upgrade version

README.md

@@ -4,20 +4,24 @@
 
 ## Getting started
 
-To make it easy for you to get started with GitLab, here's a list of recommended next steps.
-
-Already a pro? Just edit this README.md and make it your own. Want to make it easy? [Use the template at the bottom](#editing-this-readme)!
-
 ## 
 
 
 ```
 
+# 1. 查看哪些依赖可以升级
 mvn versions:display-dependency-updates
 
+# 2. 自动更新 properties 中的版本（如 spring.version）
 mvn versions:update-properties
 
-mvn versions:set -DnewVersion=1.0.0-RELEASE
+# 3. 更新项目自身版本号（比如发布正式版）
+mvn versions:set -DnewVersion=1.2.0.RELEASE
+
+# 4. 检查 pom.xml 是否正确
+
+# 5. 确认无误后，提交更改（删除备份）
+mvn versions:commit
 ```
 
 ```