We first need to make sure you have installed and configured jdk8, maven, git environment
First, download the project:
Get the source code from github. URL: https://github.com/spring-projects/spring-boot
We want to build a 2.1.3.RELEASE version, so look for the appropriate version of the release or visit after clicking Tags https://github.com/spring-projects/spring-boot/releases/tag/v2.1.3.RELEASE
Find the sourcecode click to download the source archive
After downloading unpack, switch to the directory, execute the command: mvn clean install -DskipTests -Pfast 
The command to skip the test packages, and perform under id <profile> tags under pom file as an option of fast
After patiently wait for the download to complete modules, the project into idea, create a new module, add a reference to the need to lock the file can pom
