jpa批量插入沒有正確插入

Question

我正在開發jsf與jpa項目現在我在大容量插入問題關於列表大小超過6000這意味着它應該在表中插入超過6000個記錄，但它只插入215個記錄。

我的代碼是在這裏

factory = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME); 
      EntityManager em = factory.createEntityManager(); 
      try { 
       em.getTransaction().begin(); 
       for (int i = 0; i < sgmlList.size(); i++) { 
        // Getting the object from the list by using loop 
        SGML sgml = sgmlList.get(i); 
        em.persist(sgml); 

       } 
em.getTransaction().commit(); 
       FacesContext.getCurrentInstance().addMessage(null, 
         new FacesMessage("SGML imported successfully")); 
      } catch (Exception ex) { 

      } finally { 
       if (em != null) { 
        em.close(); 
       } 
      } 

和我的堅持XML是

<?xml version="1.0" encoding="UTF-8"?> 
<persistence version="2.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"> 
    <persistence-unit name="Cation" transaction-type="RESOURCE_LOCAL"> 
     <class>com.cation.bean.Users</class> 
     <class>com.cation.bean.BatchInfo</class> 
     <class>com.cation.bean.SGML</class> 
     <properties> 
      <property name="javax.persistence.jdbc.url" value="jdbc:mysql://192.168.1.4:3306/cation"/> 
      <property name="javax.persistence.jdbc.user" value="rix"/> 
      <property name="javax.persistence.jdbc.password" value="rix123"/> 
      <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/> 
     </properties> 
    </persistence-unit> 
</persistence> 

我試過這個代碼還當它持續的對象列表

if (i % 200 == 0) { 
        em.flush(); 
        em.clear(); 
       } 

但那麼也會出現同樣的問題。任何人都可以幫助解決這個問題PLZ。

Answer 1

你會得到什麼錯誤？您正在處理所有錯誤並忽略它們，將其刪除以消除錯誤。