📄 logic-empty.jsp
字号:
<%--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
--%>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<html>
<head>
<title>Test struts-logic Emptiness Tags</title>
</head>
<body bgcolor="white">
<div align="center">
<h1>Test struts-logic Emptiness Tags</h1>
</div>
<jsp:useBean id="bean" scope="page" class="org.apache.struts.webapp.exercise.TestBean" />
<table border="1">
<tr>
<th>Test Type</th>
<th>Correct Value</th>
<th>Test Result</th>
</tr>
<tr>
<td>missing bean, no property attribute</td>
<td>empty</td>
<td>
<logic:empty name="missingBean">empty</logic:empty>
<logic:notEmpty name="missingBean">notEmpty</logic:notEmpty>
</td>
</tr>
<tr>
<td>not-missing bean, no property attribute</td>
<td>notEmpty</td>
<td>
<logic:empty name="bean">empty</logic:empty>
<logic:notEmpty name="bean">notEmpty</logic:notEmpty>
</td>
</tr>
<tr>
<td>null</td>
<td>empty</td>
<td>
<logic:empty name="bean" property="nullProperty">empty</logic:empty>
<logic:notEmpty name="bean" property="nullProperty">notEmpty</logic:notEmpty>
</td>
</tr>
<tr>
<td>empty string</td>
<td>empty</td>
<td>
<logic:empty name="bean" property="emptyStringProperty">empty</logic:empty>
<logic:notEmpty name="bean" property="emptyStringProperty">notEmpty</logic:notEmpty>
</td>
</tr>
<tr>
<td>non-empty string</td>
<td>notEmpty</td>
<td>
<logic:empty name="bean" property="stringProperty">empty</logic:empty>
<logic:notEmpty name="bean" property="stringProperty">notEmpty</logic:notEmpty>
</td>
</tr>
<tr>
<td>empty collection</td>
<td>empty</td>
<td>
<logic:empty name="bean" property="emptyListProperty">empty</logic:empty>
<logic:notEmpty name="bean" property="emptyListProperty">notEmpty</logic:notEmpty>
</td>
</tr>
<tr>
<td>non-empty collection</td>
<td>notEmpty</td>
<td>
<logic:empty name="bean" property="listProperty">empty</logic:empty>
<logic:notEmpty name="bean" property="listProperty">notEmpty</logic:notEmpty>
</td>
</tr>
<tr>
<td>empty map</td>
<td>empty</td>
<td>
<logic:empty name="bean" property="emptyMapProperty">empty</logic:empty>
<logic:notEmpty name="bean" property="emptyMapProperty">notEmpty</logic:notEmpty>
</td>
</tr>
<tr>
<td>non-empty map</td>
<td>notEmpty</td>
<td>
<logic:empty name="bean" property="mapProperty">empty</logic:empty>
<logic:notEmpty name="bean" property="mapProperty">notEmpty</logic:notEmpty>
</td>
</tr>
<tr>
<td>unsupported object</td>
<td>notEmpty</td>
<td>
<logic:empty name="bean" property="intProperty">empty</logic:empty>
<logic:notEmpty name="bean" property="intProperty">notEmpty</logic:notEmpty>
</td>
</tr>
</table>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -