1.Open IDEA，choose "New-->Project"
2.Choose "Spring Initializr"
3. Choose java 1.7 version,then next
4. Choose "Web"
5. Fill out the project name,and choose the project location
6. 将"
.mvn
mvnw
mvnw.cmd"文件删掉
7. show the project
8. Application:
9. create controller
10. Run Application
11. start project
12. Now we input the address on the browser
