Created
February 25, 2015 00:34
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| <!DOCTYPE html> | |
| <html lang="ja" | |
| xmlns:th="http://www.thymeleaf.org"> | |
| <head> | |
| <meta charset="UTF-8"/> | |
| <title></title> | |
| <link rel="stylesheet" href="../../resources/bower_components/bootstrap/dist/css/bootstrap.min.css" th:href="@{/bower_components/bootstrap/dist/css/bootstrap.min.css}"/> | |
| </head> | |
| <body> | |
| <div class="container"> | |
| <nav class="clearfix" th:fragment="pagination"> | |
| <ul class="pagination"> | |
| <li th:class="${!pagination.hasPrev()} ? disabled"> | |
| <a href="javascript:void(0);" aria-label="Previous" th:href="${pagination.hasPrev()} ? ${pagination.getUrlForOtherPage(#httpServletRequest, pagination.getPage() - 1)} : 'javascript:void(0);'"> | |
| <span aria-hidden="true">«</span> | |
| </a> | |
| </li> | |
| <li th:each="page : ${pagination.getPages()}" th:class="${page == pagination.getPage()} ? 'active' : (${page == -1} ? 'disabled')"> | |
| <a href="javascript:void(0);" th:if="${page != -1}" th:text="${page}" th:href="${page != pagination.getPage()} ? ${pagination.getUrlForOtherPage(#httpServletRequest, page)} : 'javascript:void(0);'">1</a> | |
| <a href="javascript:void(0);" th:unless="${page != -1}" th:text="...">...</a> | |
| </li> | |
| <li th:class="${!pagination.hasNext()} ? disabled"> | |
| <a href="javascript:void(0)" aria-label="Next" th:href="${pagination.hasNext()} ? ${pagination.getUrlForOtherPage(#httpServletRequest, pagination.getPage() + 1)} : 'javascript:void(0);'"> | |
| <span aria-hidden="true">»</span> | |
| </a> | |
| </li> | |
| </ul> | |
| </nav> | |
| </div> | |
| <script src="../../resources/bower_components/jquery/dist/jquery.min.js" th:src="@{/bower_components/jquery/dist/jquery.min.js}"></script> | |
| <script src="../../resources/bower_components/bootstrap/dist/js/bootstrap.min.js" th:src="@{/bower_components/bootstrap/dist/js/bootstrap.min.js}"></script> | |
| </body> | |
| </html> |
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| package com.github.laughingman7743.util; | |
| import org.apache.commons.lang3.StringUtils; | |
| import javax.servlet.http.HttpServletRequest; | |
| import java.io.UnsupportedEncodingException; | |
| import java.net.URLEncoder; | |
| import java.util.LinkedList; | |
| import java.util.List; | |
| import java.util.Map; | |
| public class SimplePagination { | |
| public static final String DEFAULT_ENCODING = "UTF-8"; | |
| public static final String URL_PARAM_PAGE = "page"; | |
| public static final String URL_PARAM_PERPAGE = "max"; | |
| public static final int LEFT_EDGE = 2; | |
| public static final int RIGHT_EDGE = 2; | |
| public static final int LEFT_CURRENT = 2; | |
| public static final int RIGHT_CURRENT = 3; | |
| private final long page; | |
| private final long perPage; | |
| private final long totalCount; | |
| public SimplePagination(long page, long perPage, long totalCount) { | |
| this.page = page; | |
| this.perPage = perPage; | |
| this.totalCount = totalCount; | |
| } | |
| public long getPage() { | |
| return this.page; | |
| } | |
| public long getPerPage() { | |
| return this.perPage; | |
| } | |
| public long getTotalCount() { | |
| return this.totalCount; | |
| } | |
| public long getTotalPage() { | |
| return (long) Math.ceil(this.totalCount / (double) this.perPage); | |
| } | |
| public boolean hasPrev() { | |
| return this.page > 1; | |
| } | |
| public boolean hasNext() { | |
| return this.page < getTotalPage(); | |
| } | |
| public long getFirstPage() { | |
| return this.totalCount == 0 ? 0 : ((this.page - 1) * this.perPage) + 1; | |
| } | |
| public long getLastPage() { | |
| long last = this.page * this.perPage; | |
| return last < this.totalCount ? last : this.totalCount; | |
| } | |
| public List<Long> getPages() { | |
| return getPages(LEFT_EDGE, LEFT_CURRENT, RIGHT_CURRENT, RIGHT_EDGE); | |
| } | |
| public List<Long> getPages(int leftEdge, int leftCurrent, int rightCurrent, int rightEdge) { | |
| long last = 0; | |
| long pages = getTotalPage(); | |
| List<Long> result = new LinkedList<>(); | |
| for(long i = 1; i <= pages; i ++) { | |
| if((i <= leftEdge) || | |
| ((i > (this.page - leftCurrent - 1)) && (i < (this.page + rightCurrent))) || | |
| (i > pages - rightEdge)) { | |
| if(last + 1 != i) { | |
| result.add(-1L); | |
| } | |
| result.add(i); | |
| last = i; | |
| } | |
| } | |
| return result; | |
| } | |
| public String getUrlForOtherPage(HttpServletRequest request, long page) | |
| throws UnsupportedEncodingException { | |
| return getUrlForOtherPage(request, page, DEFAULT_ENCODING); | |
| } | |
| public String getUrlForOtherPage(HttpServletRequest request, long page, String encoding) | |
| throws UnsupportedEncodingException{ | |
| Map<String, String[]> params = request.getParameterMap(); | |
| StringBuilder builder = new StringBuilder(); | |
| builder.append(request.getRequestURI()); | |
| builder.append("?"); | |
| for(Map.Entry<String, String[]> entry : params.entrySet()) { | |
| String key = entry.getKey(); | |
| for(String value : entry.getValue()) { | |
| if(!StringUtils.equals(URL_PARAM_PAGE, key)) { | |
| builder.append(URLEncoder.encode(key, encoding)); | |
| builder.append("="); | |
| builder.append(URLEncoder.encode(value, encoding)); | |
| builder.append("&"); | |
| } | |
| } | |
| } | |
| builder.append(URL_PARAM_PAGE); | |
| builder.append("="); | |
| builder.append(page); | |
| return builder.toString(); | |
| } | |
| } |
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