springboot页面加载时找不到静态资源下的文件，js与css以及图片，拦截器
最近在使用springboot时，前几天正常访问的页面，突然间访问不到js、css、图片等静态资源。经过排查发现是由于我发现程序中提示webmvcconfigureradapter已过期，所以改成了WebMvcConfigurationSupport 而WebMvcConfigurationSupport在 springboot的web自动配置类WebMvcAutoConfiguration 上有条件注解，这个注解的意思是在项目类路径中缺少WebMvcConfigurationSupport类型的bean时改自动配置类才会生效 @ConditionalOnMissingBean(WebMvcConfigurationSupport.class) 所以当我们使用拦截器并继承WebMvcConfigurationSupport这个类的时候需要重写addInterceptors这个方法 所以拦截器的配置应该如下 代码1： package com.example.syscloud.Interceptor; import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport; @Configurationpublic class WebSecurityConfig extends WebMvcConfigurationSupport { @Bean public SessionInterceptor getSessionInterceptor() { return new SessionInterceptor(); } @Override protected void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/**").addResourceLocations("classpath:/static/"); super.addResourceHandlers(registry); } @Override public void addInterceptors(InterceptorRegistry registry) { /*调用我们创建的SessionInterceptor。 * addPathPatterns("/**)的意思是这个链接下的都要进入到SessionInterceptor里面去执行 * excludePathPatterns("/login")的意思是login的url可以不用进入到SessionInterceptor中，直接 * 放过执行。 * 注意：如果像注释那样写是不可以的。这样等于是创建了多个Interceptor。而不是只有一个Interceptor * * */ SessionInterceptor sessionInterceptor=new SessionInterceptor(); registry.addInterceptor(sessionInterceptor).addPathPatterns("/**") .excludePathPatterns("/user/login","/userAPI/login","/user/defaultKaptcha","/publicPage/login","/css/**","/js/**","/img/**","/static/**","/mapper/**"); super.addInterceptors(registry); } }代码2： package com.example.syscloud.Interceptor; import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONObject;import com.example.syscloud.bean.templeBean.UserTokenBean;import com.example.syscloud.token.TokenUse;import com.example.syscloud.unit.ReturnCode;import com.example.syscloud.unit.ReturnData;import com.example.syscloud.unit.UserTokenMap;import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView; import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;import java.util.HashMap;import java.util.Map; public class SessionInterceptor implements HandlerInterceptor { /*在执行Controller的任务之前判断是否有Session信息 如果有Session信息就往下执行，去调用Controller。 如果没有Session就跳转到登录页面 */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { response.setCharacterEncoding("utf-8"); String token=request.getHeader("token"); String android=request.getHeader("android"); if (token!=null){ boolean bo= TokenUse.tokenVerify(token); int userid=TokenUse.getUserID(token); UserTokenBean userTokenBean =UserTokenMap.getMap(userid); if (userTokenBean!=null) { if (userTokenBean.getToken().equals(token) && bo) { Map<Integer,UserTokenBean> map=new HashMap<>(); map=UserTokenMap.getMap(); map.put(userid,userTokenBean); UserTokenMap.setMap(map); return true; } } } HttpSession session=request.getSession(); if(session.getAttribute("LoginName")!=null){ return true; } if(android!=null){ ReturnData returnData=new ReturnData(); returnData.setCode(ReturnCode.Timeout.value()); returnData.setMessage(ReturnCode.Timeout.getDesc()); String str=JSON.toJSONString(returnData); JSONObject jsonObject=JSON.parseObject(str); response.getWriter().print(jsonObject); }else { //拦截后返回的页面 String url = "/publicPage/login"; // response.sendRedirect(url); response.getWriter().print("<script> top.window.location.href = '"+url+"?r='+Math.random() ;</script>"); } return false; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { } }第二段代码是通过验证session与token实现拦截与放行功能，我写一起了，可根据需要删除部分内容
