## 请求日志的三种实现方式_日志的请求方式-优快云博客

本文详细介绍了三种实现请求日志的方法：使用自定义过滤器(filter)进行时间记录、通过Spring Bean注册过滤器以及利用AOP(面向切面编程)增强功能。自定义过滤器能够精确控制请求的开始和结束时间，而AOP则提供了更灵活的切入点和通知机制。

请求日志的三种实现方式

1.filter

1.自定义filter @configuration
public class TimeFilter implements Filter {

@Override
public void destroy() {
	System.err.println("time filter destory...");
}

@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
		throws IOException, ServletException {
	System.err.println("=======time filter start======");
	long startTime = new Date().getTime();
	chain.doFilter(request, response); //执行其他过滤器链
	System.err.println("time filter 耗时："+(new Date().getTime()-startTime));
	System.err.println("=======time filter end=======");
}

@Override
public void init(FilterConfig arg0) throws ServletException {
	System.err.println("time filter init...");
}

2.引用三方bean
@Bean
public FilterRegistrationBean timeFilter(){
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();

	TimeFilter timeFilter = new TimeFilter();
	filterRegistrationBean.setFilter(timeFilter);
	//指定要过滤的url
	List<String> urls = new ArrayList<>();
	urls.add("/*");
	filterRegistrationBean.setUrlPatterns(urls);
	return filterRegistrationBean;
}