Spring boot 如何执行Controller中的初始化方法

Question

我有一个BaseController.java 类，所有其他类继承该BaseController,如下

 public class BaseController {
        private HttpServletRequest request;
    private HttpServletResponse response;

        public void init(HttpServletRequest request, HttpServletResponse response) {
            this.request = request;
                this.response = response;
        }
 }

我的目的是要每次请求进入具体Controller之前先掉用init方法。这个有没有可行性啊。（PS:我尝试过用拦截器，但实现不了）

Answer 1

可以是可以不过有点限制，做一个切面就可以

@RestController
public class TestController extends  BaseController{


    @GetMapping("/get")
    public String gettest(HttpServletRequest request, HttpServletResponse response,String id){

        return "测试是否调用"+id;

    }

}

public class BaseController {
private HttpServletRequest request;
private HttpServletResponse response;

public void init(HttpServletRequest request, HttpServletResponse response){
    this.request=request;
    this.response=response;
    System.out.println("basecontroller 被调用");
    System.out.println(request.getMethod());
}

}

 @Aspect
@Component
public class aspect {
    @Pointcut("execution(public * com.controller.*.*(..))")
    protected void allPublicMethodCall() {
        // no need to implement this pointcut
    }


    @Around("allPublicMethodCall()")
    public Object logDefaultApiCallInfo(ProceedingJoinPoint pjp) throws Throwable {


        Object ControllerCalled = pjp.getTarget();


        if(ControllerCalled instanceof BaseController){
            Method init=BaseController.class.getDeclaredMethod("init",new Class[]{HttpServletRequest.class, HttpServletResponse.class});

            Object[] ags=new Object[]{pjp.getArgs()[0],pjp.getArgs()[1]};
            init.invoke(ControllerCalled,ags);


        }


        Object returnValue = pjp.proceed();

        return returnValue;

    }
}