红帽全球峰会245.3. 变量
| 变量 | 类型 | 描述 |
|---|---|---|
| 这 | Exchange | Exchange 是 root 对象 |
| 交换 | Exchange | Exchange 对象 |
| 例外 | Throwable | Exchange 异常（如果有） |
| exchangeId | 字符串 | Exchange id |
| Fulting | 消息 | Fault 消息（若有） |
| Request （请求） | 消息 | exchange.in 消息 |
| response | 消息 | exchange.out 消息（如果有） |
| 属性 | Map | Exchange 属性 |
| property(name) | 对象 | 给定名称的属性 |
| property(name, type) | 类型 | 给定名称的属性作为给定类型 |
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