我有一个集合作为其属性之一的实体。 该集合使用@ManyToMany注释进行映射，并且获取类型为lazy。 目标实体也有集合作为属性，一些是@OneToMany，一些是@ManyToMany。 当获取第一个实体时（通过entityManager.find（id）），它的集合属性被填充，此外集合的元素也被完全填充（即集合被填充），所以我得到许多规范化的对象。 据我所知，将属性描述为lazy fetched应该可以防止集合被填充。 我错了还是做错了什么？
谢谢。
实体（此处仅有两个实例）：
@Entity
@Table(name="buys")
@XStreamAlias("buy")
public class Buy implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
public enum AutoMode {AUTO, MANUAL};
public enum Bool {FALSE,TRUE};
public enum Frequency {FREQ1, FREQ2};
public enum Status {STATUS1, STATUS2};
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@XStreamAsAttribute
@Column(name = "id")
private Long id;
/*
@JoinColumn(name="agency_id")
@XStreamAlias("agencyId")
@ManyToOne(fetch = FetchType.LAZY, cascade = {CascadeType.PERSIST, CascadeType.MERGE})
private Agency agencyId;
*/
@Column(name = "agency_id")
@XStreamAlias("agencyId")
private long agencyId;
@Column(name = "auction_date")
@Temporal(TemporalType.DATE)
@XStreamAlias("auction")
private Date auctionDate;
@Column(name = "pre_auction_date")
@Temporal(TemporalType.DATE)
@XStreamAlias("pre-auction")
private Date preAuctionDate;
@Column(name = "send_feedback_auto_mode")
@XStreamAlias("auto-send")
@Enumerated(EnumType.ORDINAL)
private AutoMode sendFeedbackAutoMode;
@Column(name = "campaign_budget")
@XStreamAlias("budget")
private Integer budget;
@Column(name = "price_ceiling")
@XStreamAlias("price-ceiling")
@Min(value = 1, message = "Price ceiling should be greater then 0")
private Double priceCeiling;
/*
@ManyToOne( cascade = {CascadeType.PERSIST, CascadeType.MERGE})
@JoinColumn(name="campaign_id")
private Campaign campaign;
*/
@Column(name = "campaign_id")
@XStreamAlias("campaignId")
private long campaign;
@Column(name = "avg_bid_received")
@XStreamAlias("avgBigReceived")
private double avgBid;
@Column(name = "maximum_unique_users")
@XStreamAlias("maxUniqueUsers")
private int maxUniqueUsers;
@Column(name = "optimize_method")
@XStreamAlias("optimzeMethod")
private int optimzeMethod;
@Column(name = "frequency")
@XStreamAlias("frequency")
private int frequency;
@Column(name = "frequency_type")
@XStreamAlias("frequency_type")
@Enumerated(EnumType.ORDINAL)
private Frequency frequencyType;
@Column(name = "additional_info")
@XStreamAlias("additionalInfo")
private String additionalInfo;
@Column(name = "support_oob")
@XStreamAlias("oob")
@Enumerated(EnumType.ORDINAL)
private Bool supportOOB;
@Column(name = "support_in_banner")
@XStreamAlias("ib")
@Enumerated(EnumType.ORDINAL)
private Bool supportIB;
@Column(name = "status")
@XStreamAlias("status")
@Enumerated(EnumType.ORDINAL)
private Status status;
@Version
@Column(name = "version")
@XStreamAsAttribute
private Integer version;
@ManyToMany(fetch=FetchType.LAZY,cascade = { CascadeType.MERGE, CascadeType.PERSIST})
@JoinTable( name="buy_ad_sizes", joinColumns=@JoinColumn(name="buy_id"),inverseJoinColumns=@JoinColumn(name="ad_size_id"))
@XStreamAlias("adSizes")
private List<AdUnit> adSizes;
@ManyToMany(fetch=FetchType.LAZY,cascade = { CascadeType.MERGE, CascadeType.PERSIST})
@JoinTable( name="buy_profiles", joinColumns=@JoinColumn(name="buy_id"),inverseJoinColumns=@JoinColumn(name="profile_id"))
@XStreamAlias("profiles")
private List<Profile> profiles;
@JoinColumn(name="buy_id")
@OneToMany(fetch=FetchType.LAZY,cascade = { CascadeType.MERGE, CascadeType.PERSIST})
@XStreamAlias("mediaPlans")
private List<MediaPlan> mediaPlans;
@JoinColumn(name = "buy_id")
@OneToMany(fetch=FetchType.LAZY,cascade = { CascadeType.MERGE, CascadeType.PERSIST})
@XStreamAlias("publisherProposals")
private List<PublisherProposal> publisherProposals;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Integer getVersion() {
return version;
}
public void setVersion(Integer version) {
this.version = version;
}
public Date getAuctionDate() {
return auctionDate;
}
public void setAuctionDate(Date auctionDate) {
this.auctionDate = auctionDate;
}
public Date getPreAuctionDate() {
return preAuctionDate;
}
public void setPreAuctionDate(Date preAuctionDate) {
this.preAuctionDate = preAuctionDate;
}
public Integer getBudget() {
return budget;
}
public void setBudget(Integer budget) {
this.budget = budget;
}
public Double getPriceCeiling() {
return priceCeiling;
}
public void setPriceCeiling(Double priceCeiling) {
this.priceCeiling = priceCeiling;
}
public AutoMode getSendFeedbackAutoMode() {
return sendFeedbackAutoMode;
}
public void setSendFeedbackAutoMode(AutoMode sendFeedbackAutoMode) {
this.sendFeedbackAutoMode = sendFeedbackAutoMode;
}
public double getAvgBid() {
return avgBid;
}
public void setAvgBid(double avgBid) {
this.avgBid = avgBid;
}
public int getMaxUniqueUsers() {
return maxUniqueUsers;
}
public void setMaxUniqueUsers(int maxUniqueUsers) {
this.maxUniqueUsers = maxUniqueUsers;
}
public int getOptimzeMethod() {
return optimzeMethod;
}
public void setOptimzeMethod(int optimzeMethod) {
this.optimzeMethod = optimzeMethod;
}
public int getFrequency() {
return frequency;
}
public void setFrequency(int frequency) {
this.frequency = frequency;
}
public Frequency getFrequencyType() {
return frequencyType;
}
public void setFrequencyType(Frequency frequencyType) {
this.frequencyType = frequencyType;
}
public String getAdditionalInfo() {
return additionalInfo;
}
public void setAdditionalInfo(String additionalInfo) {
this.additionalInfo = additionalInfo;
}
public Bool getSupportOOB() {
return supportOOB;
}
public List<AdUnit> getAdSizes() {
return adSizes;
}
public void setAdSizes(List<AdUnit> adSizes) {
this.adSizes = adSizes;
}
public void setSupportOOB(Bool supportOOB) {
this.supportOOB = supportOOB;
}
public Bool getSupportIB() {
return supportIB;
}
public void setSupportIB(Bool supportIB) {
this.supportIB = supportIB;
}
public Status getStatus() {
return status;
}
public void setStatus(Status status) {
this.status = status;
}
public List<Profile> getProfiles() {
return profiles;
}
public void setProfiles(List<Profile> profiles) {
this.profiles = profiles;
}
public List<MediaPlan> getMediaPlans() {
return mediaPlans;
}
public void setMediaPlans(List<MediaPlan> mediaPlans) {
this.mediaPlans = mediaPlans;
}
public List<PublisherProposal> getPublisherProposals() {
return publisherProposals;
}
public void setPublisherProposals(List<PublisherProposal> publisherProposals) {
this.publisherProposals = publisherProposals;
}
public long getAgencyId() {
return agencyId;
}
public void setAgencyId(long agencyId) {
this.agencyId = agencyId;
}
public long getCampaign() {
return campaign;
}
public void setCampaign(long campaign) {
this.campaign = campaign;
}
}
第二个实体：
@Entity
@Table(name = "ad_units")
@XStreamAlias("adunit")
public class AdUnit {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
@XStreamAsAttribute
private Long id;
@Column(unique=true, nullable=false )
@XStreamAsAttribute
private String name;
@Column(name="full_name",nullable=false )
@XStreamAlias("full-name")
private String fullName;
@XStreamAlias("width")
private Integer width;
@XStreamAlias("height")
private Integer height;
@XStreamAlias("type")
private String type;
@ManyToMany(fetch = FetchType.LAZY, cascade = {CascadeType.PERSIST, CascadeType.MERGE}, mappedBy = "adSizes", targetEntity = Publisher.class)
private List<Publisher> publishers;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
public Integer getWidth() {
return width;
}
public void setWidth(Integer width) {
this.width = width;
}
public Integer getHeight() {
return height;
}
public void setHeight(Integer height) {
this.height = height;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public List<Publisher> getPublishers() {
return publishers;
}
public void setPublishers(List<Publisher> publishers) {
this.publishers = publishers;
}
}
返回的对象：
<buy id="1" version="0">
<agencyId>1</agencyId>
<auction class="sql-date">2010-09-25</auction>
<pre-auction class="sql-date">2010-09-25</pre-auction>
<auto-send>AUTO</auto-send>
<budget>1000</budget>
<price-ceiling>5.0</price-ceiling>
<campaignId>0</campaignId>
<avgBigReceived>5.5</avgBigReceived>
<maxUniqueUsers>7</maxUniqueUsers>
<optimzeMethod>3</optimzeMethod>
<frequency>0</frequency>
<frequency__type>FREQ1</frequency__type>
<additionalInfo>none</additionalInfo>
<oob>TRUE</oob>
<ib>FALSE</ib>
<status>STATUS1</status>
<adSizes>
<adunit id="1" name="300X250">
<full-name>300 x 250 IMU - (Medium Rectangle)</full-name>
<width>300</width>
<height>250</height>
<type>Popups & Rectangles</type>
<publishers>
<publisher id="2">
<name>publisher2</name>
<profiles/>
<proposals>
<proposal id="0" version="0">
<publisherId>2</publisherId>
<buyId>1</buyId>
<creationDate class="sql-date">2010-11-11</creationDate>
<lastUpdated class="sql-date">2010-11-11</lastUpdated>
<cpm>5.0</cpm>
<minimumSpend>100</minimumSpend>
<info>none</info>
<revealUsers>FALSE</revealUsers>
<status>STATUS1</status>
<mediaPlanProposals/>
</proposal>
</proposals>
<adSizes>
<adunit reference="../../../.."/>
<adunit id="3" name="240X400">
<full-name>240 x 400 IMU - (Vertical Rectangle)</full-name>
<width>240</width>
<height>240</height>
<type>Popups & Rectangles</type>
<publishers>
<publisher reference="../../../.."/>
</publishers>
</adunit>
</adSizes>
</publisher>
</publishers>
</adunit>
</adSizes>
<profiles/>
<mediaPlans/>
<publisherProposals>
<proposal reference="../../adSizes/adunit/publishers/publisher/proposals/proposal"/>
</publisherProposals>
</buy>
正如您所看到的，该对象包含被定义为延迟获取的集合，此外还会提取集合中的集合。
带有查询的调试输出：
[http-8080-1] DEBUG org.hibernate.SQL - select buy0_.id as id0_0_, buy0_.additional_info as additional2_0_0_, buy0_.agency_id as agency3_0_0_, buy0_.auction_date as auction4_0_0_, buy0_.avg_bid_received as avg5_0_0_, buy0_.campaign_budget as campaign6_0_0_, buy0_.campaign_id as campaign7_0_0_, buy0_.frequency as frequency0_0_, buy0_.frequency_type as frequency9_0_0_, buy0_.maximum_unique_users as maximum10_0_0_, buy0_.optimize_method as optimize11_0_0_, buy0_.pre_auction_date as pre12_0_0_, buy0_.price_ceiling as price13_0_0_, buy0_.send_feedback_auto_mode as send14_0_0_, buy0_.status as status0_0_, buy0_.support_in_banner as support16_0_0_, buy0_.support_oob as support17_0_0_, buy0_.version as version0_0_ from buys buy0_ where buy0_.id=?
Hibernate: select buy0_.id as id0_0_, buy0_.additional_info as additional2_0_0_, buy0_.agency_id as agency3_0_0_, buy0_.auction_date as auction4_0_0_, buy0_.avg_bid_received as avg5_0_0_, buy0_.campaign_budget as campaign6_0_0_, buy0_.campaign_id as campaign7_0_0_, buy0_.frequency as frequency0_0_, buy0_.frequency_type as frequency9_0_0_, buy0_.maximum_unique_users as maximum10_0_0_, buy0_.optimize_method as optimize11_0_0_, buy0_.pre_auction_date as pre12_0_0_, buy0_.price_ceiling as price13_0_0_, buy0_.send_feedback_auto_mode as send14_0_0_, buy0_.status as status0_0_, buy0_.support_in_banner as support16_0_0_, buy0_.support_oob as support17_0_0_, buy0_.version as version0_0_ from buys buy0_ where buy0_.id=?
[http-8080-1] DEBUG org.hibernate.pretty.Printer - com.legolas.model.Buy{budget=1000, supportIB=0, avgBid=5.5, status=0, priceCeiling=5.0, maxUniqueUsers=7, optimzeMethod=3, frequency=0, additionalInfo=none, agencyId=1, frequencyType=0, version=0, sendFeedbackAutoMode=0, id=1, mediaPlans=<uninitialized>, adSizes=<uninitialized>, profiles=<uninitialized>, campaign=0, supportOOB=1, publisherProposals=<uninitialized>, preAuctionDate=25 september 2010, auctionDate=25 september 2010}
[http-8080-1] DEBUG org.hibernate.SQL - select adsizes0_.buy_id as buy1_1_, adsizes0_.ad_size_id as ad2_1_, adunit1_.id as id1_0_, adunit1_.full_name as full2_1_0_, adunit1_.height as height1_0_, adunit1_.name as name1_0_, adunit1_.type as type1_0_, adunit1_.width as width1_0_ from buy_ad_sizes adsizes0_ left outer join ad_units adunit1_ on adsizes0_.ad_size_id=adunit1_.id where adsizes0_.buy_id=?
Hibernate: select adsizes0_.buy_id as buy1_1_, adsizes0_.ad_size_id as ad2_1_, adunit1_.id as id1_0_, adunit1_.full_name as full2_1_0_, adunit1_.height as height1_0_, adunit1_.name as name1_0_, adunit1_.type as type1_0_, adunit1_.width as width1_0_ from buy_ad_sizes adsizes0_ left outer join ad_units adunit1_ on adsizes0_.ad_size_id=adunit1_.id where adsizes0_.buy_id=?
[http-8080-1] DEBUG org.hibernate.SQL - select publishers0_.adsize_id as adsize2_1_, publishers0_.publisher_id as publisher1_1_, publisher1_.publisher_id as id5_0_, publisher1_1_.name as name5_0_, publisher1_.name as name14_0_ from publishers_adsizes publishers0_ left outer join publishers publisher1_ on publishers0_.publisher_id=publisher1_.publisher_id left outer join accounts publisher1_1_ on publisher1_.publisher_id=publisher1_1_.id where publishers0_.adsize_id=?
Hibernate: select publishers0_.adsize_id as adsize2_1_, publishers0_.publisher_id as publisher1_1_, publisher1_.publisher_id as id5_0_, publisher1_1_.name as name5_0_, publisher1_.name as name14_0_ from publishers_adsizes publishers0_ left outer join publishers publisher1_ on publishers0_.publisher_id=publisher1_.publisher_id left outer join accounts publisher1_1_ on publisher1_.publisher_id=publisher1_1_.id where publishers0_.adsize_id=?
[http-8080-1] DEBUG org.hibernate.SQL - select profiles0_.publisher_id as publisher3_1_, profiles0_.id as id1_, profiles0_.id as id9_0_, profiles0_.profile_id as profile2_9_0_, profiles0_.publisher_id as publisher3_9_0_, profiles0_.reach as reach9_0_, profiles0_.stamped as stamped9_0_, profiles0_.targeting_name as targeting6_9_0_, profiles0_.users_on_site as users7_9_0_ from publisher_profiles profiles0_ where profiles0_.publisher_id=?
Hibernate: select profiles0_.publisher_id as publisher3_1_, profiles0_.id as id1_, profiles0_.id as id9_0_, profiles0_.profile_id as profile2_9_0_, profiles0_.publisher_id as publisher3_9_0_, profiles0_.reach as reach9_0_, profiles0_.stamped as stamped9_0_, profiles0_.targeting_name as targeting6_9_0_, profiles0_.users_on_site as users7_9_0_ from publisher_profiles profiles0_ where profiles0_.publisher_id=?
[http-8080-1] DEBUG org.hibernate.SQL - select proposals0_.publisher_id as publisher9_1_, proposals0_.id as id1_, proposals0_.id as id4_0_, proposals0_.additional_info as additional2_4_0_, proposals0_.buy_id as buy3_4_0_, proposals0_.cpm as cpm4_0_, proposals0_.creation_date as creation5_4_0_, proposals0_.last_updated as last6_4_0_, proposals0_.minimum_spend as minimum7_4_0_, proposals0_.proposal_status as proposal8_4_0_, proposals0_.publisher_id as publisher9_4_0_, proposals0_.reveal_num_of_users as reveal10_4_0_, proposals0_.version as version4_0_ from publishers_proposals proposals0_ where proposals0_.publisher_id=?
Hibernate: select proposals0_.publisher_id as publisher9_1_, proposals0_.id as id1_, proposals0_.id as id4_0_, proposals0_.additional_info as additional2_4_0_, proposals0_.buy_id as buy3_4_0_, proposals0_.cpm as cpm4_0_, proposals0_.creation_date as creation5_4_0_, proposals0_.last_updated as last6_4_0_, proposals0_.minimum_spend as minimum7_4_0_, proposals0_.proposal_status as proposal8_4_0_, proposals0_.publisher_id as publisher9_4_0_, proposals0_.reveal_num_of_users as reveal10_4_0_, proposals0_.version as version4_0_ from publishers_proposals proposals0_ where proposals0_.publisher_id=?
[http-8080-1] DEBUG org.hibernate.SQL - select mpproposal0_.proposal_id as proposal9_1_, mpproposal0_.id as id1_, mpproposal0_.id as id2_0_, mpproposal0_.budget as budget2_0_, mpproposal0_.comments as comments2_0_, mpproposal0_.cpm as cpm2_0_, mpproposal0_.exclusive_reach as exclusive5_2_0_, mpproposal0_.frequency_cap as frequency6_2_0_, mpproposal0_.impressions as impressi7_2_0_, mpproposal0_.mediaplan_id as mediaplan8_2_0_, mpproposal0_.proposal_id as proposal9_2_0_, mpproposal0_.reach as reach2_0_ from mediaplan_proposals mpproposal0_ where mpproposal0_.proposal_id=?
Hibernate: select mpproposal0_.proposal_id as proposal9_1_, mpproposal0_.id as id1_, mpproposal0_.id as id2_0_, mpproposal0_.budget as budget2_0_, mpproposal0_.comments as comments2_0_, mpproposal0_.cpm as cpm2_0_, mpproposal0_.exclusive_reach as exclusive5_2_0_, mpproposal0_.frequency_cap as frequency6_2_0_, mpproposal0_.impressions as impressi7_2_0_, mpproposal0_.mediaplan_id as mediaplan8_2_0_, mpproposal0_.proposal_id as proposal9_2_0_, mpproposal0_.reach as reach2_0_ from mediaplan_proposals mpproposal0_ where mpproposal0_.proposal_id=?
[http-8080-1] DEBUG org.hibernate.SQL - select adsizes0_.publisher_id as publisher1_1_, adsizes0_.adsize_id as adsize2_1_, adunit1_.id as id1_0_, adunit1_.full_name as full2_1_0_, adunit1_.height as height1_0_, adunit1_.name as name1_0_, adunit1_.type as type1_0_, adunit1_.width as width1_0_ from publishers_adsizes adsizes0_ left outer join ad_units adunit1_ on adsizes0_.adsize_id=adunit1_.id where adsizes0_.publisher_id=?
Hibernate: select adsizes0_.publisher_id as publisher1_1_, adsizes0_.adsize_id as adsize2_1_, adunit1_.id as id1_0_, adunit1_.full_name as full2_1_0_, adunit1_.height as height1_0_, adunit1_.name as name1_0_, adunit1_.type as type1_0_, adunit1_.width as width1_0_ from publishers_adsizes adsizes0_ left outer join ad_units adunit1_ on adsizes0_.adsize_id=adunit1_.id where adsizes0_.publisher_id=?
[http-8080-1] DEBUG org.hibernate.SQL - select publishers0_.adsize_id as adsize2_1_, publishers0_.publisher_id as publisher1_1_, publisher1_.publisher_id as id5_0_, publisher1_1_.name as name5_0_, publisher1_.name as name14_0_ from publishers_adsizes publishers0_ left outer join publishers publisher1_ on publishers0_.publisher_id=publisher1_.publisher_id left outer join accounts publisher1_1_ on publisher1_.publisher_id=publisher1_1_.id where publishers0_.adsize_id=?
Hibernate: select publishers0_.adsize_id as adsize2_1_, publishers0_.publisher_id as publisher1_1_, publisher1_.publisher_id as id5_0_, publisher1_1_.name as name5_0_, publisher1_.name as name14_0_ from publishers_adsizes publishers0_ left outer join publishers publisher1_ on publishers0_.publisher_id=publisher1_.publisher_id left outer join accounts publisher1_1_ on publisher1_.publisher_id=publisher1_1_.id where publishers0_.adsize_id=?
[http-8080-1] DEBUG org.hibernate.SQL - select profiles0_.buy_id as buy1_1_, profiles0_.profile_id as profile2_1_, profile1_.id as id12_0_, profile1_.agency_id as agency2_12_0_, profile1_.name as name12_0_ from buy_profiles profiles0_ left outer join profiles profile1_ on profiles0_.profile_id=profile1_.id where profiles0_.buy_id=?
Hibernate: select profiles0_.buy_id as buy1_1_, profiles0_.profile_id as profile2_1_, profile1_.id as id12_0_, profile1_.agency_id as agency2_12_0_, profile1_.name as name12_0_ from buy_profiles profiles0_ left outer join profiles profile1_ on profiles0_.profile_id=profile1_.id where profiles0_.buy_id=?
[http-8080-1] DEBUG org.hibernate.SQL - select mediaplans0_.buy_id as buy2_1_, mediaplans0_.id as id1_, mediaplans0_.id as id11_0_, mediaplans0_.buy_id as buy2_11_0_, mediaplans0_.is_final as is3_11_0_ from mediaplans mediaplans0_ where mediaplans0_.buy_id=?
Hibernate: select mediaplans0_.buy_id as buy2_1_, mediaplans0_.id as id1_, mediaplans0_.id as id11_0_, mediaplans0_.buy_id as buy2_11_0_, mediaplans0_.is_final as is3_11_0_ from mediaplans mediaplans0_ where mediaplans0_.buy_id=?
[http-8080-1] DEBUG org.hibernate.SQL - select publisherp0_.buy_id as buy3_1_, publisherp0_.id as id1_, publisherp0_.id as id4_0_, publisherp0_.additional_info as additional2_4_0_, publisherp0_.buy_id as buy3_4_0_, publisherp0_.cpm as cpm4_0_, publisherp0_.creation_date as creation5_4_0_, publisherp0_.last_updated as last6_4_0_, publisherp0_.minimum_spend as minimum7_4_0_, publisherp0_.proposal_status as proposal8_4_0_, publisherp0_.publisher_id as publisher9_4_0_, publisherp0_.reveal_num_of_users as reveal10_4_0_, publisherp0_.version as version4_0_ from publishers_proposals publisherp0_ where publisherp0_.buy_id=?
Hibernate: select publisherp0_.buy_id as buy3_1_, publisherp0_.id as id1_, publisherp0_.id as id4_0_, publisherp0_.additional_info as additional2_4_0_, publisherp0_.buy_id as buy3_4_0_, publisherp0_.cpm as cpm4_0_, publisherp0_.creation_date as creation5_4_0_, publisherp0_.last_updated as last6_4_0_, publisherp0_.minimum_spend as minimum7_4_0_, publisherp0_.proposal_status as proposal8_4_0_, publisherp0_.publisher_id as publisher9_4_0_, publisherp0_.reveal_num_of_users as reveal10_4_0_, publisherp0_.version as version4_0_ from publishers_proposals publisherp0_ where publisherp0_.buy_id=?
答案 0 :(得分：1)
发表我的评论作为回答：我想知道这不是XML序列化的副作用。如果不涉及XML序列化，您能否确认这也会发生？
答案 1 :(得分：0)
你在关闭会话之前得到了输出吗？
想象一下，你做了类似的事情：
Session session = sessionFactory.openSession();
Query query = session.createQuery("From Buy where id =xxxx");
Buy buy = (Buy) query.uniqueResult();
//Here you have access to the whole graph, so you can get any child
buy.profiles().iterator.next(); // that will work
session.close();
//After here, you won't be able to access to any collection.
//If you try to do this you will get a Lazy Initialization Exception
buy.profiles().iterator().next();
请在此处找到一些示例：
http://ignaciosuay.com/how-to-avoid-hibernate-lazy-initialization-exception/