Using Java 7 with official Google Appengine Maven plugin
问题 I'm having trouble using the official Maven Plugin and Java 7 with Google Appengine. Configuration My project configuration pom.xml is quite simple: In the properties section I configure: <gae.version>1.7.4</gae.version> And later on I use the plugin: <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> <plugin> <groupId>com.google