新建com.itheima.stock.security.handler.StockAccessDenyHandler

package com.itheima.stock.security.handler;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.itheima.stock.vo.resp.R;
import com.itheima.stock.vo.resp.ResponseCode;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.MediaType;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 用户无权限访问，访问拒绝的处理器
 */
@Slf4j
public class StockAccessDenyHandler implements AccessDeniedHandler {
    @Override
    public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException accessDeniedException) throws IOException, ServletException {
        log.warn("当前用户无此资源访问权限，原因:{}", accessDeniedException.getMessage());
        response.setContentType(MediaType.APPLICATION_JSON_VALUE);
        response.setCharacterEncoding("UTF-8");
        R<Object> error = R.error(ResponseCode.NOT_PERMISSION);
        response.getWriter().write(new ObjectMapper().writeValueAsString(error));
    }
}

新建com.itheima.stock.security.handler.StockAuthenticationEntryPoint

package com.itheima.stock.security.handler;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.itheima.stock.vo.resp.R;
import com.itheima.stock.vo.resp.ResponseCode;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.MediaType;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 匿名用户访问拒绝的处理器
 */
@Slf4j
public class StockAuthenticationEntryPoint implements AuthenticationEntryPoint {
    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException {
        log.warn("未登录访问，原因：{}", authException.getMessage());
        response.setContentType(MediaType.APPLICATION_JSON_VALUE);
        response.setCharacterEncoding("UTF-8");
        R<ResponseCode> error = R.error(ResponseCode.ANONMOUSE_NOT_PERMISSION);
        response.getWriter().write(new ObjectMapper().writeValueAsString(error));
    }
}

在SecurityConfig类中配置

@Override
    public void configure(HttpSecurity http) throws Exception {


/*
   其他代码
*/

 //配置拒绝处理器
        http.exceptionHandling().accessDeniedHandler(new StockAccessDenyHandler()).authenticationEntryPoint(new StockAuthenticationEntryPoint());

}

未登录用户访问测试

控制台打印

2024-01-20 00:52:10.878  WARN 11848 --- [nio-8091-exec-2] c.i.s.s.h.StockAuthenticationEntryPoint  : 未登录访问，原因：Full authentication is required to access this resource