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BAEL-6681 Guide to Jersey Logging on Server #18881

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Merged
merged 3 commits into from
Oct 24, 2025
Merged

BAEL-6681 Guide to Jersey Logging on Server #18881

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ulisseslima Oct 13, 2025
690ea70
new line at EOF
ulisseslima Oct 13, 2025
6379ca9
Merge branch 'eugenp:master' into bael-6681-jersey-logging
ulisseslima Oct 22, 2025
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30 changes: 30 additions & 0 deletions ...s/jersey-2/src/main/java/com/baeldung/jersey/serverlogging/CustomServerLoggingFilter.java
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package com.baeldung.jersey.serverlogging;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jakarta.ws.rs.container.ContainerRequestContext;
import jakarta.ws.rs.container.ContainerRequestFilter;
import jakarta.ws.rs.container.ContainerResponseContext;
import jakarta.ws.rs.container.ContainerResponseFilter;
import jakarta.ws.rs.ext.Provider;

@Provider
public class CustomServerLoggingFilter implements ContainerRequestFilter, ContainerResponseFilter {

private static final Logger LOG = LoggerFactory.getLogger(CustomServerLoggingFilter.class);

@Override
public void filter(ContainerRequestContext requestContext) {
LOG.info("Incoming request: {} {}", requestContext.getMethod(), requestContext.getUriInfo()
.getRequestUri());
LOG.info("Request headers: {}", requestContext.getHeaders());
}

@Override
public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) {
LOG.info("Outgoing response: {} {} - Status {}", requestContext.getMethod(), requestContext.getUriInfo()
.getRequestUri(), responseContext.getStatus());
LOG.info("Response headers: {}", responseContext.getHeaders());
}
}
22 changes: 22 additions & 0 deletions ...ules/jersey-2/src/main/java/com/baeldung/jersey/serverlogging/JerseyServerLoggingApp.java
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package com.baeldung.jersey.serverlogging;

import java.util.logging.Level;
import java.util.logging.Logger;

import org.glassfish.jersey.logging.LoggingFeature;
import org.glassfish.jersey.server.ResourceConfig;

public class JerseyServerLoggingApp extends ResourceConfig {

public JerseyServerLoggingApp() {
register(LoggingResource.class);

register(new LoggingFeature(
Logger.getLogger(LoggingFeature.DEFAULT_LOGGER_NAME),
Level.INFO,
LoggingFeature.Verbosity.PAYLOAD_ANY,
8192));

register(CustomServerLoggingFilter.class);
}
}
13 changes: 13 additions & 0 deletions web-modules/jersey-2/src/main/java/com/baeldung/jersey/serverlogging/LoggingResource.java
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package com.baeldung.jersey.serverlogging;

import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;

@Path("/logging")
public class LoggingResource {

@GET
public String get() {
return "Hello";
}
}
59 changes: 59 additions & 0 deletions ...2/src/test/java/com/baeldung/jersey/serverlogging/JerseyServerLoggingIntegrationTest.java
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package com.baeldung.jersey.serverlogging;

import static org.junit.jupiter.api.Assertions.assertEquals;

import java.net.URI;

import org.glassfish.grizzly.http.server.HttpServer;
import org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpServerFactory;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.slf4j.LoggerFactory;

import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.core.read.ListAppender;
import jakarta.ws.rs.client.ClientBuilder;
import jakarta.ws.rs.core.Response;

class JerseyServerLoggingIntegrationTest {

private static HttpServer server;
private static final URI BASE_URI = URI.create("http://localhost:8080/api");

@BeforeAll
static void setup() {
server = GrizzlyHttpServerFactory.createHttpServer(BASE_URI, new JerseyServerLoggingApp());
}

@AfterAll
static void teardown() {
server.shutdownNow();
}

@Test
void whenRequestMadeWithLoggingFilter_thenCustomLogsAreWritten() {
Logger logger = (Logger) LoggerFactory.getLogger(CustomServerLoggingFilter.class);
ListAppender<ILoggingEvent> listAppender = new ListAppender<>();
listAppender.start();
logger.addAppender(listAppender);
listAppender.list.clear();

Response response = ClientBuilder.newClient()
.target(BASE_URI + "/logging")
.request()
.get();
assertEquals(200, response.getStatus());

boolean requestLogFound = listAppender.list.stream()
.anyMatch(event -> event.getFormattedMessage().contains("Incoming request: GET http://localhost:8080/api/logging"));
boolean responseLogFound = listAppender.list.stream()
.anyMatch(event -> event.getFormattedMessage().contains("Outgoing response: GET http://localhost:8080/api/logging - Status 200"));

assertEquals(true, requestLogFound, "Request log not found");
assertEquals(true, responseLogFound, "Response log not found");

logger.detachAppender(listAppender);
}
}