package com.kucun.data.entity;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
/**
产品组件关联类
@author Administrator
*/
@Entity
@Table(name=“chanpin_zujian”)
public class Chanpin_zujian {
@Id
private Integer id;
// 关联到产品
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = “chanpin_id”)
private Chanpin chanpin;
// 关联到组件
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "zujian_id")
private Zujian zujian;
// 关联到板材
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "bancai_id")
private Bancai bancai;
private Double one_howmany;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Chanpin getChanpin() {
return chanpin;
}
public void setChanpin(Chanpin chanpin) {
this.chanpin = chanpin;
}
public Zujian getZujian() {
return zujian;
}
public void setZujian(Zujian zujian) {
this.zujian = zujian;
}
public Bancai getBancai() {
return bancai;
}
public void setBancai(Bancai bancai) {
this.bancai = bancai;
}
public Double getOne_howmany() {
return one_howmany;
}
public void setOne_howmany(Double one_howmany) {
this.one_howmany = one_howmany;
}
public Chanpin_zujian() {
super();
// TODO Auto-generated constructor stub
}
}
package com.kucun.data.entity;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.ManyToMany;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;
/**
订单
@author Administrator
*/
@Entity
@Table(name=“dingdan”, uniqueConstraints = {
@UniqueConstraint(columnNames = “number”)
})
public class Dingdan {
@Id
private Integer id;
//订单号
private String number;
@OneToMany(
mappedBy = “dingdan”,
cascade = CascadeType.ALL,
fetch = FetchType.LAZY,
orphanRemoval = true
)
private List<Dingdan_chanpin> dingdan_chanpins;
// 优化订单与订单组件关联
@OneToMany(
mappedBy = “dingdan”,
cascade = CascadeType.ALL,
fetch = FetchType.LAZY,
orphanRemoval = true
)
private List<Dingdan_chanpin_zujian> dingdan_chanpins_zujians;
public List<Dingdan_chanpin_zujian> getDingdan_chanpins_zujians() {
return dingdan_chanpins_zujians;
}
public void setDingdan_chanpins_zujians(List<Dingdan_chanpin_zujian> dingdan_chanpins_zujians) {
this.dingdan_chanpins_zujians = dingdan_chanpins_zujians;
}
public List<Dingdan_chanpin> getDingdan_chanpins() {
return dingdan_chanpins;
}
public void setDingdan_chanpins(List<Dingdan_chanpin> dingdan_chanpins) {
this.dingdan_chanpins = dingdan_chanpins;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getNumber() {
return number;
}
public void setNumber(String number) {
this.number = number;
}
public Dingdan(Integer id, String number) {
super();
this.id = id;
this.number = number;
}
public Dingdan() {
super();
// TODO Auto-generated constructor stub
}
}
package com.kucun.data.entity;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
/**
订单和产品关联
@author Administrator
*/
@Entity
@Table(name=“dingdan_chanpin”)
public class Dingdan_chanpin {
@Id
private Integer id;
//产品信息
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = “dingdan_id”) // 指
private Dingdan dingdan;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "chanpin_id") // 指
private Chanpin chanpin;
private Integer shuliang;//产品数量;
public Chanpin getChanpin() {
return chanpin;
}
public void setChanpin(Chanpin chanpin) {
this.chanpin = chanpin;
}
public Integer getShuliang() {
return shuliang;
}
public void setShuliang(Integer shuliang) {
this.shuliang = shuliang;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Dingdan getDingdan() {
return dingdan;
}
public void setDingdan(Dingdan dingdan) {
this.dingdan = dingdan;
}
public Chanpin getChanping() {
return chanpin;
}
public void setChanping(Chanpin chanping) {
this.chanpin = chanping;
}
}
package com.kucun.data.entity;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
/**
一个订单中的产品组件订购板材数量
@author Administrator
*/
@Entity
public class Dingdan_chanpin_zujian {
@Id
private Integer id;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "dingdan_id") // 指定外键列
private Dingdan dingdan;
@ManyToOne(fetch = FetchType.LAZY)
@JoinColumn(name = "chanpin_zujian_id") // 指定外键列
private Chanpin_zujian zujian; // 修改为单数形式
//板材
@ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@JoinColumn(name = "bancai_id")
private Bancai bancai;
//订购数
private Integer shuliang ;
public Dingdan_chanpin_zujian() {
super();
// TODO Auto-generated constructor stub
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Dingdan getDingdan() {
return dingdan;
}
public void setDingdan(Dingdan dingdan) {
this.dingdan = dingdan;
}
public Bancai getBancai() {
return bancai;
}
public void setBancai(Bancai bancai) {
this.bancai = bancai;
}
public Chanpin_zujian getZujian() {
return zujian;
}
public void setZujian(Chanpin_zujian zujian) {
this.zujian = zujian;
}
public Integer getShuliang() {
return shuliang;
}
public void setShuliang(Integer shuliang) {
this.shuliang = shuliang;
}
}
package com.kucun.data.entity;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
通信类
@author Administrator
*/
public class Information {
private static final ObjectMapper mapper = new ObjectMapper();
private Integer Status ;
private String text;
private Object data;
public Integer getStatus() {
return Status;
}
public void setStatus(Integer status) {
Status = status;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Object getData() {
return data;
}
public void setData(Object data) {
this.data = data;
}
public Information(Integer status, String text, Object data) {
super();
Status = status;
this.text = text;
this.data = data;
}
@SuppressWarnings({“unchecked”,“rawtypes”})
public Information(Integer status, String text, String data, Class T) throws Exception {
super();
Status = status;
this.text = text;
this.data = fromJson(data,T);
}
public Information() {
super();
// TODO Auto-generated constructor stub
}
public String DataJson() throws JsonProcessingException {
// Java对象转JSON
return mapper.writeValueAsString(this);
}
@SuppressWarnings(“unchecked”)
public <T> T fromJson(String json, Class<T> clazz) throws Exception {
data= mapper.readValue(json, clazz);
return (T) data;
}
public static Information NewSuccess(Object data) {
return new Information(200, "success", data);
}
public static Information NewSuccess(String data) {
return new Information(200, "success", data);
}
public static Information Newfail(Integer status,String text,Object data) {
return new Information(status, "success", data);
}
}
package com.kucun.data.entity;
import java.util.Date;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
@Entity
public class Jinhuo {
@Id
private Integer id;
@ManyToOne
private Dingdan dingdan;
@ManyToOne
private Chanpin chanpin;
@ManyToOne
private Zujian zujian;
@ManyToOne
private Bancai bancai;
private Integer shuliang;
private Date date;
@ManyToOne
private User user;
public Jinhuo(Integer id, Dingdan dingdan, Chanpin chanpin, Zujian zujian, Bancai bancai, Integer shuliang,
Date date, User user) {
super();
this.id = id;
this.dingdan = dingdan;
this.chanpin = chanpin;
this.zujian = zujian;
this.bancai = bancai;
this.shuliang = shuliang;
this.date = date;
this.user = user;
}
public Jinhuo() {
super();
// TODO Auto-generated constructor stub
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Dingdan getDingdan() {
return dingdan;
}
public void setDingdan(Dingdan dingdan) {
this.dingdan = dingdan;
}
public Chanpin getChanpin() {
return chanpin;
}
public void setChanpin(Chanpin chanpin) {
this.chanpin = chanpin;
}
public Zujian getZujian() {
return zujian;
}
public void setZujian(Zujian zujian) {
this.zujian = zujian;
}
public Bancai getBancai() {
return bancai;
}
public void setBancai(Bancai bancai) {
this.bancai = bancai;
}
public Integer getShuliang() {
return shuliang;
}
public void setShuliang(Integer shuliang) {
this.shuliang = shuliang;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
}
package com.kucun.data.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToOne;
/**
库存
@author Administrator
*/
@Entity
public class Kucun {
@Id
private Integer id;
private Long shuliang;
@OneToOne(fetch = FetchType.LAZY) // 正确映射 Bancai 实体
@JoinColumn(name = "bancai_id", referencedColumnName = "id")
private Bancai bancai;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Bancai getBancai() {
return bancai;
}
public void setBancai(Bancai bancai) {
this.bancai = bancai;
}
public Long getShuliang() {
return shuliang;
}
public void setShuliang(Long shuliang) {
this.shuliang = shuliang;
}
public Kucun(Integer id, Bancai bancai, Long shuliang) {
super();
this.id = id;
this.bancai = bancai;
this.shuliang = shuliang;
}
public Kucun() {
super();
// TODO Auto-generated constructor stub
}
}
package com.kucun.data.entity;
import java.util.List;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.ManyToMany;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
/**
木皮
@author Administrator
*/
@Entity
@Table(name=“caizhi”, uniqueConstraints = {
@UniqueConstraint(columnNames = “name”)
})
@JsonIgnoreProperties({“hibernateLazyInitializer”, “handler”})
public class Mupi extends SimpleEntity {
/**
* 是否有油漆
*/
private Boolean you;
// 添加 OneToMany 映射
@OneToMany(mappedBy = "mupi1") // 指向 Bancai 中的 mupi1 字段
@JsonIgnore
private List<Bancai> bancaisForMupi1;
@OneToMany(mappedBy = "mupi2") // 指向 Bancai 中的 mupi2 字段
@JsonIgnore
private List<Bancai> bancaisForMupi2;
public List<Bancai> getBancaisForMupi1() {
return bancaisForMupi1;
}
public void setBancaisForMupi1(List<Bancai> bancaisForMupi1) {
this.bancaisForMupi1 = bancaisForMupi1;
}
public List<Bancai> getBancaisForMupi2() {
return bancaisForMupi2;
}
public void setBancaisForMupi2(List<Bancai> bancaisForMupi2) {
this.bancaisForMupi2 = bancaisForMupi2;
}
public Mupi() {
super();
}
public Boolean getYou() {
return you;
}
public void setYou(Boolean you) {
this.you = you;
}
}
package com.kucun.data.entity;
import java.util.Objects;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
用户
@author Administrator
/
@Entity
@Table(name=“user”)
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
/*
* 名字
/
@Column(nullable=false)
private String name;
/*
* 账号
/
@Column(nullable=false)
private String andy;
/*
* 密码
/
@Column(nullable=false)
private String pass;
/*
* 权限
*/
@Column(nullable=false)
private int role;
public User() {
super();
}
public User(int id, String name, String andy, String pass) {
super();
this.id = id;
this.name = name;
this.andy = andy;
this.pass = pass;
}
public Integer getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAndy() {
return andy;
}
public void setAndy(String andy) {
this.andy = andy;
}
public String getPass() {
return pass;
}
public void setPass(String pass) {
this.pass = pass;
}
public int getRole() {
System.out.println(role);
return role;
}
public void setRole(int role) {
this.role = role;
}
@Override
public String toString() {
return "{id:" + id + ", name:" + name + ", andy:" + andy + ", pass:" + pass + ", role:" + role + "}";
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
User user = (User) o;
return Objects.equals(id, user.id) &&
Objects.equals(name, user.name) &&
Objects.equals(andy, user.andy)&&
Objects.equals(role, user.role); //添加所有属性比较
}
@Override
public int hashCode() {
return Objects.hash(id, name, andy,pass,role);
}
}
package com.kucun.data.entity;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
@Entity
public class Zujian extends SimpleEntity{
// 反向关联到产品组件
@OneToMany(
mappedBy = "zujian",
cascade = CascadeType.ALL,
fetch = FetchType.LAZY
)
private List<Chanpin_zujian> chanpins;
public List<Chanpin_zujian> getChanpins() {
return chanpins;
}
public void setChanpins(List<Chanpin_zujian> chanpins) {
this.chanpins = chanpins;
}
}
package com.kucun.data.entity;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import com.fasterxml.jackson.annotation.JsonBackReference;
import com.fasterxml.jackson.annotation.JsonManagedReference;
/**
板材
@author Administrator
*/
@Entity
@Table(name=“bancai”)
public class Bancai {
@Id
private int id;
@ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@JoinColumn(name = “caizhi_id”) //
@JsonManagedReference // 标记为“主”关联方
private Caizhi caizhi;
@ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@JoinColumn(name = “mupi1_id”)
private Mupi mupi1;
@ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@JoinColumn(name = “mupi2_id”)
private Mupi mupi2;
private Double houdu;
@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@JoinColumn(name = “kucun_id”, referencedColumnName = “id”)
private Kucun kucun;
public Kucun getKucun() {
return kucun;
}
public void setKucun(Kucun kucun) {
this.kucun = kucun;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public Caizhi getCaizhi() {
return caizhi;
}
public void setCaizhi(Caizhi caizhi) {
this.caizhi = caizhi;
}
public Mupi getMupi1() {
return mupi1;
}
public void setMupi1(Mupi mupi1) {
this.mupi1 = mupi1;
}
public Mupi getMupi2() {
return mupi2;
}
public void setMupi2(Mupi mupi2) {
this.mupi2 = mupi2;
}
public Double getHoudu() {
return houdu;
}
public void setHoudu(Double houdu) {
this.houdu = houdu;
}
public Bancai(int id, Caizhi caizhi, Mupi mupi1, Mupi mupi2, Double houdu) {
super();
this.id = id;
this.caizhi = caizhi;
this.mupi1 = mupi1;
this.mupi2 = mupi2;
this.houdu = houdu;
}
public Bancai() {
super();
}
}
package com.kucun.data.entity;
import java.util.List;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
/**
板材材质
@author Administrator
*/
@Entity
@Table(name=“caizhi”, uniqueConstraints = {
@UniqueConstraint(columnNames = “name”)
})
@JsonIgnoreProperties({“hibernateLazyInitializer”, “handler”})
public class Caizhi extends SimpleEntity{
@OneToMany(mappedBy=“caizhi”)
@JsonIgnore
private List<Bancai> bancais;
public Caizhi() {
super();
}
// 添加反向关联维护方法
public void addBancai(Bancai bancai) {
bancais.add(bancai);
bancai.setCaizhi(this);
}
// 添加移除方法
public void removeBancai(Bancai bancai) {
bancais.remove(bancai);
bancai.setCaizhi(null);
}
public List<Bancai> getBancais() {
return bancais;
}
public void setBancais(List<Bancai> bancais) {
this.bancais = bancais;
}
}
package com.kucun.data.entity;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;
/**
产品类
@author Administrator
*/
@Entity
@Table(name=“chanpin”, uniqueConstraints = {
@UniqueConstraint(columnNames = “bianhao”)
})
public class Chanpin {
@Id
private Integer id;
// 关联订单产品
@OneToMany(
mappedBy = “chanpin”,
cascade = CascadeType.ALL,
fetch = FetchType.LAZY
)
private List<Dingdan_chanpin> dingdans;
private String bianhao;
@OneToMany(
mappedBy = "chanpin",
cascade = CascadeType.ALL,
fetch = FetchType.LAZY,
orphanRemoval = true
)
private List<Chanpin_zujian> zujians;
// 添加/移除组件的辅助方法
public void addZujian(Chanpin_zujian zujian) {
zujians.add(zujian);
zujian.setChanpin(this);
}
public void removeZujian(Chanpin_zujian zujian) {
zujians.remove(zujian);
zujian.setChanpin(null);
}
// 添加/移除组件的辅助方法
public void addDingdan(Dingdan_chanpin dingdan) {
dingdans.add(dingdan);
dingdan.setChanpin(this);
}
public void removeDingdan(Dingdan_chanpin dingdian) {
dingdans.remove(dingdian);
dingdian.setChanpin(null);
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public List<Dingdan_chanpin> getDingdans() {
return dingdans;
}
public void setDingdans(List<Dingdan_chanpin> dingdans) {
this.dingdans = dingdans;
}
public String getBianhao() {
return bianhao;
}
public void setBianhao(String bianhao) {
this.bianhao = bianhao;
}
public List<Chanpin_zujian> getZujians() {
return zujians;
}
public void setZujians(List<Chanpin_zujian> zujians) {
this.zujians = zujians;
}
public Chanpin(Integer id, List<Dingdan_chanpin> dingdians, String bianhao, List<Chanpin_zujian> zujians) {
super();
this.id = id;
this.dingdans = dingdians;
this.bianhao = bianhao;
this.zujians = zujians;
}
public Chanpin() {
super();
// TODO Auto-generated constructor stub
}
}
创建api 分别输出全部数据，下级实体类还是一个对象 对象中只有id属性
本文详细介绍了在Java持久化中如何正确配置表的延迟加载属性，避免常见的配置误区。通过具体的注解示例，如使用 @Proxy(lazy=false) 和 @Entity 等，帮助读者理解如何有效设置延迟加载。
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