我得到了无法获得系统Java编译器.请使用JDK,而不是JRE.当jsp文件在我的项目中时,我将它部署到Google App Engine.所以我尝试了以下方法来解决问题:
但这些都没有解决问题.我怎么解决这个问题？
我正在学习游戏框架,并了解我可以映射请求,例如/manager/user:
GET /manage/:user Controllers.Application.some(user:String)
我如何映射请求/play/video?video_id=1sh1？
使用maven创建了一个Web应用程序并将其部署在heroku上.一切正常,但当我调用一个使用postgresql-9.2-1002.jdbc4驱动程序的动作时,我得到:
java.lang.UnsupportedClassVersionError: org/postgresql/Driver : Unsupported major.minor version 51.0 (unable to load class org.postgresql.Driver)
我知道问题是我在我的开发环境中使用jdk 7并且在heroku上运行了较低版本(至少我认为是这样).我的第一个问题是,为什么其他操作不会给出此错误,只有使用postqresql驱动程序的操作才会出现此问题,其余的应用程序工作正常？我做的另一件事是下载jdk 6,然后将其添加到我的项目构建路径,然后将eclipse编译器符合性配置为1.6,但即便如此,我也有同样的问题.我怎么解决这个问题？
我有一个Spring Boot应用程序，当我使用来自Intellj的嵌入式服务器运行它时，它运行良好。但是，当我将其打包到.war文件并将其部署在tomcat上时，出现以下错误：
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/file-upload-0.0.1-SNAPSHOT]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:754)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:730)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:985)
at
org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1857)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: More than one fragment with the name [spring_web] was found. This is not legal with relative ordering. See section 8.2.2 2c of the Servlet specification for details. Consider using absolute ordering.
at org.apache.tomcat.util.descriptor.web.WebXml.orderWebFragments(WebXml.java:2200)
at
org.apache.tomcat.util.descriptor.web.WebXml.orderWebFragments(WebXml.java:2159)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1124)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:769)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:299)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:94)
at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5176)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) …我正在为我的AbstractHibernateRepository保存方法编写一个单元测试.我正在使用spring test runner但运行时遇到以下异常:
org.hibernate.service.UnknownServiceException: Unknown service requested [org.hibernate.engine.jdbc.connections.spi.ConnectionProvider]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:201)
我的测试:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("file:src/main/webapp/WEB-INF/spring/spring-hibernate.xml")
public class AbstractHibernateRepoTest extends AbstractHibernateRepo<Video> {
@Autowired private SessionFactory sessionFactory;
private Video video;
public AbstractHibernateRepoTest()
{
super(Video.class);
}
@Before
public void setUp ()
{
video = new Video();
video.setId("xyz");
video.setName("Video Name");
video.setSrc("Source");
video.setThumbnail("Thumbnail");
Session session = sessionFactory.openSession();
session.beginTransaction();
session.save(video) ;
session.close();
}
@Test
public void testSaveMethod ()
{
video.setId("asa");
String id = (String) save(video);
Assert.assertEquals(video.getId(), id);
}
@After
public void breakDown ()
{
sessionFactory.close();
}
}
库: …
我正在编写一个使用Hibernate连接到Heroku Postresql的Web应用程序.当应用程序部署到Heroku时,一切正常,但是当我在本地运行应用程序时,我得到以下异常.
org.hibernate.exception.GenericJDBCException: Could not open connection
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:304)
at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:169)
at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin(JdbcTransaction.java:67)
at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin(AbstractTransactionImpl.java:160)
at org.hibernate.internal.SessionImpl.beginTransaction(SessionImpl.java:1395)
at com.kyrogaming.actions.HomeAction.execute(HomeAction.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:450)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:289)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73) …我试图从ul元素中获取li标签然后隐藏它们但是当我调用hide函数时我得到了Object#没有方法'hide'
var li = $(this).siblings("ul").children("li");
li.get(0).hide ();
我认为问题是我不能调用常规的jquery方法,除非它是一个对象,如果是这样我怎样才能得到对象而不是如果不是如何调用方法形式
我正在编写一个struts2应用程序并使用hibernate进行持久化.我在heroku上部署了app应用程序,一切正常,但是当我在本地运行时,我得到:
org.postgresql.util.PSQLException: FATAL:no pg_hba.conf entry for host "xx.xx.xxx.xxx", user "someuser", database "somedatabase", SSL off
我知道问题是我需要通过ssl连接到数据库但是如何在本地设置它？
是否有任何java工具可用于自动下载我想要使用的框架的jar并管理Eclipse中的依赖项.我一直很羡慕Visual Studio,做这样的事情是多么容易,我想知道是否有像Eclipse这样的功能.
java ×8
hibernate ×3
heroku ×2
postgresql ×2
dom ×1
javascript ×1
jquery ×1
spring ×1
spring-boot ×1
spring-mvc ×1
spring-test ×1
tomcat8 ×1