实体对象 主键IdType要设置为AUTO 表示数据库ID自增
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@Data @EqualsAndHashCode (callSuper = false ) @Accessors (chain = true ) public class Employee implements Serializable { private static final long serialVersionUID = 1L; @TableId (value = "id" , type = IdType.AUTO) private Integer id; private String lastName; private String email; private Integer gender; private Integer age; } |
返回的实体就会包含主键值
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@PostMapping ( "add" ) @ResponseBody public Employee addEmployee() { Employee employee = new Employee(); employee.setLastName( "chen" ).setAge( 18 ).setEmail( "10000@qq.com" ).setGender( 1 ); employeeService.saveOrUpdate(employee); return employee; } |
或者mapper层使用insert方法也会返回主键
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@Override public Employee saveEmp(Employee employee) { baseMapper.insert(employee); return employee; } |
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原文链接:https://blog.csdn.net/weixin_45631876/article/details/106517711