怎么解决Persistent entity PaymentNoticeDetailMain should have primary key这个问题
时间: 2024-03-20 13:45:05 浏览: 15
To solve the problem of PaymentNoticeDetailMain entity not having a primary key, you need to add a primary key to the table.
If you are using an ORM (Object-Relational Mapping) framework like Hibernate or JPA, you can annotate the primary key field in your entity class with the @Id annotation. For example, if your PaymentNoticeDetailMain has an attribute called "id", you can annotate it like this:
```
@Id
private Long id;
```
If you are using SQL to create the table, you can add a primary key constraint to the table definition. For example, if your PaymentNoticeDetailMain table has a column called "id", you can define it as the primary key like this:
```
CREATE TABLE PaymentNoticeDetailMain (
id INT NOT NULL PRIMARY KEY,
...
);
```
Once you have added a primary key to the PaymentNoticeDetailMain entity, you should be able to perform CRUD (Create, Read, Update, Delete) operations on the table without any problems.