Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required

之前一直使用mybatis+mybatis-spring-1.1.1，系統升級mybatis后使用mybatis-spring-1.2.0，

再其它配置均為修改的情況下運行出錯：Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required

從SqlSessionDaoSupport 這個類的源碼中可以看出，原因是mybatis-spring-1.2.0中取消了自動注入SqlSessionFactory 和 SqlSessionTemplate

/**
 * Convenient super class for MyBatis SqlSession data access objects.
 * It gives you access to the template which can then be used to execute SQL methods.
 * <p>
 * This class needs a SqlSessionTemplate or a SqlSessionFactory.
 * If both are set the SqlSessionFactory will be ignored.
 * <p>
 * {code Autowired} was removed from setSqlSessionTemplate and setSqlSessionFactory
 * in version 1.2.0.
 *
 * @see #setSqlSessionFactory
 * @see #setSqlSessionTemplate
 * @see SqlSessionTemplate
 * @version $Id$
 */
public abstract class SqlSessionDaoSupport extends DaoSupport {

  private SqlSession sqlSession;

  private boolean externalSqlSession;

  public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {
    if (!this.externalSqlSession) {
      this.sqlSession = new SqlSessionTemplate(sqlSessionFactory);
    }
  }

  public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
    this.sqlSession = sqlSessionTemplate;
    this.externalSqlSession = true;
  }
 ……
}

 

 

1.1.1中代碼片段為：

public abstract class SqlSessionDaoSupport extends DaoSupport {

    private SqlSession sqlSession;

    private boolean externalSqlSession;

    @Autowired(required = false)
    public final void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {
        if (!this.externalSqlSession) {
            this.sqlSession = new SqlSessionTemplate(sqlSessionFactory);
        }
    }

    @Autowired(required = false)
    public final void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {
        this.sqlSession = sqlSessionTemplate;
        this.externalSqlSession = true;
    }
    ……

}

 

 

可能是為了解決多數據源的問題吧，取消了自動注入。沒用到多數據源，不太關心這個。

解決方案：因為我們dao層是繼承於一個dao基類，所以只要在這個基類中注入任意一個屬性即可。SqlSessionFactory在spring配置文件中已經配置。

public class CommonDao extends SqlSessionDaoSupport {
    @Resource
    public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory){
        super.setSqlSessionFactory(sqlSessionFactory);
    }