Eclipse throws java.lang.NullPointerException when running Spring JUnit

当我运行我的 junit 测试时，控制台打印此 Excpetion：

java.lang.NullPointerException
at org.eclipse.jdt.internal.junit4.runner.SubForestFilter.shouldRun(SubForestFilter.java:81)
at org.junit.internal.runners.JUnit4ClassRunner.filter(JUnit4ClassRunner.java:110)
at org.junit.runner.manipulation.Filter.apply(Filter.java:47)
at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:34)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createFilteredTest(JUnit4TestLoader.java:77)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.createTest(JUnit4TestLoader.java:68)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestLoader.loadTests(JUnit4TestLoader.java:43)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:444)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

像这样的基本测试对象

import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.transaction.TransactionConfiguration;
import org.springframework.transaction.annotation.Transactional;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {
            "classpath*:config/spring/appcontext-*.xml",
            "classpath*:config/sqlmap/*.xml"
})
@TransactionConfiguration(defaultRollback = false)
@Transactional
public abstract class AbstractTestObject {
    static {
        //DOMConfigurator.configure("target/classes/log/log4j.xml");
    }
}

而JUnit方法就像这样：

public class StaffInfoServiceImplTest extends AbstractTestObject{
    @Autowired
    StaffInfoServiceImpl service;

    @Test
    public void insertTest() {
        StaffInfo bo = new StaffInfo();
        bo.setEmail("a@b.com");
        bo.setEntId(1);
        bo.setEntStaffNum("000XXXX");
        bo.setName("julia");
        bo.setPhone("00000000");
        bo.setSerialNum("SD12233KSRONDU189342ND");
        bo.setSuperior(2321);
        bo.setDepartment("Sale");
        bo.setSingleCredit(BigDecimal.valueOf(100));
        bo.setMonthlyCredit(BigDecimal.valueOf(10000));
        SLTContext c = new SLTContext();
        c.setOperator("0000001");
        service.insertStaffInfo(bo, c);
    }
}

我的项目是Java EE项目，使用maven来管理lib，使用spring管理bean。

我的开发环境是：
Mac OS X Yosetime 10.10.4
Eclipse Java EE IDE for Web Developers（版本：Mars Release （4.5.0））
Maven 插件（从 Eclipse->安装新软件）

我想这是eclipse junit和project junit config之间的冲突，但我不确定。

如何解决问题，谢谢。