jstl根据字符串进行判断

最新推荐文章于 2023-06-09 12:58:00 发布
转载 最新推荐文章于 2023-06-09 12:58:00 发布 · 179 阅读 · 0 ·
CC 4.0 BY-SA版权
原文链接：https://yq.aliyun.com/articles/58115
文章标签：

#json

惯例：

我是温浩然：

先说需求：

调用接口，传过json数据，对其进行解析，数据中，有url一栏，不确定是    mp4,还是jpg。

需要分析这个url，然后再页面上，根据类型显示图片或者视频。然后来看看图片或者视频是否合格。

先贴json中的数据：

{"code":"A00000","data":{"tasks":[{"id":331,"bid":1412,"cardId":3,"score":6,"taskType":"health","url":"http://www.baidu.com/img/20150921/5fe010e210710dcec6767f5ce9b4cbfb.jpg","stageId":1,"replaceScore":0,"topScore":0,"reviewNum":1,"img":"","stageSort":1,"noPass":false},{"id":330,"bid":1412,"cardId":5,"score":6,"taskType":"active","url":"http://www.baidu.com/img/20150921/3d56c80bcdddbc71a02f567dc902e138.jpg","stageId":1,"replaceScore":0,"topScore":0,"reviewNum":1,"img":"","stageSort":1,"noPass":true},{"id":327,"bid":70,"cardId":317,"score":2,"taskType":"active","url":"http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg","stageId":29,"replaceScore":0,"topScore":0,"reviewNum":0,"img":"","stageSort":23,"noPass":false},{"id":326,"bid":70,"cardId":316,"score":2,"taskType":"active","url":"http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg","stageId":29,"replaceScore":0,"topScore":0,"reviewNum":0,"img":"","stageSort":23,"noPass":false},{"id":325,"bid":70,"cardId":315,"score":2,"taskType":"active","url":"http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg","stageId":29,"replaceScore":0,"topScore":0,"reviewNum":0,"img":"","stageSort":23,"noPass":false},{"id":324,"bid":70,"cardId":313,"score":2,"taskType":"active","url":"http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg","stageId":29,"replaceScore":0,"topScore":0,"reviewNum":0,"img":"","stageSort":23,"noPass":false},{"id":323,"bid":70,"cardId":312,"score":2,"taskType":"health","url":"http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg","stageId":29,"replaceScore":0,"topScore":0,"reviewNum":0,"img":"","stageSort":23,"noPass":false},{"id":318,"bid":31,"cardId":151,"score":2,"taskType":"health","url":"http://www.baidu.com/baby/20150918/3371567547BE822BF20C2BF24E549AA8.mp4","stageId":1,"replaceScore":0,"topScore":0,"reviewNum":0,"img":"http://www.baidu.com/img/20150918/E46205BC0EAF81B1E76ACD9BB59F1E2D.jpg","stageSort":1,"noPass":false},{"id":317,"bid":31,"cardId":149,"score":2,"taskType":"health","url":"http://www.baidu.com/baby/20150918/55F0DD486DCB1D98EB4FA92C32E0E9B9.mp4","stageId":1,"replaceScore":0,"topScore":0,"reviewNum":0,"img":"http://www.baidu.com/img/20150918/EFE4CD06AF29E258F748E66A57DADCDA.jpg","stageSort":1,"noPass":false},{"id":316,"bid":31,"cardId":148,"score":2,"taskType":"active","url":"http://www.baidu.com/baby/20150918/F003D1FEBDB6405DE4CDABF04BAAF5C7.mp4","stageId":1,"replaceScore":0,"topScore":0,"reviewNum":0,"img":"http://www.baidu.com/img/20150918/B6D0D43A4A51B29E7AF71A5C8A272529.jpg","stageSort":1,"noPass":false},{"id":313,"bid":2053,"cardId":38,"score":3,"taskType":"active","url":"http://www.baidu.com/img/20150918/1cdb7ad4784209c57a0008cf81ce46a3.jpg","stageId":13,"replaceScore":0,"topScore":0,"reviewNum":2,"img":"","stageSort":7,"noPass":false},{"id":310,"bid":1451,"cardId":148,"score":2,"taskType":"active","url":"http://www.baidu.com/baby/20150918/275436CA950AFE95A49B3A59CDB94598.mp4","stageId":1,"replaceScore":0,"topScore":0,"reviewNum":5,"img":"http://www.baidu.com/img/20150918/6EE5C476BD4F6D5FF8682CCC1E2D1ACD.jpg","stageSort":1,"noPass":false},{"id":301,"bid":2043,"cardId":274,"score":4,"taskType":"active","url":"http://www.baidu.com/baby/20150917/986d3857861b625ea18243fe9247474e.mp4","stageId":22,"replaceScore":0,"topScore":0,"reviewNum":3,"img":"http://www.baidu.com/img/20150917/c22ce3c9047d8b9fee38b7c92751e224.jpg","stageSort":16,"noPass":false},{"id":300,"bid":2043,"cardId":273,"score":5,"taskType":"health","url":"http://www.baidu.com/baby/20150917/e075055ce7f57e11bc936481b35a8e74.mp4","stageId":22,"replaceScore":0,"topScore":0,"reviewNum":3,"img":"http://www.baidu.com/img/20150917/b17aba0636279ed8683ba61c62daa4bd.jpg","stageSort":16,"noPass":false},{"id":299,"bid":1389,"cardId":3,"score":0,"taskType":"health","url":"http://www.baidu.com/img/20150917/37b0fe1f73e8bdec0b0dee2ae696cd05.jpg","stageId":1,"replaceScore":0,"topScore":0,"reviewNum":3,"img":"","stageSort":1,"noPass":false},{"id":290,"bid":29,"cardId":287,"score":0,"taskType":"active","url":"http://www.baidu.com/baby/20150917/8079D13F1A5D9C1F2B68F8393CAD5540.mp4","stageId":24,"replaceScore":0,"topScore":0,"reviewNum":4,"img":"http://www.baidu.com/img/20150917/596BC82D250717E3F415877FC9164421.jpg","stageSort":18,"noPass":false},{"id":289,"bid":29,"cardId":283,"score":0,"taskType":"health","url":"http://www.baidu.com/baby/20150917/B81A0923FCBF27A02CACF88537F86060.mp4","stageId":24,"replaceScore":0,"topScore":0,"reviewNum":3,"img":"http://www.baidu.com/img/20150917/DDFE607FAAB56B0AF61862FDBA8523B5.jpg","stageSort":18,"noPass":false},{"id":288,"bid":29,"cardId":279,"score":0,"taskType":"active","url":"http://www.baidu.com/baby/20150917/479C420B141A62B3E6C4FD11D4F6DCC2.mp4","stageId":24,"replaceScore":0,"topScore":0,"reviewNum":3,"img":"http://www.baidu.com/img/20150917/4CE715152AA42B73593650B7F785F732.jpg","stageSort":18,"noPass":false},{"id":287,"bid":29,"cardId":278,"score":0,"taskType":"active","url":"http://www.baidu.com/baby/20150917/4CCBEC3AF3FF455A616EE5891693DF9E.mp4","stageId":24,"replaceScore":0,"topScore":0,"reviewNum":3,"img":"http://www.baidu.com/img/20150917/EAAD98391D7305F0429584AB881F11EC.jpg","stageSort":18,"noPass":false},{"id":285,"bid":29,"cardId":117,"score":0,"taskType":"active","url":"http://www.baidu.com/img/20150917/2991DC770972638080A9FD8418434430.jpg","stageId":24,"replaceScore":0,"topScore":0,"reviewNum":3,"img":"http://www.baidu.com/img/20150917/2991DC770972638080A9FD8418434430.jpg","stageSort":18,"noPass":false}]}}
看着可能有点迷糊，推荐个网站，在线json格式化网站：

www.bejson.com

在线转换json

下面是转换后的一条记录

{
    "code": "A00000",
    "data": {
        "tasks": [
            {
                "id": 331,
                "bid": 1412,
                "cardId": 3,
                "score": 6,
                "taskType": "health",
                "url": "http://www.baidu.com/img/20150921/5fe010e210710dcec6767f5ce9b4cbfb.jpg",
                "stageId": 1,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 1,
                "img": "",
                "stageSort": 1,
                "noPass": false
            },
            {
                "id": 330,
                "bid": 1412,
                "cardId": 5,
                "score": 6,
                "taskType": "active",
                "url": "http://www.baidu.com/img/20150921/3d56c80bcdddbc71a02f567dc902e138.jpg",
                "stageId": 1,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 1,
                "img": "",
                "stageSort": 1,
                "noPass": true
            },
            {
                "id": 327,
                "bid": 70,
                "cardId": 317,
                "score": 2,
                "taskType": "active",
                "url": "http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg",
                "stageId": 29,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 0,
                "img": "",
                "stageSort": 23,
                "noPass": false
            },
            {
                "id": 326,
                "bid": 70,
                "cardId": 316,
                "score": 2,
                "taskType": "active",
                "url": "http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg",
                "stageId": 29,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 0,
                "img": "",
                "stageSort": 23,
                "noPass": false
            },
            {
                "id": 325,
                "bid": 70,
                "cardId": 315,
                "score": 2,
                "taskType": "active",
                "url": "http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg",
                "stageId": 29,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 0,
                "img": "",
                "stageSort": 23,
                "noPass": false
            },
            {
                "id": 324,
                "bid": 70,
                "cardId": 313,
                "score": 2,
                "taskType": "active",
                "url": "http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg",
                "stageId": 29,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 0,
                "img": "",
                "stageSort": 23,
                "noPass": false
            },
            {
                "id": 323,
                "bid": 70,
                "cardId": 312,
                "score": 2,
                "taskType": "health",
                "url": "http://www.baidu.com/cms_img/20150514/4EED62321250B9F2808B4705EBE79803.jpg",
                "stageId": 29,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 0,
                "img": "",
                "stageSort": 23,
                "noPass": false
            },
            {
                "id": 318,
                "bid": 31,
                "cardId": 151,
                "score": 2,
                "taskType": "health",
                "url": "http://www.baidu.com/baby/20150918/3371567547BE822BF20C2BF24E549AA8.mp4",
                "stageId": 1,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 0,
                "img": "http://www.baidu.com/img/20150918/E46205BC0EAF81B1E76ACD9BB59F1E2D.jpg",
                "stageSort": 1,
                "noPass": false
            },
            {
                "id": 317,
                "bid": 31,
                "cardId": 149,
                "score": 2,
                "taskType": "health",
                "url": "http://www.baidu.com/baby/20150918/55F0DD486DCB1D98EB4FA92C32E0E9B9.mp4",
                "stageId": 1,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 0,
                "img": "http://www.baidu.com/img/20150918/EFE4CD06AF29E258F748E66A57DADCDA.jpg",
                "stageSort": 1,
                "noPass": false
            },
            {
                "id": 316,
                "bid": 31,
                "cardId": 148,
                "score": 2,
                "taskType": "active",
                "url": "http://www.baidu.com/baby/20150918/F003D1FEBDB6405DE4CDABF04BAAF5C7.mp4",
                "stageId": 1,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 0,
                "img": "http://www.baidu.com/img/20150918/B6D0D43A4A51B29E7AF71A5C8A272529.jpg",
                "stageSort": 1,
                "noPass": false
            },
            {
                "id": 313,
                "bid": 2053,
                "cardId": 38,
                "score": 3,
                "taskType": "active",
                "url": "http://www.baidu.com/img/20150918/1cdb7ad4784209c57a0008cf81ce46a3.jpg",
                "stageId": 13,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 2,
                "img": "",
                "stageSort": 7,
                "noPass": false
            },
            {
                "id": 310,
                "bid": 1451,
                "cardId": 148,
                "score": 2,
                "taskType": "active",
                "url": "http://www.baidu.com/baby/20150918/275436CA950AFE95A49B3A59CDB94598.mp4",
                "stageId": 1,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 5,
                "img": "http://www.baidu.com/img/20150918/6EE5C476BD4F6D5FF8682CCC1E2D1ACD.jpg",
                "stageSort": 1,
                "noPass": false
            },
            {
                "id": 301,
                "bid": 2043,
                "cardId": 274,
                "score": 4,
                "taskType": "active",
                "url": "http://www.baidu.com/baby/20150917/986d3857861b625ea18243fe9247474e.mp4",
                "stageId": 22,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 3,
                "img": "http://www.baidu.com/img/20150917/c22ce3c9047d8b9fee38b7c92751e224.jpg",
                "stageSort": 16,
                "noPass": false
            },
            {
                "id": 300,
                "bid": 2043,
                "cardId": 273,
                "score": 5,
                "taskType": "health",
                "url": "http://www.baidu.com/baby/20150917/e075055ce7f57e11bc936481b35a8e74.mp4",
                "stageId": 22,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 3,
                "img": "http://www.baidu.com/img/20150917/b17aba0636279ed8683ba61c62daa4bd.jpg",
                "stageSort": 16,
                "noPass": false
            },
            {
                "id": 299,
                "bid": 1389,
                "cardId": 3,
                "score": 0,
                "taskType": "health",
                "url": "http://www.baidu.com/img/20150917/37b0fe1f73e8bdec0b0dee2ae696cd05.jpg",
                "stageId": 1,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 3,
                "img": "",
                "stageSort": 1,
                "noPass": false
            },
            {
                "id": 290,
                "bid": 29,
                "cardId": 287,
                "score": 0,
                "taskType": "active",
                "url": "http://www.baidu.com/baby/20150917/8079D13F1A5D9C1F2B68F8393CAD5540.mp4",
                "stageId": 24,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 4,
                "img": "http://www.baidu.com/img/20150917/596BC82D250717E3F415877FC9164421.jpg",
                "stageSort": 18,
                "noPass": false
            },
            {
                "id": 289,
                "bid": 29,
                "cardId": 283,
                "score": 0,
                "taskType": "health",
                "url": "http://www.baidu.com/baby/20150917/B81A0923FCBF27A02CACF88537F86060.mp4",
                "stageId": 24,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 3,
                "img": "http://www.baidu.com/img/20150917/DDFE607FAAB56B0AF61862FDBA8523B5.jpg",
                "stageSort": 18,
                "noPass": false
            },
            {
                "id": 288,
                "bid": 29,
                "cardId": 279,
                "score": 0,
                "taskType": "active",
                "url": "http://www.baidu.com/baby/20150917/479C420B141A62B3E6C4FD11D4F6DCC2.mp4",
                "stageId": 24,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 3,
                "img": "http://www.baidu.com/img/20150917/4CE715152AA42B73593650B7F785F732.jpg",
                "stageSort": 18,
                "noPass": false
            },
            {
                "id": 287,
                "bid": 29,
                "cardId": 278,
                "score": 0,
                "taskType": "active",
                "url": "http://www.baidu.com/baby/20150917/4CCBEC3AF3FF455A616EE5891693DF9E.mp4",
                "stageId": 24,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 3,
                "img": "http://www.baidu.com/img/20150917/EAAD98391D7305F0429584AB881F11EC.jpg",
                "stageSort": 18,
                "noPass": false
            },
            {
                "id": 285,
                "bid": 29,
                "cardId": 117,
                "score": 0,
                "taskType": "active",
                "url": "http://www.baidu.com/img/20150917/2991DC770972638080A9FD8418434430.jpg",
                "stageId": 24,
                "replaceScore": 0,
                "topScore": 0,
                "reviewNum": 3,
                "img": "http://www.baidu.com/img/20150917/2991DC770972638080A9FD8418434430.jpg",
                "stageSort": 18,
                "noPass": false
            }
        ]
    }
}


下面开始：

贴代码

<c:forEach items="${taskpass}" var="task" varStatus="status">
						<tr>
							<td>${task.id}</td>
							<td>${task.cardId}</td>
							<td>
								<c:if test="${fn:contains(task.url,'.mp4')}">
									视频
								</c:if>
								<c:if test="${fn:contains(task.url,'.jpg')}">
									图片
								</c:if>
							</td>
							<td>
								<c:if test="${task.noPass==true}">
									审核未通过
								</c:if>
								<c:if test="${task.noPass==false}">
									审核通过
								</c:if>
							</td>
							<td>
								<div class="visible-md visible-lg hidden-sm hidden-xs btn-group">
									<button title="不通过" class="btn btn-xs btn-danger"  data-taskId="${task.id}" 
											id="deleStageBtn" ><i class="icon-ban-circle bigger-120"></i></button>
									<button title="通过" class="btn btn-xs btn-info"  data-taskId="${task.id}"
										btntype="editStage"><i class="icon-check bigger-120"></i></button>
								</div>
							</td>
						</tr>
						</c:forEach>


就是这样。

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jstl标签是一种基于Java的标签库，它提供了一些基本的功能，如条件判断、循环、字符串处理等。在截取字符串时，jstl标签提供了两种方法：一是使用jstl原有的标签库中的方法，二是使用自定义函数。 使用jstl原有的...
Jstl常用字符串处理与数组操作函数概览
Jstl（JavaServer Pages Standard Tag Library）是Java Servlet技术的一部分，它为JSP页面提供了一组预定义的标签库，用于简化服务器端编程，特别是在处理字符串操作、条件判断和数据转换等方面。在Jstl中，有一些...
JSTL(fn)
lansuiyun的专栏
12-21 1506
FUNCTIONS都是标准的EL函数集，大多是处理字符的函数http://java.sun.com/jsp/jstl/functions" prefix="fn"%>1.fn:contains判断一个字符串是否包含了指定的字符串fn:contains(String,subString)  booleansubString 为空，则返回true${fn:contains("zhangshan",
补充JSTL匹配两个后台获取的字符串变量值是否相等
生活在爪洼岛上
12-06 495
&lt;script type="text/javascript"&gt; function selectDefaultOption(selectId,value) { if (value == null || "" == value) { return; } var selectObj = document.getElementById(selectId)...
jsp当中 JSTL标签的c:if的使用，模糊查询判断，JSTL中的字符串处理
qq_31647655的博客
07-07 1591
JSP中JSTL标签c:if 的使用，JSTL中的字符串处理
Jsp,JSTL中常用判断，循环语句等
Cbelieveyouself的博客
06-09 1620
Jsp,JSTL中常用判断，循环语句对比
JSTL
weixin_44764207的博客
12-09 309
1、jtsl函数库 如何使用： a、向web工程lib文件中引入相应的jstl jar文件 b、引入jstl函数库 注：jstl函数只能在${}中使用 <%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%> 1.2 fn:toLowerCase：返回字符串小写格式 1.3 fn:toUpperCase...
jstl逻辑判断的使用
Uself
01-08 1213
本文章记录下jstl中的逻辑判断的基础使用 1.需要jar：jstl-1.2.jar 2.jsp页面引入jsp标签库 3.后台赋值处理 String sex = "根据具体业务逻辑获取得到的性别"; request.setAttribute("SEX", sex);4.前台使用不需要使用else判断时：c：if标签
01-JSTL-概述和常用标签 if、choose、foreach
记录java学习日常~
06-09 1287
c:if：条件判断标签，根据条件执行不同的流程；c:forEach：循环遍历标签，根据集合或数组进行遍历；c:set：变量赋值标签，将数值保存到指定的变量中；c:choose、c:when、c:otherwise：类似于 switch 和 case 语句，当表达式的值等于指定的值时，执行指定的标签体；c:out：格式化输出标签，将数据输出到页面上；c:url：URL 标签，生成基于当前 URL 路径的新 URL。
JSTL标签
holy_xx的博客
04-15 839
一：什么是JSTL; 二：如何使用JSTL; 三：JSTL标准标签库介绍及使用 一：什么是JSTL? JSTL（JavaServerPages Standard Tag Library）JSP标准标签库。 优点：提供一组标准标签 可用于编写各种动态 JSP 页面 二：如何使用JSTL; 1：在JSP页面添加taglib指令 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 2：使用J...
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