Java分页工具类及其使用（示例分享）

Pager.java

package pers.kangxu.datautils.common;
import java.io.Serializable;
import java.util.List;

public class Pager implements Serializable {
 
 private static final long serialVersionUID = 4542617637761955078L;
 
 private int currentPage = 1;
 
 private int pageSize = 10;
 
 private int pageTotal;
 
 private int recordTotal = 0;
 
 private int previousPage;
 
 private int nextPage;
 
 private int firstPage = 1;
 
 private int lastPage;
 
 private List content;
 // 以下set方式是需要赋值的
 
 public void setCurrentPage(int currentPage) {
 this.currentPage = currentPage;
 }
 
 public void setPageSize(int pageSize) {
 this.pageSize = pageSize;
 }
 
 public void setRecordTotal(int recordTotal) {
 this.recordTotal = recordTotal;
 otherAttr();
 }
 
 public void setContent(List content) {
 this.content = content;
 }
 
 public void otherAttr() {
 // 总页数
 this.pageTotal = this.recordTotal % this.pageSize > 0 ? this.recordTotal / this.pageSize + 1 : this.recordTotal / this.pageSize;
 // 第一页
 this.firstPage = 1;
 // 最后一页
 this.lastPage = this.pageTotal;
 // 前一页
 if (this.currentPage > 1) {
 this.previousPage = this.currentPage - 1;
 } else {
 this.previousPage = this.firstPage;
 }
 // 下一页
 if (this.currentPage < this.lastPage) {
 this.nextPage = this.currentPage + 1;
 } else {
 this.nextPage = this.lastPage;
 }
 }
 // 放开私有属性
 public int getCurrentPage() {
 return currentPage;
 }
 public int getPageSize() {
 return pageSize;
 }
 public int getPageTotal() {
 return pageTotal;
 }
 public int getRecordTotal() {
 return recordTotal;
 }
 public int getPreviousPage() {
 return previousPage;
 }
 public int getNextPage() {
 return nextPage;
 }
 public int getFirstPage() {
 return firstPage;
 }
 public int getLastPage() {
 return lastPage;
 }
 public List getContent() {
 return content;
 }
 @Override
 public String toString() {
 return "Pager [currentPage=" + currentPage + ", pageSize=" + pageSize
 + ", pageTotal=" + pageTotal + ", recordTotal=" + recordTotal
 + ", previousPage=" + previousPage + ", nextPage=" + nextPage
 + ", firstPage=" + firstPage + ", lastPage=" + lastPage
 + ", content=" + content + "]";
 }
}

使用 PagerTester.java

package pers.kangxu.datautils.utils;
import java.util.ArrayList;
import java.util.List;
import pers.kangxu.datautils.common.Pager;

public class PagerTester {
 public static void main(String[] args) {
 Pager pager = new Pager();
 List content = new ArrayList();
 content.add("str1");
 content.add("str2");
 content.add("str3");
 content.add("str4");
 content.add("str5");
 content.add("str6");
 content.add("str7");
 content.add("str8");
 content.add("str9");
 content.add("str10");
 pager.setCurrentPage(1);
 pager.setPageSize(10);
 pager.setRecordTotal(62);
 pager.setContent(content);
 System.out.println(pager);
 }
}

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