spring boot加入拦截器Interceptor过程解析

这篇文章主要介绍了spring boot加入拦截器Interceptor过程解析,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

1.spring boot拦截器默认有

• HandlerInterceptorAdapter
• AbstractHandlerMapping
• UserRoleAuthorizationInterceptor
• LocaleChangeInterceptor
• ThemeChangeInterceptor

2.配置spring mvc的拦截器WebMvcConfigurerAdapter

public class WebAppConfig extends WebMvcConfigurerAdapter 

3.实现添加拦截器方法

public void addInterceptors(InterceptorRegistry registry){ 
} 

registry.addInterceptor可以通过此方法添加拦截器, 可以是spring提供的或者自己添加的

4.实例部分

public class WebAppConfig extends WebMvcConfigurerAdapter{  
  public static void main(String[] args) { 
    SpringApplication.run(WebAppConfig.class, args); 
  }  
   
  /** 
   * 配置拦截器 
   * @author lance 
   * @param registry 
   */ 
  public void addInterceptors(InterceptorRegistry registry) { 
    registry.addInterceptor(new UserSecurityInterceptor()).addPathPatterns("/user/**"); 
  } 
} 
 
UserSecurityInterceptor代码 
public class UserSecurityInterceptor implements HandlerInterceptor { 
 
  @Override 
  public boolean preHandle(HttpServletRequest request, 
      HttpServletResponse response, Object handler) throws Exception { 
     
    return true; 
  }  
  @Override 
  public void postHandle(HttpServletRequest request, 
      HttpServletResponse response, Object handler, 
      ModelAndView modelAndView) throws Exception { 
  } 
 
  @Override 
  public void afterCompletion(HttpServletRequest request, 
      HttpServletResponse response, Object handler, Exception ex) 
      throws Exception { 
  } 
} 

5.demo地址

https://github.com/leelance/spring-boot-all/tree/master/spring-boot-samples

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持小牛知识库。