liunaijie commented on code in PR #8984:
URL: https://github.com/apache/seatunnel/pull/8984#discussion_r2000101963
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docs/zh/concept/config.md:
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@@ -322,7 +322,85 @@ sink {
- 值不能包含空格`' '`。例如, `-i jobName='this is a job name'`将被替换为`job.name = "this"`。
你可以使用环境变量传递带有空格的值。
- 如果要使用动态参数,可以使用以下格式: `-i date=$(date +"%Y%m%d")`。
-
不能使用指定系统保留字符，它将不会被`-i`替换，如:`${database_name}`、`${schema_name}`、`${table_name}`、`${schema_full_name}`、`${table_full_name}`、`${primary_key}`、`${unique_key}`、`${field_names}`。具体可参考[Sink参数占位符](sink-options-placeholders.md)
+
+## 配置引用
+
+在配置文件中,我们可以定义一些通用的配置信息，在Job配置中直接引用，从而复用相同的配置。
+常见应用于连接信息复用，以及开发和生产环境的变量配置文件独立，极大提高配置维护性。
+
+具体样例：
+ref.conf
+```hocon
+# 定义 MySQL 连接配置
+mysql_prod {
+ url = "jdbc:mysql://192.168.1.19:3306/test"
+ driver = "com.mysql.cj.jdbc.Driver"
+ connection_check_timeout_sec = 100
+ user = "root"
+ password = "111111"
+ fetch_size = 10000
+}
+
+# 定义 Kafka 连接配置
+kafka_test {
+ bootstrap.servers = "kafka-test:9092"
+ topic = "test_topic"
+}
+```
+
+mysql_to_console_by_ref.conf
+```hocon
+env {
+ parallelism = 1
+ job.mode = "BATCH"
+ __st_config_ref_path__ =
"D:/MyWorld/05Projects/java/contribute/seatunnel/seatunnel-examples/seatunnel-engine-examples/target/classes/examples/ref.conf"
+}
+
+source {
+ Jdbc {
+ __st_config_ref_key__ = "mysql_prod"
+ query="select * from department"
Review Comment:
> got it
We can just describe it in the document to let use know this thing. Replace
behavior is good to me.
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