Hibernate初级

Could not parse mapping document: null (INPUT_STREAM)
org.hibernate.boot.InvalidMappingException: Could not parse mapping document: null (INPUT_STREAM)
	at org.hibernate.boot.jaxb.internal.InputStreamXmlSource.doBind(InputStreamXmlSource.java:46)

Caused by: org.hibernate.boot.MappingException: Unable to perform unmarshalling at line number 7 and column 13. Message: cvc-enumeration-valid: Value 'true' is not facet-valid with respect to enumeration '[false, proxy]'. It must be a value from the enumeration. : origin(null)

Caused by: javax.xml.bind.UnmarshalException: null

报错的意思是使用了未定义的枚举值true，就报错了

首先看报错的源文件，定位到true这里：

找到hibernate-core-5.0.11.Final.jar包，反编译看到文件-org.hibernate.xsd.mapping.legacy-mapping-4.0.xsd里的内容，找到composite-id的规范定义：

        省略
                        
                    
                    省略
    

再找key-many-to-one对应的CompositeKeyManyToOneType的定义，进而找到：

这里发现枚举值不包含true的。因此进行xml验证时报错了

• 请不要使用没定义的枚举值

lazy="true"