我刚刚从 svn 下载了一个 grails 项目。
我看到不受支持的major.minor版本是well known problem on S.O.由于运行时和编译时使用的 JDK 版本不匹配导致。
但我使用的是与下面完全相同的版本:
外壳:
JAVA构建路径:
已安装的 JRE:
请问我由于仍然出现以下错误而缺少什么?
Environment set to development
[groovyc] Compiling 190 source files to C:\Users\xxx
java.lang.UnsupportedClassVersionError: com/sun/tools/javac/Main : Unsupported major.minor version 52.0
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:116)
at _GrailsCompile_groovy$_run_closure4_closure10.doCall(_GrailsCompile_groovy:117)
at _GrailsCompile_groovy$_run_closure4_closure10.doCall(_GrailsCompile_groovy)
at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:280)
at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy)
at _GrailsCompile_groovy$_run_closure4.doCall(_GrailsCompile_groovy:104)
at _GrailsCompile_groovy$_run_closure3.doCall(_GrailsCompile_groovy:69)
at _GrailsPackage_groovy$_run_closure2_closure9.doCall(_GrailsPackage_groovy:85)
at _GrailsPackage_groovy$_run_closure2_closure9.doCall(_GrailsPackage_groovy)
at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:280)
at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy)
at _GrailsPackage_groovy$_run_closure2.doCall(_GrailsPackage_groovy:84)
at RunApp$_run_closure1.doCall(RunApp:28)
at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
at gant.Gant.withBuildListeners(Gant.groovy:427)
at gant.Gant.this$2$withBuildListeners(Gant.groovy)
at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
at gant.Gant.dispatch(Gant.groovy:415)
at gant.Gant.this$2$dispatch(Gant.groovy)
at gant.Gant.invokeMethod(Gant.groovy)
at gant.Gant.executeTargets(Gant.groovy:590)
at gant.Gant.executeTargets(Gant.groovy:589)
Caused by: java.lang.UnsupportedClassVersionError: com/sun/tools/javac/Main : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at org.codehaus.groovy.tools.javac.JavacJavaCompiler.findJavac(JavacJavaCompiler.java:160)
at org.codehaus.groovy.tools.javac.JavacJavaCompiler.compile(JavacJavaCompiler.java:49)
at org.codehaus.groovy.tools.javac.JavaAwareCompilationUnit.gotoPhase(JavaAwareCompilationUnit.java:94)
at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:484)
at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:453)
at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:67)
at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:180)
at org.codehaus.groovy.ant.Groovyc.compile(Groovyc.java:905)
at org.codehaus.groovy.ant.Groovyc.execute(Groovyc.java:607)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
... 23 more
--- Nested Exception ---
java.lang.UnsupportedClassVersionError: com/sun/tools/javac/Main : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at org.codehaus.groovy.tools.javac.JavacJavaCompiler.findJavac(JavacJavaCompiler.java:160)
at org.codehaus.groovy.tools.javac.JavacJavaCompiler.compile(JavacJavaCompiler.java:49)
at org.codehaus.groovy.tools.javac.JavaAwareCompilationUnit.gotoPhase(JavaAwareCompilationUnit.java:94)
at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:484)
at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:453)
at org.codehaus.groovy.tools.FileSystemCompiler.compile(FileSystemCompiler.java:67)
at org.codehaus.groovy.tools.FileSystemCompiler.doCompilation(FileSystemCompiler.java:180)
at org.codehaus.groovy.ant.Groovyc.compile(Groovyc.java:905)
at org.codehaus.groovy.ant.Groovyc.execute(Groovyc.java:607)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at _GrailsCompile_groovy$_run_closure4_closure10.doCall(_GrailsCompile_groovy:117)
at _GrailsCompile_groovy$_run_closure4_closure10.doCall(_GrailsCompile_groovy)
at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:280)
at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy)
at _GrailsCompile_groovy$_run_closure4.doCall(_GrailsCompile_groovy:104)
at _GrailsCompile_groovy$_run_closure3.doCall(_GrailsCompile_groovy:69)
at _GrailsPackage_groovy$_run_closure2_closure9.doCall(_GrailsPackage_groovy:85)
at _GrailsPackage_groovy$_run_closure2_closure9.doCall(_GrailsPackage_groovy)
at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:280)
at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy)
at _GrailsPackage_groovy$_run_closure2.doCall(_GrailsPackage_groovy:84)
at RunApp$_run_closure1.doCall(RunApp:28)
at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
at gant.Gant.withBuildListeners(Gant.groovy:427)
at gant.Gant.this$2$withBuildListeners(Gant.groovy)
at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
at gant.Gant.dispatch(Gant.groovy:415)
at gant.Gant.this$2$dispatch(Gant.groovy)
at gant.Gant.invokeMethod(Gant.groovy)
at gant.Gant.executeTargets(Gant.groovy:590)
at gant.Gant.executeTargets(Gant.groovy:589)
Compilation error: java.lang.UnsupportedClassVersionError: com/sun/tools/javac/Main : Unsupported major.minor version 52.0
我通过右键单击项目 -> run-as -> grailsCommand (run-app) 来运行它
最佳答案
该项目是使用较新版本的 JDK 编译的,但在较旧版本上运行。清理所有代码并重建项目。
有时这是由于插件的二进制文件是用更高版本的 Java 编译的。
关于java - 不支持的主要.次要版本 52.0 - grails,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33077432/