构建一个spring boot项目。
添加拦截器需要添加一个configuration
@Configuration @ComponentScan(basePackageClasses = Application.class, useDefaultFilters = true) public class ServletContextConfig extends WebMvcConfigurationSupport {
为了方便扫描位置,我们可以写一个接口或者入口类Application放置于最外一层的包内,这样就会扫描该类以及子包的类。
1 resources配置
在没有配置这个类的时候,我们可以在application.ym中修改静态文件位置和匹配方式:
#指定环境配置文件 spring: profiles: active: dev # 修改默认静态路径,默认为/**,当配置hello.config.ServletContextConfig后此处配置失效 mvc: static-path-pattern: /static/**
但当我们继承了WebMvcConfigurationSupport 并配置扫描后,上述resources的配置失效,还原默认配置。那么我们需要在这个类中再次指定静态资源位置:
@Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/").addResourceLocations("/**"); registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/"); }
这样访问classpath下的static包下的静态资源的url匹配为/static/xxx.js。默认匹配static下的静态文件url为/xxx.js,虽然清洁,但我感觉idea不会识别这种路径,还是改成完整的路径比较好。
2.Interceptor配置
配置登录拦截或者别的。需要创建一个拦截器类来继承HandlerInterceptorAdapter,然后只需要覆盖你想要拦截的位置就可以了。比如,我只是拦截访问方法之前:
package hello.interceptor; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Created by miaorf on 2016/8/3. */ public class LoginInterceptor extends HandlerInterceptorAdapter { private Logger logger = LoggerFactory.getLogger(LoginInterceptor.class); @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { String authorization = request.getHeader("Authorization"); logger.info("The authorization is: {}",authorization); return super.preHandle(request, response, handler); } }
写好interceptor之后需要在开始创建的ServletContextConfig中添加这个拦截器:
@Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new LoginInterceptor()) .addPathPatterns("/**") .excludePathPatterns(FAVICON_URL) ; }
完整的ServletContextConfig为:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
/* * The MIT License (MIT) * * Copyright (c) 2014-2016 abel533@gmail.com * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package hello.config; import hello.Application; import hello.interceptor.LoginInterceptor; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport; /** * */ @Configuration @ComponentScan(basePackageClasses = Application.class, useDefaultFilters = true) public class ServletContextConfig extends WebMvcConfigurationSupport { static final private String FAVICON_URL = "/favicon.ico"; static final private String PROPERTY_APP_ENV = "application.environment"; static final private String PROPERTY_DEFAULT_ENV = "dev"; /** * 发现如果继承了WebMvcConfigurationSupport,则在yml中配置的相关内容会失效。 * @param registry */ @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/").addResourceLocations("/**"); registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/"); } /** * 配置servlet处理 */ @Override public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { configurer.enable(); } @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new LoginInterceptor()) .addPathPatterns("/**") .excludePathPatterns(FAVICON_URL) ; } }
3.AOP拦截方法
相关测试代码http://www.cnblogs.com/woshimrf/p/5677337.html
本demo源码: