spring boot 拦截器配置

最近打算配置一下spring boot security,在此之前先将过去写的拦截器总结一下。

使用工具:

1.spring boot 2.1.0

2.HandlerInterceptor

使用目的：权限校验、防重复提交等等一系列的事情

基本的使用方法就是，1.新建方法类实现HandlerInterceptor接口

@Component
public class LoginInterceptor implements HandlerInterceptor{
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //这里使用session验证用户是否登录，根据情况返回boolean类型值
        HttpSession session = request.getSession();
        if(session.getAttribute("username") == null) {
        	String url = "login";
        	response.sendRedirect(url);
        	return false;
        }else {
        	return true;
        }
    }
 
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable ModelAndView modelAndView) throws Exception {
    
    }
 
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception {
    
    }

}

2.新建配置类实现WebMvcConfigurer接口

@Configuration
public class WebConfigurer implements WebMvcConfigurer {
	@Autowired
    private LoginInterceptor loginInterceptor;
    // 配置静态资源
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
    	
          
    }
 
    // 注册拦截器
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // addPathPatterns("/**")   拦截所有的请求，
        // excludePathPatterns("/login")   不拦截登录页面
       registry.addInterceptor(loginInterceptor).addPathPatterns("/**").excludePathPatterns("/login");
    }
}

额，在拦截器配置的同时，顺带配置一下静态资源

在application.properties配置文件中写

#虚拟路径
web.upload-path=
spring.mvc.static-path-pattern=/**
spring.resources.static-locations=classpath:/META-INF/resources/,classpath:/resources/,classpath:/static/,file:${web.upload-path}

在addResourceHandlers中配置静态文件

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    	  
  registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
        
 registry.addResourceHandler("/templates/**").addResourceLocations("classpath:/templates/");
    }

如何在浏览器可以直接访问静态资源了

spring boot 拦截器配置

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