在Eclipse中为Maven项目设置默认的Java合规性级别 [英] Set default java compliance level for Maven projects in Eclipse

问题描述

Maven的默认合规级别是1.5，每次我在Eclipse中更新maven项目时，它都会将合规级别从1.6恢复到1.5，这对我来说真的很烦人。

The default compliance level for Maven is 1.5 and every time that I update a maven project in Eclipse it sets back the compliance level from 1.6 to 1.5 which is really annoying for me.

我知道我可以在POM文件中将目标设置为1.6，但问题是我不能在父POM中设置它并期望孩子继承它。所以我必须为每个Maven模块做这件事。我怎么能在我的Maven项目或整个eclipse中设置一次生命周期而不修改每个Maven模块！？

I know that I can set the target to 1.6 in the POM file but the problem is that I cannot set this in the parent POM and expect the children to inherit it. So I have to do it for every single Maven module. How can I set it in my Maven project or in the whole eclipse once for a "lifetime" without modifying every single Maven module!?

推荐答案

我知道我可以在pom文件中将目标设置为1.6，但问题是我不能在父pom中设置它并期望孩子继承它。

I know that I can set the target to 1.6 in pom file but the problem is that I cannot set this in the parent pom and expect the children to inherit it.

设置< source> 和< ;目标> 父pom中的版本确实有效。

Setting the <source> and <target> version in the parent pom does work.

例如，在我的父pom中，我有：

For example, in my parent pom, I have:

<pluginManagement>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>2.3.2</version>
      <configuration>
        <source>1.6</source>
        <target>1.6</target>
        <encoding>UTF-8</encoding>
      </configuration>
    </plugin>
  </plugins>
</pluginManagement>

如果您遇到问题，可能需要检查：

If you are having problems, you might want to check that:

• 子项指定父项的正确版本;


• 父pom指定源和目标值;


• 您已经运行 mvn install 在父母身上;和


• mvn help：有效-pom 在子项目中显示预期的源/目标值。

• the child specifies the correct version of the parent;
• the parent pom specifies both source and target values;
• you have run mvn install on the parent; and
• mvn help:effective-pom on the child project shows the expected source/target values.

修改poms后，您可能需要选择两个项目并使用 Maven-> Update Project 。

After modifying the poms, you may need to select both projects and use Maven->Update Project.

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