小编Aid*_*uly的帖子

我正在尝试使用Spring框架使用JUnit测试CRUD方法.下面的代码完美无缺

 @Transactional
public class TestJdbcDaoImpl {
    @SuppressWarnings("deprecation")
    @BeforeClass 
    @Test
    public static void setUpBeforeClass() throws Exception {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("spring.xml");
        JdbcDaoImpl dao = ctx.getBean("jdbcDaoImpl",JdbcDaoImpl.class);
        Circle cicle = new Circle();
        dao.insertCircle(new Circle(6,"e"));
    }}

但是,使用@RunWith(SpringJUnit4ClassRunner.class)的代码会给我一个错误

**2014年6月11日下午1:00:15 org.springframework.test.context.TestContextManager retrieveTestExecutionListeners信息:无法实例化TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener].指定自定义侦听器类或使默认侦听器类(及其所需的依赖项)可用.违规类:[javax/servlet/ServletContext]**

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/spring.xml")
@Transactional
public class TestJdbcDaoImpl {

   @Autowired
   private static JdbcDaoImpl dao;

   @SuppressWarnings("deprecation")
   @BeforeClass 
   public static void setUpBeforeClass() throws Exception {
       Circle cicle = new Circle();
       dao.insertCircle(new Circle(10,"e"));
   }

我的问题是在java中编译c ++文件.我试过执行c#,很好.这个用于编译c#的提取代码

ProcessBuilder launcher = new ProcessBuilder("gmcs","HelloWorld.cs");`

但是,我的c ++代码

ProcessBuilder launcher =new ProcessBuilder("g++", "HelloWorld.cpp -o HelloWorld");

返回错误= 2,没有这样的文件或目录指示我
launcher.directory(new File(path)) 在两种情况下使用的路径

美好的一天!我在获取java线程的内存使用方面遇到了麻烦.我的研究把我带到了ThreadMxBean库.根据javadocThreadMXBean#setThreadAllocatedMemoryEnabled,应该有一个getThreadAllocatedBytes允许获取线程内存的方法.但是,我找不到这种类的方法,而存在上述文档中描述的其他方法.

示例getCurrentThreadCpuTime()并isThreadCpuTimeEnabled()显示在我的代码中.

import java.lang.management.ManagementFactory;
import java.lang.management.ThreadMXBean;
import javax.management.AttributeNotFoundException;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.MalformedObjectNameException;
import javax.management.ReflectionException;

class TwoThreadsTest {
    public static void main (String[] args) throws Exception {
        new Coding("Jamaica").start();
        ThreadMXBean threadBean = ManagementFactory.getThreadMXBean();
        long b = threadBean.getCurrentThreadCpuTime();
        boolean bool= threadBean.isThreadCpuTimeEnabled();
        System.out.println(bool);
    }
}