代码中需要更改的内容
    image.png
    Dockerfile
    1.在文件中引入jacocoagent.jar，引入后需检查是否引入成功

    1. ADD ./jacocoagent.jar  /jacocoagent.jar

    2.打开jacocoagent监控端口，不能与其他jacocoagent端口重复，此端口也是docker容器启动的必填项

    1. EXPOSE 9926

    3.加入jacocoagent启动参数，端口号与第2条填入的参数相同，address由于是docker环境所以默认填0.0.0.0

    1. -javaagent:jacocoagent.jar=includes=*,output=tcpserver,port=9926,address=0.0.0.0

    image.png
    pom.xml
    引入jacoco
    image.png

    1. <!--代码覆盖率依赖-->
    2.         <dependency>
    3.             <groupId>org.jacoco</groupId>
    4.             <artifactId>org.jacoco.agent</artifactId>
    5.             <version>0.8.7</version>
    6.             <classifier>runtime</classifier>
    7.         </dependency>

    设置jacoco插件细节
    image.png

    1. <plugin>
    2.                 <groupId>org.jacoco</groupId>
    3.                 <artifactId>jacoco-maven-plugin</artifactId>
    4.                 <version>0.8.7</version>
    5.                 <executions>
    6.                     <execution>
    7.                         <id>default-instrument</id>
    8.                         <goals>
    9.                             <goal>instrument</goal>
    10.                         </goals>
    11.                     </execution>
    12.                     <execution>
    13.                         <id>default-restore-instrumented-classes</id>
    14.                         <goals>
    15.                             <goal>restore-instrumented-classes</goal>
    16.                         </goals>
    17.                     </execution>
    18.                     <execution>
    19.                         <id>report</id>
    20.                         <phase>prepare-package</phase>
    21.                         <goals>
    22.                             <goal>report</goal>
    23.                         </goals>
    24.                     </execution>
    25.                     <execution>
    26.                         <id>check</id>
    27.                         <goals>
    28.                             <goal>check</goal>
    29.                         </goals>
    30.                     </execution>
    31.                     <execution>
    32.                         <id>prepare-agent</id>
    33.                         <goals>
    34.                             <goal>prepare-agent</goal>
    35.                         </goals>
    36.                     </execution>
    37.                 </executions>
    38.                 <configuration>
    39.                     <!-- rules里面指定覆盖规则 -->
    40.                     <rules>
    41.                         <rule implementation="org.jacoco.maven.RuleConfiguration">
    42.                             <element>BUNDLE</element>
    43.                             <limits>
    44.                                 <!-- 指定方法覆盖到80% -->
    45.                                 <limit implementation="org.jacoco.report.check.Limit">
    46.                                     <counter>METHOD</counter>
    47.                                     <value>COVEREDRATIO</value>
    48.                                     <minimum>0.80</minimum>
    49.                                 </limit>
    50.                                 <!-- 指定指令覆盖到80% -->
    51.                                 <limit implementation="org.jacoco.report.check.Limit">
    52.                                     <counter>INSTRUCTION</counter>
    53.                                     <value>COVEREDRATIO</value>
    54.                                     <minimum>0.80</minimum>
    55.                                 </limit>
    56.                                 <!-- 指定行覆盖到80% -->
    57.                                 <limit implementation="org.jacoco.report.check.Limit">
    58.                                     <counter>LINE</counter>
    59.                                     <value>COVEREDRATIO</value>
    60.                                     <minimum>0.80</minimum>
    61.                                 </limit>
    62.                                 <!-- 指定类覆盖到100%，不能遗失任何类 -->
    63.                                 <limit implementation="org.jacoco.report.check.Limit">
    64.                                     <counter>CLASS</counter>
    65.                                     <value>MISSEDCOUNT</value>
    66.                                     <maximum>0</maximum>
    67.                                 </limit>
    69.                             </limits>
    70.                         </rule>
    71.                     </rules>
    72.                 </configuration>
    73.             </plugin>
    75.             <plugin>
    76.                 <groupId>org.jacoco</groupId>
    77.                 <artifactId>jacoco-maven-plugin</artifactId>
    78.                 <version>0.8.7</version>
    79.                 <configuration>
    80.                     <destFile>jacoco.exec</destFile>
    81.                     <dataFile>jacoco.exec</dataFile>
    82.                 </configuration>
    83.                 <executions>
    84.                     <execution>
    85.                         <id>jacoco-initialize</id>
    86.                         <goals>
    87.                             <goal>prepare-agent</goal>
    88.                         </goals>
    89.                     </execution>
    90.                     <execution>
    91.                         <id>jacoco-site</id>
    92.                         <phase>test</phase>
    93.                         <goals>
    94.                             <goal>report</goal>
    95.                         </goals>
    96.                     </execution>
    97.                 </executions>
    98.             </plugin>

    到此代码部分的已经设置完成，接下来是docker的设置
    在原有的容器端口外，加上上面设置的jacocoagent端口，设置完成后，点击ok
    image.png
    到此，覆盖率文件已经生成，接下来是获取覆盖率文件exec
    首先在服务端机器上配置ant
    然后创建build.xml，用于通过ant获取覆盖率文件

    1. <?xml version="1.0" encoding="UTF-8"?>
    2. <project name="Jacoco" xmlns:jacoco="antlib:org.jacoco.ant" default="jacoco">   
    3.     <property name="jacocoantPath" value="/usr/local/jacoco_test/jacoco-0.8.7/lib/jacocoant.jar"/>
    4.     <property name="integrationJacocoexecPath" value="./jacoco-integration.exec"/>
    6.     <taskdef uri="antlib:org.jacoco.ant" resource="org/jacoco/ant/antlib.xml">
    7.       <classpath path="${jacocoantPath}" />
    8.     </taskdef>
    10.     <?如果需要获取多个容器的覆盖率信息，则dump里添加多个的jacocoagent监控端口就可?>
    11.     <target name="dump">
    12.         <jacoco:dump address="0.0.0.0" port="9926" reset="false" destfile="${integrationJacocoexecPath}" append="true"/>
    13.         <jacoco:dump address="0.0.0.0" port="9928" reset="false" destfile="${integrationJacocoexecPath}" append="true"/>
    14.     </target>
    15. </project>

    最后，使用idea分析覆盖率文件即可！