泽西LoggingFilter与log4j
我有一个用泽西开发的rest服务，我有一个ContainerRequestFilters用于打印请求，如下所示：
com.sun.jersey.spi.container.ContainerRequestFilters com.sun.jersey.api.container.filter.LoggingFilter 我使用log4j在post方法中记录了。 但LoggingFilter在日志中打印的log4j不同。 LogginFilter有没有办法使用log4j的配置？
我在log4j.xml文件中尝试过这个：
但它不起作用:(
泽西岛确实使用了jdk记录器。 您可以使用SLF4JBridgeHandler将JDK日志消息传输到日志记录基础结构。 （参见Claus Nielsen的Blogpost ）
SLF4JBridgeHandler.removeHandlersForRootLogger(); SLF4JBridgeHandler.install();
因此，为了在Spring应用程序中获取它，我使用了@PostConstruct注释。
@Component public class JerseyLoggingBridge { @PostConstruct private void init() { SLF4JBridgeHandler.removeHandlersForRootLogger(); SLF4JBridgeHandler.install(); } }
处理此问题的一种方法是为java logger编写一个filter，您只需使用log4j记录器或您喜欢的日志记录消息，并通过始终返回false来接收Java日志记录。
Logger javaLogger = Logger.getLogger(YourClass.class.getName()); javaLogger.setFilter(new Filter() { @Override public boolean isLoggable(LogRecord record) { log4jLogger.info(new Date(record.getMillis()) + " " + record.getLevel() + " " + record.getMessage()); return false; } }); this.jerseyClient.register(new LoggingFilter(javaLogger, true));
这将允许您使用任何您想要的记录器。
履行
import javax.annotation.Priority; import javax.ws.rs.container.PreMatching; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; @PreMatching @Priority(Integer.MIN_VALUE) public final class Log4j2JerseyLoggingFilter extends AbstractJerseyLoggingFilter { private final Logger logger; public Log4j2JerseyLoggingFilter() { this(LogManager.getLogger(Log4j2JerseyLoggingFilter.class)); } public Log4j2JerseyLoggingFilter(final Logger logger) { this(logger, false); } public Log4j2JerseyLoggingFilter(final Logger logger, boolean printEntity) { super(printEntity); this.logger = logger; } public Log4j2JerseyLoggingFilter(final Logger logger, int maxEntitySize) { super(maxEntitySize); this.logger = logger; } @Override protected void log(StringBuilder b) { if (logger != null) { logger.info(b.toString()); } } }
摘要记录filter类
这直接来自Jersey Loggingfilter类，但使日志方法变得抽象。
import java.io.BufferedInputStream; import java.io.ByteArrayOutputStream; import java.io.FilterOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.URI; import java.nio.charset.Charset; import java.util.Comparator; import java.util.List; import java.util.Map; import java.util.Set; import java.util.TreeSet; import java.util.concurrent.atomic.AtomicLong; import javax.annotation.Priority; import javax.ws.rs.WebApplicationException; import javax.ws.rs.client.ClientRequestContext; import javax.ws.rs.client.ClientRequestFilter; import javax.ws.rs.client.ClientResponseContext; import javax.ws.rs.client.ClientResponseFilter; import javax.ws.rs.container.ContainerRequestContext; import javax.ws.rs.container.ContainerRequestFilter; import javax.ws.rs.container.ContainerResponseContext; import javax.ws.rs.container.ContainerResponseFilter; import javax.ws.rs.container.PreMatching; import javax.ws.rs.core.MultivaluedMap; import javax.ws.rs.ext.WriterInterceptor; import javax.ws.rs.ext.WriterInterceptorContext; import org.glassfish.jersey.filter.LoggingFilter; import org.glassfish.jersey.message.MessageUtils; /** * Universal logging filter. * * Can be used on client or server side. Has the highest priority. * * @author Pavel Bucek (pavel.bucek at oracle.com) * @author Martin Matula */ @PreMatching @Priority(Integer.MIN_VALUE) public abstract class AbstractJerseyLoggingFilter implements ContainerRequestFilter, ClientRequestFilter, ContainerResponseFilter, ClientResponseFilter, WriterInterceptor { private static final String NOTIFICATION_PREFIX = "* "; private static final String REQUEST_PREFIX = "> "; private static final String RESPONSE_PREFIX = "< "; private static final String ENTITY_LOGGER_PROPERTY = LoggingFilter.class.getName() + ".entityLogger"; private static final String LOGGING_ID_PROPERTY = LoggingFilter.class.getName() + ".id"; private static final Comparator>> COMPARATOR = new Comparator>>() { @Override public int compare(final Map.Entry> o1, final Map.Entry> o2) { return o1.getKey().compareToIgnoreCase(o2.getKey()); } }; private static final int DEFAULT_MAX_ENTITY_SIZE = 8 * 1024; private final AtomicLong _id = new AtomicLong(0); private final boolean printEntity; private final int maxEntitySize; /** * Create a logging filter logging the request and response to a default JDK * logger, named as the fully qualified class name of this class. Entity * logging is turned off by default. */ public AbstractJerseyLoggingFilter() { this(false); } /** * Create a logging filter with custom logger and custom settings of entity * logging. * * @param logger * the logger to log requests and responses. * @param printEntity * if true, entity will be logged as well up to the default * maxEntitySize, which is 8KB */ public AbstractJerseyLoggingFilter(final boolean printEntity) { this.printEntity = printEntity; this.maxEntitySize = DEFAULT_MAX_ENTITY_SIZE; } /** * Creates a logging filter with custom logger and entity logging turned on, * but potentially limiting the size of entity to be buffered and logged. * * @param logger * the logger to log requests and responses. * @param maxEntitySize * maximum number of entity bytes to be logged (and buffered) - * if the entity is larger, logging filter will print (and buffer * in memory) only the specified number of bytes and print * "...more..." string at the end. Negative values are * interpreted as zero. */ public AbstractJerseyLoggingFilter(final int maxEntitySize) { this.printEntity = true; this.maxEntitySize = Math.max(0, maxEntitySize); } protected abstract void log(final StringBuilder b); private StringBuilder prefixId(final StringBuilder b, final long id) { b.append(Long.toString(id)).append(" "); return b; } private void printRequestLine(final StringBuilder b, final String note, final long id, final String method, final URI uri) { prefixId(b, id).append(NOTIFICATION_PREFIX).append(note).append(" on thread ") .append(Thread.currentThread().getName()).append("\n"); prefixId(b, id).append(REQUEST_PREFIX).append(method).append(" ").append(uri.toASCIIString()).append("\n"); } private void printResponseLine(final StringBuilder b, final String note, final long id, final int status) { prefixId(b, id).append(NOTIFICATION_PREFIX).append(note).append(" on thread ") .append(Thread.currentThread().getName()).append("\n"); prefixId(b, id).append(RESPONSE_PREFIX).append(Integer.toString(status)).append("\n"); } private void printPrefixedHeaders(final StringBuilder b, final long id, final String prefix, final MultivaluedMap headers) { for (final Map.Entry> headerEntry : getSortedHeaders(headers.entrySet())) { final List val = headerEntry.getValue(); final String header = headerEntry.getKey(); if (val.size() == 1) { prefixId(b, id).append(prefix).append(header).append(": ").append(val.get(0)).append("\n"); } else { final StringBuilder sb = new StringBuilder(); boolean add = false; for (final Object s : val) { if (add) { sb.append(','); } add = true; sb.append(s); } prefixId(b, id).append(prefix).append(header).append(": ").append(sb.toString()).append("\n"); } } } private Set>> getSortedHeaders(final Set>> headers) { final TreeSet>> sortedHeaders = new TreeSet>>( COMPARATOR); sortedHeaders.addAll(headers); return sortedHeaders; } private InputStream logInboundEntity(final StringBuilder b, InputStream stream, final Charset charset) throws IOException { if (!stream.markSupported()) { stream = new BufferedInputStream(stream); } stream.mark(maxEntitySize + 1); final byte[] entity = new byte[maxEntitySize + 1]; final int entitySize = stream.read(entity); b.append(new String(entity, 0, Math.min(entitySize, maxEntitySize), charset)); if (entitySize > maxEntitySize) { b.append("...more..."); } b.append('\n'); stream.reset(); return stream; } @Override public void filter(final ClientRequestContext context) throws IOException { final long id = _id.incrementAndGet(); context.setProperty(LOGGING_ID_PROPERTY, id); final StringBuilder b = new StringBuilder(); printRequestLine(b, "Sending client request", id, context.getMethod(), context.getUri()); printPrefixedHeaders(b, id, REQUEST_PREFIX, context.getStringHeaders()); if (printEntity && context.hasEntity()) { final OutputStream stream = new LoggingStream(b, context.getEntityStream()); context.setEntityStream(stream); context.setProperty(ENTITY_LOGGER_PROPERTY, stream); // not calling log(b) here - it will be called by the interceptor } else { log(b); } } @Override public void filter(final ClientRequestContext requestContext, final ClientResponseContext responseContext) throws IOException { final Object requestId = requestContext.getProperty(LOGGING_ID_PROPERTY); final long id = requestId != null ? (Long) requestId : _id.incrementAndGet(); final StringBuilder b = new StringBuilder(); printResponseLine(b, "Client response received", id, responseContext.getStatus()); printPrefixedHeaders(b, id, RESPONSE_PREFIX, responseContext.getHeaders()); if (printEntity && responseContext.hasEntity()) { responseContext.setEntityStream(logInboundEntity(b, responseContext.getEntityStream(), MessageUtils.getCharset(responseContext.getMediaType()))); } log(b); } @Override public void filter(final ContainerRequestContext context) throws IOException { final long id = _id.incrementAndGet(); context.setProperty(LOGGING_ID_PROPERTY, id); final StringBuilder b = new StringBuilder(); printRequestLine(b, "Server has received a request", id, context.getMethod(), context.getUriInfo().getRequestUri()); printPrefixedHeaders(b, id, REQUEST_PREFIX, context.getHeaders()); if (printEntity && context.hasEntity()) { context.setEntityStream( logInboundEntity(b, context.getEntityStream(), MessageUtils.getCharset(context.getMediaType()))); } log(b); } @Override public void filter(final ContainerRequestContext requestContext, final ContainerResponseContext responseContext) throws IOException { final Object requestId = requestContext.getProperty(LOGGING_ID_PROPERTY); final long id = requestId != null ? (Long) requestId : _id.incrementAndGet(); final StringBuilder b = new StringBuilder(); printResponseLine(b, "Server responded with a response", id, responseContext.getStatus()); printPrefixedHeaders(b, id, RESPONSE_PREFIX, responseContext.getStringHeaders()); if (printEntity && responseContext.hasEntity()) { final OutputStream stream = new LoggingStream(b, responseContext.getEntityStream()); responseContext.setEntityStream(stream); requestContext.setProperty(ENTITY_LOGGER_PROPERTY, stream); // not calling log(b) here - it will be called by the interceptor } else { log(b); } } @Override public void aroundWriteTo(final WriterInterceptorContext writerInterceptorContext) throws IOException, WebApplicationException { final LoggingStream stream = (LoggingStream) writerInterceptorContext.getProperty(ENTITY_LOGGER_PROPERTY); writerInterceptorContext.proceed(); if (stream != null) { log(stream.getStringBuilder(MessageUtils.getCharset(writerInterceptorContext.getMediaType()))); } } private class LoggingStream extends FilterOutputStream { private final StringBuilder b; private final ByteArrayOutputStream baos = new ByteArrayOutputStream(); LoggingStream(final StringBuilder b, final OutputStream inner) { super(inner); this.b = b; } StringBuilder getStringBuilder(final Charset charset) { // write entity to the builder final byte[] entity = baos.toByteArray(); b.append(new String(entity, 0, Math.min(entity.length, maxEntitySize), charset)); if (entity.length > maxEntitySize) { b.append("...more..."); } b.append('\n'); return b; } @Override public void write(final int i) throws IOException { if (baos.size() <= maxEntitySize) { baos.write(i); } out.write(i); } } }
以与我们相同的方式注册它。
public class RestApplication extends ResourceConfig { /** * Registers this package as a list of resources that should be scanned for * other resources. */ public RestApplication() { packages(RestApplication.class.getPackage().getName()); register(Log4j2JerseyLoggingFilter.class); } }
从log4j2开始，您可以简单地将所有JDK的日志记录移交给log4j（除非您明确要求JDK日志记录来处理其余部分日志记录），使用log4j-jul库和-Djava.util.logging.manager=org.apache.logging.log4j.jul.LogManager VM参数。
资料来源 ： https ： //logging.apache.org/log4j/2.0/log4j-jul/