更改IDEA默认使用JDK1.5编译项目

<properties>
	<java.version>1.8</java.version>
    <maven.compiler.source>${java.version}</maven.compiler.source>
    <maven.compiler.target>${java.version}</maven.compiler.target>
    <maven.compiler.compilerVersion>${java.version}</maven.compiler.compilerVersion>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>