@OneToOne or @ManyToOne on references an unknown entity:

本文介绍了一种常见的Hibernate和Spring MVC集成错误,即@OneToOne或@ManyToOne引用未知实体的问题,并给出了具体的错误堆栈跟踪及解决方案。

1使用hibernatespring MVC 时报错:

Xml代码   收藏代码
  1. Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [beans.xml]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: @OneToOne or @ManyToOne on com.apidoc.entity.APIOne.APIGroup references an unknown entity: com.apidoc.entity.APIGroup  
  2.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1482)  
  3.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)  
  4.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)  
  5.     at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)  
  6.     at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)  
  7.     at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)  
  8.     at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)  
  9.     at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:442)  
  10.     at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:416)  
  11.     at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:550)  
  12.     at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:159)  
  13.     at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)  
  14.     at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:303)  
  15.     ... 23 more  
  16. Caused by: org.hibernate.AnnotationException: @OneToOne or @ManyToOne on com.apidoc.entity.APIOne.APIGroup references an unknown entity: com.apidoc.entity.APIGroup  
  17.     at org.hibernate.cfg.ToOneFkSecondPass.doSecondPass(ToOneFkSecondPass.java:109)  
  18.     at org.hibernate.cfg.Configuration.processEndOfQueue(Configuration.java:1536)  
  19.     at org.hibernate.cfg.Configuration.processFkSecondPassInOrder(Configuration.java:1457)  
  20.     at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1365)  
  21.     at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1756)  
  22.     at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1840)  
  23.     at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:247)  
  24.     at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:373)  
  25.     at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:358)  
  26.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1541)  
  27.     at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1479)  
  28.     ... 35 more  

 最后发现是,类缺少了@Entity 注解

 

 

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); } public static Information NewFail(String string) { // TODO Auto-generated method stub return new Information(400,string,null); } } package com.kucun.data.entity; import java.util.Date; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.ManyToOne; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; @Entity public class Jinhuo implements EntityBasis{ @Id private Integer id; @ManyToOne @JsonSerialize(using = IdOnlySerializer.class) private Dingdan dingdan; @ManyToOne @JsonSerialize(using = IdOnlySerializer.class) private Chanpin chanpin; @ManyToOne @JsonSerialize(using = IdOnlySerializer.class) private Zujian zujian; @ManyToOne @JsonSerialize(using = IdOnlySerializer.class) private Bancai bancai; private Integer shuliang; private Date date; @ManyToOne @JsonSerialize(using = IdOnlySerializer.class) 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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; /** 库存 @author Administrator */ @Entity public class Kucun implements EntityBasis{ @Id private Integer id; private Long shuliang; @OneToOne(fetch = FetchType.LAZY) // 正确映射 Bancai 实体 @JoinColumn(name = “bancai_id”, referencedColumnName = “id”) @JsonSerialize(using = IdOnlySerializer.class) 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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; /** 木皮 @author Administrator */ @Entity @Table(name=“caizhi”, uniqueConstraints = { @UniqueConstraint(columnNames = “name”) }) @JsonIgnoreProperties({“hibernateLazyInitializer”, “handler”}) public class Mupi extends SimpleEntity implements EntityBasis{ /** 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 @JsonSerialize(contentUsing = IdOnlySerializer.class) private List<Bancai> bancaisForMupi1; @OneToMany(mappedBy = “mupi2”) // 指向 Bancai 中的 mupi2 字段 @JsonIgnore @JsonSerialize(contentUsing = IdOnlySerializer.class) 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 javax.persistence.Column; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.MappedSuperclass; @MappedSuperclass public abstract class SimpleEntity implements EntityBasis{ @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer id; @Column(nullable = false, unique = true) private String name; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } // Getters and Setters… } 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 implements EntityBasis{ @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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; @Entity public class Zujian extends SimpleEntity implements EntityBasis{ // 反向关联到产品组件 @OneToMany( mappedBy = “zujian”, cascade = CascadeType.ALL, fetch = FetchType.LAZY ) @JsonSerialize(contentUsing = IdOnlySerializer.class) 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 java.lang.annotation.Annotation; 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.kucun.data.entity.DTO.*; import com.fasterxml.jackson.annotation.JsonBackReference; import com.fasterxml.jackson.annotation.JsonManagedReference; import com.fasterxml.jackson.databind.annotation.JsonSerialize; /** 板材 @author Administrator */ @Entity @Table(name=“bancai”) public class Bancai implements EntityBasis { @Id private int id; @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) @JoinColumn(name = “caizhi_id”) // @JsonManagedReference // 标记为“主”关联方 @JsonSerialize(using = IdOnlySerializer.class) private Caizhi caizhi; @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) @JoinColumn(name = “mupi1_id”) @JsonSerialize(using = IdOnlySerializer.class) private Mupi mupi1; @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) @JoinColumn(name = “mupi2_id”) @JsonSerialize(using = IdOnlySerializer.class) 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 Integer 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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; /** 板材材质 @author Administrator */ @Entity @Table(name=“caizhi”, uniqueConstraints = { @UniqueConstraint(columnNames = “name”) }) @JsonIgnoreProperties({“hibernateLazyInitializer”, “handler”}) public class Caizhi extends SimpleEntity implements EntityBasis{ @OneToMany(mappedBy=“caizhi”) @JsonIgnore @JsonSerialize(contentUsing = IdOnlySerializer.class) 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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; /** 产品类 @author Administrator */ @Entity @Table(name=“chanpin”, uniqueConstraints = { @UniqueConstraint(columnNames = “bianhao”) }) public class Chanpin implements EntityBasis { @Id private Integer id; // 关联订单产品 @OneToMany( mappedBy = “chanpin”, cascade = CascadeType.ALL, fetch = FetchType.LAZY ) @JsonSerialize(contentUsing = IdOnlySerializer.class) private List<Dingdan_chanpin> dingdans; private String bianhao; @OneToMany( mappedBy = “chanpin”, cascade = CascadeType.ALL, fetch = FetchType.LAZY, orphanRemoval = true ) @JsonSerialize(contentUsing = IdOnlySerializer.class) 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 } } 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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; /** 产品组件关联类 @author Administrator */ @Entity @Table(name=“chanpin_zujian”) public class Chanpin_zujian implements EntityBasis { @Id private Integer id; // 关联到产品 @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = “chanpin_id”) @JsonSerialize(using = IdOnlySerializer.class) private Chanpin chanpin; // 关联到组件 @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = “zujian_id”) @JsonSerialize(using = IdOnlySerializer.class) private Zujian zujian; // 关联到板材 @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = “bancai_id”) @JsonSerialize(using = IdOnlySerializer.class) 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.Date; 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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; /** 订单 @author Administrator */ @Entity @Table(name=“dingdan”, uniqueConstraints = { @UniqueConstraint(columnNames = “number”) }) public class Dingdan implements EntityBasis{ @Id private Integer id; //订单号 private String number; private Date xiadan; private Date jiaohuo; @OneToMany( mappedBy = “dingdan”, cascade = CascadeType.ALL, fetch = FetchType.LAZY, orphanRemoval = true ) @JsonSerialize(contentUsing = IdOnlySerializer.class) 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 ) @JsonSerialize(contentUsing = IdOnlySerializer.class) private List<Dingdan_chanpin_zujian> dingdan_chanpins_zujians; public Date getXiadan() { return xiadan; } public void setXiadan(Date xiadan) { this.xiadan = xiadan; } public Date getJiaohuo() { return jiaohuo; } public void setJiaohuo(Date jiaohuo) { this.jiaohuo = jiaohuo; } 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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; /** 订单和产品关联 @author Administrator */ @Entity @Table(name=“dingdan_chanpin”) public class Dingdan_chanpin implements EntityBasis { @Id private Integer id; //产品信息 @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = “dingdan_id”) // 指 @JsonSerialize(using = IdOnlySerializer.class) private Dingdan dingdan; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = “chanpin_id”) // 指 @JsonSerialize(using = IdOnlySerializer.class) 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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.IdOnlySerializer; /** 一个订单中的产品组件订购板材数量 @author Administrator */ @Entity public class Dingdan_chanpin_zujian implements EntityBasis{ @Id private Integer id; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "dingdan_id") // 指定外键列 @JsonSerialize(using = IdOnlySerializer.class) private Dingdan dingdan; @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "chanpin_zujian_id") // 指定外键列 @JsonSerialize(using = IdOnlySerializer.class) private Chanpin_zujian zujian; // 修改为单数形式 //板材 @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) @JoinColumn(name = "bancai_id") @JsonSerialize(using = IdOnlySerializer.class) 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; public interface EntityBasis { Integer getId(); } package com.kucun.data.entity.DTO; import java.util.List; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import com.fasterxml.jackson.annotation.JsonInclude; import com.fasterxml.jackson.databind.BeanDescription; import com.fasterxml.jackson.databind.DeserializationFeature; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.SerializationConfig; import com.fasterxml.jackson.databind.SerializationFeature; import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector; import com.fasterxml.jackson.databind.module.SimpleModule; import com.fasterxml.jackson.databind.ser.BeanPropertyWriter; import com.fasterxml.jackson.databind.ser.BeanSerializerBuilder; import com.fasterxml.jackson.databind.ser.BeanSerializerModifier; import com.kucun.data.entity.EntityBasis; // 2. 配置 ObjectMapper @Configuration public class JacksonConfig { @Bean public ObjectMapper objectMapper() { ObjectMapper mapper = new ObjectMapper(); // 基本配置 mapper.setAnnotationIntrospector(new JacksonAnnotationIntrospector()); mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL); // 注册自定义模块 SimpleModule module = new SimpleModule(); module.addSerializer(EntityBasis.class, new EntityBasisSerializer()); // 添加Hibernate支持 module.setSerializerModifier(new HibernateSerializerModifier()); mapper.registerModule(module); // 禁用Jackson的FAIL_ON_UNKNOWN_PROPERTIES功能 mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); // 关闭对同一对象的循环引用检测 mapper.configure(SerializationFeature.FAIL_ON_SELF_REFERENCES, false); return mapper; } // 3. Hibernate序列化特殊处理 private static class HibernateSerializerModifier extends BeanSerializerModifier { @Override public BeanSerializerBuilder updateBuilder(SerializationConfig config, BeanDescription beanDesc, BeanSerializerBuilder builder) { // 添加对Hibernate代理类的过滤 List<BeanPropertyWriter> properties = builder.getProperties(); properties.removeIf(property -> property.getName().equals(“handler”) || property.getName().equals(“hibernateLazyInitializer”)); return builder; } } } package com.kucun.data.entity.DTO; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.databind.JsonSerializer; import com.fasterxml.jackson.databind.SerializerProvider; import com.kucun.data.entity.EntityBasis; import java.io.IOException; public class IdOnlySerializer extends JsonSerializer<EntityBasis> { @Override public void serialize(EntityBasis entity, JsonGenerator gen, SerializerProvider provider) throws IOException { if (entity == null) { gen.writeNull(); } else { gen.writeStartObject(); gen.writeNumberField("id", entity.getId()); gen.writeEndObject(); } } }{“text”:“success”,“data”:{“bancais”:[{“id”:1},{“id”:2}],“dingdans”:[{“id”:1}],“mupis”:[{“id”:1,“bancaisForMupi1”:[{“id”:1}],“bancaisForMupi2”:[{“id”:1}]},{“id”:2,“bancaisForMupi1”:[{“id”:2}],“bancaisForMupi2”:[{“id”:2}]},{“id”:3,“bancaisForMupi1”:[],“bancaisForMupi2”:[]}],“chanpins”:[{“id”:1}],“kucuns”:[{“id”:1,“shuliang”:12,“bancai”:{“id”:1}},{“id”:2,“shuliang”:32,“bancai”:{“id”:2}}],“dingdan_chanpin_zujians”:[],“chanpin_zujians”:[{“id”:1,“chanpin”:{“id”:1},“zujian:{“id”:1,“chanpins”:[{“id”:1}]},“bancai”:{“id”:1},“one_howmany”:15.0}],“zujians”:[{“id”:1,“chanpins”:[{“id”:1}]}],“caizhis”:[{“id”:1,“bancais”:[{“id”:1},{“id”:2}]},{“id”:3,“bancais”:[]},{“id”:2,“bancais”:[]}],“dingdan_chanpins”:[{“id”:1,“dingdan:{“id”:1},“chanpin”:{“id”:1},“shuliang”:222}],“users”:[{“id”:1,“name”:“超管”,“andy”:“123456”,“pass”:“$2a$10$JflS0yjBRY6yDRxdhAuHVunetrG2P6q8gj8HQzuaPtW8tt/OqO73S”,“role”:0}]},“status”:200} 有些直接查的对象也是只有id, 我要的是直接实体全部信息 关联对象还是对象属性只有id,关联对象一直也只会有id, 现在的问题是 我直接查的实体对象也被搞得只剩id了
06-12
{"text":"success","data":[{"id":1,"id":1,"caizhi":{"id":1},"mupi1":{"id":1},"mupi2":{"id":1},"houdu":15.0,"kucun":{"id":1}},{"id":2,"id":2,"caizhi":{"id":1},"mupi1":{"id":2},"mupi2":{"id":2},"houdu":15.0,"kucun":{"id":2}}],"status":200}package com.kucun.data.entity; import java.lang.annotation.Annotation; 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.kucun.data.entity.DTO.*; import com.fasterxml.jackson.annotation.JsonBackReference; import com.fasterxml.jackson.annotation.JsonManagedReference; import com.fasterxml.jackson.databind.annotation.JsonSerialize; /** * 板材 * @author Administrator * */ @Entity @Table(name="bancai") public class Bancai implements EntityBasis { @Id private int id; @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) @JoinColumn(name = "caizhi_id") // @JsonManagedReference // 标记为“主”关联方 @JsonSerialize(using = IdOnlySerializer.class) private Caizhi caizhi; @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) @JoinColumn(name = "mupi1_id") @JsonSerialize(using = IdOnlySerializer.class) private Mupi mupi1; @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) @JoinColumn(name = "mupi2_id") @JsonSerialize(using = IdOnlySerializer.class) 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 Integer 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(); } } @RequestMapping("/all/{e}") public Information getAllDataWithChildIds(@PathVariable String e) { return appService.getAllDataWithChildIdse(e); } public Information getAllDataWithChildIdse(String e) { JpaRepository<?, ?> jp = repositoryService.getJpaRepository(e); System.out.println(jp); return Information.NewSuccess(jp.findAll()); } 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);a } public static Information Newfail(Integer status,String text,Object data) { return new Information(status, "success", data); } public static Information NewFail(String string) { // TODO Auto-generated method stub return new Information(400,string,null); } } package com.kucun.data.entity.DTO; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.databind.JsonSerializer; import com.fasterxml.jackson.databind.SerializerProvider; import com.kucun.data.entity.EntityBasis; import java.io.IOException; public class IdOnlySerializer extends JsonSerializer<EntityBasis> { @Override public void serialize(EntityBasis entity, JsonGenerator gen, SerializerProvider provider) throws IOException { if (entity == null) { gen.writeNull(); } else { gen.writeStartObject(); gen.writeNumberField("id", entity.getId()); gen.writeEndObject(); } } }package com.kucun.data.entity.DTO; import java.util.List; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import com.fasterxml.jackson.annotation.JsonInclude; import com.fasterxml.jackson.databind.BeanDescription; import com.fasterxml.jackson.databind.DeserializationFeature; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.SerializationConfig; import com.fasterxml.jackson.databind.SerializationFeature; import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector; import com.fasterxml.jackson.databind.module.SimpleModule; import com.fasterxml.jackson.databind.ser.BeanPropertyWriter; import com.fasterxml.jackson.databind.ser.BeanSerializerBuilder; import com.fasterxml.jackson.databind.ser.BeanSerializerModifier; import com.kucun.data.entity.EntityBasis; // 2. 配置 ObjectMapper @Configuration public class JacksonConfig { @Bean public ObjectMapper objectMapper() { ObjectMapper mapper = new ObjectMapper(); // 基本配置 mapper.setAnnotationIntrospector(new JacksonAnnotationIntrospector()); mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL); // 注册自定义模块 SimpleModule module = new SimpleModule(); module.addSerializer(EntityBasis.class, new EntityBasisSerializer()); // 添加Hibernate支持 module.setSerializerModifier(new HibernateSerializerModifier()); mapper.registerModule(module); // 禁用Jackson的FAIL_ON_UNKNOWN_PROPERTIES功能 mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); // 关闭对同一对象的循环引用检测 mapper.configure(SerializationFeature.FAIL_ON_SELF_REFERENCES, false); return mapper; } // 3. Hibernate序列化特殊处理 private static class HibernateSerializerModifier extends BeanSerializerModifier { @Override public BeanSerializerBuilder updateBuilder(SerializationConfig config, BeanDescription beanDesc, BeanSerializerBuilder builder) { // 添加对Hibernate代理类的过滤 List<BeanPropertyWriter> properties = builder.getProperties(); properties.removeIf(property -> property.getName().equals("handler") || property.getName().equals("hibernateLazyInitializer")); return builder; } } }package com.kucun.data.entity.DTO; import com.fasterxml.jackson.annotation.JsonInclude; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.databind.*; import com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector; import com.fasterxml.jackson.databind.module.SimpleModule; import com.fasterxml.jackson.databind.ser.BeanPropertyWriter; import com.fasterxml.jackson.databind.ser.BeanSerializer; import com.fasterxml.jackson.databind.ser.BeanSerializerBuilder; import com.fasterxml.jackson.databind.ser.BeanSerializerModifier; import com.kucun.data.entity.EntityBasis; import java.io.IOException; import java.lang.reflect.Field; import java.util.Collection; import java.util.Date; import java.util.List; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; // 1. 创建自定义序列化器 public class EntityBasisSerializer extends JsonSerializer<EntityBasis> { @Override public void serialize(EntityBasis entity, JsonGenerator gen, SerializerProvider provider) throws IOException { gen.writeStartObject(); gen.writeNumberField("id", entity.getId()); // 获取所有字段并处理 Field[] fields = entity.getClass().getDeclaredFields(); for (Field field : fields) { field.setAccessible(true); try { Object value = field.get(entity); if (value != null) { // 处理关联实体 if (value instanceof EntityBasis) { gen.writeObjectFieldStart(field.getName()); gen.writeNumberField("id", ((EntityBasis) value).getId()); gen.writeEndObject(); } // 处理集合类型 else if (value instanceof Collection) { gen.writeArrayFieldStart(field.getName()); for (Object item : (Collection<?>) value) { if (item instanceof EntityBasis) { gen.writeStartObject(); gen.writeNumberField("id", ((EntityBasis) item).getId()); gen.writeEndObject(); } } gen.writeEndArray(); } // 处理基本类型 else if (isSimpleType(field.getType())) { gen.writeObjectField(field.getName(), value); } } } catch (IllegalAccessException ignored) {} } gen.writeEndObject(); } private boolean isSimpleType(Class<?> type) { return type.isPrimitive() || type == String.class || Number.class.isAssignableFrom(type) || type == Boolean.class || type == Date.class; } } 怎么输出是两个id属性
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06-13
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