问题
I have two questions regarding classpath: option in spring :-
1) Does classpath: search for resource relative to the document in which it is specified(in case of web applications)?
Suppose I use the following:
<bean class="mybean">
<property name="myresource" value="classpath:myfile.txt"/>
</bean>
in myconfig.xml under /WEB-INF/classes/config/myconfig.xml. Then from where it will start its search?
2)Is it faster to search if I give direct location of the resource instead of giving classpath: i.e
<bean class="mybean">
<property name="myresource" value="classpath:/WEB-INF/classes/myfolder/myfile.txt"/>
</bean>
instead of
<bean class="mybean">
<property name="myresource" value="classpath:myfile.txt"/>
</bean>
Thanks...
回答1:
Does
classpath:search for resource relative to the document in which it is specified(in case of web applications)?
No, classpath: is always relative to the classpath root. If you put a / at the start of the path, it is silently removed.
Is it more fast to search if i give direct location of resource instead e.g.
classpath:/WEB-INF/classes/myfolder/myfile.txt
No, that won't work at all. The classpath root contains /WEB-INF/classes, so the path should be relative to that.
Don't confuse classpath: paths with file paths, they have no relation to each other.
回答2:
Take a look at http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/resources.html#resources-classpath-wildcards
This special prefix specifies that all classpath resources that match the given name must be obtained (internally, this essentially happens via a ClassLoader.getResources(...) call), and then merged to form the final application context definition.
So classpath: starts at the root of your classpath.
来源：https://stackoverflow.com/questions/9092713/using-classpath-in-spring