如何在JSP中以几种不同的方式对列表进行排序？

该SOEL标签维基描述的方式来做到这一点，而无需使用小脚本：使用EL函数来完成排序，然后使用该结果

items

forEach

函数类：

package org.hierax.ifdl.tags.player;public final class PlayerSort {    public static List<Player> sortByRank(List<Player> playerList) {        Collections.sort(playerList, new PlayerSortByRank());        return playerList;    }    public static List<Player> sortByAlias(List<Player> playerList) {        Collections.sort(playerList, new PlayerSortByAlias());        return playerList;    }}

TLD：

<?xml version="1.0" encoding="UTF-8" ?><taglib     xmlns="http://java.sun.com/xml/ns/javaee"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd"    version="2.1">    <display-name>Player Functions</display-name>    <tlib-version>1.0</tlib-version>    <short-name>player</short-name>    <uri>org.hierax.ifdl.tags</uri>    <function>        <name>sortByRank</name>        <function-class>org.hierax.ifdl.tags.player.PlayerSort</function-class>        <function-signature>java.util.List sortByRank(java.util.List)</function-signature>    </function>    <function>        <name>sortByAlias</name>        <function-class>org.hierax.ifdl.tags.player.PlayerSort</function-class>        <function-signature>java.util.List sortByAlias(java.util.List)</function-signature>    </function></taglib>

菜单JSP：

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%@ taglib prefix="p" uri="/WEB-INF/player.tld" %><h1>Players</h1><p>    <c:forEach items="${p:sortByAlias(model.players)}" var="player">        <a href="<c:url value="/player/${player.id}"/>" >${player.alias}</a>    </c:forEach></p>