springboot开发教程-设置拦截器

设置url拦截器，为接口设置一道安全验证机制

package com.toy.jyzc.Filter;

import cn.hutool.json.JSONObject;

import org.springframework.context.annotation.Configuration;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter(filterName = "loginCheckFilter", urlPatterns = "/*")
@Configuration
public class LoginCheckFilter implements Filter {
    //路径匹配器，支持通配符，可以匹配通配符。
    public static final AntPathMatcher PATH_MATCHER = new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;


        //1.获取本次请求的uri
        String requestURI = request.getRequestURI();

        //定义不需要处理的请求路径
        String[] urls = new String[]{
                "/login",
                "/404",
                "/error",
                "/login/getCode",
                "/static/**"
        };

        //2.判断本次请求是否需要处理
        boolean check = check(urls,requestURI);

        //3.如果不需要处理，则直接放行
        if(check) {
            filterChain.doFilter(request, response);
            return;
        }

        //4.判断登录状态，如果已登录，则直接放行
        if(request.getSession().getAttribute("sys_authorToken") != null) {
//            Long id = (Long) request.getSession().getAttribute("employee");
//            BaseContext.setCurrentId(id);
            //验证身份
            filterChain.doFilter(request, response);
            return;
        }

//
//      //5.如果未登录则返回未登录结果，通过输出流方式向客户端页面响应数据
//      response.getWriter().write("{\"code\":\"400\",\"msg\":\"未登录\"}");
        //跳转登录页面
        response.sendRedirect("/login");
        return;
    }

    /**
     * 路径匹配，检查本次请求是否需要放行
     * @param urls
     * @param requestURI
     * @return 需要放行：true, 否则：false
     */
    public boolean check(String[] urls, String requestURI) {
        for (String url : urls) {
            boolean match = PATH_MATCHER.match(url, requestURI);
            if(match) {
                return true;
            }
        }
        return false;
    }
}

上面对相关地址，资源进行了放行

"/login",
"/404",
"/error",
"/login/getCode",
"/static/**"

你也可以对如/api等设置验证机制