把 null 加到 list里会怎么样？ List<String> list = new ArrayList<String>(); list.add(null); list.add(null); print(list.size()); //将打印：2 list.remove(null); print(list.size()); //将打印：1 随贴附送“清除null”的java方法 static <T> List<T> getNonNullElements(List<T> list){ List<T> resultList = new ArrayList<T>(); for(T t: list){ if(t != null){ resultList.add(t); } } return resultList; }
很多开源框架，包括高质量的hibernate, spring等，有时给出的出错信息都会有误导性。 错误实际是在A部分，框架却把错报在B部分。 这种情况下，你可以试着把你的改动先减到最低，测一下；再逐渐一步一步加回来，加一步，测一步。这样就可以定位到出错的原因
“a corporate infrastructure needed to maintain Google’s rapid growth as a company and on ensuring that quality remains high while product development cycle times are kept to a minimum.” “You have to have the culture (of innovation), and you have to get it right.”
如果wsimport帮你生成的class中没有firstName, lastName, middleName等正常的成员变量名，而是生成下面这样的东西： @XmlElementRefs({ @XmlElementRef(name = "middle-name", type = JAXBElement.class), @XmlElementRef(name = "last-name", type = JAXBElement.class), @XmlElementRef(name = "first-name", type = JAXBElement.class), }) protected List<JAXBElement<? extends Serializable>> content; 那原因就是： 你的WSDL中使用了重复的Element Name "It appears to be due to the same element name of PublicationReferenceType in different namespaces" http://forums.epo.org/open-patent-services-and-publication-server-web-service/topic815.html
From various readings and conversations I had, my understanding of Facebook’s current architecture is: * Web front-end written in PHP. Facebook’s HipHop [1] then converts it to C++ and compiles it using g++, thus providing a high performance templating and Web logic execution layer * Business logic is exposed as services using Thrift [2]. Some …
执行“wsimport -version” 即可 结果类似于这个样子：“JAX-WS RI 2.1.6 in JDK 6” 你可能想知道RI是什么意思。看下文： The Reference Implementation of JAX-WS is developed as an open source project and is part of project GlassFish, an open source Java EE application server. It is called JAX-WS RI.
官方网站没有定义，还得找wikipedia帮忙 http://en.wikipedia.org/wiki/Java_API_for_XML_Web_Services From Wikipedia, the free encyclopedia The Java API for XML Web Services (JAX-WS) is a Java programming language API for creating web services. It is part of the Java EE platform from Sun Microsystems. Like the other Java EE APIs, JAX-WS uses annotations, introduced in Java SE 5, to simplify the development and …
假设你有两个基于SOAP的web service, 一个叫 FooService, 另一个叫BarService 且这两个Service都使用 HelloBean作为web method的参数或方法值 而且你还希望你的客户只使用一套stub，也就是说客户端只有一个HelloBean.class 那么你就要让这两个web service使用同样的命名空间。否则，在下列这种情况下你会遇到异常： HelloBean bean = fooService.getHelloBean(); barService.saveHelloBean(bean); //JAXB会报命名空间异常，因为fooService产生的bean跟saveHelloBean()所需的bean在命名空间上不一样。
今天发现@Resource未能把属性注进来，浪费了一个下午找原因。 直到最后发现竟然是spring.xml里没有 "<context:annotation-config>" ! 真可悲，脑力越来越差了。
设置 Java -> Editor -> Mark Occurences