Jacoco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。

Maven工程

创建Maven工程

打开Eclipse，File->New->Project->Maven Project，新建一个Maven工程~

点击“Next”按钮，然后填写groupId和artifactId信息后点击"Finish"按钮即可~

groupId -->  com.xxx.tutorial
artifactId --> jacoco-demo

配置Jacoco

添加maven-complier-plugin

           <plugin>
				<groupId>org.apache.maven.pluginsgroupId>
				<artifactId>maven-compiler-pluginartifactId>
				<version>3.6.1version>
				<configuration>
					<skipMain>trueskipMain>
					<skip>trueskip>
					<source>1.7source>
					<target>1.7target>
				configuration>
			plugin>

添加jacoco-maven-plugin

          <plugin>
				<groupId>org.jacocogroupId>
				<artifactId>jacoco-maven-pluginartifactId>
				<version>${jacoco.version}version>
				<executions>
					<execution>
						<id>prepare-agentid>
						<goals>
							<goal>prepare-agentgoal>
						goals>
					execution>
					<execution>
						<id>reportid>
						<phase>prepare-packagephase>
						<goals>
							<goal>reportgoal>
						goals>
					execution>
					<execution>
						<id>post-unit-testid>
						<phase>testphase>
						<goals>
							<goal>reportgoal>
						goals>
						<configuration>
							<dataFile>target/jacoco.execdataFile>
							<outputDirectory>target/jacoco-utoutputDirectory>
						configuration>
					execution>
				executions>
				<configuration>
					<systemPropertyVariables>
						<&
                        
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