由spring配置引起的属性保持问题

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参考地址?http://blog.csdn.net/peng658890/article/details/7233718

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ps. spring的scope

5 types of bean scopes supported :

1. singleton Return a single bean instance per Spring IoC container
2. prototype Return a new bean instance each time when requested
3. request Return a single bean instance per HTTP request. *
4. session Return a single bean instance per HTTP session. *
5. globalSession Return a single bean instance per global HTTP session. *

In most cases, you may only deal with the Spring’s core scope singleton and prototype, and the default scope is singleton.

P.S * means only valid in the context of a web-aware Spring ApplicationContext

?from?http://www.mkyong.com/spring/spring-bean-scopes-examples/