今天@Test时项目出现了Error,如下
java.lang.UnsupportedClassVersionError: org/apache/ibatis/session/SqlSessionFactoryBuilder : 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$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at test.mybatisTest.test(mybatisTest.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
搜到了其他人的解释说Unsupported major.minor version 52.0是,jvm虚拟机的jdk与电脑的jdk版本不一致造成的。
JDK版本 | 序号 |
Java SE 10 | 54 (0x36 hex) |
Java SE 9 | 53 (0x35 hex) |
Java SE 8 | 52 (0x34 hex) |
Java SE 7 | 51 (0x33 hex) |
Java SE 6.0 | 50 (0x32 hex) |
Java SE 5.0 | 49(0x31 hex) |
JDK 1.4 | 48 (0x30 hex) |
JDK 1.3 | 47 (0x2F hex) |
JDK 1.2 | 46 (0x2E hex) |
JDK 1.1 | 45 (0x2D hex) |
验证:
电脑jdk:版本1.8
项目:版本1.7
解决方案:
要么修改电脑jdk,要么修改项目所依赖的jdk。
我选择把项目jdk改为1.8
(因为如果修改电脑的jdk我的其他项目可能就gg了)
先列一下我的myeclipse版本是2014blue
最初我是按这个方法下载jdk1.8的,链接,官方链接挂掉了,无法下载
所以只能手动安装了
1、由于电脑之前安装的是jdk1.8,所以首先找到jdk的安装目录,复制它
2、复制到myeclipse的安装目录下的binary文件夹下
3、myeclipse的Window->Preferences
4、在工程目录下
至此问题解决,Run
来源:CSDN
作者:CapsLock2019
链接:https://blog.csdn.net/SmailSad/article/details/104030546