Java Runtime.getRuntime（）。exec丢失/更改一些参数

（ -Dexec.mainClass=maven.MainClass成为maven.MainClass 。）

在Java中使用maven执行Java类时（ Eclipse插件 -Dexec.mainClass=maven.MainClass ） -Dexec.mainClass=maven.MainClass变为maven.MainClass

 package maven; public class MainClass { public static void main(String[] args) { System.out.println("app is running!"); } } 

来自Eclipse使用

  Process p = DebugPlugin.exec(cmds, workingPath, envp); RuntimeProcess process = (RuntimeProcess)DebugPlugin.newProcess(launch, p, MavenConstants.PROCESS_MESSAGE); 

那个p= Runtime.getRuntime().exec(cmdLine, envp); 只是调用Java

  p= Runtime.getRuntime().exec(cmdLine, envp); 

连接的字符串数组看起来像下面的字符串，不知何故失去-Dexec.mainClass= part。

 D:\Code\springsource\3.0\apache-maven-3.0.3\bin\mvn.bat compile exec:java -Dexec.mainClass=maven.MainClass 

产量

 [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building org.example.maven 0.0.1-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 0.672s [INFO] Finished at: Fri Jan 24 23:59:50 CST 2014 [INFO] Final Memory: 4M/15M [INFO] ------------------------------------------------------------------------ [ERROR] Unknown lifecycle phase "maven.MainClass". You must specify a valid lifecycle phase or a goal in the format : or :[:]:. Available lifecycle phases are: validate, initialize, generate-sources, process-sources, generate-resources, process-resources, compile, process-classes, generate-test-sources, process-test-sources, generate-test-resources, process-test-resources, test-compile, process-test-classes, test, prepare-package, package, pre-integration-test, integration-test, post-integration-test, verify, install, deploy, pre-site, site, post-site, site-deploy, pre-clean, clean, post-clean. -> [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/LifecyclePhaseNotFoundException 

但是从cmd shell使用mvn或完整文件名就行了

 D:\Progs\Enide-Monster-08-kepler-win32\runtime-EclipseApplication\org.example.maven>mvn compile exec:java -Dexec.mainClass=maven.MainClass [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building org.example.maven 0.0.1-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ org.example.maven --- [WARNING] Using platform encoding (Cp1251 actually) to copy filtered resources, ie build is platform dependent! [INFO] Copying 0 resource [INFO] [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ org.example.maven --- [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] >>> exec-maven-plugin:1.2.1:java (default-cli) @ org.example.maven >>> [INFO] [INFO] <<< exec-maven-plugin:1.2.1:java (default-cli) @ org.example.maven <<D:\Code\springsource\3.0\apache-maven-3.0.3\bin\mvn.bat compile exec:java -Dexec.mainClass=maven .MainClass [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building org.example.maven 0.0.1-SNAPSHOT [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ org.example.maven --- [WARNING] Using platform encoding (Cp1251 actually) to copy filtered resources, ie build is platform dependent! [INFO] Copying 0 resource [INFO] [INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ org.example.maven --- [INFO] Nothing to compile - all classes are up to date [INFO] [INFO] >>> exec-maven-plugin:1.2.1:java (default-cli) @ org.example.maven >>> [INFO] [INFO] <<< exec-maven-plugin:1.2.1:java (default-cli) @ org.example.maven <<< [INFO] [INFO] --- exec-maven-plugin:1.2.1:java (default-cli) @ org.example.maven --- app is running! [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1.435s [INFO] Finished at: Fri Jan 24 23:57:46 CST 2014 [INFO] Final Memory: 5M/15M [INFO] ------------------------------------------------------------------------ 

Answer 1

发现cmdLine.add("-Dmaven.test.skip=true"); 也会因类似的错误而变得true 。

我注意到在JavaDoc中没有提到Runtime.getRuntime().exec(的这种行为Runtime.getRuntime().exec(

通过将所有选项放在一个字符串中解决。

  cmdLine.add(mavenPath); cmdLine.add(mavenOptions+" compile exec:java -Dexec.mainClass="+packageClass);