2016-01-20 23:18:15.907 INFO 5271 — [ main]
o.s.boot.SpringApplication : Starting SpringApplication
v1.3.1.RELEASE on …

2016-01-20 23:18:15.911 INFO 5271 — [ main]
o.s.boot.SpringApplication : No active profile set,
falling back to default profiles: default

2016-01-20 23:18:15.918 ERROR 5271 — [ main]
o.s.boot.SpringApplication : Application startup Failed
java.lang.IllegalArgumentException: Sources must not be empty at
org.springframework.util.Assert.notEmpty(Assert.java:276)
~[spring-core-4.2.4.RELEASE.jar:4.2.4.RELEASE] at
org.springframework.boot.SpringApplication.doRun(SpringApplication.java:352)
[spring-boot-1.3.1.RELEASE.jar:1.3.1.RELEASE] at
org.springframework.boot.SpringApplication.run(SpringApplication.java:305)
[spring-boot-1.3.1.RELEASE.jar:1.3.1.RELEASE] at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1124)
[spring-boot-1.3.1.RELEASE.jar:1.3.1.RELEASE] at
org.springframework.boot.SpringApplication.main(SpringApplication.java:1140)
[spring-boot-1.3.1.RELEASE.jar:1.3.1.RELEASE]

什么是“来源不能为空”错误？

我正在为本教程项目使用Eclipse-Maven项目,我已经更新了项目.我也已经清理并重建了但是我仍然遇到了这个错误.