小编Nic*_*tto的帖子

我是Spring的新手,并开始从这个站点做官方指南:https: //spring.io/guides

我想做这个指南:https: //spring.io/guides/gs/scheduling-tasks/

我得到以下例外:

2014-02-14 16:25:21.614  INFO 9032 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.scheduling.annotation.SchedulingConfiguration' of type [class org.springframework.scheduling.annotation.SchedulingConfiguration$$EnhancerByCGLIB$$5b48d763] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2014-02-14 16:25:21.638  INFO 9032 --- [           main] .c.l.ClasspathLoggingApplicationListener : Application failed to start with classpath: [file:/C:/work/Spring/SpringTutorial/target/classes/, file:/C:/work/apache-maven-3.0.3/repo/javax/servlet/javax.servlet-api/3.0.1/javax.servlet-api-3.0.1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-starter/1.0.0.RC1/spring-boot-starter-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot/1.0.0.RC1/spring-boot-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-core/4.0.0.RELEASE/spring-core-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-context/4.0.0.RELEASE/spring-context-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-autoconfigure/1.0.0.RC1/spring-boot-autoconfigure-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-starter-logging/1.0.0.RC1/spring-boot-starter-logging-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/slf4j/jcl-over-slf4j/1.7.5/jcl-over-slf4j-1.7.5.jar, file:/C:/work/apache-maven-3.0.3/repo/org/slf4j/slf4j-api/1.7.5/slf4j-api-1.7.5.jar, file:/C:/work/apache-maven-3.0.3/repo/org/slf4j/jul-to-slf4j/1.7.5/jul-to-slf4j-1.7.5.jar, file:/C:/work/apache-maven-3.0.3/repo/org/slf4j/log4j-over-slf4j/1.7.5/log4j-over-slf4j-1.7.5.jar, file:/C:/work/apache-maven-3.0.3/repo/ch/qos/logback/logback-classic/1.0.13/logback-classic-1.0.13.jar, file:/C:/work/apache-maven-3.0.3/repo/ch/qos/logback/logback-core/1.0.13/logback-core-1.0.13.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-starter-web/1.0.0.RC1/spring-boot-starter-web-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/boot/spring-boot-starter-tomcat/1.0.0.RC1/spring-boot-starter-tomcat-1.0.0.RC1.jar, file:/C:/work/apache-maven-3.0.3/repo/org/apache/tomcat/embed/tomcat-embed-core/7.0.47/tomcat-embed-core-7.0.47.jar, file:/C:/work/apache-maven-3.0.3/repo/org/apache/tomcat/embed/tomcat-embed-logging-juli/7.0.47/tomcat-embed-logging-juli-7.0.47.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-web/4.0.0.RELEASE/spring-web-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/aopalliance/aopalliance/1.0/aopalliance-1.0.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-aop/4.0.0.RELEASE/spring-aop-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-beans/4.0.0.RELEASE/spring-beans-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-webmvc/4.0.0.RELEASE/spring-webmvc-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/org/springframework/spring-expression/4.0.0.RELEASE/spring-expression-4.0.0.RELEASE.jar, file:/C:/work/apache-maven-3.0.3/repo/com/fasterxml/jackson/core/jackson-databind/2.3.1/jackson-databind-2.3.1.jar, file:/C:/work/apache-maven-3.0.3/repo/com/fasterxml/jackson/core/jackson-annotations/2.3.0/jackson-annotations-2.3.0.jar, …

如何测试字符串以查看它是否包含数组中的任何字符串？

而不是使用

if (string.contains(item1) || string.contains(item2) || string.contains(item3))

我正在尝试用@InjectMocks和进行单元测试@Mock.

@RunWith(MockitoJUnitRunner.class)
public class ProblemDefinitionTest {

    @InjectMocks
    ProblemDefinition problemDefinition;

    @Mock
    Matrix matrixMock;    

    @Test
    public void sanityCheck() {
        Assert.assertNotNull(problemDefinition);
        Assert.assertNotNull(matrixMock);
    }
}

如果我不包含@RunWith注释,则测试失败.但

不推荐使用MockitoJUnitRunner类型

我正在使用Mockito 2.6.9.我该怎么办呢？

我有一个ScheduledExecutorService时间周期性的几个不同的任务scheduleAtFixedRate(Runnable, INIT_DELAY, ACTION_DELAY, TimeUnit.SECONDS);

我也有一个Runnable与此调度程序不同的用法.当我想从调度程序中删除其中一个任务时,问题就开始了.

有没有办法做到这一点？

我是否正确使用一个调度程序执行不同的任务？实现这个的最佳方法是什么？

我的程序使用Java Scripting API并且可以同时评估一些脚本.他们不使用共享脚本对象,绑定或上下文,但可以使用相同ScriptEngine和CompiledScript对象.我看到Java 8中的Oracle Nashorn实现不是多线程的,ScriptEngineFactory.getParameter('THREADING')返回null文档所说的内容:

引擎实现不是线程安全的,不能用于在多个线程上并发执行脚本.

这是否意味着我应该ScriptEngine为每个线程创建一个单独的实例？此外,文档没有说明CompiledScript并发使用,但:

每个CompiledScript都与ScriptEngine相关联

可以假设CompiledScript线程安全依赖于相关ScriptEngine,即我应该CompiledScript为Nashorn的每个线程使用单独的实例.

如果我应该,对于这个(我认为非常常见的)案例,使用ThreadLocal,池或其他什么是适当的解决方案？

final String script = "...";
final CompiledScript compiled = ((Compilable)scriptEngine).compile(script);
for (int i=0; i<50; i++) {
    Thread thread = new Thread () {
        public void run() {
            try {
                scriptEngine.eval(script, new SimpleBindings ());  //is this code thread-safe?
                compiled.eval(new SimpleBindings ());  //and this?
            }
            catch (Exception e)  {  throw new RuntimeException …

问题发生在

Element element = it.next();

并且包含该行的代码位于 OnTouchEvent

for (Iterator<Element> it = mElements.iterator(); it.hasNext();){
    Element element = it.next();

    if(touchX > element.mX  && touchX < element.mX + element.mBitmap.getWidth() && touchY > element.mY   
            && touchY < element.mY + element.mBitmap.getHeight()) {  

        //irrelevant stuff..

        if(element.cFlag){
            mElements.add(new Element("crack",getResources(), (int)touchX,(int)touchY));
            element.cFlag = false;

        }           
    }
}

所有这一切都在里面synchronized(mElements),这里mElements是一个ArrayList<Element>

当我触摸它时Element,它可能会激活cFlag,这将创建另一个Element具有不同属性的属性,这些属性将从屏幕上掉落并在不到一秒的时间内自行消失.这是我创建粒子效果的方式.我们可以称之为"粒子" crack,就像构造函数中的String参数一样.

这一切都正常,直到我添加另一个主要Element.现在我同时Elements在屏幕上有两个,如果我触摸最新的Element,它工作正常,并启动粒子.

但是,如果我触摸并激活cFlag旧版本Element,那么它会给我一个例外.

 07-28 15:36:59.815: ERROR/AndroidRuntime(4026): FATAL …

我以为我知道如何使用JOIN,JPQL但显然不是.谁能帮我？

select b.fname, b.lname from Users b JOIN Groups c where c.groupName = :groupName

这给了我例外

org.eclipse.persistence.exceptions.JPQLException
Exception Description: Syntax error parsing the query
Internal Exception: org.eclipse.persistence.internal.libraries.antlr.runtime.EarlyExitException

Users与...有OneToMany关系Groups.

Users.java

@Entity
public class Users implements Serializable{

    @OneToMany(mappedBy="user", cascade=CascadeType.ALL)
    List<Groups> groups = null;
}

Groups.java

@Entity
public class Groups implements Serializable {
    @ManyToOne
    @JoinColumn(name="USERID")
    private Users user;
}

我的第二个问题是让这个查询返回一个唯一的结果,如果我这样做

String temp = (String) em.createNamedQuery("***")
    .setParameter("groupName", groupName)
    .getSingleResult();

***代表上面的查询名称.所以确实fname与lname内部连接在一起temp或者我拿到List<String> …

是否可以BLOB使用sqldeveloper 插入oracle中的列？

即:像:

insert into mytable(id, myblob) values (1,'some magic here');

我正在玩JavaFX Tooltip.我意识到,就个人而言,徘徊在某些东西和实际出现的工具提示之间的延迟太长了.API中的内容显示:

通常,当鼠标在控件上移动时,工具提示会"激活".工具提示变为"激活"和实际显示之间通常存在一些延迟.详细信息(例如延迟量等)留给Skin实现.

经过一些进一步的调查,我无法找到控制此行为的任何可能性.在JavaFX的CSS参考没有关于延迟时间和运行时间,评价信息getCssMetaData()没有帮助.

我知道,有一种方法可以通过onMouseEntered和手动控制工具提示onMouseExited,但是真的没有别的方法吗？或者我错过了一个明显的选择？

我因某些愚蠢的错误而陷入困境但却无法弄明白!

Hibernate 4.2.6

我之前曾多次提到这个问题,例如这里

的hibernate.cfg.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN" 
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
    <session-factory>
        <property name="hibernate.bytecode.use_reflection_optimizer">false</property>

        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.password">root</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
        <property name="hibernate.connection.username">root</property>

        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>

        <property name="show_sql">true</property>

        <property name="hibernate.current_session_context_class">org.hibernate.context.ThreadLocalSessionContext</property>

        <mapping resource="Event.hbm.xml"></mapping>
    </session-factory>
</hibernate-configuration>

Event.hbm.xml

<!DOCTYPE hibernate-mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

    <class name="com.db.pojo.Event" table="Events">

        <id name="id" column="Id">
            <generator class="native"></generator>
        </id>
        <property name="title" column="Title"></property>

        <property name="date" column="Date" type="timestamp"></property>

    </class>

</hibernate-mapping>

的HibernateUtil

package com.db.util;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistryBuilder;

public class HibernateUtil { …