Null or Optional in Java
NullPointerException is the most annoying Exception which I hate the most. However, it’s also the Exception that has most appearance. For almost all the function parameter passed in, i need to check whether this Object is Null or not. If the Object is null, all the following code will fail. Unfortunately, it’s a runtime Exception, until the app is really running, we can’t find the error location. Sometimes, even we found the null object cause this error, we still need long time to find the reason which cause this object is null.
Angularjs Spring Security CSRF configuration
Recently, my current project is built by Spring mvc framework, and base on project requirement, also integrated with Spring security. My project use spring 4.0 and spring security 3.2.8. To prevent Cross-Site Request Forgery attack, I enable csrf in my spring security context.
