org.hibernate.LazyInitializationException

時間 2021-01-20

標籤 hibernate LazyInitializationEx 欄目 Hibernate 简体版

原文原文鏈接

在一對多和多對一的時候，默認的lazy爲true，多表的時候，懶加載是默認的，所以在頁面和servlet交互的時候，要將lazy改爲false 勤加載和懶加載勤加載：調用的時候就會先檢索一級緩存，如果一級緩存存在對應的主鍵對象，就不會發起數據庫的查詢，將緩存中的數據值返回，如果一級緩存沒有，就會檢索是否存在二級緩存，如果二級緩存存在就返回，否在就發起SQL語句，到達數據庫。懶加載：又叫延遲加載

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1. org.hibernate.LazyInitializationException
2. org.hibernate.LazyInitializationException: could not initialize proxy ----- no Session
3. org.hibernate.lazyInitializationException（懶加載異常）
4. org.hibernate.LazyInitializationException: could not initialize proxy - no Session
5. net.sf.json.JSONException: org.hibernate.LazyInitializationException: failed to lazily initialize a
6. org.hibernate.LazyInitializationException: could not initialize proxy [com.angus.entity.ProductCateg
7. org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role:
8. org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role
9. org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.jav
10. 【org.hibernate.LazyInitializationException: failed to lazily initialize】問題解決
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1. org.hibernate.LazyInitializationException
2. org.hibernate.LazyInitializationException: could not initialize proxy ----- no Session
3. org.hibernate.lazyInitializationException（懶加載異常）
4. org.hibernate.LazyInitializationException: could not initialize proxy - no Session
5. net.sf.json.JSONException: org.hibernate.LazyInitializationException: failed to lazily initialize a
6. org.hibernate.LazyInitializationException: could not initialize proxy [com.angus.entity.ProductCateg
7. org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role:
8. org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role
9. org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.jav
10. 【org.hibernate.LazyInitializationException: failed to lazily initialize】問題解決

>>更多相關文章<<