mappedBy跟JoinColumn/JoinTable .

a) 只有OneToOne,OneToMany,ManyToMany上才有mappedBy属性,ManyToOne不存在该属性;
b) mappedBy标签一定是定义在the owned side(被拥有方的),他指向the owning side(拥有方);
c) mappedBy的含义,应该理解为,拥有方能够自动维护 跟被拥有方的关系;
   当然,如果从被拥有方,通过手工强行来维护拥有方的关系也是可以做到的。

d) mappedBy跟JoinColumn/JoinTable总是处于互斥的一方,可以理解为正是由于拥有方的关联被拥有方的字段存在,拥有方才拥有了被 拥有方。mappedBy这方定义的JoinColumn/JoinTable总是失效的,不会建立对应的字段或者表

 

人跟身份证双向关联

在Person 里面定义的注解:

@OneToOne(cascade={CascadeType.ALL},optional=true)
public IDCard getIdCard() {
         return idCard;
}

在IDCard 里面定义的注释:

//这里的idCard表示Person里面的idCard成员变量

@OneToOne(cascade=CascadeType.ALL,mappedBy="idCard" , optional=false)

public Person getPerson() {
       return person;
}

多了一个mappedBy这个方法,它表示什么呢?它表示当前所在表和Person的关系是定义在Person里面的idCard这个成员上面的,它表示此表是一对一关系中的从表,也就是关系是在person表里面维护的 ,这一点很重要 . Person表是关系的维护者,owner side,有主导权,它有个外键指向IDCard。
我们也可以让主导权在IDCard上面,也就是让它产生一个指向Person的外键,这也是可以的,但是最好是让Person来维护整个关系,这样更符合我们正常的思维 .

我们也可以看到在Person里面IDCard是注释是optional=true,也就是说一个人是可以没有身份证的,但是一个身份证不可以没有人,所以在IDCard里面注释person的时候,optional就为false了,这样就可以防止一个空的身份证记录进数据库.


package com.teacher.service.Impl; import com.teacher.exception.ContentProcessingException; import com.teacher.exception.ResourceNotFoundException; import com.teacher.model.entity.Courseware; import com.teacher.repository.CoursewareRepository; import com.teacher.service.AiService; import com.teacher.service.ContentService; import com.teacher.util.DocumentParser; import com.teacher.util.FileUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.data.domain.Page; import org.springframework.data.domain.PageRequest; import org.springframework.data.domain.Pageable; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; import org.springframework.web.multipart.MultipartFile; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.UUID; @Service public class ContentServiceImpl implements ContentService { @Value("${app.upload.dir}") private String uploadDir; private final CoursewareRepository coursewareRepository; private final DocumentParser documentParser; private final AiService aiService; private final FileUtils fileUtils; @Autowired public ContentServiceImpl(CoursewareRepository coursewareRepository, DocumentParser documentParser, AiService aiService, FileUtils fileUtils) { this.coursewareRepository = coursewareRepository; this.documentParser = documentParser; this.aiService = aiService; this.fileUtils = fileUtils; } @Override @Transactional public Courseware uploadCourseware(MultipartFile file, String subject, String gradeLevel) { try { // 验证文件不为空 if (file.isEmpty()) { throw new IllegalArgumentException("上传文件不能为空"); } // 创建上传目录(如果不存在) Path uploadPath = Paths.get(uploadDir); if (!Files.exists(uploadPath)) { Files.createDirectories(uploadPath); } // 1. 保存文件到存储系统 String originalFilename = file.getOriginalFilename(); String fileExtension = fileUtils.getFileExtension(originalFilename); String uniqueFilename = UUID.randomUUID() + "." + fileExtension; Path filePath = uploadPath.resolve(uniqueFilename); file.transferTo(filePath); // 2. 创建课件记录 Courseware courseware = new Courseware(); courseware.setTitle(originalFilename); courseware.setSubject(subject); courseware.setGradeLevel(gradeLevel); courseware.setFilePath(filePath.toString()); courseware.setFileType(file.getContentType()); courseware.setFileSize(file.getSize()); // 3. 解析内容并提取元数据 String content = documentParser.parseDocument(file); courseware.setContent(content); // 4. 使用AI提取关键概念 List<String> keyConcepts = aiService.extractKnowledgePoints(content); courseware.setKeyConcepts(String.join(",", keyConcepts)); // 5. 设置版本信息(初始版本) courseware.setVersion(1); courseware.setRootId(null); // 初始版本没有根ID // 6. 保存到数据库 Courseware saved = coursewareRepository.save(courseware); // 7. 设置根ID(如果是第一个版本) if (saved.getRootId() == null) { saved.setRootId(saved.getId()); return coursewareRepository.save(saved); } return saved; } catch (IOException e) { throw new ContentProcessingException("文件上传失败: " + e.getMessage(), e); } } @Override public Courseware getCoursewareById(Long id) { return coursewareRepository.findById(id) .orElseThrow(() -> new ResourceNotFoundException("课件不存在,ID: " + id)); } @Override public Page<Courseware> searchCoursewares(String keyword, String subject, Pageable pageable) { if (keyword == null || keyword.isEmpty()) { return coursewareRepository.findBySubject(subject, pageable); } return coursewareRepository.searchByKeywordAndSubject(keyword, subject, pageable); } @Override @Transactional public void deleteCourseware(Long id) { Courseware courseware = getCoursewareById(id); // 删除物理文件(仅当文件存在时) if (courseware.getFilePath() != null) { fileUtils.deleteFile(courseware.getFilePath()); } // 删除数据库记录 coursewareRepository.deleteById(id); } @Override public String parseDocumentContent(Long coursewareId) { Courseware courseware = getCoursewareById(coursewareId); return courseware.getContent(); // 已解析的内容 } @Override public List<String> extractKeyConcepts(Long coursewareId) { Courseware courseware = getCoursewareById(coursewareId); if (courseware.getKeyConcepts() == null || courseware.getKeyConcepts().isEmpty()) { return Collections.emptyList(); } return List.of(courseware.getKeyConcepts().split(",")); } @Override public List<Courseware> recommendRelatedContent(Long coursewareId, int count) { Courseware source = getCoursewareById(coursewareId); // 检查关键概念是否为空 if (source.getKeyConcepts() == null || source.getKeyConcepts().isEmpty()) { return Collections.emptyList(); } // 基于关键概念和主题推荐相关课件 return coursewareRepository.findRelatedContent( source.getSubject(), source.getKeyConcepts(), source.getId(), PageRequest.of(0, count) ).getContent(); } @Override @Transactional public Courseware updateCourseware(Long id, MultipartFile file) { Courseware existing = getCoursewareById(id); try { // 1. 保存新文件 String originalFilename = file.getOriginalFilename(); String fileExtension = fileUtils.getFileExtension(originalFilename); String uniqueFilename = UUID.randomUUID() + "." + fileExtension; Path filePath = Paths.get(uploadDir, uniqueFilename); file.transferTo(filePath); // 2. 解析新内容 String content = documentParser.parseDocument(file); // 3. 更新关键概念 List<String> keyConcepts = aiService.extractKnowledgePoints(content); String keyConceptsStr = String.join(",", keyConcepts); // 4. 创建新版本记录 Courseware newVersion = new Courseware(); newVersion.setTitle(originalFilename); newVersion.setSubject(existing.getSubject()); newVersion.setGradeLevel(existing.getGradeLevel()); newVersion.setFilePath(filePath.toString()); newVersion.setFileType(file.getContentType()); newVersion.setFileSize(file.getSize()); newVersion.setContent(content); newVersion.setKeyConcepts(keyConceptsStr); // 5. 设置版本信息 newVersion.setVersion(existing.getVersion() + 1); newVersion.setPreviousVersionId(existing.getId()); newVersion.setRootId(existing.getRootId() != null ? existing.getRootId() : existing.getId()); // 6. 保存新版本 return coursewareRepository.save(newVersion); } catch (IOException e) { throw new ContentProcessingException("课件更新失败: " + e.getMessage(), e); } } @Override public List<Courseware> getCoursewareVersions(Long id) { Courseware current = getCoursewareById(id); Long rootId = current.getRootId() != null ? current.getRootId() : id; return coursewareRepository.findVersionsByRootId(rootId); } } 出现了无法解析 'Courseware' 中的方法 'setGradeLevel'无法解析 'Courseware' 中的方法 'setFilePath'无法解析 'Courseware' 中的方法 'setFileType'无法解析 'Courseware' 中的方法 'setFileSize'无法解析 'Courseware' 中的方法 'setKeyConcepts'无法解析 'Courseware' 中的方法 'setVersion'无法解析 'Courseware' 中的方法 'setRootId'无法解析 'Courseware' 中的方法 'getRootId' Courseware的代码如下package com.teacher.model.entity; import jakarta.persistence.*; import lombok.Getter; import lombok.Setter; import java.time.LocalDateTime; @Entity @Table(name = "courseware") @Getter @Setter public class Courseware { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @Column(nullable = false, length = 100) private String title; @Column(nullable = false, length = 50) private String subject; @Column(nullable = false, columnDefinition = "TEXT") private String content; @Column(name = "created_at", nullable = false, updatable = false) private LocalDateTime createdAt = LocalDateTime.now(); @Column(name = "updated_at") private LocalDateTime updatedAt; @Column(name = "is_active", nullable = false) private boolean active = true; // 关联知识点 @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "knowledge_point_id") private KnowledgePoint knowledgePoint; @PreUpdate protected void onUpdate() { this.updatedAt = LocalDateTime.now(); } } 请判断哪些方法是需要的,哪些是不需要的可以进行删除,请把修改后的代码给出来
最新发布
07-11
/* 文件路径: Bancai.java */ 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.GeneratedValue; import javax.persistence.GenerationType; 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") @JsonSerialize(using = FullEntitySerializer.class) @UniqueEntity( repositoryName = "bancai", fields = {"houdu", "caizhi", "mupi1", "mupi2"}, message = "板材组合已存在" ) public class Bancai extends EntityBasis { @ManyToOne( fetch = FetchType.LAZY) @JoinColumn(name = "caizhi_id") // private Caizhi caizhi; @ManyToOne( fetch = FetchType.LAZY) @JoinColumn(name = "mupi1_id") private Mupi mupi1; @ManyToOne( fetch = FetchType.LAZY) @JoinColumn(name = "mupi2_id") private Mupi mupi2; private Double houdu; @OneToOne( cascade = CascadeType.ALL, orphanRemoval = true, // 添加此配置 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 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(Integer id, Caizhi caizhi, Mupi mupi1, Mupi mupi2, Double houdu) { super( id); this.caizhi = caizhi; this.mupi1 = mupi1; this.mupi2 = mupi2; this.houdu = houdu; } public Bancai() { super(); } } ================================================================================ /* 文件路径: Caizhi.java */ 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.FullEntitySerializer; import com.kucun.data.entity.DTO.UniqueEntity; /** * 板材材质 * @author Administrator * */ @Entity @Table(name="caizhi", uniqueConstraints = { @UniqueConstraint(columnNames = "name") }) @UniqueEntity( repositoryName = "caizhi", fields = {"name"}, message = "材质已存在" ) @JsonSerialize(using = FullEntitySerializer.class) public class Caizhi extends EntityBasis{ @OneToMany(mappedBy="caizhi") private List<Bancai> bancai; private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } public List<Bancai> getBancai() { return bancai; } public void setBancai(List<Bancai> bancai) { this.bancai = bancai; } } ================================================================================ /* 文件路径: Chanpin_zujian.java */ package com.kucun.data.entity; import javax.persistence.CascadeType; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; 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.FullEntitySerializer; import com.kucun.data.entity.DTO.UniqueEntity; /** * 产品组件关联类 * @author Administrator * */ @Entity @Table(name="chanpin_zujian") @JsonSerialize(using = FullEntitySerializer.class) @UniqueEntity( repositoryName = "chanpin_zhujian", fields = { "chanpin", "zujian"}, message = "产品下也有该组件" ) public class Chanpin_zujian extends EntityBasis { // 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; //一张板材生产多少组件 private Double one_howmany; //生产多少组件 private Double zujianshu; public Double getZujianshu() { return zujianshu; } public void setZujianshu(Double zujianshu) { this.zujianshu = zujianshu; } 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 } } ================================================================================ /* 文件路径: Chanpin.java */ package com.kucun.data.entity; import java.util.ArrayList; import java.util.List; import javax.persistence.CascadeType; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; 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.*; /** * 产品类 * @author Administrator * */ @Entity @Table(name="chanpin", uniqueConstraints = { @UniqueConstraint(columnNames = "bianhao") }) @JsonSerialize(using = FullEntitySerializer.class) @UniqueEntity( repositoryName = "chanpin", fields = {"bianhao"}, message = "该产品已存在" ) public class Chanpin extends EntityBasis { // 关联订单产品 @OneToMany( mappedBy = "chanpin", cascade = CascadeType.ALL, fetch = FetchType.LAZY ) private List<Dingdan_chanpin> dingdan_chanpin=new ArrayList<>(); private String bianhao; @OneToMany( mappedBy = "chanpin", cascade = CascadeType.ALL, fetch = FetchType.LAZY, orphanRemoval = true ) private List<Chanpin_zujian> chanpin_zujian; public String getBianhao() { return bianhao; } public void setBianhao(String bianhao) { this.bianhao = bianhao; } public List<Dingdan_chanpin> getDingdan_chanpin() { return dingdan_chanpin; } public void setDingdan_chanpin(List<Dingdan_chanpin> dingdan_chanpin) { this.dingdan_chanpin = dingdan_chanpin; } public List<Chanpin_zujian> getChanpin_zujian() { return chanpin_zujian; } public void setChanpin_zujian(List<Chanpin_zujian> chanpin_zujian) { this.chanpin_zujian = chanpin_zujian; } } ================================================================================ /* 文件路径: Dingdan_bancai.java */ package com.kucun.data.entity; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.ManyToOne; import javax.persistence.Table; import javax.persistence.Transient; import com.fasterxml.jackson.annotation.JsonIgnore; import com.kucun.data.entity.DTO.UniqueEntity; /** * 订单订购记录, * @author Administrator * */ @Entity @Table(name="dingdan_bancai") @UniqueEntity( repositoryName = "dingdan_chanpin", fields = {"dingdan","chanpin","zujian","bancai"}, message = "订单下已有该产品" ) public class Dingdan_bancai extends EntityBasis{ //订单 @ManyToOne(optional=true) private Dingdan dingdan; //产品 @ManyToOne(optional=true) private Chanpin chanpin; //组件 @ManyToOne(optional=true) private Zujian zujian; //板材 @ManyToOne private Bancai bancai; private Integer shuliang; // 新增 transient 字段(不参与数据库存储) @Transient @JsonIgnore // 不参与序列化 private Integer currentUserId; // Getter 和 Setter public Integer getCurrentUserId() { return currentUserId; } public void setCurrentUserId(Integer currentUserId) { this.currentUserId = currentUserId; } 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; } } ================================================================================ /* 文件路径: Dingdan_chanpin.java */ package com.kucun.data.entity; import javax.persistence.CascadeType; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; 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.FullEntitySerializer; import com.kucun.data.entity.DTO.UniqueEntity; /** * 订单和产品关联 * @author Administrator * */ @Entity @Table(name="dingdan_chanpin") @UniqueEntity( repositoryName = "dingdan_chanpin", fields = {"dingdan","chanpin"}, message = "订单下已有该产品" ) @JsonSerialize(using = FullEntitySerializer.class) public class Dingdan_chanpin extends EntityBasis { //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 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; } } ================================================================================ /* 文件路径: Dingdan.java */ package com.kucun.data.entity; import java.util.ArrayList; 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.GeneratedValue; import javax.persistence.GenerationType; 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.FullEntitySerializer; import com.kucun.data.entity.DTO.UniqueEntity; /** * 订单 * @author Administrator * */ @Entity @Table(name="dingdan", uniqueConstraints = { @UniqueConstraint(columnNames = "number") }) @UniqueEntity( repositoryName = "dingdan", fields = {"numder"}, message = "该订单已存在" ) @JsonSerialize(using = FullEntitySerializer.class) public class Dingdan extends EntityBasis{ //订单号 private String number; private Date xiadan; private Date jiaohuo; @OneToMany( mappedBy = "dingdan", cascade = CascadeType.ALL, fetch = FetchType.LAZY, orphanRemoval = true ) private List<Dingdan_chanpin> dingdan_chanpin=new ArrayList<>(); 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> getDingdan_chanpin() { return dingdan_chanpin; } public void setDingdan_chanpin(List<Dingdan_chanpin> dingdan_chanpins) { this.dingdan_chanpin = dingdan_chanpins; } public String getNumber() { return number; } public void setNumber(String number) { this.number = number; } public Dingdan(Integer id, String number) { super(id); this.number = number; } public Dingdan() { super(); // TODO Auto-generated constructor stub } } ================================================================================ /* 文件路径: EntityBasis.java */ package com.kucun.data.entity; import java.util.Date; import javax.persistence.Column; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.MappedSuperclass; import javax.persistence.PrePersist; import javax.persistence.PreRemove; import javax.persistence.PreUpdate; import javax.persistence.Temporal; import javax.persistence.TemporalType; import org.hibernate.annotations.Where; @MappedSuperclass @Where(clause = "deleted = false") // 添加全局过滤条件 public abstract class EntityBasis implements EntityBasisId { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer id; @Column(name = "last_updated", nullable = false, columnDefinition = "DATETIME DEFAULT CURRENT_TIMESTAMP") @Temporal(TemporalType.TIMESTAMP) private Date lastUpdated = new Date(); @Column(name = "deleted", columnDefinition = "BOOLEAN DEFAULT FALSE") private Boolean deleted = false; @Column(name = "deleted_at") @Temporal(TemporalType.TIMESTAMP) private Date deletedAt; // Getters and Setters... public Boolean getDeleted() { return deleted; } public void setDeleted(Boolean deleted) { this.deleted = deleted; } public Date getDeletedAt() { return deletedAt; } public void setDeletedAt(Date deletedAt) { this.deletedAt = deletedAt; } // 更新回调方法 @PreRemove private void markAsDeleted() { this.deleted = true; this.deletedAt = new Date(); } // 自动更新时间戳的回调方法 @PrePersist @PreUpdate private void updateTimestamp() { this.lastUpdated = new Date(); } // Getters and Setters... public Date getLastUpdated() { return lastUpdated; } public void setLastUpdated(Date lastUpdated) { this.lastUpdated = lastUpdated; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public EntityBasis(Integer id) { super(); this.id = id; } public EntityBasis() { super(); // TODO Auto-generated constructor stub } } ================================================================================ /* 文件路径: EntityBasisId.java */ package com.kucun.data.entity; public interface EntityBasisId { Integer getId(); void setId(Integer id); } ================================================================================ /* 文件路径: Information.java */ 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, text, data); } public static Information NewFail(int i, String string) { // TODO Auto-generated method stub return new Information(i,string,null); } public static Information NewFail( String string) { // TODO Auto-generated method stub return new Information(400,string,null); } } ================================================================================ /* 文件路径: Jinhuo.java */ package com.kucun.data.entity; import java.util.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.ManyToOne; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.FullEntitySerializer; @Entity @JsonSerialize(using = FullEntitySerializer.class) public class Jinhuo extends EntityBasis{ @ManyToOne private Dingdan_bancai dingdan_bancai; private Integer shuliang; private Date date; @ManyToOne private User user; private String text=""; private Integer theTypeOfOperation; public Dingdan_bancai getDingdan_bancai() { return dingdan_bancai; } public void setDingdan_bancai(Dingdan_bancai dingdan_bancai) { this.dingdan_bancai = dingdan_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; } public Jinhuo(Integer id, Dingdan_bancai dingdan_bancai, Integer shuliang, Date date, User user) { super(id); this.dingdan_bancai = dingdan_bancai; this.shuliang = shuliang; this.date = date; this.user = user; } public Jinhuo() { super(); // TODO Auto-generated constructor stub } public String getText() { return text; } public void setText(String text) { this.text = text; } public Integer getTheTypeOfOperation() { return theTypeOfOperation; } public void setTheTypeOfOperation(Integer theTypeOfOperation) { this.theTypeOfOperation = theTypeOfOperation; } } ================================================================================ /* 文件路径: Kucun.java */ package com.kucun.data.entity; import java.util.List; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.ManyToOne; import javax.persistence.OneToOne; import javax.persistence.Table; import javax.persistence.UniqueConstraint; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.FullEntitySerializer; import com.kucun.data.entity.DTO.UniqueEntity; /** * 库存 * @author Administrator * */ @Entity @JsonSerialize(using = FullEntitySerializer.class) @Table(name="kucun", uniqueConstraints = { @UniqueConstraint(columnNames = "bancai_id") }) @UniqueEntity( repositoryName = "kucun", fields = {"bancai"}, message = "库存已存在" ) public class Kucun extends EntityBasis{ private Integer shuliang; @OneToOne(fetch = FetchType.LAZY) // 正确映射 Bancai 实体 @JoinColumn(name = "bancai_id", referencedColumnName = "id") private Bancai bancai; 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 Kucun(Integer id, Bancai bancai, Integer shuliang) { super(id); this.bancai = bancai; this.shuliang = shuliang; } public Kucun() { super(); // TODO Auto-generated constructor stub } } ================================================================================ /* 文件路径: Mupi.java */ package com.kucun.data.entity; import java.util.List; import javax.persistence.Column; 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 org.hibernate.annotations.Type; 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.FullEntitySerializer; import com.kucun.data.entity.DTO.UniqueEntity; /** * 木皮 * @author Administrator * */ @Entity @Table(name="mupi") @UniqueEntity( repositoryName = "mupi", fields = {"name", "you"}, message = "木皮已存在" ) @JsonSerialize(using = FullEntitySerializer.class) public class Mupi extends EntityBasis{ /** * 是否有油漆 */ @Column(name="you") @Type(type = "org.hibernate.type.BooleanType") private Boolean you; private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } // 添加 OneToMany 映射 @OneToMany(mappedBy = "mupi1") // 指向 Bancai 中的 mupi1 字段 private List<Bancai> bancaisForMupi1; @OneToMany(mappedBy = "mupi2") // 指向 Bancai 中的 mupi2 字段 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; } } ================================================================================ /* 文件路径: SimpleEntity.java */ 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 EntityBasisId{ @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... } ================================================================================ /* 文件路径: User.java */ 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; import com.fasterxml.jackson.databind.annotation.JsonSerialize; import com.kucun.data.entity.DTO.FullEntitySerializer; /** * 用户 * @author Administrator * */ @Entity @Table(name="user") @JsonSerialize(using = FullEntitySerializer.class) public class User extends EntityBasis{ /** * 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=0; /** * 权限 */ @Column(nullable=false) private int incumbency=0; public User() { super(); } public User(int id, String name, String andy, String pass) { super(id); this.name = name; this.andy = andy; this.pass = pass; } 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; } public int getIncumbency() { return incumbency; } public void setIncumbency(int incumbency) { this.incumbency = incumbency; } } ================================================================================ /* 文件路径: Zujian.java */ 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.FullEntitySerializer; @Entity @JsonSerialize(using = FullEntitySerializer.class) public class Zujian extends EntityBasis{ private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } // 反向关联到产品组件 @OneToMany( mappedBy = "zujian", cascade = CascadeType.ALL, fetch = FetchType.LAZY ) private List<Chanpin_zujian> chanping_zujian; public List<Chanpin_zujian> getChanping_zujian() { return chanping_zujian; } public void setChanping_zujian(List<Chanpin_zujian> chanping_zujian) { this.chanping_zujian = chanping_zujian; } } 生成实体类关系图,要简洁,属性全面,关系清晰,
07-05
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