SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
Properties settingsProperties = new Properties();
// 使用log4j输出jdbc日志
settingsProperties.setProperty("logImpl", "LOG4J");
sqlSessionFactoryBean.setConfigurationProperties(settingsProperties);
//查询返回Map时设置值为null
org.apache.ibatis.session.Configuration configuration = new org.apache.ibatis.session.Configuration();
configuration.setCallSettersOnNulls(true);
sqlSessionFactoryBean.setConfiguration(configuration);