feat: mysql连接环境变量配置信息

.env.example

@@ -1,3 +1,9 @@
+DB_HOST=49.233.127.177 		                              # 数据库连接ip地址
+DB_PORT=14148 										                      # 数据库连接端口
+DB_USERNAME=root                                        # 数据库连接用户名
+DB_PASSWORD=JkKDWwRnFaedGWGBCpHU                        # 数据库连接密码
+DB_DATABASE=plain 								                      # 数据库连接的数据库名
+
 LLM_KEY_LOCAL=123                                       # 本地模型key
 LLM_KEY_HUOSHAN=dc7979dc-af60-4700-XXXX-XXXXXXXXXXXX 	  # 火山引擎模型服务平台key
 LLM_KEY_BAILIAN=sk-248f811295914adcad837XXXXXXXXXXX 	  # 阿里云百炼模型服务平台key

app/config/env.py

@@ -3,6 +3,12 @@ from pydantic import Field
 
 
 class EnvSettings(BaseSettings):
+  db_host: str = Field(..., env="DB_HOST")
+  db_port: str = Field(..., env="DB_PORT")
+  db_username: str = Field(..., env="DB_USERNAME")
+  db_password: str = Field(..., env="DB_PASSWORD")
+  db_database: str = Field(..., env="DB_DATABASE")
+
   llm_key_local: str = Field(..., env="LLM_KEY_LOCAL")
   llm_key_huoshan: str = Field(..., env="LLM_KEY_HUOSHAN")
   llm_key_bailian: str = Field(..., env="LLM_KEY_BAILIAN")