BUG05

报错信息

java.lang.IllegalArgumentException: Source must not be null
	at org.springframework.util.Assert.notNull(Assert.java:115) ~[spring-core-4.2.5.RELEASE.jar:4.2.5.RELEASE]
	at org.springframework.beans.BeanUtils.copyProperties(BeanUtils.java:600) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
	at org.springframework.beans.BeanUtils.copyProperties(BeanUtils.java:546) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]

copyProperties(source ,target)

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原文地址：https://www.cnblogs.com/zhazhaacmer/p/12207348.html