How to put “new line” in Spring Expression Language?

问题

What would be the exact SpEL expression to go to the new line. Here is my configuration:

 <logging-channel-adapter id="log"
    channel="loggingChannel" level="INFO" 
    expression="'DealId: '+ payload.dealId \n + 'Name: '+ payload.name" />

回答1:

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" />

EDIT:

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

This works too...

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

回答2:

expression="'DealId: '+ payload.dealId'+  T(System).lineSeparator()+.......'"

来源：https://stackoverflow.com/questions/29668655/how-to-put-new-line-in-spring-expression-language