(fromIndex,list.size());
+        } else {
+            return list.subList(fromIndex,toIndex);
+        }
+    }
+
+    /**
+     * Page 数据处理，预防redis反序列化报错
+     */
+    public static Map<String,Object> toPage(Page page) {
+        Map<String,Object> map = new LinkedHashMap<>(2);
+        map.put("content",page.getContent());
+        map.put("totalElements",page.getTotalElements());
+        return map;
+    }
+
+
+    /**
+     * 自定义分页
+     */
+    public static Map<String,Object> toPage(Object object, Object totalElements) {
+        Map<String,Object> map = new LinkedHashMap<>(2);
+        map.put("content",object);
+        map.put("totalElements",totalElements);
+        return map;
+    }
+
+
+
+}