Hibernate的cascade属性 特别是 cascadeType.all的 作用

最新推荐文章于 2025-05-15 06:30:00 发布
转载 最新推荐文章于 2025-05-15 06:30:00 发布 · 729 阅读 · 1
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#hibernate

本文解析了JPA中CascadeType.ALL的实际含义及其与Hibernate级联操作的区别，探讨了共享主键OneToOne关系下标识符的生成问题，并介绍了如何在OneToMany关系中实现子元素的级联删除。

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1.JPA中的CascadeType.ALL并不等于{CascadeType.PESIST,CascadeType.REMOVE,CascadeType.MERGE,CascadeType.REFRESH}

 

在Hibernate中调用session.save() or session.update()并不能触发 {CascadeType.PESIST,CascadeType.REMOVE,CascadeType.MERGE,CascadeType.REFRESH} 的级联操作，而能触发CascadeType.ALL的级联。如不希望用CascadeType.ALL，需要使用Hibernate自身对 cascade的注解 @Cascade(value=org.hibernate.annotations.CascadeType.SAVE_UPDATE)

 

2.共享主键的OneToOne方式不能通过cascade来自动生成标识符 ，即使声明了@GenericGenerator(name="foreign_key",strategy="foreign",parameters={@Parameter(name="property",value="person")})


<p style="margin-top: 0px; margin-bottom: 10px; padding-top: 0px; padding-bottom: 0px;"><span class="lit" style="color: rgb(0, 102, 102);">@Entity</span>
<span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">class</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Person</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">implements</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Serializable</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span>
<span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="lit" style="color: rgb(0, 102, 102);">@Id</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="lit" style="color: rgb(0, 102, 102);">@GeneratedValue</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">generator </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="str" style="color: rgb(0, 136, 0);">"g_id"</span><span class="pun" style="color: rgb(102, 102, 0);">)</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">String</span><span class="pln" style="color: rgb(0, 0, 0);"> getId</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span>
<span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">return</span><span class="pln" style="color: rgb(0, 0, 0);"> id</span><span class="pun" style="color: rgb(102, 102, 0);">;</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span>
<span class="pln" style="color: rgb(0, 0, 0);">         </span><span class="lit" style="color: rgb(0, 102, 102);">@OneToOne</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">cascade </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">CascadeType</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">PERSIST </span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="typ" style="color: rgb(102, 0, 102);">CascadeType</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">ALL</span><span class="pun" style="color: rgb(102, 102, 0);">})</span>
<span class="pln" style="color: rgb(0, 0, 0);">         </span><span class="lit" style="color: rgb(0, 102, 102);">@JoinColumn</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">name </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="str" style="color: rgb(0, 136, 0);">"profile_id"</span><span class="pun" style="color: rgb(102, 102, 0);">)</span>
<span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="lit" style="color: rgb(0, 102, 102);">@PrimaryKeyJoinColumn</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">name</span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="str" style="color: rgb(0, 136, 0);">"id"</span><span class="pun" style="color: rgb(102, 102, 0);">)</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Profile</span><span class="pln" style="color: rgb(0, 0, 0);"> getProfile</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span>
<span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">return</span><span class="pln" style="color: rgb(0, 0, 0);"> profile</span><span class="pun" style="color: rgb(102, 102, 0);">;</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span>
<span class="pun" style="color: rgb(102, 102, 0);">}</span>

<span class="lit" style="color: rgb(0, 102, 102);">@Entity</span>
<span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">class</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Profile</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">implements</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Serializable</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span>

<span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="lit" style="color: rgb(0, 102, 102);">@Id</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="lit" style="color: rgb(0, 102, 102);">@GenericGenerator</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">name </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="str" style="color: rgb(0, 136, 0);">"foreign_key"</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);"> strategy </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="str" style="color: rgb(0, 136, 0);">"foreign"</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);"> parameters </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="lit" style="color: rgb(0, 102, 102);">@Parameter</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">name </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="str" style="color: rgb(0, 136, 0);">"property"</span><span class="pun" style="color: rgb(102, 102, 0);">,</span><span class="pln" style="color: rgb(0, 0, 0);"> value </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="str" style="color: rgb(0, 136, 0);">"person"</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">})</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="lit" style="color: rgb(0, 102, 102);">@GeneratedValue</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">generator </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="str" style="color: rgb(0, 136, 0);">"foreign_key"</span><span class="pun" style="color: rgb(102, 102, 0);">)</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">String</span><span class="pln" style="color: rgb(0, 0, 0);"> getId</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span>
<span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">return</span><span class="pln" style="color: rgb(0, 0, 0);"> id</span><span class="pun" style="color: rgb(102, 102, 0);">;</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span>

<span class="pln" style="color: rgb(0, 0, 0);">        </span><span class="lit" style="color: rgb(0, 102, 102);">@OneToOne</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="pln" style="color: rgb(0, 0, 0);">mappedBy </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="str" style="color: rgb(0, 136, 0);">"profile"</span><span class="pun" style="color: rgb(102, 102, 0);">)</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="typ" style="color: rgb(102, 0, 102);">Person</span><span class="pln" style="color: rgb(0, 0, 0);"> getPerson</span><span class="pun" style="color: rgb(102, 102, 0);">()</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span>
<span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">return</span><span class="pln" style="color: rgb(0, 0, 0);"> person</span><span class="pun" style="color: rgb(102, 102, 0);">;</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span>

<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">public</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="kwd" style="color: rgb(0, 0, 136);">void</span><span class="pln" style="color: rgb(0, 0, 0);"> setPerson</span><span class="pun" style="color: rgb(102, 102, 0);">(</span><span class="typ" style="color: rgb(102, 0, 102);">Person</span><span class="pln" style="color: rgb(0, 0, 0);"> person</span><span class="pun" style="color: rgb(102, 102, 0);">)</span><span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">{</span>
<span class="pln" style="color: rgb(0, 0, 0);">  </span><span class="kwd" style="color: rgb(0, 0, 136);">this</span><span class="pun" style="color: rgb(102, 102, 0);">.</span><span class="pln" style="color: rgb(0, 0, 0);">person </span><span class="pun" style="color: rgb(102, 102, 0);">=</span><span class="pln" style="color: rgb(0, 0, 0);"> person</span><span class="pun" style="color: rgb(102, 102, 0);">;</span>
<span class="pln" style="color: rgb(0, 0, 0);"> </span><span class="pun" style="color: rgb(102, 102, 0);">}</span>
<span class="pun" style="color: rgb(102, 102, 0);">}</span>
</p>

3.delete-orphan只应用在OneToMany中，能级联删除Many集合中的子元素。

   NOTE:JPA并不支持delete-orphan，但并不明白hibernate reference中为什么可以在OneToMany中添加属性orphanRemoval=true的属性。事实上，要用hibernate独有的注解 @Cascade(value=@CascadeType.DELETE_ORPHAN)来达到此目的。


--------------------------------------------------------------------------------

cascade属性的可能值有     
all: 所有情况下均进行关联操作，即save-update和delete。     
none: 所有情况下均不进行关联操作。这是默认值。      
save-update: 在执行save/update/saveOrUpdate时进行关联操作。      
delete: 在执行delete 时进行关联操作。      
all-delete-orphan: 当一个节点在对象图中成为孤儿节点时，删除该节点。
比如在一个一对多的关系中，Student包含多个book，当在对象关系中删除一个book时，
此book即成为孤儿节点。
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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 com.fasterxml.jackson.annotation.JsonIgnore; import com.fasterxml.jackson.annotation.JsonIgnoreProperties; /** * 板材材质 * @author Administrator * */ @Entity @Table(name="caizhi") @JsonIgnoreProperties({"hibernateLazyInitializer", "handler"}) public class Caizhi { @Id private int id ; private String name; @OneToMany(mappedBy="caizhi") @JsonIgnore private List<Bancai> bancais; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public String toString() { return "{id:" + id + ", name:" + name + "}"; } public Caizhi(int id, String name) { super(); this.id = id; this.name = name; } 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); } } 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 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; @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private List<Dingdan_chanpin> dingdians; private String bianhao; @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private List<Chanpin_zujian> zujians; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public List<Dingdan_chanpin> getDingdians() { return dingdians; } public void setDingdians(List<Dingdan_chanpin> dingdians) { this.dingdians = dingdians; } 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.dingdians = 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.Entity; import javax.persistence.FetchType; import javax.persistence.Id; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; import javax.persistence.OneToOne; /** * 产品组件关联类 * @author Administrator * */ @Entity public class Chanpin_zujian { @Id private Integer id; @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private Chanpin chanpins; @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private Zujian zujian; @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private Bancai bancai; private Double one_howmany; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public Chanpin getChanpins() { return chanpins; } public void setChanpins(Chanpin chanpins) { this.chanpins = chanpins; } 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 = "numder") }) public class Dingdan { @Id private Integer id; //订单号 private String number; @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private List<Dingdan_chanpin> dingdan_chanpins; @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private List<Dingdan_chanpin_zujian> dingdan_chanpins_zujians; @ManyToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private List<Chanpin> chanpins; 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<Chanpin> getChanpins() { return chanpins; } public void setChanpins(List<Chanpin> chanpins) { this.chanpins = chanpins; } 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.ManyToOne; /** * 订单和产品关联 * @author Administrator * */ @Entity public class Dingdan_chanpin { @Id private Integer id; //产品信息 @ManyToOne (cascade = CascadeType.ALL, fetch = FetchType.LAZY) private Dingdan dingdan; //产品数量 @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private Chanpin chanpin; 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.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; //订单 @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private Dingdan dingdan; //板材 @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private Bancai bancai; //产品组件 @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY) private Chanpin_zujian zujians; //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 getZujians() { return zujians; } public void setZujians(Chanpin_zujian zujians) { this.zujians = zujians; } 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; @Entity public class Jinhuo { @Id private Integer id; private Dingdan dingdan; private Chanpin chanpin; private Zujian zujian; private Bancai bancai; private Integer shuliang; private Date date; 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 { @Id private int id; private String name; /** * 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 Mupi(int id, String name, List<Bancai> bancaisForMupi1, List<Bancai> bancaisForMupi2) { super(); this.id = id; this.name = name; this.bancaisForMupi1 = bancaisForMupi1; this.bancaisForMupi2 = 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; } @Override public String toString() { return "{id:" + id + ", name:" + name + "}"; } public int 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 Mupi(int id, String name) { super(); this.id = id; this.name = name; } 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.Entity; import javax.persistence.Id; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; @Entity public class Zujian { @Id private Integer id; private String name; @OneToMany private List<Chanpin_zujian> chanpins; public Zujian(Integer id, String name, List<Chanpin_zujian> chanpins) { super(); this.id = id; this.name = name; this.chanpins = chanpins; } public List<Chanpin_zujian> getChanpins() { return chanpins; } public void setChanpins(List<Chanpin_zujian> chanpins) { this.chanpins = chanpins; } 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; } } 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(); } } 关联注解如何写
最新发布
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