【发布时间】:2015-12-21 06:19:45
【问题描述】:
我使用IntelliJ IDEA 的GUI 设计器和Maven 作为构建系统。当我通过this 答案构建可执行文件JAR 时,构建成功。但是,通过命令java -jar MyApplication.jar 启动时会抛出异常:
Exception in thread "main" java.awt.IllegalComponentStateException: contentPane cannot be set to null.
at javax.swing.JRootPane.setContentPane(JRootPane.java:621)
at javax.swing.JFrame.setContentPane(JFrame.java:698)
...
受影响的代码行如下:
setContentPane(panel);
从IntelliJ 中的源代码运行时,它可以正常工作,但是Maven 似乎无法正确构建JAR 文件。毕竟,IntelliJ 通过链接到 .form 文件来保持 .java 源代码文件不受 GUI 代码影响,从而发挥了“魔力”。
我还找到了一个可能的解决方案,它涉及向pom.xml 文件添加一个特殊插件,该插件似乎可以为IntelliJ 的GUI 设计器here 启用构建支持。所以我再次运行mvn clean compile assembly:single,它没有任何错误但是没有任何改变。
如果我执行mvn deploy,插件会抛出以下错误:
[ERROR] Failed to execute goal org.codehaus.mojo:ideauidesigner-maven-plugin:1.0-beta-1:javac2 (default) on project MyApplication: Execution default of goal org.codehaus.mojo:ideauidesigner-maven-plugin:1.0-beta-1:javac2 failed: 16257 -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
这是我的 pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>groupId</groupId>
<artifactId>MyApplication</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<!-- Apache Commons Lang -->
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<!-- Jsoup HTML parser -->
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.8.3</version>
</dependency>
<!-- Apache Commons IO -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
<!-- Apache Commons Validator -->
<dependency>
<groupId>commons-validator</groupId>
<artifactId>commons-validator</artifactId>
<version>1.4.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>com.example.MyApplication
</mainClass>
</manifest>
<manifestEntries>
<Built-By>BullyWiiPlaza</Built-By>
</manifestEntries>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<!-- IDEA Gui Designer Plugin -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>ideauidesigner-maven-plugin</artifactId>
<version>1.0-beta-1</version>
<executions>
<execution>
<goals>
<goal>javac2</goal>
</goals>
</execution>
</executions>
<configuration>
<fork>true</fork>
<debug>true</debug>
<failOnError>true</failOnError>
</configuration>
</plugin>
</plugins>
</build>
</project>
怎么了?如何使用Maven 结合IntelliJ 的GUI 设计器正确导出可执行的JAR 文件?
【问题讨论】:
-
我遇到了同样的问题。你解决了吗?
-
@André: 不确定,但最近我不再有这个问题,一切顺利
-
似乎问题出在 lambda 表达式上。如果我删除应用程序中的所有 lambda 表达式,它会部署....
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@André:我也不使用 lambda 表达式...
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根据@André 的评论,请参阅:stackoverflow.com/questions/32135018/…
标签: java maven intellij-idea jar