引入插件

<!-- surefire plugin with spock and junit -->
<plugin>
    <groupId>org.codehaus.gmavenplus</groupId>
    <artifactId>gmavenplus-plugin</artifactId>
    <version>1.9.0</version>
    <executions>
        <execution>
            <goals>
                <goal>compileTests</goal>
            </goals>
        </execution>
    </executions>
</plugin>
<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>3.0.0-M7</version>
    <configuration>
        <!-- 配置单测失败几次后停止执行 -->
        <skipAfterFailureCount>0</skipAfterFailureCount>
        <!-- 不允许跳过单测 -->
        <skipTests>false</skipTests>
    </configuration>
</plugin>

引入 JaCoCo Plugin 的配置

<!-- JaCoCo plugin -->
<plugin>
    <groupId>org.jacoco</groupId>
    <artifactId>jacoco-maven-plugin</artifactId>
    <version>0.8.7</version>
    <configuration>
        <includes>
            <include>tech/**/*</include>
        </includes>
    </configuration>
    <executions>
        <execution>
            <id>pre-test</id>
            <goals>
                <goal>prepare-agent</goal>
            </goals>
        </execution>
	       <execution>
            <id>post-test</id>
            <phase>test</phase>
            <goals>
                <goal>report</goal>
            </goals>
    	</execution>
	</executions>
</plugin>

生成报告

做好上述报告后，直接执行 mvn test 就可以生成单测覆盖率报告了。如果没有什么异常的话，程序会生成单测覆盖率报告文件，地址为： target/site/jacoco/index.html

Surefire Plugin 官网文档
JaCoCo Plugin 官网文档