不支持的major.minor版本52.0 – grails

我刚从svn下载了一个grails项目。

我看到不受支持的major.minor版本是由于在运行时和编译时使用的JDK不匹配版本导致的SO上的一个众所周知的问题 。

但我使用的是与以下相同的版本：

贝壳：

JAVA构建路径：

安装JRE：

请问我因缺少以下错误而遗失了什么？

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 

我通过右击项目运行它 – > run-as – > grailsCommand（run-app）

Answer 1

该项目是使用较新版本的JDK编译的，但是在较旧版本下运行。 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。