《Java Web 服务：构建与运行(影印版)》书评-杂志之家

内容简介

Java Web 服务:构建与运行(影印版)》提供了对Java的API的一个介绍，包括针对XML Web服务的JAX-WS和针对RESTful Web服务的JAX-RS。《Java Web服务：构建与运行》通过提供混合架构概述、完整的工作代码示例以及短而的编译、部署和执行应用程序的指示，采用明确实用的方法来处理这些技术。你将学习如何从头开始编写Web服务以及集成现有服务到你的Java应用程序中。有了这《Java Web 服务:构建与运行(影印版)》，你将：

· 理解基于SOAP的和REST样式的服务的区别

· 编写、部署和使用基于SOAP的核心Java服务

· 理解Web服务描述语言(WSDL)服务契约

· 认识SOAP消息的结构

· 学习如何交付基于Java的RESTful Web服务和消耗商业RESTful服务

· 了解对基于SOAP和基于REST的Web服务的安全要求

· 学习如何在各种环境下部署JAX-WS服务

不管是学生还是有经验的程序员，当你需要立即运用这些技术展开工作时，《Java Web服务：构建与运行》都是你需要的一本理想的简明指南。

作者简介

Martin Kalin, 德保罗大学计算机和数字媒体学院教授，拥有西北大学的博士学位。他撰写过关于C语言、C++和Java的书，并参与开发过大型分布式系统中的进程调度和产品配置。

在线预览

The HTTP start line comes first and specifies the request method, in this case thePOST method, which is typical of requests for dynamic resources such as webservices or other web application code (for example, a Java servlet) as opposed torequests for a static HTML page. In this case, a POST rather than a GET requestis needed because only a POST request has a body, which encapsulates the SOAPmessage. Next comes the request URL followed by the HTTP version, in this case1.1, that the requester understands. HTTP 1.1 is the current version.

Next come the HTTP headers, which are key/value pairs in which a colon (:) separates the key from the value. The order of the key/value pairs is arbitrary. The keyAccept occurs three times, with a MIME (Multipurpose Internet Mail Extensions) type/subtype as the value: text/xml, multipart/, and application/soap. These threepairs signal that the requester is ready to accept an arbitrary XML response, aresponse with arbitrarily many attachments of any type (a SOAP message can havearbitrarily many attachments), and a SOAP document, respectively. The HTTP keySOAPAction is often present in the HTTP header of a web service request and thekey's value may be the empty string, as in this case; but the value also might be thename of the requested web service operation.

Two CRLF (Carriage Return Line Feed) characters, which correspond to two Java\n characters, separate the HTTP headers from the HTTP body, which is requiredfor the POST verb but may be empty. In this case, the HTTP body contains theSOAP document, commonly called the SOAP envelope because the outermost ordocument element is named Envelope. In this SOAP envelope, the SOAP body contains a single element whose local name is getTimeAsString, which is the name ofthe web service operation that the client wants to invoke. The SOAP request envelope is simple in this example because the requested operation takes noarguments.