事件内容转换 示例三:转换时变量为JSON形式 转换前的事件 转换类型 转换后的事件 plaintext { "id": "f36b49b668914b59b11cbf689xxxx712", "source": "ctyun:kafka", "type": "ctyun:kafka:Topic:Message", "specversion": "1.0", "datacontentype": "application/json;charsetutf8", "subject": "ctyun:kafka:75dcxx1eb5:topic:source1", "time": "20241203T09:48:00.696Z", "data": { "key": "test2", "value": "test1" } } 模板 变量: plaintext { "data": "$.data" } 模板: plaintext { "value": ${data} } plaintext { "value": { "key": "test2", "value": "test1" } } 示例四:转换时变量进行JSON转义 若希望转换的字符串保持JSON字符串格式,不破坏原有JSON的格式,可使用jsonEscape函数,如下所示: 转换前的事件 转换类型 转换后的事件 plaintext { "id": "f36b49b668914b59b11cbf689xxxx712", "source": "ctyun:kafka", "type": "ctyun:kafka:Topic:Message", "specversion": "1.0", "datacontentype": "application/json;charsetutf8", "subject": "ctyun:kafka:75dcxx1eb5:topic:source1", "time": "20241203T09:48:00.696Z", "data": { "key": "test2", "value": "test1" } } 模板 变量: plaintext { "data": "$.data" } 模板: plaintext { "value": "${jsonEscape(data)}" } plaintext { "value": "{"key": "test2","value": "test1"}" } 空 当转换类型为空时,事件总线EventBridge将事件路由到事件目标时,对应的属性为空。如希望分布式消息服务Kafka事件目标的Key、分布式消息服务RocketMQ事件目标的Tags为空时,可以将对应属性设置为空。