maven运行出错

错误信息

[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java (d
efault-cli) on project demo: The parameters 'mainClass' for goal org.codehaus.mo
jo:exec-maven-plugin:1.6.0:java are missing or invalid -> [Help 1]

maven.png

解决办法

在pom.xml中添加如下配置

  <build>
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
            <version>1.2.1</version>
            <executions>
                <execution>
                    <goals>
                        <goal>java</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <mainClass>com.amu.App</mainClass>
            </configuration>
        </plugin>
    </plugins>
  </build>

完整配置文件如下

<project xmlns="http://maven.apache.org/POM/4.0.0" 
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.amu</groupId>
  <artifactId>demo</artifactId>
  <packaging>jar</packaging>
  <version>1.0</version>
  <name>demo</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.jsoup</groupId>
      <artifactId>jsoup</artifactId>
      <version>1.11.3</version>
    </dependency>

  </dependencies>
  <build>
    <plugins>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
            <version>1.2.1</version>
            <executions>
                <execution>
                    <goals>
                        <goal>java</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <mainClass>com.amu.App</mainClass>
            </configuration>
        </plugin>
    </plugins>
  </build>  
</project>