这篇文章主要介绍了SpringBoot添加自定义拦截器的实现代码,非常不错，具有一定的参考借鉴价值，需要的朋友可以参考下
在Controller层时，往往会需要校验或验证某些操作，而在每个Controller写重复代码，工作量比较大，这里在Springboot项目中 ，通过继承WebMvcConfigurerAdapter，添加拦截器。
1、WebMvcConfigurerAdapter源码
/* * Copyright 2002-2016 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.springframework.web.servlet.config.annotation; import java.util.List; import org.springframework.format.FormatterRegistry; import org.springframework.http.converter.HttpMessageConverter; import org.springframework.validation.MessageCodesResolver; import org.springframework.validation.Validator; import org.springframework.web.method.support.HandlerMethodArgumentResolver; import org.springframework.web.method.support.HandlerMethodReturnValueHandler; import org.springframework.web.servlet.HandlerExceptionResolver; /** * An implementation of {@link WebMvcConfigurer} with empty methods allowing * subclasses to override only the methods they're interested in. * * @author Rossen Stoyanchev * @since 3.1 */ public abstract class WebMvcConfigurerAdapter implements WebMvcConfigurer { /** * {@inheritDoc} * <p>This implementation is empty. */ @Override public void configurePathMatch(PathMatchConfigurer configurer) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void configureContentNegotiation(ContentNegotiationConfigurer configurer) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void configureAsyncSupport(AsyncSupportConfigurer configurer) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void addFormatters(FormatterRegistry registry) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void addInterceptors(InterceptorRegistry registry) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void addCorsMappings(CorsRegistry registry) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void addViewControllers(ViewControllerRegistry registry) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void configureViewResolvers(ViewResolverRegistry registry) { } /** * {@inheritDoc} * </p><p>This implementation is empty. */ @Override public void addArgumentResolvers(List argumentResolvers) { } /** * {@inheritDoc} * <p>This implementation is empty. */ @Override public void addReturnValueHandlers(List returnValueHandlers) { } /** * {@inheritDoc} * <p>This implementation is empty. */ @Override public void configureMessageConverters(List converters) { } /** * {@inheritDoc} * <p>This implementation is empty. */ @Override public void configureHandlerExceptionResolvers(List exceptionResolvers) { } /** * {@inheritDoc} * <p>This implementation is empty. */ @Override public void extendHandlerExceptionResolvers(List exceptionResolvers) { } /** * {@inheritDoc} * <p>This implementation returns {@code null}. */ @Override public Validator getValidator() { return null; } /** * {@inheritDoc} * </p><p>This implementation returns {@code null}. */ @Override public MessageCodesResolver getMessageCodesResolver() { return null; } }
可以看出，该类 还能配置其他很多操作，例如异常处理，跨域请求等配置。
2、自动义Web配置类
import org.s<em style="color:transparent">来源[email protected]搞@^&代*@码网</em>pringframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; @Configuration public class WebMvcConfig extends WebMvcConfigurerAdapter { @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(getMyInterceptor()).addPathPatterns("/**"); } @Bean public MyInterceptor getMyInterceptor(){ return new MyInterceptor(); } }
如果需要添加多个拦截器，InterceptorRegistry registry.addInterceptor方法
public InterceptorRegistration addInterceptor(HandlerInterceptor interceptor) { InterceptorRegistration registration = new InterceptorRegistration(interceptor); this.registrations.add(registration); return registration; }
registrations是个数组结构，可以添加多个
3、自动义拦截器
import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.method.HandlerMethod; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; public class MyInterceptor extends HandlerInterceptorAdapter { final Logger logger = LoggerFactory.getLogger(getClass()); @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { //拦截操作 return true; } }
总结
以上所述是小编给大家介绍的SpringBoot添加自定义拦截器的实现代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对gaodaima搞代码网网站的支持！
以上就是SpringBoot添加自定义拦截器的实现代码的详细内容，更多请关注gaodaima搞代码网其它相关文章！
搞代码网（gaodaima.com）提供的所有资源部分来自互联网，如果有侵犯您的版权或其他权益，请说明详细缘由并提供版权或权益证明然后发送到邮箱[email protected]，我们会在看到邮件的第一时间内为您处理，或直接联系QQ：872152909。本网站采用BY-NC-SA协议进行授权
转载请注明原文链接：SpringBoot添加自定义拦截器的实现代码
转载请注明原文链接：SpringBoot添加自定义拦截器的实现代码
