數據庫中有外鍵時JavaBean的寫法
阿新 • • 發佈:2018-01-27
tex java term 找到 color nag 出現 覆蓋 分享 當寫表和實體類之間映射的時候,一旦出現外鍵,要通過外鍵找到另外一個類,一旦出現外鍵必須寫成類型
private Address address;
person表
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; } //覆蓋原來的toString方法 @Override public String toString() { return "Person [pid=" + pid + ",pname=" + pname + ",age=" + age +"]"; } }
public class Address { private String aid; //主鍵 private String province; //省 private String city; //市 private String district; //區 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; } }
數據庫中有外鍵時JavaBean的寫法