com.alibaba.excel写入EasyExcel异常

今天在本地从数据库取数，要插入到Excel再发送到企业微信群，在插入Excel的时候总是出现以下异常。如图所示：

com.alibaba.excel.exception.ExcelGenerateException: java.lang.ExceptionInInitializerError
 
	at com.alibaba.excel.write.ExcelBuilderImpl.addContent(ExcelBuilderImpl.java:64)
	at com.alibaba.excel.ExcelWriter.write(ExcelWriter.java:161)
	at com.alibaba.excel.ExcelWriter.write(ExcelWriter.java:146)
	at com.alibaba.excel.write.builder.ExcelWriterSheetBuilder.doWrite(ExcelWriterSheetBuilder.java:61)
	at com.li.test3.simpleWrite(test3.java:57)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Caused by: java.lang.ExceptionInInitializerError
	at net.sf.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:166)
	at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
	at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
	at net.sf.cglib.beans.BeanMap$Generator.<clinit>(BeanMap.java:64)
	at net.sf.cglib.beans.BeanMap.create(BeanMap.java:56)
	at com.alibaba.excel.write.executor.ExcelWriteAddExecutor.addJavaObjectToExcel(ExcelWriteAddExecutor.java:119)
	at com.alibaba.excel.write.executor.ExcelWriteAddExecutor.addOneRowOfDataToExcel(ExcelWriteAddExecutor.java:72)
	at com.alibaba.excel.write.executor.ExcelWriteAddExecutor.add(ExcelWriteAddExecutor.java:56)
	at com.alibaba.excel.write.ExcelBuilderImpl.addContent(ExcelBuilderImpl.java:58)
	... 29 more
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @5b80350b
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
	at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
	at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
	at net.sf.cglib.core.ReflectUtils$2.run(ReflectUtils.java:56)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:312)
	at net.sf.cglib.core.ReflectUtils.<clinit>(ReflectUtils.java:46)
	... 41 more
 

在IDEA里面增加这个配置即可：

--add-opens java.base/java.lang=ALL-UNNAMED