1. 无法加载主类

error：

原因： target目录不存在或为空。
解决方案: 重新打maven包；选中项目右击 — Build Module ‘xxxx’ — 生成target文件即可；重新运行项目，不会报错了；

2. Some problems were encountered while building the effective model for com.ectit:rmt-service:jar:

【error】：
Some problems were encountered while building the effective model for com.ectit:rmt-service:jar:1.0-SNAPSHOT
‘build.plugins.plugin.version’ for org.springframework.boot:spring-boot-maven-plugin is missing. @ line 140, column 21
It is highly recommended to fix these problems because they threaten the stability of your build.
For this reason, future Maven versions might no longer support building such malformed projects.

3.打包报错

错误信息: Java: 找不到符号

解决方案：

1. 检查jdk配置是否正确
   
2. 考虑项目编码设置不对，在如下图的位置选择utf-8的编码格式
   3. 将父级的包install一下再打包

4. Failed to execute goal org.apache.maven.plugins

【error】
Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project rmt:
Deployment failed: repository element was not specified in the POM inside distributionManagement element or in -
DaltDeploymentRepository=id::layout::url parameter -> [Help 1]

解决方案： 先将父级项目 install 一下。

来源地址：https://blog.csdn.net/qq_43622777/article/details/128332997