如何在javax.servlet.Filter中注入ResourceInfo [英] How to inject ResourceInfo in javax.servlet.Filter
问题描述
我正在尝试根据服务方法注册时间指标,但无法注入ResourceInfo.
I am trying to register time metrics based on the service method but not able to inject ResourceInfo.
我想写一些通用的逻辑来根据服务注册时间.
I want to write some generic logic to register the time based on the service.
这是我的代码:
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.ws.rs.container.ResourceInfo;
@WebFilter("/*")
public class MetricsGeneraterFilter implements Filter {
@Context
private ResourceInfo resourceInfo;
@Override
public void destroy() {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
long startTime = System.currentTimeMillis();
chain.doFilter(request, response);
long elapsedTime = System.currentTimeMillis() - startTime;
System.out.println(resourceInfo.getResourceMethod().getName() + "--->" + elapsedTime);
}
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
}
如何在javax.servlet.Filter
中注入ResourceInfo
?
推荐答案
我已经使用ContainerRequestFilter
和ContainerResponseFilter
来解决此问题.
I've used ContainerRequestFilter
and ContainerResponseFilter
to solve for this problem.
ContainerRequestFilter:
ContainerRequestFilter:
@Provider
public class RequestContextLoggingFilter implements ContainerRequestFilter{
public static final String REQUEST_START_TIME = "REQUEST_START_TIME";
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
requestContext.setProperty(REQUEST_START_TIME, Instant.now());
}
}
ContainerResponseFilter:
ContainerResponseFilter:
@Provider
@Priority(Priorities.USER)
public class ResponseLogFilter implements ContainerResponseFilter{
private Logger logger = LoggerFactory.getLogger(ResponseLogFilter.class);
@Override
public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) throws IOException {
try {
Instant end = Instant.now();
Instant start = (Instant) requestContext.getProperty(RequestContextLoggingFilter.REQUEST_START_TIME);
logger.info("Done executing request with request_execution_time={} ms",
Duration.between(start, end).toMillis());
}catch (Exception e){
logger.warn("error logging response time", e);
}
}
}
您还可以使用泽西岛的监视和诊断"模块: https://jersey.github .io/documentation/latest/monitoring_tracing.html .
You can also use Jersey's Monitoring and Diagnostics module: https://jersey.github.io/documentation/latest/monitoring_tracing.html.
我还没有在生产应用程序中使用过它,因为它从> 2.1发行版开始处于beta中.
I haven't used it in production applications as it is in beta as of release >2.1
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