sqlSessionFactory无法注入，报Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required

转载源为：http://www.cnblogs.com/hawk0035/p/3337283.html?utm_source=tuicool  

之前一直使用mybatis+mybatis-spring-1.1.1，系统升级mybatis后使用mybatis-spring-1.2.0，

再其它配置均为修改的情况下运行出错：Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required

从SqlSessionDaoSupport 这个类的源码中可以看出，原因是mybatis-spring-1.2.0中取消了自动注入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中代码片段为：

 1 public abstract class SqlSessionDaoSupport extends DaoSupport { 2  3     private SqlSession sqlSession; 4  5     private boolean externalSqlSession; 6  7     @Autowired(required = false) 8     public final void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) { 9         if (!this.externalSqlSession) {10             this.sqlSession = new SqlSessionTemplate(sqlSessionFactory);11         }12     }13 14     @Autowired(required = false)15     public final void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate) {16         this.sqlSession = sqlSessionTemplate;17         this.externalSqlSession = true;18     }19     ……20 21 }

 

 

可能是为了解决多数据源的问题吧，取消了自动注入。没用到多数据源，不太关心这个。

解决方案：因为我们dao层是继承于一个dao基类，所以只要在这个基类中注入任意一个属性即可。SqlSessionFactory在spring配置文件中已经配置。

1 public class CommonDao extends SqlSessionDaoSupport {2     @Resource3     public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory){4         super.setSqlSessionFactory(sqlSessionFactory);5     }