java WebService
In recent years, web services have emerged as a popular technology for remote method calls. Technically, a web service has two components:
A service that can be accessed with the SOAP transport protocol
A description of the service in the WSDL format
SOAP is an XML protocol for invoking remote methods, similar to the protocol that RMI uses for the communication between clients and servers. Just as you can program RMI applications without knowing anything about the details of the RMI protocol, you don't really need to know any details about SOAP to call a web service.
WSDL is an interface description language. It too is based on XML. A WSDL document describes the interface of a web service: the methods that can be called, and their parameter and return types. In this section, we generate a WSDL document from a service implemented in Java. This document contains all the information that a client program needs to invoke the service, whether it is written in Java or another programming language.
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PO(persistant object) 持久对象
在 o/r映射的时候出现的概念，如果没有o/r映射，没有这个概念存在了。通常对应数据模型(数据库),本身还有部分业务逻辑的处理。可以看成是与数据库中的表相映射的java对象。最简单的PO就是对应数据库中某个表中的一条记录，多个记录可以用PO的集合。PO中应该不包含任何对数据库的操作。
......
public class SHA1 {
private final int[] abcde = {
0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0
};
// 摘要数据存储数组
&nb ......
来自：http://www.anymobile.org
1、摘要..........................................................................1
2、改善服务器的性能...........................................................1
3、分析器原理...................................................................2
4、JProfiler 简介... ......
JAVA开发者最常去的20个英文网站
1.[http://www.javaalmanac.com] – Java开发者年鉴一书的在线版本. 要想快速查到某种Java技巧的用法及示例代码, 这是一个不错的去处.
2.[http://www.onjava.com] – O’Reilly的Java网站. 每周都有新文章.
3.[http://java.sun.com] – 官方的Java开发者网站 &ndash ......
