mven工程修改JDK版本

<profiles>
	<profile>
		<id>jdk-1.7</id>
		<activation>
			<activeByDefault>true</activeByDefault>
			<jdk>1.7</jdk>
		</activation>
		<properties>
			<maven.compiler.source>1.7</maven.compiler.source>
			<maven.compiler.target>1.7</maven.compiler.target>
			<maven.compiler.compilerVersion>1.7</maven.compiler.compilerVersion>
		</properties>
	</profile>
</profiles>

 或

<build>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.5.1</version>
				<configuration>
					<source>1.7</source>
					<target>1.7</target>
					<encoding>utf-8</encoding>
				</configuration>
			</plugin>
		</plugins>
	</build>