jacoco + ant远程统计（tomcat/spring boot）服务的代码覆盖率

什么是Jacoco？

Jacoco(java code coverage)是一个开源的Java代码覆盖率工具，Jacoco可以嵌入到Ant 、Maven中，并提供了EclEmma Eclipse插件,也可以使用JavaAgent技术监控Java程序。很多第三方的工具提供了对Jacoco的集成，如sonar、Jenkins等。

软件安装

Ant

Jacoco

Tomcat配置

1、进入你需要统计代码覆盖率的tomcat  

cd /data/tomcat-gateway/bin

2、先关闭这个tomcat的服务

正常情况下可以直接执行  ./shutdown.sh

执行结束后 ps -ef|grep tomcat名 查看是否已经正常关闭，如果还没有关闭 kill -9 pid(来源于ps的结果)

3、修改 catalina.sh  的JAVA_OPTS/CATALINA_OPTS配置
output=file时，需要shudown服务才能dump出jacoco.exec文件
declare -x CATALINA_OPTS="-javaagent:/data/jacoco/lib/jacocoagent.jar=includes=*,output=file,destfile=/data/jacocoExec/jacoco_gateway.exec"

output=tcpserver时，可以利用ant执行dump操作，无需shutdown服务；
address可以填写hostname或ip，填ip时需要注意，查看/etc/hosts的hostname映射的ip是什么

declare -x CATALINA_OPTS="-javaagent:/data/jacoco/lib/jacocoagent.jar=includes=*,output=tcpserver,port=8457,address=172.16.1.31"

具体参数的意思请查看官方文档

4、启动服务 ./startup.sh

5、查看一下JAVA_OPTS是否有修改正确，在这有个坑，有一种情况是你把JAVA_OPTS写在前面，在后面被别人的覆盖了

ps -ef|grep tomcat名 看出来的结果有没有刚才你修改的值

6、output=tcpserver时，查看tcpserver有没有启来

netstat -tunlp|grep 8457

Spring Boot服务
启动命令如下：
java -javaagent:/data/jacoco/lib/jacocoagent.jar=includes=*,output=tcpserver,port=8457,address=172.16.1.31 -jar springboot-xxx.jar

ant任务配置
配置jacocoAnt.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<project name="JaCoCo" default="run" xmlns:jacoco="antlib:org.jacoco.ant">
        <!--Jacoco的安装路径-->
    <property name="jacocoAntPath" value="/opt/jacoco/lib/jacocoant.jar"/>
        <!--最终生成.exec文件的路径，Jacoco就是根据这个文件生成最终的报告的-->
    <property name="jacocoExecPath" value="/data/jacocoExec"/>
        <!--生成覆盖率报告的路径-->
    <property name="jacocoReportPath" value="/data/jacocoReport"/>
        <!--远程tomcat服务的ip地址  xxx.xx.xxx.163(172.16.1.31)-->
    <property name="server_ip_test163" value="172.16.1.31"/>
        <!--前面配置的远程tomcat服务打开的端口，要跟上面配置的一样-->
    <property name="server_port_cybs" value="8456"/>
    <property name="server_port_gateway" value="8457"/>

        <!--源代码路径-->
    <property name="gatewaySrcPath" value="/data/jacocoSrc/Gateway/GATEWAY/fi-website/src/main/java"/>

    <property name="cybsSrcPath" value="/data/jacocoSrc/cybs/src/main/java"/>    

        <!--.class文件路径-->
    <property name="gatewayClassesPath" value="/data/jacocoClasses/gateway/WEB-INF/classes"/>
    <property name="cybsClassesPath" value="/data/jacocoClasses/cybs/WEB-INF/classes"/>

        <!--让ant知道去哪儿找Jacoco-->
      <taskdef uri="antlib:org.jacoco.ant" resource="org/jacoco/ant/antlib.xml">
            <classpath path="${jacocoAntPath}"/>
      </taskdef>

           <target name="run">
            <echo message="start..."/>
            <echo message="dump..."/>
                <antcall target="dump"/>
            <echo message="merge..."/>
                <antcall target="merge"/>
            <echo message="report..."/>
                <antcall target="report"/>
            <echo message="end..."/>
           </target>

      <!--dump任务：
                        根据前面配置的ip地址，和端口号，访问目标tomcat服务，并生成.exec文件。-->
      <target name="dump">
        <jacoco:dump address="${server_ip_test163}" reset="true" destfile="${jacocoExecPath}/jacoco_gateway.exec" port="${server_port_gateway}" append="false"/>
        <jacoco:dump address="${server_ip_test163}" reset="true" destfile="${jacocoExecPath}/jacoco_cybs.exec" port="${server_port_cybs}" append="false"/>
      </target>

    <target name="merge">
        <jacoco:merge destfile="${jacocoExecPath}/merged.exec">
            <fileset dir="${jacocoExecPath}" includes="*.exec"/>
        </jacoco:merge>
    </target>

       <!--jacoco任务：
                        根据前面配置的源代码路径和.class文件路径，
                        根据dump后，生成的.exec文件，生成最终的html覆盖率报告。-->
       <target name="report">
        <jacoco:report>
               <executiondata>
                <file file="${jacocoExecPath}/merged.exec"/>
            </executiondata>

            <structure name="JaCoCo Report">
                <group name="gateway coverage">
                    <sourcefiles encoding="UTF-8">
                            <fileset dir="${gatewaySrcPath}"/>
                    </sourcefiles>
                    <classfiles>
                            <fileset dir="${gatewayClassesPath}"/>
                    </classfiles>
                </group>

                <group name="cybs coverage">
                    <sourcefiles encoding="UTF-8">
                        <fileset dir="${cybsSrcPath}"/>
                    </sourcefiles>
                    <classfiles>
                        <fileset dir="${cybsClassesPath}"/>
                    </classfiles>
                </group>

            </structure>

            <html destdir="${jacocoReportPath}" encoding="utf-8"/>
        <csv destfile="${jacocoReportPath}/report.csv"/>
        <xml destfile="${jacocoReportPath}/report.xml"/>
        </jacoco:report>
      </target>
</project>

执行ant任务
ant -f jacocoAnt.xml

<jacoco:dump address="${server_ip_test163}" reset="true" destfile="${jacocoExecPath}/jacoco_gateway.exec" port="${server_port_gateway}" append="false"/>

reset=true时，会在dump出exec文件后，清空覆盖率数据；
append=false时，dump出的exec文件会覆盖原有的exec文件；append=true时，dump出的exec文件追加至原有的exec文件；

结果展示：

+ cd /data/jacocoAntXml
+ ant -f jacocoAnt.xml
Buildfile: /data/jacocoAntXml/jacocoAnt.xml

run:
     [echo] start...
     [echo] dump...

dump:
[jacoco:dump] Connecting to /172.16.1.15:8457
[jacoco:dump] Dumping execution data to /data/jacocoExec/jacoco_gateway.exec
[jacoco:dump] Connecting to /172.16.1.15:8456
[jacoco:dump] Dumping execution data to /data/jacocoExec/jacoco_cybs.exec
[jacoco:dump] Connecting to /172.16.1.15:8470
[jacoco:dump] Dumping execution data to /data/jacocoExec/jacoco_creditCardBank.exec
[jacoco:dump] Connecting to /172.16.1.15:8459
[jacoco:dump] Dumping execution data to /data/jacocoExec/jacoco_mps.exec
[jacoco:dump] Connecting to /172.16.1.15:8451
[jacoco:dump] Dumping execution data to /data/jacocoExec/jacoco_accounting.exec
[jacoco:dump] Connecting to /172.16.1.15:8458
[jacoco:dump] Dumping execution data to /data/jacocoExec/jacoco_ordercenter.exec
[jacoco:dump] Connecting to /172.16.1.15:8453
[jacoco:dump] Dumping execution data to /data/jacocoExec/jacoco_notification.exec
[jacoco:dump] Connecting to /172.16.1.15:8454
[jacoco:dump] Dumping execution data to /data/jacocoExec/jacoco_poss.exec
     [echo] merge...

merge:
[jacoco:merge] Loading execution data file /data/jacocoExec/jacoco_accounting.exec
[jacoco:merge] Loading execution data file /data/jacocoExec/jacoco_creditCardBank.exec
[jacoco:merge] Loading execution data file /data/jacocoExec/jacoco_cybs.exec
[jacoco:merge] Loading execution data file /data/jacocoExec/jacoco_gateway.exec
[jacoco:merge] Loading execution data file /data/jacocoExec/jacoco_mps.exec
[jacoco:merge] Loading execution data file /data/jacocoExec/jacoco_notification.exec
[jacoco:merge] Loading execution data file /data/jacocoExec/jacoco_ordercenter.exec
[jacoco:merge] Loading execution data file /data/jacocoExec/jacoco_poss.exec
[jacoco:merge] Loading execution data file /data/jacocoExec/merged.exec
[jacoco:merge] Writing merged execution data to /data/jacocoExec/merged.exec
     [echo] report...

report:
[jacoco:report] Loading execution data file /data/jacocoExec/merged.exec
[jacoco:report] Writing bundle 'webgate coverage' with 701 classes
[jacoco:report] Writing bundle 'gateway coverage' with 198 classes

     [echo] end...

BUILD SUCCESSFUL