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內容簡介

Java Web 服務:構建與運行(影印版)》提供了對Java的API的一個介紹，包括針對XML Web服務的JAX-WS和針對RESTful Web服務的JAX-RS。《Java Web服務：構建與運行》通過提供混合架構概述、完整的工作代碼示例以及短而的編譯、部署和執行應用程序的指示，采用明確實用的方法來處理這些技術。你將學習如何從頭開始編寫Web服務以及集成現有服務到你的Java應用程序中。有了這《Java Web 服務:構建與運行(影印版)》，你將：

· 理解基于SOAP的和REST樣式的服務的區別

· 編寫、部署和使用基于SOAP的核心Java服務

· 理解Web服務描述語言(WSDL)服務契約

· 認識SOAP消息的結構

· 學習如何交付基于Java的RESTful Web服務和消耗商業RESTful服務

· 了解對基于SOAP和基于REST的Web服務的安全要求

· 學習如何在各種環境下部署JAX-WS服務

不管是學生還是有經驗的程序員，當你需要立即運用這些技術展開工作時，《Java Web服務：構建與運行》都是你需要的一本理想的簡明指南。

作者簡介

Martin Kalin, 德保羅大學計算機和數字媒體學院教授，擁有西北大學的博士學位。他撰寫過關于C語言、C++和Java的書，并參與開發過大型分布式系統中的進程調度和產品配置。

在線預覽

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.