这是我第一次使用Java Web Start。这是我的应用程序的演示版本。我已将JAR上传到我的服务器,并创建了一个JNLP文件。当我在本地运行文件时,我得到如下所示的异常。
This是我正在阅读的参考,下面是我的JNLP文件。
DerbyPro.jnlp
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="" href="">
<information>
<title>Derby Pro</title>
<vendor>Neon Orb</vendor>
<icon href="http://neonorb.com/images/derby-pro/derby-pro-icon-hd.png"/>
<offline-allowed/>
</information>
<resources>
<j2se version="1.8+" href=
"http://neonorb.com"/>
<jar href="http://neonorb.com/clientportal/derby-pro-demo.jar"
main="true" />
</resources>
<application-desc
name="Derby Pro"
main-class="com.neonorb.derbypro.main.DerbyPro"
width="300"
height="300">
</application-desc>
<update check="background"/>
</jnlp>
这是我的build.gradle
文件,如下所示:./gradlew -Pversion=0.0.0 -Pdemo=true fatJar
group 'com.neonorb'
apply plugin: 'java'
sourceCompatibility = 1.8
project.description = 'Derby Pro is pinewood derby management software.'
//create a single Jar with all dependencies
task fatJar(type: Jar) {
manifest {
attributes 'Implementation-Version': version,
'Main-Class': 'com.neonorb.derbypro.main.DerbyPro',
'Demo': demo
}
baseName = project.name
from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
with jar
}
repositories {
mavenCentral()
maven {
url "http://www.sparetimelabs.com/maven2"
}
mavenLocal()
}
dependencies {
compile files('dfalex-0.9.2.jar')
compile 'com.neonorb:commons:+'
compile group: 'com.fasterxml.jackson.core', name: 'jackson-databind', version: '2.5.4'
compile group: 'commons-cli', name: 'commons-cli', version: '1.3.1'
compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.4'
compile group: 'org.controlsfx', name: 'controlsfx', version: '8.40.10'
compile group: 'org.fxmisc.easybind', name: 'easybind', version: '1.0.3'
compile group: 'org.scream3r', name: 'jssc', version: '2.8.0'
compile group: 'com.sparetimelabs', name: 'purejavacomm', version: '0.0.28'
compile 'net.java.dev.jna:jna:4.2.1'
compile 'commons-io:commons-io:2.4'
testCompile group: 'junit', name: 'junit', version: '4.11'
testCompile 'net.jodah:concurrentunit:0.4.2'
}
//Native launchers
//Windows
buildscript {
repositories {
maven {
url 'https://plugins.gradle.org/m2/'
}
}
dependencies {
classpath 'gradle.plugin.edu.sc.seis.gradle:launch4j:1.6.1'
}
}
apply plugin: 'edu.sc.seis.launch4j'
launch4j {
//outputDir = 'native/windows'
bundledJrePath = 'jre'
dontWrapJar = true
jar = 'bin/derby-pro.jar'
mainClassName = 'com.neonorb.derbypro.main.DerbyPro'
icon = '../../src/main/resources/com/neonorb/derbypro/assets/derby-pro-icon-favicon.ico'
outfile = 'DerbyPro.exe'
companyName = 'Neon Orb'
productName = 'Derby Pro'
}
//OS X
/*plugins {
id "edu.sc.seis.macAppBundle" version "2.1.0"
}
macAppBundle {
mainClassName = "com.example.myApp.Start"
icon = "myIcon.icns"
bundleJRE = true
javaProperties.put("apple.laf.useScreenMenuBar", "true")
backgroundImage = "doc/macbackground.png"
}*/
这是清单目录。
这是明确的内容。
Manifest-Version: 1.0
Implementation-Version: 0.0.0
Main-Class: com.neonorb.derbypro.main.DerbyPro
Demo: true
答案 0 :(得分:1)
您的jar文件包含重复的条目,这些条目在部署时可能会导致问题。如果对jar文件运行以下命令,则会看到重复的条目:
$ unzip -l derby-pro-demo.jar |grep META
0 01-26-16 11:47 META-INF/
116 01-26-16 11:47 META-INF/MANIFEST.MF
321 06-09-15 18:42 META-INF/LICENSE
825 06-09-15 18:42 META-INF/NOTICE
...
11358 06-14-15 12:06 META-INF/LICENSE.txt
172 06-14-15 12:06 META-INF/NOTICE.txt
...
11358 04-03-15 14:30 META-INF/LICENSE.txt
301 04-03-15 14:30 META-INF/NOTICE.txt
创建胖罐时,应解决重复的条目。我对gradle没有经验。问题(第一个链接)仍然标记为“打开”,所以我假设可能没有一个简单的修复。作为一种解决方法(如果这可能并且适合您),我可以想象将所有jar内容首先复制到临时目录。这将覆盖重复的条目。然后你可以从临时目录中构建fat jar。但是,我会非常小心。首先,一些重复的类文件可能是相关的,其次是LICENSE,NOTICE等文件肯定会导致许可证问题。
答案 1 :(得分:0)
JNLP文件包含一个主类属性,Java Web Start正在尝试使用该主类创建清单。因此,从JNLP文件中删除主类属性允许它运行。