Log4j2提供了exception和exceptionRootCause事件模板解析器。但是，这些解析器只能访问顶级和底层异常。
所以当我有了这个

Throwable a = new RuntimeException("a");
Throwable b = new RuntimeException("b", a);
Throwable c = new RuntimeException("c", b);
log.error("Exception", c);

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我只能看到a和c，但我无法看到两者之间的任何内容。Java本身就支持c.printStackTrace();。

java.lang.RuntimeException: c
Caused by: java.lang.RuntimeException: b
Caused by: java.lang.RuntimeException: a

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如何在log4j中获取此信息？
我的配置：

{
  "exception": {
    "class_name": {
      "$resolver": "exception",
      "field": "className"
    },
    "message": {
      "$resolver": "exception",
      "field": "message"
    },
    "cause": {
      "class_name": {
        "$resolver": "exceptionRootCause",
        "field": "className"
      },
      "message": {
        "$resolver": "exceptionRootCause",
        "field": "message"
      },
      "stack_trace": {
        "$resolver": "exceptionRootCause",
        "field": "stackTrace",
        "stackTrace": {
          "elementTemplate": {
            "class_name": {
              "$resolver": "stackTraceElement",
              "field": "className"
            },
            "method": {
              "$resolver": "stackTraceElement",
              "field": "methodName"
            },
            "file": {
              "$resolver": "stackTraceElement",
              "field": "fileName"
            },
            "line": {
              "$resolver": "stackTraceElement",
              "field": "lineNumber"
            }
          }
        }
      }
    }
  },
  "line": {
    "$resolver": "source",
    "field": "lineNumber"
  },
  "class_name": {
    "$resolver": "source",
    "field": "className"
  },
  "@version": 1,
  "source_host": "${hostName}",
  "message": {
    "$resolver": "message"
  },
  "thread_name": {
    "$resolver": "thread",
    "field": "name"
  },
  "@timestamp": {
    "$resolver": "timestamp"
  },
  "level": {
    "$resolver": "level",
    "field": "name"
  },
  "file": {
    "$resolver": "source",
    "field": "fileName"
  },
  "method": {
    "$resolver": "source",
    "field": "methodName"
  },
  "logger_name": {
    "$resolver": "logger",
    "field": "name"
  }
}

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