druid连接泄露故障全面分析

private Object runSql(List<String> sqlSessionFactotyBeanNameList, MethodInvocation invocation)
            throws InvocationTargetException, IllegalAccessException {
        List<SqlSession> sqlSessionList = Lists.newArrayList();
        Object result = null;
        try {
            for (String sessionFactotyBeanName : sqlSessionFactotyBeanNameList) {
                SqlSessionFactory sqlSessionFactory =
                        RgApplicationContextUtil.getBean(
                                sessionFactotyBeanName, SqlSessionFactory.class);
                SqlSession sqlSession = sqlSessionFactory.openSession(ExecutorType.BATCH);
                Object mapper = sqlSession.getMapper(invocation.getMethod().getDeclaringClass());
                Object[] param = invocation.getArguments();
                result = invocation.getMethod().invoke(mapper, param);
                sqlSessionList.add(sqlSession);//问题代码，注意!!!!
                sqlSession.commit();
            }
        } catch (Exception ex) {
            sqlSessionList.stream()
                    .forEach(
                            x -> {
                                x.rollback();
                            });
        } finally {
            sqlSessionList.stream()
                    .forEach(
                            x -> {
                                x.close();
                            });
        }
        return result;
    }

<select id="getBatchIdWithLimit" resultType="java.lang.Long">
	SELECT x.id FROM context x WHERE x.oid = #{oid} ORDER BY id ASC
	LIMIT #{offset}, #{limit}
</select>

set autocommit=0;　　//关闭数据的事务自动提交
SELECT * FROM xxx a WHERE a.id='111' for update; //获取数据库的行锁
commit;//提交事务