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错误:出现JNI错误,请检查安装并在IntelliJ IDEA中重试

intellij-idea java

banan3'14 · 技术社区 · 6 年前

我用Java编写了一个简单的项目,使用IntelliJ IDEA中的默认配置。我建立了这个项目并成功地运行了它。我用的是Java1.9。我想检查它是否与Java1.8一起运行。我将配置中的JRE从Java 1.9更改为java1.8并运行我的项目。出现以下错误:

Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: Main has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495)

这个问题: IntelliJ Error: A JNI error has occurred, please check your installation and try again 是不同的,因为它有 NoClassDefFoundError 而不是 UnsupportedClassVersionError A JNI error has occurred, please check your installation and try again in Eclipse x86 Windows 8.1

2 回复 | 直到 6 年前

banan3'14 6 年前

.idea/misc.xml .

<component name="ProjectRootManager" version="2" languageLevel="JDK_1_9" project-jdk-name="9.0" project-jdk-type="JavaSDK">
  <output url="file://$PROJECT_DIR$/out" />
</component>

我把它改成

<component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="8.0" project-jdk-type="JavaSDK">
  <output url="file://$PROJECT_DIR$/out" />
</component>

然后出现了一个applet,它帮助我添加了一个新的JDK(Java8),我能够运行我的项目,错误消失了。