2
我有项目类POJO与任务类POJO休眠一多关系数据插入错误
@Entity
@Table(name = "task", catalog = "primavera")
public class Task implements java.io.Serializable {
private Integer taskId;
private Integer depth;
private Double duration;
private String durationUnit;
private Date endDate;
private Integer parentId;
private Integer percentDone;
private Integer priority;
private Date startDate;
private Integer taskIndex;
private String taskName;
public Task() {
}
public Task(Integer depth, Double duration, String durationUnit,
Date endDate, Integer parentId, Integer percentDone,
Integer priority, Date startDate, Integer taskIndex,
String taskName) {
this.depth = depth;
this.duration = duration;
this.durationUnit = durationUnit;
this.endDate = endDate;
this.parentId = parentId;
this.percentDone = percentDone;
this.priority = priority;
this.startDate = startDate;
this.taskIndex = taskIndex;
this.taskName = taskName;
}
public Task(String string, Object object) {
// TODO Auto-generated constructor stub
}
@Id
@GeneratedValue
@Column(name = "task_id")
public Integer getTaskId() {
return this.taskId;
}
public void setTaskId(Integer taskId) {
this.taskId = taskId;
}
@Column(name = "depth")
public Integer getDepth() {
return this.depth;
}
public void setDepth(Integer depth) {
this.depth = depth;
}
@Column(name = "duration", precision = 22, scale = 0)
public Double getDuration() {
return this.duration;
}
public void setDuration(Double duration) {
this.duration = duration;
}
@Column(name = "durationUnit")
public String getDurationUnit() {
return this.durationUnit;
}
public void setDurationUnit(String durationUnit) {
this.durationUnit = durationUnit;
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "endDate", length = 19)
public Date getEndDate() {
return this.endDate;
}
public void setEndDate(Date endDate) {
this.endDate = endDate;
}
@Column(name = "parentId")
public Integer getParentId() {
return this.parentId;
}
public void setParentId(Integer parentId) {
this.parentId = parentId;
}
@Column(name = "percentDone")
public Integer getPercentDone() {
return this.percentDone;
}
public void setPercentDone(Integer percentDone) {
this.percentDone = percentDone;
}
@Column(name = "priority")
public Integer getPriority() {
return this.priority;
}
public void setPriority(Integer priority) {
this.priority = priority;
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "startDate", length = 19)
public Date getStartDate() {
return this.startDate;
}
public void setStartDate(Date startDate) {
this.startDate = startDate;
}
@Column(name = "taskIndex")
public Integer getTaskIndex() {
return this.taskIndex;
}
public void setTaskIndex(Integer taskIndex) {
this.taskIndex = taskIndex;
}
@Column(name = "taskName")
public String getTaskName() {
return this.taskName;
}
public void setTaskName(String taskName) {
this.taskName = taskName;
}
}
我想通过下面的数据分配给我的POJO有关系
@Entity
@Table(name = "project", catalog = "primavera")
public class Project implements java.io.Serializable {
private Integer projectId;
private Date endDate;
private String projectDesc;
private String projectName;
private String projectTitle;
private Date startDate;
private Set<Task> tasks = new HashSet<Task>(0);
public Project() {
}
public Project(Date endDate, String projectDesc, String projectName,
String projectTitle, Date startDate, Set<Task> tasks) {
this.endDate = endDate;
this.projectDesc = projectDesc;
this.projectName = projectName;
this.projectTitle = projectTitle;
this.startDate = startDate;
this.tasks = tasks;
}
@Id
@GeneratedValue
@Column(name = "project_id")
public Integer getProjectId() {
return this.projectId;
}
public void setProjectId(Integer projectId) {
this.projectId = projectId;
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "endDate", length = 19)
public Date getEndDate() {
return this.endDate;
}
public void setEndDate(Date endDate) {
this.endDate = endDate;
}
@Column(name = "projectDesc")
public String getProjectDesc() {
return this.projectDesc;
}
public void setProjectDesc(String projectDesc) {
this.projectDesc = projectDesc;
}
@Column(name = "projectName")
public String getProjectName() {
return this.projectName;
}
public void setProjectName(String projectName) {
this.projectName = projectName;
}
@Column(name = "projectTitle")
public String getProjectTitle() {
return this.projectTitle;
}
public void setProjectTitle(String projectTitle) {
this.projectTitle = projectTitle;
}
@Temporal(TemporalType.TIMESTAMP)
@Column(name = "startDate", length = 19)
public Date getStartDate() {
return this.startDate;
}
public void setStartDate(Date startDate) {
this.startDate = startDate;
}
@OneToMany(cascade = CascadeType.ALL)
@JoinTable(name = "project_task", joinColumns = { @JoinColumn(name = "project_id") }, inverseJoinColumns = { @JoinColumn(name = "task_id") })
public Set<Task> getTasks() {
return this.tasks;
}
public void setTasks(Set<Task> tasks) {
this.tasks = tasks;
}
}
使用JSON
Set<Task> taskdata = new HashSet<Task>();
taskdata.add(new Task(null,null,null,endD1,null,null,null,startD1,null,null));
jsonObject.put("projectTitle", jsonObject.getString("title"));
jsonObject.put("projectName", jsonObject.getString("name"));
jsonObject.put("projectDesc", jsonObject.getString("description").replace("\u200b", ""));
jsonObject.put("startDate", startD);
jsonObject.put("endDate", endD);
jsonObject.put("tasks", taskdata);
Project project = (Project) JSONObject.toBean(jsonObject, Project.class);
代码，但它并没有看起来是，即使我传递个工作e将作为taskdata也是我收到错误，如
35802 [HTTP-8085-4] ERROR org.hibernate.property.BasicPropertyAccessor - 抛出：IllegalArgumentException类：com.kintu.projectmgt.model.Task，getter方法属性：taskId
请帮我找到阻止我的数据完全插入数据库的问题。
检查这个答案，可能是一个休眠的bug：http://stackoverflow.com/questions/3631349/how-do-i-cure-the-cause-of-hibernate-exception-illegalargumentexception-occurre。尝试设置'hibernate.cache.use_structured_entries = true' – fasseg 2012-01-27 08:05:02
不是一个解决方案仍然是一样的错误。但还有一件事是这是我正在使用JSON将数据分配给与Task类有关的Project类的正确方法？还是我必须使用其他技术来插入完全具有一对多关系的数据。 – 2012-01-27 08:27:16
它应该没问题，但你可以很容易地调试，并检查是否所有必要的字段已经在'JSONObject.toBean（）' – fasseg 2012-01-27 08:31:47