新增配置示例代码

https://github.com/APIJSON/apijson-column#3override-getkey-in-your-sqlexecutor-extends-abstractsqlexecutor

Author: TommyLemon

README.md

@@ -130,6 +130,35 @@ https://github.com/APIJSON/APIJSON-Demo/blob/master/APIJSON-Java-Server/APIJSONB
 
 #### See document in [ColumnUtil](/src/main/java/apijson/column/ColumnUtil.java) and [DemoSQLConfig](https://github.com/APIJSON/APIJSON-Demo/blob/master/APIJSON-Java-Server/APIJSONBoot/src/main/java/apijson/demo/DemoSQLConfig.java), [DemoSQLExecutor](https://github.com/APIJSON/APIJSON-Demo/blob/master/APIJSON-Java-Server/APIJSONBoot/src/main/java/apijson/demo/DemoSQLExecutor.java) in [APIJSONBoot](https://github.com/APIJSON/APIJSON-Demo/blob/master/APIJSON-Java-Server/APIJSONBoot)
 
+```java
+static {
+// 反选字段配置
+Map<String, List<String>> tableColumnMap = new HashMap<>();
+tableColumnMap.put("User", Arrays.asList(StringUtil.split("id,sex,name,tag,head,contactIdList,pictureList,date")));
+// 需要对应方法传参也是这样拼接才行，例如 ColumnUtil.compatInputColumn(column, getSQLDatabase() + "-" + getSQLSchema() + "-" + getTable(), getMethod());
+tableColumnMap.put("MYSQL-sys-Privacy", Arrays.asList(StringUtil.split("id,certified,phone,balance,_password,_payPassword")));
+ColumnUtil.VERSIONED_TABLE_COLUMN_MAP.put(null, tableColumnMap);
+
+// 字段名映射配置 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+Map<String, Map<String, String>> tableKeyColumnMap = new HashMap<>();
+
+Map<String, String> userKeyColumnMap = new HashMap<>();
+userKeyColumnMap.put("gender", "sex");
+userKeyColumnMap.put("createTime", "date");
+tableKeyColumnMap.put("User", userKeyColumnMap);
+
+Map<String, String> privacyKeyColumnMap = new HashMap<>();
+privacyKeyColumnMap.put("rest", "balance");
+// 需要对应方法传参也是这样拼接才行，例如 ColumnUtil.compatInputKey(super.getKey(key), getSQLDatabase() + "-" + getSQLSchema() + "-" + getTable(), getMethod());
+tableKeyColumnMap.put("MYSQL-sys-Privacy", privacyKeyColumnMap);
+
+ColumnUtil.VERSIONED_KEY_COLUMN_MAP.put(null, tableKeyColumnMap);
+// 字段名映射配置 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+
+ColumnUtil.init();
+}
+```
+
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