Apache CXF Web服务开发教程：SOAP与RESTful服务部署详解

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Apache CXF 是一个强大的企业服务总线（ESB）框架，专用于构建、部署 SOAP 和 RESTful Web 服务。它提供了一种灵活的方式来集成各种服务接口，并支持多种编程模型，包括Java、XML和HTTP。在本教程中，Naveen Balani 和 Rajeev Hathi 将引领你步入 CXF 的世界，帮助你在开发过程中理解并应用 CXF 的核心功能。本教程涵盖了以下几个关键知识点： 1. **CXF概述**：首先介绍 CXF 的背景、架构以及其在企业级应用中的角色。它如何通过Java的JAX-WS（Java API for XML Web Services）和JAXB（Java Architecture for XML Binding）技术实现Web服务的开发。 2. **SOAP服务开发**：学习如何创建SOAP服务，包括定义WSDL（Web Service Definition Language）文件，编写Java类作为服务端实现，以及使用CXF的Endpoint和Binding配置。 3. **RESTful服务开发**：了解RESTful设计原则，如何利用CXF的RESTEasy模块创建RESTful API，包括URI设计、HTTP方法映射和JSON数据交换。 4. **服务部署与配置**：学习如何将CXF服务部署到服务器上，如Tomcat或Jetty，以及配置安全、性能优化和故障恢复策略。 5. **工具和IDE集成**：掌握如何在Eclipse或IntelliJ IDEA等集成开发环境中使用CXF插件进行开发和调试。 6. **高级特性**：涵盖CXF的扩展性、异步处理、消息队列集成、以及服务端代理和客户端调用等方面的知识。 7. **案例研究**：通过实际项目演示，展示如何将所学知识应用于构建复杂的企业级系统，如微服务架构或者API Gateway。 8. **版权和法律声明**：强调版权保护和使用协议，确保遵循Packt Publishing的版权政策，避免未经许可的复制或传播。在整个教程过程中，读者将获得丰富的实践经验和理论指导，以便能够熟练地在IT项目中运用Apache CXF构建高效、可靠的Web服务。随着互联网技术的不断发展，理解和掌握CXF对于提高开发效率和企业系统集成能力至关重要。

Preface

[ 3 ]

Chapter 7: Deploying RESTful Services with CXF will explain how to deploy REST

services in a container like Tomcat using Spring conguration, and how to test out

the various operations exposed by the RESTFul application using CXF RESTful client

API using a web service development tool. We will look at how to enable exception

handling, JSON message support, and logging support for RESTful applications

using CFX framework.

By the end of this chapter the reader would be able utilize various CXF features for

developing RESTful services and how to leverage Spring conguration for deploying

RESTful service in the tomcat container.

Chapter 8: Working with CXF Tools will explain some of the commonly used CFX

tools that assist us in web services development. We will look at how to invoke a

real world .NET service over the internet using a Java client and JavaScript, create

web service implementation from WSDL les, generate WSDL les from web service

implementation, and validate the WSDL le for compliance.

By the end of this chapter the reader will be able to use different CXF tools to

develop a service.

Appendix A deals with how to set up the CXF environment, provides details on how

the source code for each chapter is organized, and shows how to run the source code

examples using the ANT tool and Maven Tool.

Appendix B provides an explanation of the basics of the Spring framework and IoC

concepts, along with an end-to-end example which utilizes Spring IoC concepts.

By the end of this Appendix chapter the reader will have a good understanding

of Spring capabilities used in the context of CXF web services development in

this book.

What you need for this book

You will need the following software to be installed before running the

code example:

• Java 5 or higher. Apache CXF requires JDK 5 or a later version. JDK 5 can be

downloaded from the following site:

http://java.sun.com/j2se/1.5.0/

download.jsp

• Tomcat 6.0 or higher. There is no strict requirement for Tomcat for CXF. In

fact, any servlet container that supports Java 5 or higher can be used with

CXF. For our illustrations, we will use Tomcat as our servlet container.

Tomcat version 6.0 can be downloaded from the following site: http://

tomcat.apache.org/download-60.cgi

Getting Familiar with CXF

We often require real world systems and applications to integrate with each other.

Application integration is one of the critical areas that you need to focus on during

application development, if your application involves integrating with third party or

external systems. Alternatively, depending on your requirements, you may want other

systems to access your application. Let's take an example of a credit card company

providing services to guarantee payments made by consumers. These services are

available over the Web, and consumers or applications, such as an online shopping

application, or an airline rm that accepts credit cards as payment for its services,

uses the credit card payment service for a consumer's payments. Since the credit

card services can be accessed by any application client such as a web browser or a

WAP (Wireless Application Protocol) enabled phone, and developed using any

programming language, there is a need for a standard-based communication where

the services offered can be used by any application, irrespective of any underlying

technology. This is where web services come into play, and to simplify the design

and development of web services, you have the option of using various web service

frameworks. Apache CXF is one such leading standard-based web services framework

whose goal is to simplify web services development.

In order to get started with the CXF framework, you rst need to understand the

concepts behind web services, the technology, and the standards that make up web

service and features provided by the CFX framework. This chapter will cover these

core concepts.

Specically, in this chapter we will cover the following topics:

• The core technology standards and concepts behind web services

• Approaches for web services development

• Overview of Apache CXF framework

• Features provided by Apache CXF framework

• Setting up Apache CFX environment

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