Details
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Bug
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Status: Open
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Major
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Resolution: Unresolved
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2.14.1
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None
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Darwin 18.7.0 Darwin Kernel Version 18.7.0
java version "11.0.11" 2021-04-20 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.11+9-LTS-194)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.11+9-LTS-194, mixed mode)
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Important
Description
The Document said that %xEx{short} which will only output the first line of the Throwable or %xEx{n} where the first n lines of the stacktrace will be printed. But it actually not work.
I followed the code in ThrowableProxyRenderer.java . It turns out that the method here not consider about these options at all.
static void formatExtendedStackTraceTo(final ThrowableProxy src, final StringBuilder sb, final List<String> ignorePackages, final TextRenderer textRenderer, final String suffix, final String lineSeparator) { textRenderer.render(src.getName(), sb, "Name"); textRenderer.render(": ", sb, "NameMessageSeparator"); textRenderer.render(src.getMessage(), sb, "Message"); renderSuffix(suffix, sb, textRenderer); textRenderer.render(lineSeparator, sb, "Text"); final StackTraceElement[] causedTrace = src.getThrowable() != null ? src.getThrowable().getStackTrace() : null; formatElements(sb, Strings.EMPTY, 0, causedTrace, src.getExtendedStackTrace(), ignorePackages, textRenderer, suffix, lineSeparator); formatSuppressed(sb, TAB, src.getSuppressedProxies(), ignorePackages, textRenderer, suffix, lineSeparator); formatCause(sb, Strings.EMPTY, src.getCauseProxy(), ignorePackages, textRenderer, suffix, lineSeparator); }
Here are my test case
import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; public class Test { private static final Logger logger = LogManager.getLogger(Test.class); private static void makeADeepErr(int i, int n) throws Exception { if (i < n) { makeADeepErr(i + 1, n); } throw new Exception("err"); } public static void main(String[] args) { try { makeADeepErr(0, 20); } catch (Exception e) { logger.error("err occur", e); } } }
And here are my log4j2.xml
<?xml version="1.0" encoding="UTF-8"?> <Configuration status="WARN"> <Appenders> <Console name="Console" target="SYSTEM_OUT" follow="true"> <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n %xEx{short}"/> </Console> </Appenders> <Loggers> <Root level="info"> <AppenderRef ref="Console"/> </Root> </Loggers> </Configuration>
And here are my output
01:03:26.877 [main] ERROR Test - err occur java.lang.Exception: err at Test.makeADeepErr(Test.java:11) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.makeADeepErr(Test.java:9) ~[classes/:?] at Test.main(Test.java:16) [classes/:?]
But the %xEx{none} or %xEx{0} can work fine.
