分页查询设备

fys-common/fys-common-core/pom.xml

@@ -93,6 +93,12 @@
             <groupId>org.lionsoul</groupId>
             <artifactId>ip2region</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.baomidou</groupId>
+            <artifactId>mybatis-plus-core</artifactId>
+            <version>3.5.12</version>
+            <scope>compile</scope>
+        </dependency>
 
     </dependencies>
 

fys-common/fys-common-core/src/main/java/com/fuyuanshen/common/core/domain/PageResult.java

@@ -0,0 +1,24 @@
+package com.fuyuanshen.common.core.domain;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * 分页结果封装类
+ * @author Zheng Jie
+ * @date 2018-11-23
+ * @param <T>
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class PageResult<T> implements Serializable {
+
+    private List<T> content;
+
+    private long totalElements;
+}

fys-common/fys-common-core/src/main/java/com/fuyuanshen/common/core/domain/ResponseVO.java

@@ -0,0 +1,64 @@
+package com.fuyuanshen.common.core.domain;
+
+import lombok.Data;
+
+/**
+ * @Description: 返回体
+ * @Author: WY
+ * @Date: 2025/6/2
+ **/
+@Data
+public class ResponseVO<T> {
+
+    private Integer code; // 成功:0  失败:-1
+    private String msg;
+    private T data;
+
+    public ResponseVO(Integer code, String msg, T data) {
+        this.code = code;
+        this.msg = msg;
+        this.data = data;
+    }
+
+    public ResponseVO(Integer code, String msg) {
+        this.code = code;
+        this.msg = msg;
+    }
+
+    // 静态方法，用于创建成功的响应
+    public static <T> ResponseVO<T> success() {
+        return new ResponseVO<>(0, "操作成功", null);
+    }
+
+    public static <T> ResponseVO<T> success(T data) {
+        return new ResponseVO<>(0, "操作成功", data);
+    }
+
+    public static <T> ResponseVO<T> success(String msg, T data) {
+        return new ResponseVO<>(0, msg, data);
+    }
+
+    // 静态方法，用于创建失败的响应
+    public static <T> ResponseVO<T> fail(String msg) {
+        return new ResponseVO<>(-1, msg, null);
+    }
+
+    public static <T> ResponseVO<T> fail(String msg, T data) {
+        return new ResponseVO<>(-1, msg, data);
+    }
+
+    // 链式方法 - 添加泛型支持
+    public <R> ResponseVO<R> withData(R data) {
+        return new ResponseVO<>(this.code, this.msg, data);
+    }
+
+    public ResponseVO<T> withMsg(String msg) {
+        this.msg = msg;
+        return this;
+    }
+
+    public ResponseVO<T> withCode(Integer code) {
+        this.code = code;
+        return this;
+    }
+}

fys-common/fys-common-core/src/main/java/com/fuyuanshen/common/core/utils/PageUtil.java

@@ -0,0 +1,73 @@
+/*
+ *  Copyright 2019-2025 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 com.fuyuanshen.common.core.utils;
+
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.fuyuanshen.common.core.domain.PageResult;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * 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 <T> List<T> paging(int page, int size , List<T> list) {
+        int fromIndex = page * size;
+        int toIndex = page * size + size;
+        if(fromIndex > list.size()){
+            return Collections.emptyList();
+        } else if(toIndex >= list.size()) {
+            return list.subList(fromIndex,list.size());
+        } else {
+            return list.subList(fromIndex,toIndex);
+        }
+    }
+
+    /**
+     * Page 数据处理
+     */
+    public static <T> PageResult<T> toPage(IPage<T> page) {
+        return new PageResult<>(page.getRecords(), page.getTotal());
+    }
+
+    /**
+     * 自定义分页
+     */
+    public static <T> PageResult<T> toPage(List<T> list) {
+        return new PageResult<>(list, list.size());
+    }
+
+    /**
+     * 返回空数据
+     */
+    public static <T> PageResult<T> noData () {
+        return new PageResult<>(null, 0);
+    }
+
+    /**
+     * 自定义分页
+     */
+    public static <T> PageResult<T> toPage(List<T> list, long totalElements) {
+        return new PageResult<>(list, totalElements);
+    }
+}