你与别人花费一样的时间，因为别人用心，而你吊儿郎当，所以到了最后检验成果的时候，别人成功，而你除了赔了时间之后，一无所得。——飞行员舒克

文档：

JaCoCo - Maven Plug-in

首先配置：

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<plugin>
    <groupId>org.jacoco</groupId>
    <artifactId>jacoco-maven-plugin</artifactId>
    <version>0.8.12</version>
    <executions>
        <execution>
            <goals>
                <goal>prepare-agent</goal>
            </goals>
        </execution>
        <execution>
            <id>report</id>
            <phase>test</phase>
            <goals>
                <goal>report</goal>
            </goals>
        </execution>
    </executions>
</plugin>

然后执行mvn test

在target/site下面就会生成测试报告

比如我这里

/Users/achao/IdeaProjects/stream-query/stream-plugin/stream-plugin-mybatis-plus/target/site/checkstyle.html

Element Missed Instructions Cov. Missed Branches Cov. Missed Cxty Missed Lines Missed Methods Missed Classes
org.dromara.streamquery.stream.plugin.mybatisplus 427/1996 82% 58/84 59% 86 297 97 539 35 226 0 10
org.dromara.streamquery.stream.plugin.mybatisplus.engine.methods 62/443 87% 8/12 60% 9 22 13 100 2 12 0 3
org.dromara.streamquery.stream.plugin.mybatisplus.engine.interceptor 27/27 58% 3/3 50% 5 7 7 16 2 4 0 1
org.dromara.streamquery.stream.plugin.mybatisplus.engine.configuration 447/447 97% 6/32 84% 7 59 5 140 1 40 0 9
org.dromara.streamquery.stream.plugin.mybatisplus.engine.utils 0/0 68% 3/3 25% 3 5 1 7 1 3 0 1
org.dromara.streamquery.stream.plugin.mybatisplus.engine.enumration 50/50 94% 0/0 n/a 1 5 1 11 1 5 0 1
org.dromara.streamquery.stream.plugin.mybatisplus.engine.handler 54/54 100% 4/4 100% 0 4 0 15 0 2 0 1
org.dromara.streamquery.stream.plugin.mybatisplus.engine.mapper 38/38 100% 0/0 50% 1 5 0 9 0 4 0 2
org.dromara.streamquery.stream.plugin.mybatisplus.engine.constant 0/0 100% 0/0 n/a 0 1 0 1 0 1 0 1
Total 530 of 3,617 85% 79 of 216 63% 112 405 124 838 42 297 0 29