在Oracle 10g中使用Hibernate将数据保存到Clob中

时间:2013-03-12 17:02:57

标签: java oracle hibernate oracle10g clob

我在Hibernate

中有一个java.sql.Clob列的表

hbm文件:

<class name="com.model.ClobModel" table="table1">
   <id name="id" column="id">
      <generator class="assigned"></generator>
  </id> 
  <property name="clobData" type="clob">
      <column name="ClobData"></column>
  </property>

这是ClobModel

private Integer id;
public Integer getId() {
    return id;
}

public void setId(Integer id) {
    this.id = id;
}

private Clob clobData;

public Clob getClobData() {
    return clobData;
}

public void setClobData(Clob clobData) {
    this.clobData = clobData;
}

我在休眠时试过这个:

SessionFactory sf = new Configuration().configure("clob.cfg.xml").buildSessionFactory();
    Session sess = sf.openSession();

    ClobModel cb = new  ClobModel();
    cb.setId(101);
    try {
                // getClobData() method returns String, trying to convert it into java.sql.Clob and then assign it to the model
                   cb.setClobData(new javax.sql.rowset.serial.SerialClob(new ClobInsert().getClobData().toCharArray()));
    } catch (SerialException e) {
        e.printStackTrace();
    } catch (SQLException e) {
        e.printStackTrace();
    }

    sess.save(cb);
    sess.flush();
    System.out.println("Exit!!!");

我收到例外情况:

javax.sql.rowset.serial.SerialClob cannot be cast to oracle.sql.CLOB

上面提到的所有Clob都是java.sql.Clob类型。

不确定如何将String转换为java.sql.Clob

1 个答案:

答案 0 :(得分:4)

您需要将字段类型明确映射到java.sql.Clob

<property
    name="data"
    type="java.sql.Clob"
    update="true"
    insert="true"
    column="data"
/>