dc095322a2
* INT-4448, INT-4449: Fix Gateway for no-arg method JIRA: https://jira.spring.io/browse/INT-4448 JIRA: https://jira.spring.io/browse/INT-4449 When we are not interested in the `payload` to send, we use a gateway method without any args, but in this case for send operation (or send-and-receive) we should specify a default `payloadExpression` The `MessagingGatewayRegistrar` fails with `NPE` if we don't have a any global headers and have `defaultPayloadExpression` Also in this case the `GatewayProxyFactoryBean` fails to send and fallbacks to receive with the meaning "no args, not payloadExpression" * Fix `MessagingGatewayRegistrar` to check `hasDefaultHeaders` before processing them * Fix `GatewayProxyFactoryBean` to consult `this.globalMethodMetadata` if there is no `payloadExpression` for the method specific metadata **Cherry-pick to 5.0.x and 4.3.x** * Remove `oracle-java8-installer` since it looks like the resource is not available anymore: ``` Location: http://download.oracle.com/otn-pub/java/jdk/8u161-b12/2f38c3b165be4555a1fa6e98c45e0808/jdk-8u161-linux-x64.tar.gz?AuthParam=1523990114_ee8c82cbe67bc87d192cb79d3b902d2f [following] --2018-04-17 18:33:14-- http://download.oracle.com/otn-pub/java/jdk/8u161-b12/2f38c3b165be4555a1fa6e98c45e0808/jdk-8u161-linux-x64.tar.gz?AuthParam=1523990114_ee8c82cbe67bc87d192cb79d3b902d2f Connecting to download.oracle.com (download.oracle.com)|23.53.120.105|:80... connected. HTTP request sent, awaiting response... 404 Not Found 2018-04-17 18:35:15 ERROR 404: Not Found. ```
Spring Integration 
Checking out and Building
To check out the project and build from source, do the following:
git clone git://github.com/spring-projects/spring-integration.git
cd spring-integration
./gradlew build
NOTE: While Spring Integration runs with Java SE 6 or higher, a Java 8 compiler is required to build the project.
If you encounter out of memory errors during the build, increase available heap and permgen for Gradle:
GRADLE_OPTS='-XX:MaxPermSize=1024m -Xmx1024m'
To build and install jars into your local Maven cache:
./gradlew install
To build api Javadoc (results will be in build/api):
./gradlew api
To build reference documentation (results will be in build/reference):
./gradlew reference
To build complete distribution including -dist, -docs, and -schema zip files (results will be in build/distributions)
./gradlew dist
Using Eclipse
To generate Eclipse metadata (.classpath and .project files), do the following:
./gradlew eclipse
Once complete, you may then import the projects into Eclipse as usual:
File -> Import -> Existing projects into workspace
Browse to the 'spring-integration' root directory. All projects should import free of errors.
Using IntelliJ IDEA
To generate IDEA metadata (.iml and .ipr files), do the following:
./gradlew idea
Resources
For more information, please visit the Spring Integration website at: http://projects.spring.io/spring-integration