Java Web Services Up and Running, 2nd Edition A Quick, Practical, and Thorough Introduction (Martin Kalin)（Z-Library）

【One-Line Pitch】 A hands-on, code-first guide to building and consuming both REST-style and SOAP-based web services in Java, ideal for developers who want working examples they can compile, deploy, and run rather than abstract theory. 【Book Arc】 - **Opening (~0%–10%)**: Frames why web services matter—automating web data access and integrating disparate/legacy systems—and contrasts REST vs. SOAP, SOA vs. older DOA approaches, plus HTTP, XML, and JSON fundamentals. - **Early (~10%–32%)**: Builds the first working RESTful service (a JSP script with backend POJOs), introduces Java HTTP clients, the curl utility, and practical setup of Tomcat and an Ant build/deploy script. - **Middle (~32%–55%)**: Dives into the service side—HttpServlet, JAX-RS (Jersey), Restlet, and @WebServiceProvider APIs—showing how to generate XML and JSON payloads and implement full CRUD operations. - **Late (~55%–85%)**: Moves to SOAP-based services with JAX-WS, covering handlers, faults, binary data, the transport level, and Axis2, plus client-to-service flows and signature verification. - **Ending (~85%–100%)**: Addresses web services security—wire-level HTTPS, encryption, the HTTPS handshake, container-managed security, and enforcing secure access to services. 【Key Takeaways】 - **REST and SOAP are complementary, not competing** (Opening): the book deliberately avoids crowning one "best" approach, instead clarifying when each fits your service's needs. - **HTTP is the backbone of RESTful design** (Early): URIs are opaque identifiers, and verbs like GET/POST map naturally onto servlet do-methods, shaping how you model resources. - **Multiple Java APIs solve the same problem** (Middle): HttpServlet, JAX-RS/Jersey, Restlet, and @WebServiceProvider each offer distinct trade-offs for publishing RESTful services. - **JSP scripts vs. servlets is a real decision** (Middle): JSP is convenient for experimentation since the server compiles it, but explicit HttpServlet subclasses are best practice for production. - **CRUD operations anchor service examples** (Middle): sorting Prediction objects makes it easy to verify that POST, PUT, and DELETE behave correctly against a ConcurrentMap store. - **SOAP adds layers REST lacks** (Late): handlers, fault levels, and binary-data transport give SOAP-based services structured error handling and extensibility. - **Security is a first-class concern** (Ending): HTTPS provides confidentiality, integrity, and authentication via its handshake, and container-managed security enforces access control. - **Tooling matters as much as code** (Early): Tomcat (with its Catalina container) and the provided Ant script handle compiling, packaging, and deploying WAR files. 【Reading Tips】 - **Deep-read Chapters 1–2** if you're new to web services; they establish HTTP, REST, and the servlet model that everything else builds on. - **Skim the API survey** in Chapter 2 if you already know one framework—focus on the one you'll actually use (JAX-RS/Jersey is the most emphasized). - **Treat code examples as the spine**: compile and run them rather than reading passively; the Ant script and Tomcat setup are part of the learning. - **Save the security chapter for last** but don't skip it—HTTPS and container-managed security are where production readiness lives. - **Watch the REST/SOAP balance**: the second edition leans REST-heavy, so SOAP readers should budget extra time for the later chapters. 【Coverage Limits】 This guide is synthesized from stratified excerpts covering the preface, table of contents, and portions of Chapters 1–2; later chapters (SOAP handlers, security details) are represented mainly through headings and summaries, so specific code and figures there are not fully covered.