[英]Upgrading Mule from CE-3.5 to 3.7.0 breaks file encoding
Flow: 流:
<sftp:inbound-endpoint
connector-ref="sftpServer"
host="${sftp.host}"
port="${sftp.port}"
path="${sftp.path}"
user="${sftp.user}"
password="${sftp.password}"
responseTimeout="${standard.response.timeout.millis}"
sizeCheckWaitTime="${sftp.sizeCheckWaitTime.millis}"
pollingFrequency="${sftp.polling.frequency.millis}"
autoDelete="false"
encoding="UTF-16LE"
doc:name="SFTPEndpoint">
<file:filename-wildcard-filter pattern="${sftp.filename}" />
</sftp:inbound-endpoint>
<file:file-to-byte-array-transformer encoding="UTF-16LE" doc:name="Object to Byte Array" />
<byte-array-to-string-transformer encoding="UTF-8" doc:name="Byte Array to String"/>
With just the version number change, I started getting this exception: 仅更改版本号,我就开始遇到此异常:
Message : Cannot apply transformer FileToByteArray{this=74dda694, name='FileToByteArray', ignoreBadInput=false, returnClass=SimpleDataType{type=[B, mimeType='*/*', encoding='UTF-16LE'}, sourceTypes=[SimpleDataType{type=java.io.File, mimeType='*/*', encoding='null'}, SimpleDataType{type=java.io.FileInputStream, mimeType='*/*', encoding='null'}]} on source payload: class org.mule.transport.sftp.SftpInputStream (java.lang.IllegalArgumentException). Message payload is of type: SftpInputStream
Code : MULE_ERROR--2
So I had to change this: 所以我不得不改变这个:
<object-to-byte-array-transformer encoding="UTF-16LE" doc:name="Object to Byte Array" />
<byte-array-to-string-transformer encoding="UTF-8" doc:name="Object to Byte Array" />
Everything else is exactly the same setup, except now I'm getting this (with 3.7.0): 其他所有设置都完全相同,但是现在我有了(3.7.0):
T h i s i s a t e s t f i l e .
instead of this (with 3.5.0): 而不是这个(使用3.5.0):
This is a test file.
In the final version of the moved file. 在已移动文件的最终版本中。 These are not space characters, but invisible characters (I assume because UTF16 is a double byte character set) 这些不是空格字符,而是不可见的字符(我想是因为UTF16是双字节字符集)
Any thoughts? 有什么想法吗? Suggestions? 建议?
I ended up creating a custom groovy script to do the conversion, and put it right after the inbound-endpoint. 我最终创建了一个自定义的Groovy脚本来进行转换,并将其放在入站端点之后。
<sftp:inbound-endpoint
connector-ref="sftpServer"
host="${sftp.host}"
port="${sftp.port}"
path="${sftp.path}"
user="${sftp.user}"
password="${sftp.password}"
responseTimeout="${standard.response.timeout.millis}"
sizeCheckWaitTime="${sftp.sizeCheckWaitTime.millis}"
pollingFrequency="${sftp.polling.frequency.millis}"
autoDelete="false"
encoding="UTF-16LE"
doc:name="SFTPEndpoint">
<file:filename-wildcard-filter pattern="${sftp.filename}" />
</sftp:inbound-endpoint>
<scripting:transformer doc:name="Convert File Encoding">
<scripting:script engine="Groovy" file="encodingConverter.groovy" />
</scripting:transformer>
<!-- Do flow stuff here -->
The groovy script takes in an InputStream and outputs the converted File. groovy脚本接收InputStream并输出转换后的File。
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