wxj
增加了Service的桩
 星杰的东东
Merge branch 'master' of https://github.com/walkerWx/BookLendSystem.git

Conflicts:
	.settings/org.eclipse.core.resources.prefs
	src/main/java/edu/nju/booklend/data/service/jpa/BookServiceImpl.java
	src/main/java/edu/nju/booklend/view/BorrowerView.java