Rest 如何在javax.servlet.Filter中注入ResourceInfo
我试图根据服务方法注册时间度量,但无法注入ResourceInfo 我想编写一些通用逻辑来根据服务注册时间 这是我的密码:Rest 如何在javax.servlet.Filter中注入ResourceInfo,rest,jersey,jax-rs,cxf,jersey-2.0,Rest,Jersey,Jax Rs,Cxf,Jersey 2.0,我试图根据服务方法注册时间度量,但无法注入ResourceInfo 我想编写一些通用逻辑来根据服务注册时间 这是我的密码: import java.io.IOException; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.Se
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
?尝试使用JAX-RS过滤器。它们的操作与Servlet过滤器一样,但更好,因为它们在JAX-RS的范围内,可以完成Servlet过滤器无法完成的许多事情
为此,只需使该类实现ContainerResponseFilter
和ContainerRequestContext
,并将其添加到JAX-RS应用程序中(即添加@Provider
注释或将其添加到web.xml
)。然后实现这两种方法。您可以将startTime
存储在RequestContext
对象的参数中
我将通过一个指向我自己的过滤器的链接来编辑此内容,该过滤器在我有机会时会执行此操作。我使用了
ContainerRequestFilter
和ContainerResponseFilter
来解决此问题
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:
@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Jersey的监视和诊断模块:
我还没有在生产应用程序中使用它,因为它是从2.1版开始的beta版