maven项目使用jacoco插件检测代码覆盖率详细配置

使用maven构建项目（java项目或者web项目都可以）

jacoco插件的配置参考官方网址：http://www.eclemma.org/jacoco/trunk/doc/maven.html

（1）配置jacoco的依赖jar包

<dependency>
            <groupId>org.jacoco</groupId>
            <artifactId>jacoco-maven-plugin</artifactId>
            <version>0.7.8</version>
</dependency>

（2）配置jacoco的插件，以及相关的goal

 <plugin>
        <groupId>org.jacoco</groupId>
        <artifactId>jacoco-maven-plugin</artifactId>
        <version>0.7.8</version>
　　　　<!--这里的execution ,每一个执行的goal,对应的id必须是唯一的-->
        <executions>
            <execution>
                <id>prepare-agent</id>
                 <goals>
                     <goal>prepare-agent</goal>
                 </goals>
            </execution>
　　　　　　　　<!--这个check:对代码进行检测，控制项目构建成功还是失败-->
             <execution>
                 <id>check</id>
                  <goals>
                      <goal>check</goal>
                   </goals>
            </execution>
　　　　　　　　<!--这个report:对代码进行检测，然后生成index.html在 target/site/index.html中可以查看检测的详细结果-->
            <execution>
                 <id>report</id>
                 <phase>prepare-package</phase>
                 <goals>
                     <goal>report</goal>
                 </goals>
            </execution>
         </executions>
 </plugin>
            

（3）配置代码检查的约束 rules

<!-- Configuration 里面写配置信息 -->
 <configuration>
     <!-- rules里面指定覆盖规则 -->
     <rules>
       <rule implementation="org.jacoco.maven.RuleConfiguration">
         <element>BUNDLE</element>
         <limits>
        　　<!-- 指定方法覆盖到80% -->
           <limit implementation="org.jacoco.report.check.Limit">
              <counter>METHOD</counter>
              <value>COVEREDRATIO</value>
              <minimum>0.80</minimum>
           </limit>
           <!-- 指定指令覆盖到80% -->
           <limit implementation="org.jacoco.report.check.Limit">
              <counter>INSTRUCTION</counter>
              <value>COVEREDRATIO</value>
              <minimum>0.80</minimum>
           </limit>
           <!-- 指定行覆盖到80% -->
           <limit implementation="org.jacoco.report.check.Limit">
             <counter>LINE</counter>
             <value>COVEREDRATIO</value>
             <minimum>0.80</minimum>
           </limit>
           <!-- 指定类覆盖到100%，不能遗失任何类 -->
           <limit implementation="org.jacoco.report.check.Limit">
             <counter>CLASS</counter>
             <value>MISSEDCOUNT</value>
             <maximum>0</maximum>
           </limit>
         </limits>
      </rule>
   </rules>
</configuration>

（4）完整的pom.xml的配置如下

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

    <groupId>cn.demo</groupId>
    <artifactId>answers</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>answers</name>
    <url>http://maven.apache.org</url>
  
    <build>
        <finalName>answers</finalName>
        <plugins>
            <plugin>
                <inherited>true</inherited>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>${compiler.source}</source>
                    <target>${compiler.target}</target>
                    <encoding>${project.build.sourceEncoding}</encoding>
                </configuration>
            </plugin>

　　　　　　　　<!--检查代码覆盖率的插件配置-->
             <plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>0.7.8</version>
                <executions>
                    <execution>
                        <id>prepare-agent</id>
                        <goals>
                            <goal>prepare-agent</goal>
                        </goals>
                    </execution>
                    <execution>
                          <id>check</id>
                        <goals>
                            <goal>check</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>report</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>report</goal>
                        </goals>
                    </execution>
                </executions>
                
                <!-- Configuration 里面写配置信息 -->
                <configuration>
                <!-- rules里面指定覆盖规则 -->
                <rules>
                  <rule implementation="org.jacoco.maven.RuleConfiguration">
                    <element>BUNDLE</element>
                    <limits>
                         <!-- 指定方法覆盖到80% -->
                      <limit implementation="org.jacoco.report.check.Limit">
                        <counter>METHOD</counter>
                        <value>COVEREDRATIO</value>
                        <minimum>0.80</minimum>
                      </limit>
                        <!-- 指定指令覆盖到80% -->
                      <limit implementation="org.jacoco.report.check.Limit">
                        <counter>INSTRUCTION</counter>
                        <value>COVEREDRATIO</value>
                        <minimum>0.80</minimum>
                      </limit>
                       <!-- 指定行覆盖到80% -->
                      <limit implementation="org.jacoco.report.check.Limit">
                        <counter>LINE</counter>
                        <value>COVEREDRATIO</value>
                        <minimum>0.80</minimum>
                      </limit>
                      <!-- 指定类覆盖到100%，不能遗失任何类 -->
                      <limit implementation="org.jacoco.report.check.Limit">
                        <counter>CLASS</counter>
                        <value>MISSEDCOUNT</value>
                            <maximum>0</maximum>
                      </limit>
                      
                    </limits>
                  </rule>
                </rules>
                </configuration>
            </plugin>
            
        </plugins>
    </build>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <compiler.source>1.7</compiler.source>
        <compiler.target>1.7</compiler.target>
        <junit.version>4.12</junit.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.jacoco</groupId>
            <artifactId>jacoco-maven-plugin</artifactId>
            <version>0.7.8</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>        
</project>