SpringBoot自定義註解實現Token校驗的方法

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 Token {
  boolean validate() default true;
}

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
 
@Target(ElementType.PARAMETER)
@Retention(RetentionPolicy.RUNTIME)
public @interface LoginUser {
}

import com.example.demo.annotation.Token;
import com.example.demo.entity.User;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
@Component
@Slf4j
public class AuthorizationInterceptor extends HandlerInterceptorAdapter {
  public static final String USER_KEY = "USER_ID";
  public static final String USER_INFO = "USER_INFO";
  @Override
  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    Token annotation;
    if(handler instanceof HandlerMethod) {
      annotation = ((HandlerMethod) handler).getMethodAnnotation(Token.class);
    }else{
      return true;
    }
    //沒有聲明需要權限,或者聲明不驗證權限
    if(annotation == null || annotation.validate() == false){
      return true;
    }
    //從header中獲取token
    String token = request.getHeader("token");
    if(token == null){
      log.info("缺少token，拒絕訪問");
      return false;
    }
 
    //查詢token信息
//    User user = redisUtils.get(USER_INFO+token,User.class);
//    if(user == null){
//      log.info("token不正確，拒絕訪問");
//      return false;
//    }
 
    //token校驗通過，將用戶信息放在request中，供需要用user信息的接口裡從token取數據
    request.setAttribute(USER_KEY, "123456");
    User user=new User();
    user.setId(10000L);
    user.setUserName("[email protected]");
    user.setPhoneNumber("15702911111");
    user.setToken(token);
    request.setAttribute(USER_INFO, user);
    return true;
  }
}

import com.example.demo.annotation.LoginUser;
import com.example.demo.entity.User;
import com.example.demo.interceptor.AuthorizationInterceptor;
import org.springframework.core.MethodParameter;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;
@Component
public class LoginUserHandlerMethodArgumentResolver implements HandlerMethodArgumentResolver
{
  @Override
  public boolean supportsParameter(MethodParameter methodParameter) {
    return methodParameter.getParameterType().isAssignableFrom(User.class)&&methodParameter.hasParameterAnnotation(LoginUser.class);
  }
 
  @Override
  public Object resolveArgument(MethodParameter methodParameter, ModelAndViewContainer modelAndViewContainer, NativeWebRequest nativeWebRequest, WebDataBinderFactory webDataBinderFactory) throws Exception {
    //獲取登陸用戶信息
    Object object = nativeWebRequest.getAttribute(AuthorizationInterceptor.USER_INFO, RequestAttributes.SCOPE_REQUEST);
    if(object == null){
      return null;
    }
    return (User)object;
  }
}

import com.example.demo.interceptor.AuthorizationInterceptor;
import com.example.demo.resolver.LoginUserHandlerMethodArgumentResolver;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import java.util.List;
 
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
  @Autowired
  private AuthorizationInterceptor authorizationInterceptor;
  @Autowired
  private LoginUserHandlerMethodArgumentResolver loginUserHandlerMethodArgumentResolver;
 
  @Override
  public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(authorizationInterceptor).addPathPatterns("/api/**");
  }
 
  @Override
  public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
    argumentResolvers.add(loginUserHandlerMethodArgumentResolver);
  }
}

import com.example.demo.annotation.LoginUser;
import com.example.demo.annotation.Token;
import com.example.demo.entity.User;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
 
@RestController
@RequestMapping(value = "/api")
@Slf4j
public class TestController {
  @RequestMapping(value="/test",method = RequestMethod.POST)
  @Token
  public String test(@LoginUser User user){
    System.out.println("需要token才可以訪問，呵呵……");
    log.info("user："+user.toString());
    return "test";
  }
  @RequestMapping(value="/noToken",method = RequestMethod.POST)
  public String noToken(){
    System.out.println("不用token就可以訪問……");
    return "test";
  }
}