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【求助】关于安装xlsx包遇到的疑点问题 错误代码如下 > library(xlsx) WARNING: Initial Java 12 release has broken JNI support and does NOT work. Use stable Java 11 (or watch for 12u if avaiable). ERROR: Java exception occurred during rJava bootstrap - see stderr for Java stack trace. Exception in thread "main" java.lang.NoClassDefFoundError: java.lang.System WARNING: Initial Java 12 release has broken JNI support and does NOT work. Use stable Java 11 (or watch for 12u if avaiable). ERROR: Java exception occurred during rJava bootstrap - see stderr for Java stack trace. Exception in thread "main" java.lang.NullPointerException at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:291) at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:281) at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:198) at java.base/java.lang.reflect.Method.setAccessible(Method.java:192) Error: package or namespace load failed for ‘xlsx’: loadNamespace()里算'xlsx'时.onLoad失败了，详细内容： 调用: .jcall("java.lang.System", "S", "getProperty", "java.version") 错误: RcallMethod: cannot determine object class
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