Java 应用程序无法在 Amazon Linux EC2 中连接 MySQL

Question

我的java应用程序可以在运行我的java应用程序时自动生成表并连接数据库，因为我已经将mysql的用户名和密码配置到java应用程序代码中。但是对于使用packer在EC2中安装mysql来说，它会有一个临时密码，我的java应用程序无法连接mysql？在这种情况下，我该怎么办，我应该使用docker来避免这个问题吗？我将非常感谢任何帮助。

由于临时密码问题，当我在 EC2 中运行 java 应用程序时，我总是出错

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

Caused by: org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction

提前设置MySQL root密码

Setup.sh代码：

echo '[mysqld]' | sudo tee -a /etc/my.cnf
echo 'skip-networking=0' | sudo tee -a /etc/my.cnf
echo 'bind-address=0.0.0.0' | sudo tee -a /etc/my.cnf
echo 'max_connections=100' | sudo tee -a /etc/my.cnf
echo 'wait_timeout=1200' | sudo tee -a /etc/my.cnf
echo 'interactive_timeout=1200' | sudo tee -a /etc/my.cnf
echo 'lower_case_table_names=1' | sudo tee -a /etc/my.cnf
echo '[client]' | sudo tee -a /etc/my.cnf
echo 'host=localhost' | sudo tee -a /etc/my.cnf
echo 'port=3306' | sudo tee -a /etc/my.cnf
echo 'user=root' | sudo tee -a /etc/my.cnf
echo 'password=Amazaon#2023' | sudo tee -a /etc/my.cnf

# Update the system
sudo yum update -y

sleep 10
# Install MySQL
sudo rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022 
sudo yum install -y https://dev.mysql.com/get/mysql80-community-release-el7-5.noarch.rpm
sudo yum install -y mysql-community-server
sudo yum install -y mysql-connector-java
  

# Start the MySQL service and enable it to start on boot
sudo systemctl start mysqld
sudo systemctl enable mysqld


# Install the MySQL Connector/J driver for Java
sudo yum install -y mysql-connector-java


# Restart the MySQL service
#sudo systemctl restart mysqld