记一次异常处理，断点排查_异常断点-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_46050989/article/details/137929641

本文讲述了在Java项目中遇到ArrayStoreException:TypeNotPresentExceptionProxy异常的排查过程，包括通过异常断点定位问题、全局搜索异常类型以及处理方法。作者介绍了如何在IDEA中添加异常断点并分析了该异常是由于某个类未加载导致的代理异常。

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通过打异常断点，找到报错原因

1. 原因，启动项目异常

Caused by: java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxy

Caused by: java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxy
	at sun.reflect.annotation.AnnotationParser.parseClassArray(AnnotationParser.java:724) ~[na:1.8.0_381]
	at sun.reflect.annotation.AnnotationParser.parseArray(AnnotationParser.java:531) ~[na:1.8.0_381]
	at sun.reflect.annotation.AnnotationParser.parseMemberValue(AnnotationParser.java:355) ~[na:1.8.0_381]
	at sun.reflect.annotation.AnnotationParser.parseAnnotation2(AnnotationParser.java:286) ~[na:1.8.0_381]
	at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:120) ~[na:1.8.0_381]
	at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:72) ~[na:1.8.0_381]
	at java.lang.reflect.Field.declaredAnnotations(Field.java:1150) ~[na:1.8.0_381]
	at java.lang.reflect.Field.declaredAnnotations(Field.java:1148) ~[na:1.8.0_381]
	at java.lang.reflect.Field.getAnnotation(Field.java:1120) ~[na:1.8.0_381]
	at com.baomidou.mybatisplus.core.metadata.TableInfoHelper.lambda$getAllFields$3(TableInfoHelper.java:504) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174) ~[na:1.8.0_381]
	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1384) ~[na:1.8.0_381]
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) ~[na:1.8.0_381]
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472) ~[na:1.8.0_381]
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[na:1.8.0_381]
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_381]
	at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[na:1.8.0_381]
	at com.baomidou.mybatisplus.core.metadata.TableInfoHelper.getAllFields(TableInfoHelper.java:506) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at com.baomidou.mybatisplus.core.metadata.TableInfoHelper.initTableFields(TableInfoHelper.java:285) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at com.baomidou.mybatisplus.core.metadata.TableInfoHelper.initTableInfo(TableInfoHelper.java:176) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at com.baomidou.mybatisplus.core.metadata.TableInfoHelper.initTableInfo(TableInfoHelper.java:153) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at com.baomidou.mybatisplus.core.injector.AbstractSqlInjector.inspectInject(AbstractSqlInjector.java:48) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at com.baomidou.mybatisplus.core.MybatisMapperAnnotationBuilder.parserInjector(MybatisMapperAnnotationBuilder.java:132) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at com.baomidou.mybatisplus.core.MybatisMapperAnnotationBuilder.parse(MybatisMapperAnnotationBuilder.java:122) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at com.baomidou.mybatisplus.core.MybatisMapperRegistry.addMapper(MybatisMapperRegistry.java:95) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at com.baomidou.mybatisplus.core.MybatisConfiguration.addMapper(MybatisConfiguration.java:126) ~[mybatis-plus-core-3.5.1.jar:3.5.1]
	at org.apache.ibatis.builder.xml.XMLMapperBuilder.bindMapperForNamespace(XMLMapperBuilder.java:432) ~[mybatis-3.5.9.jar:3.5.9]
	at org.apache.ibatis.builder.xml.XMLMapperBuilder.parse(XMLMapperBuilder.java:97) ~[mybatis-3.5.9.jar:3.5.9]
	at com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean.buildSqlSessionFactory(MybatisSqlSessionFactoryBean.java:560) ~[mybatis-plus-extension-3.5.1.jar:3.5.1]
	... 70 common frames omitted

2. 在IDEA中全局查找这个异常类

双击 shift 查找
在这里插入图片描述
源码如下，看起来是个代理异常

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by FernFlower decompiler)
//

package sun.reflect.annotation;

public class TypeNotPresentExceptionProxy extends ExceptionProxy {
    private static final long serialVersionUID = 5565925172427947573L;
    String typeName;
    Throwable cause;

    public TypeNotPresentExceptionProxy(String var1, Throwable var2) {
        this.typeName = var1;
        this.cause = var2;
    }

    protected RuntimeException generateException() {
        return new TypeNotPresentException(this.typeName, this.cause);
    }
}