LOGBACK:如何使用JSONLayout记录整个味精

问题描述

我们正在将日志从文本"更改为JSON.我使用以下代码实现JSON日志:

We are changing our logs from Text to JSON. I used below code to implement JSON logs :

    LayoutWrappingEncoder layoutEncoder = new LayoutWrappingEncoder();
    ch.qos.logback.contrib.json.classic.JsonLayout layout= new ch.qos.logback.contrib.json.classic.JsonLayout();

    ch.qos.logback.contrib.jackson.JacksonJsonFormatter jsonFormatter=new ch.qos.logback.contrib.jackson.JacksonJsonFormatter();
    jsonFormatter.setPrettyPrint(true);

    layout.setJsonFormatter(jsonFormatter);
    layout.setTimestampFormat("yyyy-MM-dd' 'HH:mm:ss.SSS");
    layoutEncoder.setLayout(layout);

但是我看到JSON日志没有完全打印出来.

But I see that JSON logs are not printed entirely.

{
    "timestamp" : "2019-08-22 10:12:15.790",
    "level" : "ERROR",
    "thread" : "qtp1346354118-22",
    "logger" :"com.SomeClass",
    "message" : "Exception  from : com.class.method() \n",
    "context" : "default",
    "exception" : "java.lang.NullPointerException: null\r\n"
}

现在，不使用完整的堆栈跟踪打印异常，就像它们如何在文本日志中获取日志一样.我还可以看到打印了新的换行符序列，这在文本日志中也不会发生.

Now, the exception are not printed with complete stack trace, like how they use to get logs in text logs. Also I could see new line escape sequence getting printed which also does not happen in text logs.

我尝试探索JSONLayout中的一些属性，但没有一个解决了我的问题.

I tried exploring some properties in JSONLayout but none of them solved my problem.

那么我还能在这里尝试

推荐答案

按如下所示定义CustomThrowableProxyConverter并将其设置到您的JsonLayout中.它可以解决问题.

Define a CustomThrowableProxyConverter as follows and set it into your JsonLayout. It does the trick.

CustomThrowableProxyConverter extends ThrowableHandlingConverter {

    public CustomThrowableProxyConverter() {
    }

    @Override
    public String convert(ILoggingEvent event) {
        StringBuilder sb = new StringBuilder();
        IThrowableProxy itp = event.getThrowableProxy();
        if (itp instanceof ThrowableProxy) {
            ThrowableProxy tp = (ThrowableProxy)itp;
            sb.append(tp.getClassName() + ": " + tp.getMessage());
            for (StackTraceElementProxy element : tp.getStackTraceElementProxyArray()) {
                sb.append("\t\n");
                sb.append(element.getSTEAsString());
            }
            return sb.toString();
        }

        return "";
    }
}

然后将其设置为jsonLayout实例.

Then set this into jsonLayout instance.

JsonLayout jsonLayout = new JsonLayout();
jsonLayout.setThrowableProxyConverter(new CustomThrowableProxyConverter());
jsonEncoder.setLayout(jsonLayout);

这篇关于LOGBACK:如何使用JSONLayout记录整个味精的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！