我有一个在xml中定义了初始化方法的类我的类(class):publicclassmyClass{privateThreadt;publicvoidinit(){t=newThread(){@Overridepublicvoidrun(){while(true)try{doStuff();Thread.sleep(1000);}catch(Exceptione){e.printStackTrace();}}};t.start();}publicvoiddestroy(){t.interrupt();}}应用启动时,这些线程运行良好,一切正常一段时间后我得到以下异常。INFO:Illeg
使用dynamic-update或dynamic-insert有积极的作用,但通常只对性能有轻微影响,http://www.mkyong.com/hibernate/hibernate-dynamic-update-attribute-example/也提到过。但是引用文档提到这可能会对性能产生负面影响,如下文http://docs.jboss.org/hibernate/core/3.3/reference/en/html/mapping.html#mapping-declaration-class中所述。:Althoughthesesettingscanincreaseperfor
我想将日志记录添加到我的Servlet,所以我创建了过滤器,它应该显示请求并转到Servlet。但不幸的是,我遇到了异常:java.lang.IllegalStateException:getReader()hasalreadybeencalledforthisrequestatorg.apache.catalina.connector.Request.getInputStream(Request.java:948)atorg.apache.catalina.connector.RequestFacade.getInputStream(RequestFacade.java:338)at
我正在尝试使用WorkManager1.0.0-alpha09。并收到此错误:Programtypealreadypresent:com.google.common.util.concurrent.ListenableFutureMessage{kind=ERROR,text=Programtypealreadypresent:com.google.common.util.concurrent.ListenableFuture,sources=[Unknownsourcefile],toolname=Optional.of(D8)}如果我使用1.0.0-alpha08或更低版本。我没有
我有三个类,其中一个是用户,这个用户有其他类实例。像这样;publicclassUser{@OneToMany(fetch=FetchType.LAZY,cascade=CascadeType.ALL)publicListaPosts;@OneToMany(fetch=FetchType.LAZY,cascade=CascadeType.ALL)publicListbPosts;}publicclassBPostextendsPost{@ManyToOne(fetch=FetchType.LAZY)publicUseruser;}publicclassAPostextendsPost{
我正在使用springmvc实现RESTAPI端点。我正在尝试发回带有cookie值的HTTP响应。这相当于我在rubySINATRA中需要做的事情:response.set_cookie('heroku-nav-data',:value=>params['nav-data'],:path=>'/')这是我迄今为止尝试过的,但没有奏效:@RequestMapping(value="/login",method=RequestMethod.POST)publicResponseEntitysingle_sign_on(@RequestBodyStringbody_sso){Strin
Exceptioninthread"main"com.mongodb.MongoException$DuplicateKey:{"serverUsed":"localhost/127.0.0.1:27017","err":"E11000duplicatekeyerrorindex:twitterdb03.LevelAFollowers.$iddupkey:{:ObjectId('52d5636de408652b4853a8fe')}","code":11000,"n":0,"connectionId":12,"ok":1.0}我正在使用mongo2.11.1在java中简单的写操作从来
Exceptioninthread"main"com.mongodb.MongoException$DuplicateKey:{"serverUsed":"localhost/127.0.0.1:27017","err":"E11000duplicatekeyerrorindex:twitterdb03.LevelAFollowers.$iddupkey:{:ObjectId('52d5636de408652b4853a8fe')}","code":11000,"n":0,"connectionId":12,"ok":1.0}我正在使用mongo2.11.1在java中简单的写操作从来
在我的代码中使portletRequestsession无效后,我收到以下异常Aug27,20137:07:13AMorg.apache.catalina.core.ApplicationDispatcherinvokeSEVERE:Servlet.service()forservletxyzapplicationServletthrewexceptionjava.lang.IllegalStateException:getAttribute:Sessionalreadyinvalidatedatorg.apache.catalina.session.StandardSession.g
我需要将带有自定义登录页面和数据库连接的SpringSecurity添加到我的SpringMVC项目中。我收到以下错误消息,根据其他问题的答案,我尝试更改代码,例如我将SpringSecuritySchema版本更改为4.0,但代码返回以下错误:将架构更改为4.0http://www.springframework.org/schema/security/spring-security-4.0.xsd错误Cannotinitializecontextbecausethereisalreadyarootapplicationcontextpresent-checkwhetheryouha