数据库中有外键时JavaBean的编辑法
发布时间：2022-06-27 16:48:41 所属栏目：MySql教程 来源：互联网
导读：当写表和实体类之间映射的时候，一旦出现外键，要通过外键找到另外一个类，一旦出现外键必须写成类型 private Address address; person表 public class Person { private String pid; private String pname; private int age; private Address address; pu
|
当写表和实体类之间映射的时候，一旦出现外键，要通过外键找到另外一个类，一旦出现外键必须写成类型 private Address address; person表 public class Person { private String pid; private String pname; private int age; private Address address; public Address getAddress() { return address; } public void setAddress(Address address) { this.address = address; } public String getPid() { return pid; } public void setPid(String pid) { this.pid = pid; } public String getPname() { return pname; } public void setPname(String pname) { this.pname = pname; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } //覆盖原来的toString方法 @Override public String toString() { return "Person [pid=" + pid + ",pname=" + pname + ",age=" + age +"]"; } } 数据库中有外键时JavaBean的写法 public class Address { private String aid; //主键 private String province; //省 private String city; //市 private String district; //区 private String street; //街道 public String getAid() { return aid; } public void setAid(String aid) { this.aid = aid; } public String getProvince() { return province; } public void setProvince(String province) { this.province = province; } public String getCity() { return city; } public void setCity(String city) { this.city = city; } public String getDistrict() { return district; } public void setDistrict(String district) { this.district = district; } public String getStreet() { return street; } public void setStreet(String street) { this.street = street; } } （编辑：锡盟站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
站长推荐