SI SFTP Support

• Inbound Channel Adapter
• Outbound Channel Adatper
• Outbound Gateway

JSch

• Every time an adapter requests a session object from its SessionFactory, a new SFTP session is being started.
• Under the covers, the SFTP Session Factory relies on the JSch library to provide the SFTP capabilities.
• Spring Integration also supports the caching of SFTP sessions

Spring's property placeholder support

• PropertyPlaceHolderConfigurer
• To externalize property values from a bean definition in a separate file using the standard Java Properties format.
• <context:property-placeholder/>
• From Spring 2.5
• Supports a comma-separated list in the location attribute
• System.properties
• The PropertyPlaceholderConfigurer not only looks for properties file you specify. By default it also checks against the Java System Properties if it cannot find a property in the specified properties files.
• systemPropertiesMode
• never(0)
• fallback(1)
• override(2)
• Class name substitution

SFTP Inbound Channel Adapter

• Is a special listener that will connect to the server and listen for the remote directory events
• new file created
• will initiate a file transfer
• <int-sftp:inbound-channel-adapter/>
• By default that transferred file will carry the same name as the original file.
• local-filename-generator-expression
• SpEL
• The root object of the SpEL Evaluation Context is the original name of the remote file (String).
• File filtering
• filename-pattern
• filename-regex
• org.springframework.integration.file.filters.FileListsFilter
• SFTP Inbound Channel Adapter is a Polling Consumer.