1.@NotNull ：屬性值不為空
2.@Profiles

@Configuration  
@Profile("production")  
public class ProductionConfiguration {  
// ...  
}  

3.@PathVariable是用來獲得請求url中的動態參數的
例子：

@RestController
@RequestMapping(value=”/users”)
public class MyRestController {
    @RequestMapping(value=”/{user}”, method=RequestMethod.GET)
    public User getUser(@PathVariable Long user) {
    // …
    }
    @RequestMapping(value=”/{user}/customers”, method=RequestMethod.GET)
    List getUserCustomers(@PathVariable Long user) {
    // …
    }
    @RequestMapping(value=”/{user}”, method=RequestMethod.DELETE)
    public User deleteUser(@PathVariable Long user) {
    // …
    }
}

SpringBoot雞湯(註解集合二)