SpringBoot高版本添加拦截器，替代WebMvcConfigurerAdapter

左手的ㄟ右手 2022-04-22 05:58 181阅读 0赞

一.创建类实现HandlerInterceptor接口，重写接口中的三个方法

@Component注解，方便后面使用时进行注入

@Slf4j注解，简化log写法，添加lombok依赖后可以使用

package com.datang.demo;
    
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.stereotype.Component;
    import org.springframework.web.servlet.HandlerInterceptor;
    import org.springframework.web.servlet.ModelAndView;
    
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    @Slf4j
    @Component
    public class InterceptorConfig implements HandlerInterceptor {
    
        @Override
        public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object obj) throws Exception{
            log.info("自定义拦截器");
            return true;
        }
    
        @Override
        public void postHandle(HttpServletRequest request, HttpServletResponse response, Object obj, ModelAndView modelAndView){
            log.info("处理请求完成后视图渲染之前的处理操作");
        }
    
        @Override
        public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object obj, Exception e) throws Exception {
            log.info("视图渲染之后的操作");
        }
    
    }

二.spring boot 2.0、Spring 5.0 以后WebMvcConfigurerAdapter会取消掉，新的版本解决方案目前有两种：

1） 创建类继承WebMvcConfigurationSupport类，覆盖其addInterceptors接口并注册我们自己的拦截器

@SpringBootConfiguration注解表明这是一个配置类

package com.datang.demo;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.SpringBootConfiguration;
    import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
    
    @SpringBootConfiguration
    public class WebAppConfig extends WebMvcConfigurationSupport {
    
        @Autowired
        InterceptorConfig interceptorConfig;
    
        @Override
        public void addInterceptors(InterceptorRegistry registry) {
            // 注册自定义拦截器，添加拦截路径和排除拦截路径
            registry.addInterceptor(interceptorConfig).addPathPatterns("/**").excludePathPatterns("/logger/**");
        }
    }

2）直接实现WebMvcConfigurer

package com.datang.demo;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.SpringBootConfiguration;
    import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
    import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
    
    @SpringBootConfiguration
    public class WebAppConfig implements WebMvcConfigurer {
    
        @Autowired
        InterceptorConfig interceptorConfig;
    
        @Override
        public void addInterceptors(InterceptorRegistry registry) {
            // 注册自定义拦截器，添加拦截路径和排除拦截路径
            registry.addInterceptor(interceptorConfig).addPathPatterns("/**").excludePathPatterns("/logger/**");
        }
    }

运行结果如下： ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNTg3NDI_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTMwNTg3NDI_size_16_color_FFFFFF_t_70]: /images/20220422/42d4db90730d441689af87fb29de4faa.png