WebMvcConfigurationSupport 静态资源失效问题

编程教程 > Java > Spring (440) 2024-11-26 14:39:04

前言

在使用SpringBoot做项目时，需要使用拦截器判断用户是否登陆，来决定用户是否能访问某些页面。
起初，通过继承来WebMvcConfigurerAdapter来注册拦截器，但是由于SpringBoot 2.0之后，就将WebMvcConfigurerAdapter废弃使用了，推荐使用WebMvcConfigurationSupport,但是使用WebMvcConfigurationSupport后发现网页不能获取到静态资源。

例如：

swagger-ui 接口文档无法访问 doc.html接口文档无法访问

Swagger问题：No mapping for GET /swagger-ui.html

历史配置：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.web.servlet.config.annotation.*;
@SpringBootConfiguration
public class AdminLoginAdapter extends WebMvcConfigurerAdapter {
   @Autowired
   AdminLoginInterceptor adminLoginInterceptor;
   @Override
   public void addInterceptors(InterceptorRegistry registry) {
       registry.addInterceptor(adminLoginInterceptor).addPathPatterns("/admin").excludePathPatterns("/login/**");
       registry.addInterceptor(adminLoginInterceptor).addPathPatterns("/index");
       super.addInterceptors(registry);
   }

这里提供两种解决方法：

一、重写 addResourceHandlers()方法，加入静态文件路径


package com.donglei.myblog.interceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.web.servlet.config.annotation.*;
@SpringBootConfiguration
public class AdminLoginAdapter extends WebMvcConfigurationSupport {
   @Autowired
   AdminLoginInterceptor adminLoginInterceptor;
   @Override
   public void addInterceptors(InterceptorRegistry registry) {
       registry.addInterceptor(adminLoginInterceptor).addPathPatterns("/admin").excludePathPatterns("/login/**");
       registry.addInterceptor(adminLoginInterceptor).addPathPatterns("/index");
       super.addInterceptors(registry);
   }
   @Override
   public void addResourceHandlers(ResourceHandlerRegistry registry) {
   //重写这个方法，映射静态资源文件
       registry.addResourceHandler("/**")
               .addResourceLocations("classpath:/resources/")
               .addResourceLocations("classpath:/static/")
               .addResourceLocations("classpath:/public/");
       super.addResourceHandlers(registry);
   }
}

实践证明，这种方法行之有效，但是有的朋友可能表示，这种方法还是有问题，那就第二种方法，实现WebMvcConfigurer接口

二、实现WebMvcConfigurer接口【推荐方案】

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.web.servlet.config.annotation.*;
@SpringBootConfiguration
public class AdminLoginAdapter implements WebMvcConfigurer {
   @Autowired
   AdminLoginInterceptor adminLoginInterceptor;
   @Override
   public void addInterceptors(InterceptorRegistry registry) {
       registry.addInterceptor(adminLoginInterceptor).addPathPatterns("/admin").excludePathPatterns("/login/**");
       registry.addInterceptor(adminLoginInterceptor).addPathPatterns("/index");
       //super.addInterceptors(registry);
   }
}

这样，就解决了WebMvcConfigurationSupport 静态资源失效问题