Jnlp 无法解析启动文件.第 0 行错误 [英] Jnlp Could not parse launch file. Error at line 0

问题描述

我在网上搜索并没有找到明确的解决方案，所以这里是:

I have searched the web and have found no definitive solution, so here goes:

我制作了一个 JNLP 文件以在同一文件夹中启动 JAR，但是它无法启动并给出错误无法解析启动文件.第 0 行错误."

I made a JNLP file to launch a JAR in the same folder, however it fails to launch and gives the error "Could not parse launch file. Error at line 0."

这里是 DevChat.jnlp:

Here's DevChat.jnlp:

<?xml version="1.0" encoding="utf-8"?> 
<!-- JNLP to Launch DevChat -->
<jnlp 
    spec="1.0+"
    href="DevChat.jnlp">

    <information>
        <title>DevChat</title>
        <vendor>Dev Team</vendor>
    </information>

    <security>
        <all-permissions/>
    </security>

    <resources>
    <j2se version="1.4.2"/>
        <jar href="DevSuite.jar" main="true" />
    <jar href="commons-net-3.0.1.jar" />
    </resources>

    <application-desc 
    main-class="DevChat"
        name="DevChat"
     </application-desc>

</jnlp>  

还有例外:

JNLParseException[ Could not parse launch file. Error at line 0.]
at com.sun.javaws.jnl.XMLFormat.parse(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

和包装的异常:

java.lang.NullPointerException
at com.sun.deploy.xml.XMLParser.parseXMLAttribute(Unknown Source)
at com.sun.deploy.xml.XMLParser.parseXMLElement(Unknown Source)
at com.sun.deploy.xml.XMLParser.parseXMLElement(Unknown Source)
at com.sun.deploy.xml.XMLParser.parseXMLElement(Unknown Source)
at com.sun.deploy.xml.XMLParser.parseXMLElement(Unknown Source)
at com.sun.deploy.xml.XMLParser.parseXMLElement(Unknown Source)
at com.sun.deploy.xml.XMLParser.parse(Unknown Source)
at com.sun.javaws.jnl.XMLFormat.parse(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

从控制台运行什么都不显示.任何帮助将不胜感激！

Running from console shows nothing at all. Any help would be appreciated!

推荐答案

我猜这个 XML 格式不正确:

I guess that this XML is malformed:

<application-desc 
    main-class="DevChat"
    name="DevChat"
</application-desc>

你需要像这样关闭打开的标签:

you need to close the open tag like this:

<application-desc 
    main-class="DevChat"
    name="DevChat">
</application-desc>

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