[SpringBoot] 8. aop 获取 request response

package com.example.easy_im.aop;
import com.example.easy_im.Context;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import java.util.Objects;
@Aspect
@Component
@Slf4j
public class TokenAop {
    @Around("@annotation(com.example.easy_im.annotation.NeedToken)")
    public Object check(ProceedingJoinPoint pjp) throws Throwable {
        try {
            HttpServletRequest servletRequest = ((ServletRequestAttributes) Objects.requireNonNull(RequestContextHolder.getRequestAttributes())).getRequest();
            HttpServletResponse servletResponse = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();
            String authorizationHeader = servletRequest.getHeader("Authorization");
            if(StringUtils.isBlank(authorizationHeader) || servletResponse == null) {
                servletResponse.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
                return "请携带Authorization请求头";
            }
            // 执行目标方法
            Object proceed = pjp.proceed();
            Context.clear();
            return proceed;
        } catch (Exception e) {
            return "fail";
        }
    }
}

package com.example.easy_im.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface NeedToken {
}

package com.example.easy_im.controller;
import com.example.easy_im.Context;
import com.example.easy_im.annotation.NeedToken;
import com.example.easy_im.dao.UserDao;
import com.example.easy_im.entity.User;
import com.example.easy_im.util.TokenUtil;
import jakarta.annotation.Resource;
import org.springframework.data.domain.Example;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import java.util.Optional;
@RestController
@RequestMapping("/user")
public class UserController {
    @Resource
    private UserDao userDao;
    @PostMapping("/login")
    public String login(@Validated @RequestBody User user) {
        User obj = userDao.findUserByNameAndPwd(user.getUserName(), user.getUserPwd());
        if(obj == null) {
            return "fail";
        }
        return TokenUtil.generateToken(obj);
    }
    @DeleteMapping("/logout")
    @NeedToken
    public String logout() {
        String token = Context.getToken();
        TokenUtil.destroyToken(token);
        return "ok";
    }
}