Question

我先问到这里......但没有结束。请先看看这篇文章。

exec-maven-plugin error, even on working example

===现状===

我为eclipse java构建路径和项目构建路径强制修改了JDK路径。
我现在可以编译了。（使用＆＃39; mvn -e compile exec:java＆＃39;）
但我不能跑。（使用＆＃39; mvn -e clean exec:java＆＃39;）Maven找不到我的mainClass
我尝试用＆＃39; mvn -e clean exec:java -Dexec.mainClass=com.jadex.qna.MavenTestProject.App＆＃39;明确宣布我的主要课程。但它给我同样的错误结果。

===数据===

这是我的完整代码（包括pom.xml，您可以使用eclipse打开项目）

https://github.com/arincblossom/MavenTestProject

当我使用＆＃39; mvn -e clean exec:java＆＃39;运行项目时显示错误日志。（与上一篇文章中的EDIT5相同）

[WARNING] 
[WARNING] Some problems were encountered while building the effective settings
[WARNING] expected START_TAG or END_TAG not TEXT (position: TEXT seen ...ore artifacts.\n   |\n   | Default: ${user.home}/.m2/repository\n  <l... @53:5)  @ C:\apache-maven-3.3.3\conf\settings.xml, line 53, column 5
[WARNING] expected START_TAG or END_TAG not TEXT (position: TEXT seen ...ore artifacts.\n   |\n   | Default: ${user.home}/.m2/repository\n  <l... @53:5)  @ C:\apache-maven-3.3.3\conf\settings.xml, line 53, column 5
[WARNING] 
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building MavenTestProject 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ MavenTestProject ---
[INFO] Deleting C:\Users\bonavision_laptop\Desktop\Project\JadeX\MavenTestProject\MavenTestProject\target
[INFO] 
[INFO] --- exec-maven-plugin:1.4.0:java (default-cli) @ MavenTestProject ---
[WARNING] 
java.lang.ClassNotFoundException: com.jadex.qna.MavenTestProject.App
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:281)
    at java.lang.Thread.run(Thread.java:745)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.900 s
[INFO] Finished at: 2015-06-15T17:42:19+09:00
[INFO] Final Memory: 8M/153M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.4.0:java (default-cli) on project MavenTestProject: An exception occured while executing the Java class. com.jadex.qna.MavenTestProject.App -> [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/MojoExecutionException

有什么办法可以解决吗？我现在已经坚持了4天......请帮助T_T

Answer 1

如果您运行clean exec:java删除了所有已编译的类，那么mvn clean compile exec:java无法找到要执行的类。

如果您运行clean。 compile删除所有已编译的类，这些类可能来自之前的biuld。 exec:java编译所有源代码，[INFO] Error stacktraces are turned on. [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building MavenTestProject 0.0.1-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ MavenTestProject --- [INFO] Deleting /tmp/MavenTestProject/target [INFO] [INFO] --- maven-resources-plugin:2.5:resources (default-resources) @ MavenTestProject --- [debug] execute contextualize [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory /tmp/MavenTestProject/src/main/resources [INFO] [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ MavenTestProject --- [INFO] Compiling 1 source file to /tmp/MavenTestProject/target/classes [INFO] [INFO] --- exec-maven-plugin:1.4.0:java (default-cli) @ MavenTestProject --- Hello World!? [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 0.934s [INFO] Finished at: Mon Jun 15 12:08:36 CEST 2015 [INFO] Final Memory: 8M/19M [INFO] ------------------------------------------------------------------------执行指定的类。

如果输出不是您所期望的，也许您应该更好地描述您想要实现的目标。

<强>输出

getInstance()

exec-maven-plugin错误...可以编译，但不能运行项目

1 个答案: