想请教下，表名不固定的时候应该怎么办

[luozongle]

我们现在经常会遇到表的数量不固定，但是表结构是相同的。比如我们有一个表A记录了所有的运行商与表名的对应关系，每有一个新运营商接入我们系统，就增加一张表，并且在表A中插入一条记录 记录了运营商的名称，对应的表名，当这个运营商登录我们的系统，操作的就是它自己的表，这种场景应该怎么办呢，目前我们是在代码里手动拼接sql，感觉好麻烦啊

[zhangzhenhuajack]

利用spel表达式 表名通过参数传递进去。返回结果定一个统一的接口

[zhangzhenhuajack]

https://docs.spring.io/spring-data/jpa/docs/2.3.3.RELEASE/reference/html/#jpa.query.spel-expressions

[zhangzhenhuajack]

https://docs.spring.io/spring-data/jpa/docs/2.3.3.RELEASE/reference/html/#projection.dynamic

[zhangzhenhuajack]

[zhangzhenhuajack]

貌似这种种做法行不通

[zhangzhenhuajack]

public class AutoTableName extends EmptyInterceptor {
    private String targetName;// 目标表名
    private String tableName;// 操作表名
 
    public AutoTableName() {}
 
    public AutoTableName(String targetName,String tableName) {
        this.targetName= targetName;
        this.tableName= tableName;
    }
 
    @Override
    public String onPrepareStatement(String sql) {
        sql = sql.replaceAll(targetName, tableName);
        return sql;
    }
  
}

[zhangzhenhuajack]

public class TNamingStrategy implements NamingStrategy{

 @Override
 public String classToTableName(String className) {
  // TODO Auto-generated method stub
  return tableName(StringHelper.unqualify(className).toUpperCase());
 }

 @Override
 public String columnName(String columnName) {
  // TODO Auto-generated method stub
  return columnName;
 }

 @Override
 public String propertyToColumnName(String propertyName) {
  // TODO Auto-generated method stub
  return propertyName.toUpperCase();
 }

 @Override
 public String propertyToTableName(String className, String propertyName) {
  // TODO Auto-generated method stub
  return classToTableName(className) + '_' + propertyToColumnName(propertyName);
 }

 @Override
 public String tableName(String tableName) {
  // TODO Auto-generated method stub
  return "T_"+tableName;
 }

}