我的第一个Maven示例失败（使用m2eclipse）：缺少'mainClass'

Question

I am trying to get work this Maven by Example , using Eclipse + m2Eclipse plugin. However, I got this error

[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project simple-weather: The parameters 'mainClass' for goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java are missing or invalid

But I did specify mainClass in this way (screenshot below) with mainClass specified in the Profiles lines. Any idea why I still got wrong? Many thanks.

Answer 1

As the error message says, you are missing the parameter mainClass .

You have put the parameters in the Profiles part which is the wrong place.

Press the Add... button and add the parameter and value in the box like this:

It should look like this when you press Ok :