下载科学工作流开普勒：构建中的错误蚂蚁。xml

Downloading scientific workflow kepler: Error ant in build .xml

当我尝试使用 cmd 下载我的开普勒引擎时，我遇到了 build.xml 中的蚂蚁问题。我安装了java、ant和svn版本，没有任何问题。

C:\Users\lenovo\kepler\build-area>ant change-to -Dsuite=kepler Buildfile: C:\Users\lenovo\kepler\build-area\build.xml

BUILD FAILED C:\Users\lenovo\kepler\build-area\build.xml:4: The following error occurred while executing this line: C:\Users\lenovo\kepler\build-area\settings\taskdefs.xml:5: java.lang.UnsupportedClassVersionError: org/kepler/build/Maven : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at org.apache.tools.ant.AntClassLoader.defineClassFromData(AntClassLoader.java:1150) at org.apache.tools.ant.AntClassLoader.getClassFromStream(AntClassLoader.java:1318) at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1374) at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1335) at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1090) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:278) at org.apache.tools.ant.taskdefs.Definer.addDefinition(Definer.java:580) at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:238) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:437) at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:169) at org.apache.tools.ant.taskdefs.ImportTask.importResource(ImportTask.java:225) at org.apache.tools.ant.taskdefs.ImportTask.execute(ImportTask.java:166) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:437) at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:180) at org.apache.tools.ant.ProjectHelper.configureProject(ProjectHelper.java:93) at org.apache.tools.ant.Main.runBuild(Main.java:832) at org.apache.tools.ant.Main.startAnt(Main.java:236) at org.apache.tools.ant.launch.Launcher.run(Launcher.java:286) at org.apache.tools.ant.launch.Launcher.main(Launcher.java:112)

Total time: 0 seconds

Kepler FAQ "system requirements" 明确指出：

Kepler is a large application that has substantial hardware requirements.
These include 512MB of RAM (1 GB or more recommended), at least 300 MB of disk space, and at least a 2GHz CPU. Kepler runs on modern Windows, Macintosh (OS X), and Linux systems using Java 1.8 or greater.

如explained here，你的错误信息说明你没有使用正确的JDK。 （JDK8 个或更多）

查看 Instructions and Overview of the Kepler Build System. / Assumptions

  1. You are running Java 1.8. To test this assumption type: "java -version"
  2. You are using Ant 1.8.2. To test this assumption type: "ant -version"
  3. You have installed Maven 3.0.3 or newer. To test this assumption: "mvn --version"
  4. You have installed an SVN client, v1.6. To test this assumption type: "svn --version"
  5. For development with Eclipse these have been tested with Eclipse Ganymede and SVN 1.5.5, with Subclipse 1.4.7.