原因 junit 4.11以上版本不再包含hamcrest jar包了，需要单独添加hamcrest-core-1.3.jar
1、在pom.xml中添加
<!-- https://mvnrepository.com/artifact/org.hamcrest/hamcrest-core --> <dependency> <groupId>org.hamcrest</groupId> <artifactId>hamcrest-core</artifactId> <version>1.3</version> <scope>test</scope> </dependency>
2、手动导包
https://mvnrepository.com/artifact/org.hamcrest/hamcrest-core/1.3
