如何替换SpEL表达式中的字符串？ [英] how to replace string in SpEL expression?

问题描述

首先，感谢关注
i在我的spring集成项目中定义的ftp适配器，并使用 mv 命令移动ftp服务器中的文件，目录结构是：

ftp-root

----------- Directory1\

----------- ------ in\

---------------------------file.in

----------------- out \

我想移动文件文件.in 在 ftp-root \Directory1\in\ 目录中移动 ftp-root \Directory1\\ \\ out \ 与 .out.rpt 扩展名 ftp-root \Directory1\out\a.out

i使用 int-ftp：出站网关适配器运行 mv
$ p $ < int-ftp：outbound-gateway id =gatewayMv
session-factory =ftpSessionFactory
expression =payload.remoteDirectory +'/'+ payload.filename
request-channel =mvChannel
command =mv
rename-expression =payload.remoteDirectory +'/'+ payload.filename
reply-channel =aggregateResultsChannel/> ;


如何使用SpEL表达式替换 in 在重命名表达式选项中使用 out ？ code> rename-expression =payload.remoteDirectory +'/'+ payload.filename.replaceFirst（'in'，'out'）


在大多数情况下，SpEL的工作方式与普通Java相似。由于 filename 是字符串，您可以申请任何字符串操作。

firstly,thanks for attention
i defined ftp adapter in my spring integration project and used mv command to move files in ftp server,directory structure is:
ftp-root
-----------Directory1\
-----------------in\
---------------------------file.in
-----------------out\

i want to move file file.in in ftp-root\Directory1\in\ directory to move ftp-root\Directory1\out\ with .out.rpt extension ftp-root\Directory1\out\a.out
i used int-ftp:outbound-gateway adapter to run mv command on ftp server,my code is:

<int-ftp:outbound-gateway id="gatewayMv"
                          session-factory="ftpSessionFactory"
                          expression="payload.remoteDirectory + '/' + payload.filename"
                          request-channel="mvChannel"
                          command="mv"
                          rename-expression="payload.remoteDirectory + '/' + payload.filename "
                          reply-channel="aggregateResultsChannel"/>

how to use SpEL expression to replace in with out in rename-expression option?

解决方案

rename-expression="payload.remoteDirectory + '/' + payload.filename.replaceFirst('in', 'out')"

In most cases SpEL work like the regular Java. Since filename is a String you can apply for it any string operation.

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