Question

当我使用输出 cat 运行journalctl时，它会按预期打印整个异常堆栈跟踪。运行带有输出 json 的journalctl，它会跳过第一行：

[root@doc-test-node01 splunk]# journalctl -f -o cat | grep undertow

13:35:31,858 ERROR [io.undertow.request] [bruker=01026300394 korrId=826gg6c45 kallId=826y7otah] (default task-62) Undertow request failed HttpServerExchange{ POST /startlan-esoknad/soknader/}: java.lang.NullPointerException
        at io.undertow.servlet.spec.ServletInputStreamImpl.readIntoBuffer(ServletInputStreamImpl.java:171)
        at io.undertow.servlet.spec.ServletInputStreamImpl.close(ServletInputStreamImpl.java:245)
        at io.undertow.servlet.spec.HttpServletRequestImpl.closeAndDrainRequest(HttpServletRequestImpl.java:602)
        at io.undertow.servlet.core.ServletBlockingHttpExchange.close(ServletBlockingHttpExchange.java:87)
        at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1444)
        at io.undertow.server.Connectors.executeRootHandler(Connectors.java:213)
        at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759)

当我运行journalctl -f -o json-pretty | grep undertow时，journalctl会跳过第一行：

[root@doc-test-node01 splunk]# journalctl -f -o json-pretty | grep undertow

        "MESSAGE" : "\u0009at io.undertow.servlet.spec.ServletInputStreamImpl.readIntoBuffer(ServletInputStreamImpl.java:171)",
        "MESSAGE" : "\u0009at io.undertow.servlet.spec.ServletInputStreamImpl.close(ServletInputStreamImpl.java:245)",
        "MESSAGE" : "\u0009at io.undertow.servlet.spec.HttpServletRequestImpl.closeAndDrainRequest(HttpServletRequestImpl.java:602)",
        "MESSAGE" : "\u0009at io.undertow.servlet.core.ServletBlockingHttpExchange.close(ServletBlockingHttpExchange.java:87)",
        "MESSAGE" : "\u0009at io.undertow.server.HttpServerExchange.endExchange(HttpServerExchange.java:1444)",
        "MESSAGE" : "\u0009at io.undertow.server.Connectors.executeRootHandler(Connectors.java:213)",
        "MESSAGE" : "\u0009at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759)",

它还会跳过输出json和json-sse的第一行。

Answer 1

我发现的是我不应该贪图。 journalctl无法创建第一行的json并打印数字，这意味着该消息存在：

"MESSAGE" : [ 27, 91, 48, ...

为什么journalctl的json输出不会打印整个异常堆栈跟踪？

1 个答案: