显示xml中的数据
我有一个Web应用程序，它从xml读取数据并将其显示在网页的表格中。我使用xslt来定义表并从xml中获取数据并以表格方式显示它们。
我的要求是，假设xml文件中没有可用数据，我想在表格中显示“没有发现数据”这样的消息，如下面的屏幕截图所示：
我在这里附上了我的xml和xslt文件。有人请给我一个任何代码形式的解决方案吗？
XSLT文件
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<head>
<title>VPGate Media Mixer</title>
<meta http-equiv="expires" content="0"/>
<meta http-equiv="pragma" content="no-cache"/>
<meta http-equiv="cache-control" content="no-cache, must-revalidate"/>
<meta http-equiv="refresh" content="15"></meta>
<script src="/Common/common.js\" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="style001.css" />
<link rel="stylesheet" type="text/css" href="Grid.Default.css" />
</head>
<body class="WorkArea">
<div class="divSummaryHeader" id="SummaryHeader">
<h1>Media Mixer - VPGate</h1>
<xsl:for-each select="MMDiagnostics/Conference">
<h1>
Media Mixer - <xsl:value-of select="name"/>
</h1>
</xsl:for-each>
</div>
 
<div class="RadGrid RadGrid_Default" id="SummaryData" style="position:absolute;width:790px;overflow:auto">
<table border="0" class="rgMasterTable rgClipCells" cellspacing="0" cellpadding="0" >
<tr>
<input type="button" class="formEditBtn" id="SubBtn" value="Refresh" onclick="window.location=window.location;"/>
</tr>
<tr>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;" colspan="2">Conference Summary</td>
</tr>
<tr>
<td>
<table border="0" class="rgMasterTable rgClipCells" cellspacing="0" cellpadding="0" >
<tr>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Conference Name</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Conference ID</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Composite Address</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Composite Port</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Composite Ssrc</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">No Of Participants</td>
</tr>
<xsl:for-each select="MediaMixer/Conference">
<!--<xsl:sort select="Name"/>-->
<xsl:if test="(position() mod 2 = 0)">
<tr class="rgAltRow SummaryTableDataRow">
<td valign = "top">
<xsl:value-of select="Name"/>
</td>
<td valign = "top">
<xsl:value-of select="ConfId"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositeAddress"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositePort"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositeSsrc"/>
</td>
<td valign = "top">
<xsl:value-of select="NoOfParticipants"/>
</td>
</tr>
</xsl:if>
<xsl:if test="(position() mod 2 = 1)">
<td>
<tr class="rgRow SummaryTableDataRow">
<td valign = "top">
<xsl:value-of select="Name"/>
</td>
<td valign = "top">
<xsl:value-of select="ConfId"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositeAddress"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositePort"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositeSsrc"/>
</td>
<td valign = "top">
<xsl:value-of select="NoOfParticipants"/>
</td>
</tr>
</td>
</xsl:if>
</xsl:for-each>
</table>
</td>
</tr>
</table>
 
<table border="0" class="rgMasterTable rgClipCells" cellspacing="1" cellpadding="1" >
<tr>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;" colspan="2">Conference Details</td>
</tr>
<tr>
<td>
<table border="0" class="rgMasterTable rgClipCells" cellspacing="0" cellpadding="0" >
<tr>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Conference Name</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Conference ID</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">ID 1</td>
<td class="rgHeader SummaryTableHdrRow" style="white-space: nowrap;font-weight:bold;" >ID 2</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Participant Address</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Participant Listening Port</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">MM Listening Port</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">SSRC From Participant</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">SSRC From MM</td>
</tr>
<xsl:for-each select="MediaMixer/Conference/Participant">
<xsl:if test="(position() mod 2 = 0)">
<tr class="rgAltRow SummaryTableDataRow">
<td valign = "top">
<xsl:value-of select="ID1"/>
</td>
<td valign = "top">
<xsl:value-of select="ID2"/>
</td>
<td valign = "top">
<xsl:value-of select="ParticipantAddress"/>
</td>
<td valign = "top">
<xsl:value-of select="ParticipantListeningPort"/>
</td>
<td valign = "top">
<xsl:value-of select="MMListeningPort"/>
</td>
<td valign = "top">
<xsl:value-of select="SSRCFromParticipant"/>
</td>
<td valign = "top">
<xsl:value-of select="SSRCFromMM"/>
</td>
</tr>
</xsl:if>
<xsl:if test="(position() mod 2 = 1)">
<td>
<tr class="rgRow SummaryTableDataRow">
<td valign = "top">
<xsl:value-of select="ID1"/>
</td>
<td valign = "top">
<xsl:value-of select="ID2"/>
</td>
<td valign = "top">
<xsl:value-of select="ParticipantAddress"/>
</td>
<td valign = "top">
<xsl:value-of select="ParticipantListeningPort"/>
</td>
<td valign = "top">
<xsl:value-of select="MMListeningPort"/>
</td>
<td valign = "top">
<xsl:value-of select="SSRCFromParticipant"/>
</td>
<td valign = "top">
<xsl:value-of select="SSRCFromMM"/>
</td>
</tr>
</td>
</xsl:if>
</xsl:for-each>
</table>
</td>
</tr>
</table>
 
<div style="display:none">
<iframe id="frameUpdate" name="frameUpdate" width="100%"></iframe>
</div>
</div>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
XML文件
<?xml-stylesheet type="text/xsl" href="MMDiagnostics.xslt"?>
<MediaMixer>
<Conference>
<Name>Test</Name>
<ConfId>1002</ConfId>
<CompositeAddress>238.57.0.1</CompositeAddress>
<CompositePort>48000</CompositePort>
<CompositeSsrc>243324353</CompositeSsrc>
<NoOfParticipants>2</NoOfParticipants>
<Participant>
<ID1>80542151</ID1>
<ID2>4</ID2>
<ParticipantAddress>192.168.177.40</ParticipantAddress>
<ParticipantListeningPort>22000</ParticipantListeningPort>
<MMListeningPort>45000</MMListeningPort>
<SSRCFromParticipant>216541</SSRCFromParticipant>
<SSRCFromMM>56481</SSRCFromMM>
</Participant>
<Participant>
<ID1>80542151</ID1>
<ID2>7</ID2>
<ParticipantAddress>192.168.177.40</ParticipantAddress>
<ParticipantListeningPort>22000</ParticipantListeningPort>
<MMListeningPort>45000</MMListeningPort>
<SSRCFromParticipant>216541</SSRCFromParticipant>
<SSRCFromMM>56481</SSRCFromMM>
</Participant>
<Participant>
<ID1>7825482</ID1>
<ID2>0</ID2>
<ParticipantAddress>192.168.177.22</ParticipantAddress>
<ParticipantListeningPort>22002</ParticipantListeningPort>
<MMListeningPort>45002</MMListeningPort>
<SSRCFromParticipant>3256</SSRCFromParticipant>
<SSRCFromMM>14822456</SSRCFromMM>
</Participant>
</Conference>
<Conference>
<Name>Test002</Name>
<ConfId>1002</ConfId>
<CompositeAddress>238.57.0.1</CompositeAddress>
<CompositePort>48005</CompositePort>
<CompositeSsrc>353324353</CompositeSsrc>
<NoOfParticipants>2</NoOfParticipants>
<Participant>
<ID1>70542151</ID1>
<ID2>0</ID2>
<ParticipantAddress>192.168.177.45</ParticipantAddress>
<ParticipantListeningPort>22004</ParticipantListeningPort>
<MMListeningPort>45004</MMListeningPort>
<SSRCFromParticipant>316541</SSRCFromParticipant>
<SSRCFromMM>26481</SSRCFromMM>
</Participant>
<Participant>
<ID1>70542151</ID1>
<ID2>0</ID2>
<ParticipantAddress>192.168.177.45</ParticipantAddress>
<ParticipantListeningPort>22004</ParticipantListeningPort>
<MMListeningPort>45004</MMListeningPort>
<SSRCFromParticipant>316541</SSRCFromParticipant>
<SSRCFromMM>26481</SSRCFromMM>
</Participant>
<Participant>
<ID1>70542151</ID1>
<ID2>0</ID2>
<ParticipantAddress>192.168.177.45</ParticipantAddress>
<ParticipantListeningPort>22004</ParticipantListeningPort>
<MMListeningPort>45004</MMListeningPort>
<SSRCFromParticipant>316541</SSRCFromParticipant>
<SSRCFromMM>26481</SSRCFromMM>
</Participant>
<Participant>
<ID1>70542151</ID1>
<ID2>0</ID2>
<ParticipantAddress>192.168.177.45</ParticipantAddress>
<ParticipantListeningPort>22004</ParticipantListeningPort>
<MMListeningPort>45004</MMListeningPort>
<SSRCFromParticipant>316541</SSRCFromParticipant>
<SSRCFromMM>26481</SSRCFromMM>
</Participant>
<Participant>
<ID1>70542151</ID1>
<ID2>0</ID2>
<ParticipantAddress>192.168.177.45</ParticipantAddress>
<ParticipantListeningPort>22004</ParticipantListeningPort>
<MMListeningPort>45004</MMListeningPort>
<SSRCFromParticipant>316541</SSRCFromParticipant>
<SSRCFromMM>26481</SSRCFromMM>
</Participant>
<Participant>
<ID1>5625482</ID1>
<ID2>0</ID2>
<ParticipantAddress>192.168.177.20</ParticipantAddress>
<ParticipantListeningPort>22006</ParticipantListeningPort>
<MMListeningPort>45006</MMListeningPort>
<SSRCFromParticipant>8256</SSRCFromParticipant>
<SSRCFromMM>41822456</SSRCFromMM>
</Participant>
</Conference>
</MediaMixer>
1 个答案:
答案 0 :(得分：0)
<?xml version="1.0" encoding="iso-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<head>
<title>VPGate Media Mixer</title>
<meta http-equiv="expires" content="0"/>
<meta http-equiv="pragma" content="no-cache"/>
<meta http-equiv="cache-control" content="no-cache, must-revalidate"/>
<meta http-equiv="refresh" content="15"></meta>
<script src="/Common/common.js\" type="text/javascript"></script>
<link rel="stylesheet" type="text/css" href="style001.css" />
<link rel="stylesheet" type="text/css" href="Grid.Default.css" />
</head>
<body class="WorkArea">
<div class="divSummaryHeader" id="SummaryHeader">
<h1>Media Mixer - VPGate</h1>
<xsl:for-each select="MMDiagnostics/Conference">
<h1>
Media Mixer - <xsl:value-of select="name"/>
</h1>
</xsl:for-each>
</div>
 
<div class="RadGrid RadGrid_Default" id="SummaryData" style="position:absolute;width:790px;overflow:auto">
<table border="0" class="rgMasterTable rgClipCells" cellspacing="0" cellpadding="0" >
<tr>
<input type="button" class="formEditBtn" id="SubBtn" value="Refresh" onclick="window.location=window.location;"/>
</tr>
<tr>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;" colspan="2">Conference Summary</td>
</tr>
<tr>
<td>
<table border="0" class="rgMasterTable rgClipCells" cellspacing="0" cellpadding="0" >
<tr>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Conference Name</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Conference ID</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Composite Address</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Composite Port</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Composite Ssrc</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">No Of Participants</td>
</tr>
<xsl:choose>
<xsl:when test="count(//Participant)>0">
<xsl:for-each select="MediaMixer/Conference">
<!--<xsl:sort select="Name"/>-->
<xsl:if test="(position() mod 2 = 0)">
<tr class="rgAltRow SummaryTableDataRow">
<td valign = "top">
<xsl:value-of select="Name"/>
</td>
<td valign = "top">
<xsl:value-of select="ConfId"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositeAddress"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositePort"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositeSsrc"/>
</td>
<td valign = "top">
<xsl:value-of select="NoOfParticipants"/>
</td>
</tr>
</xsl:if>
<xsl:if test="(position() mod 2 = 1)">
<td>
<tr class="rgRow SummaryTableDataRow">
<td valign = "top">
<xsl:value-of select="Name"/>
</td>
<td valign = "top">
<xsl:value-of select="ConfId"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositeAddress"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositePort"/>
</td>
<td valign = "top">
<xsl:value-of select="CompositeSsrc"/>
</td>
<td valign = "top">
<xsl:value-of select="NoOfParticipants"/>
</td>
</tr>
</td>
</xsl:if>
</xsl:for-each>
</xsl:when>
<xsl:otherwise>
<tr>
<td> No data has been discovered..</td>
</tr>
</xsl:otherwise>
</xsl:choose>
</table>
</td>
</tr>
</table>
 
<table border="0" class="rgMasterTable rgClipCells" cellspacing="1" cellpadding="1" >
<tr>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;" colspan="2">Conference Details</td>
</tr>
<tr>
<td>
<table border="0" class="rgMasterTable rgClipCells" cellspacing="0" cellpadding="0" >
<tr>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Conference Name</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Conference ID</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">ID 1</td>
<td class="rgHeader SummaryTableHdrRow" style="white-space: nowrap;font-weight:bold;" >ID 2</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Participant Address</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">Participant Listening Port</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">MM Listening Port</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">SSRC From Participant</td>
<td class="rgHeader SummaryTableHdrRow" style="font-weight:bold;">SSRC From MM</td>
</tr>
<xsl:for-each select="MediaMixer/Conference/Participant">
<xsl:if test="(position() mod 2 = 0)">
<tr class="rgAltRow SummaryTableDataRow">
<td valign = "top">
<xsl:value-of select="ID1"/>
</td>
<td valign = "top">
<xsl:value-of select="ID2"/>
</td>
<td valign = "top">
<xsl:value-of select="ParticipantAddress"/>
</td>
<td valign = "top">
<xsl:value-of select="ParticipantListeningPort"/>
</td>
<td valign = "top">
<xsl:value-of select="MMListeningPort"/>
</td>
<td valign = "top">
<xsl:value-of select="SSRCFromParticipant"/>
</td>
<td valign = "top">
<xsl:value-of select="SSRCFromMM"/>
</td>
</tr>
</xsl:if>
<xsl:if test="(position() mod 2 = 1)">
<td>
<tr class="rgRow SummaryTableDataRow">
<td valign = "top">
<xsl:value-of select="ID1"/>
</td>
<td valign = "top">
<xsl:value-of select="ID2"/>
</td>
<td valign = "top">
<xsl:value-of select="ParticipantAddress"/>
</td>
<td valign = "top">
<xsl:value-of select="ParticipantListeningPort"/>
</td>
<td valign = "top">
<xsl:value-of select="MMListeningPort"/>
</td>
<td valign = "top">
<xsl:value-of select="SSRCFromParticipant"/>
</td>
<td valign = "top">
<xsl:value-of select="SSRCFromMM"/>
</td>
</tr>
</td>
</xsl:if>
</xsl:for-each>
</table>
</td>
</tr>
</table>
 
<div style="display:none">
<iframe id="frameUpdate" name="frameUpdate" width="100%"></iframe>
</div>
</div>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
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