您可以将其用作解决方法:

You can use this as a work-around:

<int:logging-channel-adapter id="loggingChannel" logger-name="tapInbound"
    expression="'DealId: '+ payload.dealId + T(System).getProperty('line.separator') + 'Name: '+ payload.name"
    level="INFO" />

澄清一下，SpEL 支持转义字符，问题是 java DOM 解析器不理解转义.

Just to clarify, SpEL supports escape characters, the problem is the java DOM parser doesn't understand escapes.

这也有效...

expression="'DealId: '+ payload.dealId + '
Name: '+ payload.name"