Java 如何将数据传递到外键,同时使用postman将数据传递为null?
我试图用外键传递数据,但得到的是空值。请参见下面我的代码: 这是pojo类的功能:Java 如何将数据传递到外键,同时使用postman将数据传递为null?,java,spring-boot,orm,mapping,one-to-many,Java,Spring Boot,Orm,Mapping,One To Many,我试图用外键传递数据,但得到的是空值。请参见下面我的代码: 这是pojo类的功能: @Data @AllArgsConstructor @NoArgsConstructor @ApiModel(value = "Feature", description = "This class is used to specify the Feature Property") @Entity public class Feature { @ApiModelProperty(notes = "uniq
@Data
@AllArgsConstructor
@NoArgsConstructor
@ApiModel(value = "Feature", description = "This class is used to specify the Feature Property")
@Entity
public class Feature {
@ApiModelProperty(notes = "unique feature id")
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long featureId;
@NotNull
@ApiModelProperty(notes = " feature name will define name of the feature")
@Size(max = 50)
private String name;
@NotEmpty(message = "feature version should never be empty")
@Size(max = 20)
@ApiModelProperty(notes = "feature version will define version of the feature")
@Column(unique = true)
private String version;
@NotBlank
@Size(max = 500)
@ApiModelProperty(notes = "feature description will describe the feature")
private String description;
@ManyToOne
@JoinColumn(name = "plan_id")
private Plan plan;
}
这就是波乔的计划
@Data
@AllArgsConstructor
@NoArgsConstructor
@ApiModel(value = "PlanData", description = "Plan is a pojo class under plan management")
@Entity
public class Plan {
@ApiModelProperty(notes = "unique plan id")
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "Plan_Id")
private Long planId;
@ApiModelProperty(notes = "A plan name")
private String planName;
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd-MM-yyyy")
@DateTimeFormat
@ApiModelProperty(notes = "plan start date will defines from what date the plan is active ")
private Date planStartDate;
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd-MM-yyyy")
@DateTimeFormat
@ApiModelProperty(notes = "plan end date will define till what date the plan will active ")
private Date planEndDate;
@ApiModelProperty(notes = "planDescription defines about the plan in detail")
private String planDescription;
@ApiModelProperty(notes = "plan version specifies version sepecific knowledge")
private String planVersion;
@ApiModelProperty(notes = "planStatus defines the active/deactive status of plan")
@JsonProperty
@Column(nullable = false, columnDefinition = "BOOLEAN")
private Boolean planStatus = true;
@OneToMany(mappedBy = "plan", cascade = CascadeType.ALL)
private Set<Feature> features=new HashSet<Feature>();;
@OneToOne
@JoinColumn(name = "templateId")
@ApiModelProperty(notes = "This property is mainly use to bind with the template")
private Template template;
@OneToOne
@JoinColumn(name = "termsId")
@ApiModelProperty(notes = "This property is mainly use to bind with the terms")
private TermsAndConditions terms;
我在所有外键字段中得到空值
{
"planId": 3,
"planName": "bnvn",
"planStartDate": "2003-09-09T00:00:00.000+0000",
"planEndDate": "2003-09-09T00:00:00.000+0000",
"planDescription": "hvxncbvnc jfbvfd nbhnsdf cbc",
"planVersion": "cvnm mxcnvbnc xncv",
"planStatus": true,
"features": [],
"template": null,
"terms": null
}
这是dto的计划
@Data
public class PlanDTO {
private Long planId;
private String planName;
private Date planStartDate;
private Date planEndDate;
private String planDescription;
private String planVersion;
private Boolean planStatus;
private Set<Feature> features = new HashSet<Feature>();
private Template template;
private TermsAndConditions terms;
public PlanDTO() {
}
public PlanDTO(Long planId, String planName, Date planStartDate, Date planEndDate, String planDescription,
String planVersion, Boolean planStatus, Set<Feature> features, Template template,
TermsAndConditions terms) {
super();
this.planId = planId;
this.planName = planName;
this.planStartDate = planStartDate;
this.planEndDate = planEndDate;
this.planDescription = planDescription;
this.planVersion = planVersion;
this.planStatus = planStatus;
this.features = features;
this.template = template;
this.terms = terms;
}
}
这是PlanImpl类
@Service
public class PlanImpl {
private static final Logger logger = LoggerFactory.getLogger(PlanImpl.class);
@Autowired
private PlanRepo planRepo;
@Autowired
private PlanMapper planMapper;
/**
* createPlan will create a plan and will store it in repository
*
* @param plan
* @return
*/
public PlanDTO createPlan(PlanDTO planDTO) {
Plan plan = planMapper.toPlan(planDTO);
Plan planData = planRepo.save(plan);
PlanDTO plans = planMapper.toPlanDTO(planData);
return plans;
}
/**
* update plan will update a plan using plan id and store it in database
*
* @param planId
* @param plan
*/
public PlanDTO updatePlan(Long planId, PlanDTO planDTO) {
Plan plan = planMapper.toPlan(planDTO);
Plan updatePlan;
if (planRepo.findById(planId) == null) {
throw new NullPointerException();
} else {
plan.setPlanId(planId);
updatePlan = planRepo.getOne(plan.getPlanId());
updatePlan.setPlanName(plan.getPlanName());
updatePlan.setPlanStartDate(plan.getPlanStartDate());
updatePlan.setPlanEndDate(plan.getPlanEndDate());
updatePlan.setPlanDescription(plan.getPlanDescription());
updatePlan.setPlanVersion(plan.getPlanVersion());
updatePlan.setPlanStatus(plan.getPlanStatus());
Plan planUpdateData = planRepo.save(updatePlan);
PlanDTO Plans = planMapper.toPlanDTO(planUpdateData);
return Plans;
}
}
我想显示一个具有多个功能的计划,但它返回null。
谢谢大家! 您需要将功能和模板添加到计划中。大概是这样的:
public class Plan {
...
public void addFeature(Feature feature) {
this.features.add(feature);
feature.setPlan(this);
}
public void setTemplate(Template template) {
this.template = template;
template.setPlan(this);
}
}
添加后,只需在保存计划之前调用addFeature和模板setter。您甚至可以调整它以一次保存所有功能
这里有一个很好的关于如何映射@OneToMany和@ManyToMany的源代码
和
您需要将功能和模板添加到计划中。大概是这样的:
public class Plan {
...
public void addFeature(Feature feature) {
this.features.add(feature);
feature.setPlan(this);
}
public void setTemplate(Template template) {
this.template = template;
template.setPlan(this);
}
}
添加后,只需在保存计划之前调用addFeature和模板setter。您甚至可以调整它以一次保存所有功能
这里有一个很好的关于如何映射@OneToMany和@ManyToMany的源代码
和
您还没有发布DOT的代码。您还没有发布planImpl.updatePlan()的代码。所以我们无法提供帮助。@JBNizet我已经添加了planImpl类,感谢您的响应。在JSON中,您有(例如)
“功能”:[{“planId”:1}]
。此JSON映射到PlanDTO。PlanDTO确实有一个名为features
的属性。这是一套。但是功能中没有planId
属性。所以Jackson不能用planId:1做任何事情:它可能在哪里存储这些信息?不要在DTO中使用实体。根据您真正应该收到的内容,将DTO设计为在您的服务中用作参数。请检查您的数据库中是否有计划和功能、模板等之间的映射数据。@gnanajeyam95映射列可用,但具有空值。您尚未发布DOT代码。您还没有发布planImpl.updatePlan()的代码。所以我们无法提供帮助。@JBNizet我已经添加了planImpl类,感谢您的响应。在JSON中,您有(例如)“功能”:[{“planId”:1}]
。此JSON映射到PlanDTO。PlanDTO确实有一个名为features
的属性。这是一套。但是功能中没有planId
属性。所以Jackson不能用planId:1做任何事情:它可能在哪里存储这些信息?不要在DTO中使用实体。根据您真正应该收到的内容,将DTO设计为在服务中用作参数。请检查数据库中是否有可用的计划与功能、模板等之间的映射数据。@gnanajeyam95映射列可用,但具有空值。此```方法setPlan(plan)存在问题类型集“”的未定义方法setPlan(Plan)对于类型集“”的未定义方法setPlan(Plan)存在问题```
@Data
public class FeatureDTO {
private Long featureId;
private String name;
private String version;
private String Description;
private Plan plan;
public FeatureDTO() {
}
public FeatureDTO(Long featureId, String name, String version, String description, Plan plan) {
super();
this.featureId = featureId;
this.name = name;
this.version = version;
this.Description = description;
this.plan = plan;
}
}
@Service
public class PlanImpl {
private static final Logger logger = LoggerFactory.getLogger(PlanImpl.class);
@Autowired
private PlanRepo planRepo;
@Autowired
private PlanMapper planMapper;
/**
* createPlan will create a plan and will store it in repository
*
* @param plan
* @return
*/
public PlanDTO createPlan(PlanDTO planDTO) {
Plan plan = planMapper.toPlan(planDTO);
Plan planData = planRepo.save(plan);
PlanDTO plans = planMapper.toPlanDTO(planData);
return plans;
}
/**
* update plan will update a plan using plan id and store it in database
*
* @param planId
* @param plan
*/
public PlanDTO updatePlan(Long planId, PlanDTO planDTO) {
Plan plan = planMapper.toPlan(planDTO);
Plan updatePlan;
if (planRepo.findById(planId) == null) {
throw new NullPointerException();
} else {
plan.setPlanId(planId);
updatePlan = planRepo.getOne(plan.getPlanId());
updatePlan.setPlanName(plan.getPlanName());
updatePlan.setPlanStartDate(plan.getPlanStartDate());
updatePlan.setPlanEndDate(plan.getPlanEndDate());
updatePlan.setPlanDescription(plan.getPlanDescription());
updatePlan.setPlanVersion(plan.getPlanVersion());
updatePlan.setPlanStatus(plan.getPlanStatus());
Plan planUpdateData = planRepo.save(updatePlan);
PlanDTO Plans = planMapper.toPlanDTO(planUpdateData);
return Plans;
}
}
public class Plan {
...
public void addFeature(Feature feature) {
this.features.add(feature);
feature.setPlan(this);
}
public void setTemplate(Template template) {
this.template = template;
template.setPlan(this);
}
}