我不知道为什么我在这里遇到问题，但是当我使用带有这些对象的CrudRepository保存时，我得到了SerializationException（没有进一步的信息）。有人可以看看我的对象，并让我了解他们为什么不能序列化？我的pom.xml也是最后附加的，以防万一。我正在使用Postgres数据库。
编辑：数据库和现在 - 表已创建，但对象未创建行。
实际的CrudRepository接口：
public interface AccountRepository extends CrudRepository<ZanyDishAccount, String> {}
ZanyDishAccount实体：
@Entity
public class ZanyDishAccount {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id; // internal id of the customer account for a Zany Dish subscription
private String status;
@OneToOne(cascade=CascadeType.ALL, fetch = FetchType.EAGER)
@JoinColumn(name = "company_id")
private Company company;
@OneToOne(cascade=CascadeType.ALL, fetch = FetchType.EAGER)
@JoinColumn(name = "order_id")
private Order order;
public ZanyDishAccount() {}
public ZanyDishAccount(Company company, Order order) {
this.company = company;
this.order = order;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Company getCompany() {
return company;
}
public void setCompany(Company company) {
this.company = company;
}
public Order getOrder() {
return order;
}
public void setOrder(Order order) {
this.order = order;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
@Override
public String toString()
{
return "ClassPojo [id = "+id+ ", company = " + company + ", status = " + status + "]";
}
}
公司实体：
@Entity
public class Company {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
Long id;
private String phoneNumber;
private String website;
private String name;
private String uuid;
private String country;
public Company() {}
public Company(String phoneNumber, String website, String name, String uuid, String country) {
this.phoneNumber = phoneNumber;
this.website = website;
this.uuid = uuid;
this.country = country;
}
public String getPhoneNumber ()
{
return phoneNumber;
}
public void setPhoneNumber (String phoneNumber)
{
this.phoneNumber = phoneNumber;
}
public String getWebsite ()
{
return website;
}
public void setWebsite (String website)
{
this.website = website;
}
public String getName ()
{
return name;
}
public void setName (String name)
{
this.name = name;
}
public String getUuid ()
{
return uuid;
}
public void setUuid (String uuid)
{
this.uuid = uuid;
}
public String getCountry ()
{
return country;
}
public void setCountry (String country)
{
this.country = country;
}
@Override
public String toString()
{
return "ClassPojo [phoneNumber = "+phoneNumber+", website = "+website+", name = "+name+", uuid = "+uuid+", country = "+country+"]";
}
}
订单实体：
@Entity
@Table(name = "_order")
public class Order {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
Long id;
private String pricingDuration;
private Items[] items;
private String editionCode;
public Order() {}
public Order(String pricingDuration, Items[] items, String editionCode) {
this.pricingDuration = pricingDuration;
this.items = items;
this.editionCode = editionCode;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getPricingDuration ()
{
return pricingDuration;
}
public void setPricingDuration (String pricingDuration)
{
this.pricingDuration = pricingDuration;
}
public Items[] getItems ()
{
return items;
}
public void setItems (Items[] items)
{
this.items = items;
}
public String getEditionCode ()
{
return editionCode;
}
public void setEditionCode (String editionCode)
{
this.editionCode = editionCode;
}
@Override
public String toString()
{
return "ClassPojo [pricingDuration = "+pricingDuration+", items = "+items+", editionCode = "+editionCode+"]";
}
}
感谢您的帮助！
麦克
答案 0 :(得分：1)
我将在Spring的文档中查看最基本方法的这一部分：Initialize a database using Hibernate。例如， on(dom.byId("uploadForm"), "change", function (event) {
var fileName = event.target.value.toLowerCase();
if (sniff("ie")) { //filename is full path in IE so extract the file name
var arr = fileName.split("\\");
fileName = arr[arr.length - 1];
}
if (fileName.indexOf(".zip") !== -1) {//is file a zip - if not notify user
generateFeatureCollection(fileName);
}
else {
dom.byId('upload-status').innerHTML = '<p style="color:red">Add shapefile as .zip file</p>';
}
});
function generateFeatureCollection (fileName) {
var name = fileName.split(".");
//Chrome and IE add c:\fakepath to the value - we need to remove it
//See this link for more info: http://davidwalsh.name/fakepath
name = name[0].replace("c:\\fakepath\\", "");
dom.byId('upload-status').innerHTML = '<b>Loading… </b>' + name;
//Define the input params for generate see the rest doc for details
//http://www.arcgis.com/apidocs/rest/index.html?generate.html
var params = {
'name': name,
'targetSR': map.spatialReference,
'maxRecordCount': 1000,
'enforceInputFileSizeLimit': true,
'enforceOutputJsonSizeLimit': true
};
//generalize features for display Here we generalize at 1:40,000 which is approx 10 meters
//This should work well when using web mercator.
var extent = scaleUtils.getExtentForScale(map, 40000);
var resolution = extent.getWidth() / map.width;
params.generalize = true;
params.maxAllowableOffset = resolution;
params.reducePrecision = true;
params.numberOfDigitsAfterDecimal = 0;
var myContent = {
'filetype': 'shapefile',
'publishParameters': JSON.stringify(params),
'f': 'json',
'callback.html': 'textarea'
};
//use the rest generate operation to generate a feature collection from the zipped shapefile
request({
url: portalUrl + '/sharing/rest/content/features/generate',
content: myContent,
form: dom.byId('uploadForm'),
handleAs: 'json',
load: lang.hitch(this, function (response) {
if (response.error) {
errorHandler(response.error);
return;
}
var layerName = response.featureCollection.layers[0].layerDefinition.name;
dom.byId('upload-status').innerHTML = '<b>Loaded: </b>' + layerName;
addShapefileToMap(response.featureCollection);
}),
error: lang.hitch(this, errorHandler)
});
}
将在每次运行应用程序时删除并重新创建表。初始开发工作简单易行。更强大的是利用像Flyway or Liquibase这样的东西。
因此，如果没有日志，并且没有创建表，那么缺少持久层将是假定的罪魁祸首。也就是说，当您拥有表和数据时，如果您没有所有相关表的存储库，则最终会出现StackOverflow错误（序列化变为循环）。为此，您可以使用@JsonBackReference（孩子）和@JsonManagedReference（父母）。我成功地只为孩子使用spring.jpa.hibernate.ddl-auto: create-drop。
我不确定Item.class是什么样的，但这看起来像是我错过了第一轮的进攻配置。
将@JsonBackReference更改为private Items[] items;。用@ElementCollection注释。
使用@Embeddable注释Item.class。