Spring Boot 添加拦截器

Spring Boot实现自定义的拦截器步骤：

1、创建我们自己的拦截器类并实现 HandlerInterceptor 接口。

public class MyInterceptor 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 {
    }

}

 

2、创建一个Java类继承WebMvcConfigurerAdapter，并重写 addInterceptors 方法。

3、实例化我们自定义的拦截器，然后将对像手动添加到拦截器链中（在addInterceptors方法中添加）。

@Configuration
public class WebInterceptorConfigurer extends WebMvcConfigurerAdapter {
    // addPathPatterns 用于添加拦截规则
    // excludePathPatterns 用户排除拦截
	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		registry.addInterceptor(new MyInterceptor()).addPathPatterns("/**");
		super.addInterceptors(registry);
	}
}

注意：只有经过DispatcherServlet 的请求，才会走拦截器链，我们自定义的Servlet 请求是不会被拦截的。

http://blog.csdn.net/catoop/article/details/50501696