Knife4j+Axios+Redis前后端分离架构下的 API 管理与会话方案(最新推荐)

spring:
  mvc:
    pathmatch:
      matching-strategy: ant_path_matcher
      profiles:
        active: dev

使用 npm:
 npm install axios
使用 bower:
 bower install axios
使用 yarn
    yarn add axios
使用 cdn:
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>

// Set config defaults when creating the instance
//自定义实例默认值
import axios from "axios";
const myAxios = axios.create({
    baseURL: 'http://localhost:8080/api'
});
//拦截器
// 添加请求拦截器
myAxios.interceptors.request.use(function (config) {
    // 在发送请求之前做些什么
    console.log("请求发送了",config)
    return config;
}, function (error) {
    // 对请求错误做些什么
    return Promise.reject(error);
});
// 添加响应拦截器
myAxios.interceptors.response.use(function (response) {
    // 对响应数据做点什么
    console.log("请求收到了了",response)
    return response;
}, function (error) {
    // 对响应错误做点什么
    return Promise.reject(error);
});
export default myAxios;

import javax.servlet.*;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
 * Session过滤器：验证请求的Session有效性
 */
public class SessionFilter implements Filter {
    private final RedisSessionManager sessionManager = new RedisSessionManager("localhost", 6379);
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        HttpServletResponse httpResponse = (HttpServletResponse) response;
        // 1. 从Cookie中获取Session ID
        String sessionId = extractSessionIdFromCookie(httpRequest);
        // 2. 验证Session
        UserInfo userInfo = sessionManager.getSession(sessionId);
        if (userInfo == null) {
            // 未登录，重定向到登录页
            httpResponse.sendRedirect("/login");
            return;
        }
        // 3. 将用户信息存入请求属性，供后续处理使用
        httpRequest.setAttribute("currentUser", userInfo);
        // 4. 继续请求处理
        chain.doFilter(request, response);
    }
    /**
     * 从Cookie中提取Session ID
     */
    private String extractSessionIdFromCookie(HttpServletRequest request) {
        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                if ("JSESSIONID".equals(cookie.getName())) {
                    return cookie.getValue();
                }
            }
        }
        return null;
    }
}