Initial project

src/main/java/com/imyeyu/spring/bean/Page.java

@@ -0,0 +1,83 @@
+package com.imyeyu.spring.bean;
+
+import jakarta.validation.constraints.Max;
+import jakarta.validation.constraints.Min;
+import com.imyeyu.spring.mapper.BaseMapper;
+
+import java.util.LinkedHashMap;
+
+/**
+ * 抽象页面查询参数
+ *
+ * @author 夜雨
+ * @version 2023-06-02 14:47
+ */
+public class Page {
+
+	/** 下标 */
+	@Min(value = 0, message = "page.min_index")
+	protected int index = 0;
+
+	/** 数据量 */
+	@Max(value = 64, message = "page.max_size")
+	protected int size = 16;
+
+	/** 关键字 */
+	protected String keyword;
+
+	protected LinkedHashMap<String, BaseMapper.OrderType> orderMap;
+
+	public Page() {
+	}
+
+	public Page(int index, int size) {
+		this.index = index;
+		this.size = size;
+	}
+
+	public long getOffset() {
+		return (long) index * size;
+	}
+
+	public int getLimit() {
+		return size;
+	}
+
+	public int getIndex() {
+		return index;
+	}
+
+	public void setIndex(int index) {
+		this.index = index;
+	}
+
+	public int getSize() {
+		return size;
+	}
+
+	public void setSize(int size) {
+		this.size = size;
+	}
+
+	public String getKeyword() {
+		return keyword;
+	}
+
+	public void setKeyword(String keyword) {
+		this.keyword = keyword;
+	}
+
+	public LinkedHashMap<String, BaseMapper.OrderType> getOrderMap() {
+		return orderMap;
+	}
+
+	public void setOrderMap(LinkedHashMap<String, BaseMapper.OrderType> orderMap) {
+		this.orderMap = orderMap;
+	}
+
+	public static <T, P extends Page, R extends PageResult<T>> R toResult(BaseMapper<T, ?> pageMapper, P page, R result) {
+		result.setList(pageMapper.list(page.getOffset(), page.getLimit()));
+		result.setTotal(pageMapper.count());
+		return result;
+	}
+}