Spring环境下使用TestNG进行单元测试及出现的各种问题

今天在用Spring整合MyBatis后，在使用单元测试时发现了一些坑

package com.germa.service;

import com.germa.domain.Forum;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.test.annotation.Rollback;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.testng.AbstractTransactionalTestNGSpringContextTests;
import org.testng.annotations.Test;


@ContextConfiguration("classpath:applicationContext-mybatis.xml")
@Rollback(false)
public class TestMyBatis extends
        AbstractTransactionalTestNGSpringContextTests {

    private ForumService forumService;
    @Autowired
    public void setForumService(ForumService forumService) {
        this.forumService = forumService;
    }

    @Test
    public void testAddForum(){
        //ApplicationContext ctx=new ClassPathXmlApplicationContext("classpath:applicationContext-mybatis.xml");
       // this.forumService=(ForumService)ctx.getBean("forumService");
        Forum forum=new Forum();
        forum.setForumId(3);
        forum.setForumName("forum3");
        forum.setForumDesc("Desc3");
        this.forumService.addForum(forum);
    }
    
}
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