修复eclipse中使用mave update project后JRE都变成1.5的问题

在项目中的parent pom中添加如下代码即可

   <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
        <maven-compiler-plugin.version>3.3</maven-compiler-plugin.version>
    </properties>

   <build>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <configuration>
                        <source>${java.version}</source>
                        <target>${java.version}</target>
                        <testSource>${java.version}</testSource>
                        <testTarget>${java.version}</testTarget>
                    </configuration>
                    <version>${maven-compiler-plugin.version}</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>