[I] seata-server 2.3.0 不能启动 [incubator-seata]

[via GitHub]

ASanny opened a new issue, #7306:
URL: https://github.com/apache/incubator-seata/issues/7306

   ## 问题
   
   Windows 下，数据库驱动改为 `com.mysql.cj.jdbc.Driver` ，并且也已经在 `%BASEDIR%/lib/jdbc` 
下添加 MySQL 驱动 `mysql-connector-java-8.0.30.jar`，但 seata-server 2.3.0 
启动失败，下面是错误堆栈简要信息：
   
   ```
   Caused by: org.apache.seata.common.exception.StoreException: The driver 
{com.mysql.cj.jdbc.Driver} cannot be found in the path 
D:\Seata-2.3.0\seata-server/lib/jdbc/. Please ensure that the appropriate 
database driver dependencies are included in the classpath.
           at 
org.apache.seata.core.store.db.AbstractDataSourceProvider.validate(AbstractDataSourceProvider.java:103)
           at 
org.apache.seata.core.store.db.AbstractDataSourceProvider.generate(AbstractDataSourceProvider.java:84)
   ```
   
   ## 解决方案
   
   经过研究源码和 `seata-server.bat` 脚本，得知源码中需要通过 `java.class.path` 系统变量得到 JDBC 驱动 jar 
包，并且 jar 包还要以 `mysql-connector-java-` 作为前缀。而脚本中通过 `java -jar` 方式启动，`-classpath` 
变量并没有生效。因此脚本中需要做出两点改动：
   
   - 去掉 `-classpath` 变量
   
   - 将 `-jar "%BASEDIR%"/target/seata-server.jar` 修改为：
   
     ```powershell
     -cp "%BASEDIR%"/target/seata-server.jar;"%BASEDIR%"/lib 
org.springframework.boot.loader.PropertiesLauncher
     ```
   
   ## 建议
   
   建议在工程 `incubator-seata-2.3.0` 的 `distribution/bin` 
下新增一个批处理脚本，避免许多新手遇到类似的错误无法解决。
   
   


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