-source 1.7不支持lambda表达式 [英] lambda expressions are not supported in -source 1.7

问题描述

我在Eclipse中打开了maven项目.但是当我进行清洁和安装时，会遇到上述错误.

I have maven project opened in Eclipse. But when I do clean and install, I get above error.

我将构建路径更改为使用SE 1.8，并且将编译器也配置为使用1.8.您可以在以下屏幕截图中看到这一点.

I changed my build path to use SE 1.8 and my compiler is also configured to use 1.8. You can see that in following screen shots.

我也在项目浏览器中看到了一些小红叉.您可以在下图中看到它.

I am seeing little red crosses in project explorer too. You can see that in following picture.

我不确定将Maven配置为在Eclipse中使用SE 1.8时，为什么Maven使用SE 1.7.

I am not sure why maven is using SE 1.7 when I have configured it to use 1.8 in Eclipse.

推荐答案

您需要将maven配置为在编译时使用1.8兼容性:

You need to configure maven to use 1.8 compatibility when compiling:

    <build>
      <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <encoding>utf8</encoding>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
     </plugins>
   </build>

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