update TableToJsonConfig for postgresql

Author: litongjava

docs/zh/15_table-to-json/03.md

@@ -146,8 +146,6 @@ public class TableToJsonConfig {
 **配置方式 2:不添加类到 AOP 容器**
 
 ```
-package com.litongjava.apps.asrgpt.config;
-
 import javax.sql.DataSource;
 
 import com.jfinal.template.Engine;
@@ -166,8 +164,7 @@ import com.zaxxer.hikari.HikariDataSource;
 @AConfiguration
 public class TableToJsonConfig {
 
-  @AInitialization
-  public void dataSource() {
+  public DataSource dataSource() {
     String jdbcUrl = EnvironmentUtils.get("jdbc.url");
     String jdbcUser = EnvironmentUtils.get("jdbc.user");
 
@@ -187,6 +184,7 @@ public class TableToJsonConfig {
     DsContainer.setDataSource(hikariDataSource);
     // add destroy
     TioBootServer.me().addDestroyMethod(hikariDataSource::close);
+    return hikariDataSource;
 
   }
 
@@ -198,7 +196,7 @@ public class TableToJsonConfig {
   @AInitialization
   public void activeRecordPlugin() throws Exception {
     // get dataSource
-    DataSource dataSource = DsContainer.ds;
+    DataSource dataSource = dataSource();
     // get env key
     String property = EnvironmentUtils.get(ConfigKeys.APP_ENV);