Key Features Get up to date with the def ini ng characteristics of Spring Boot 2.0 in Spring Framework 5 Learn to perform Reactive programmi ng with Spring Boot Learn about developer tools, AMQP messagi ng , WebSockets, security, Mo ng oDB data access, REST, and more Book Description Spring Boot provides a variety of features that address today's business needs alo ng with today's scalable requirements. In this book, you will learn how to leverage powerful databases and Spring Boot 's state-of-the-art WebFlux framework. This practical guide will help you get up and runni ng with all the latest features of Spring Boot , especially the new Re actor -based toolkit. The book starts off by helpi ng you build a simple app, then shows you how to bundle and deploy it to the cloud. From here, we take you through reactive programmi ng , showi ng you how to interact with controllers and templates and handle data access. Once you're done, you can start writi ng unit tests, slice tests, embedded container tests, and even auto configuration tests. We go into detail about developer tools, AMQP messagi ng , WebSockets, security, and deployment. You will learn how to secure your application usi ng both routes and method-based rules. By the end of the book, you'll have built a social media platform from which to apply the lessons you have learned to any problem. If you want a good understandi ng of buildi ng scalable applications usi ng the core functionality of Spring Boot , this is the book for you. What you will learn Create powerful, production-grade applications and services with m ini mal fuss Support multiple environments with one artifact, and add production-grade support with features Find out how to tweak your apps through different properties Use custom metrics to track the number of messages published and cons umed Enhance the security model of your apps Make use of reactive programmi ng in Spring Boot Build anythi ng from lightweight unit tests to fully runni ng embedded web container integration tests

报错信息： Error starti ng ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled. 2020-05-15 00:05:12 ERROR [main]o.s.b.d.Loggi ng FailureAnalysisReporter [Loggi ng FailureAnalysisReporter.java : 40] - APPLICATION FAILED

Cons ider def ini ng a bea n of type ‘javax.activation.DataSource’ in your configuration . 报错 问题 报错信息意思说的是：考虑在confi中定义一个’javax.activation.DataSource’类型的 bea n 我是由于导入的包不对 修改后的见下图，运行之后一切正常 还有 问题 欢迎互动，感谢关注！ Chapter 1. Spring i ng into action 1.1. Simplifyi ng Java development 1.1.1. Unleashi ng the power of POJOs 1.1.2. Injecti ng dependencies 1.1.3. Applyi ng aspects 1.1.4. Eliminati ng boilerplate code with templates 1.2. Conta ini ng your bea ns 1.2.1. Worki ng with an application context 1.2.2. A bea n’s life 1.3. Surveyi ng the Spring landscape 1.3.1. Spring modules 1.3.2. The Spring portfolio 1.4. What’s new in Spring 1.4.1. What was new in Spring 3.1? 1.4.2. What was new in Spring 3.2? 1.4.3. What’s new in Spring 4.0? 1.5. Summary Chapter 2. Wiri ng bea ns 2.1. Explori ng Spring ’s configuration options 2.2. Automatically wiri ng bea ns 2.2.1. Creati ng discoverable bea ns 2.2.2. Nami ng a component-scanned bea n 2.2.3. Setti ng a base package for component scanni ng 2.2.4. Annotati ng bea ns to be automatically wired 2.2.5. Verifyi ng automatic configuration 2.3. Wiri ng bea ns with Java 2.3.1. Creati ng a configuration class 2.3.2. Declari ng a simple bea n 2.3.3. Injecti ng with JavaConfig 2.4. Wiri ng bea ns with XML 2.4.1. Creati ng an XML configuration specification 2.4.2. Declari ng a simple < bea n> 2.4.3. Ini tializi ng a bea n with cons tructor injection 2.4.4. Setti ng properties 2.5. Importi ng and mixi ng configuration s 2.5.1. Referenci ng XML configuration in JavaConfig 2.5.2. Referenci ng JavaConfig in XML configuration 2.6. Summary Chapter 3. Advanced wiri ng 3.1. Environments and profiles 3.1.1. Configuri ng profile bea ns 3.1.2. Activati ng profiles 3.2. Conditional bea ns 3.3. Addressi ng ambiguity in autowiri ng 3.3.1. Designati ng a primary bea n 3.3.2. Qualifyi ng autowired bea ns 3.4. Scopi ng bea ns 3.4.1. Worki ng with request and session scope 3.4.2. Declari ng scoped proxies in XML 3.5. Runtime value injection 3.5.1. Injecti ng external values 3.5.2. Wiri ng with the Spring Expression La ng uage 3.6. Summary Chapter 4. Aspect-oriented Spring 4.1. What is aspect-oriented programmi ng ? 4.1.1. Def ini ng AOP terminology 4.1.2. Spring ’s AOP support 4.2. Selecti ng join points with pointcuts 4.2.1. Writi ng pointcuts 4.2.2. Selecti ng bea ns in pointcuts 4.3. Creati ng annotated aspects 4.3.1. Def ini ng an aspect 4.3.2. Creati ng around advice 4.3.3. Handli ng parameters in advice 4.3.4. Annotati ng introductions 4.4. Declari ng aspects in XML 4.4.1. Declari ng before and after advice 4.4.2. Declari ng around advice 4.4.3. Passi ng parameters to advice 4.4.4. Introduci ng new functionality with aspects 4.5. Injecti ng AspectJ aspects 4.6. Summary 2. Spring on the web Chapter 5. Buildi ng Spring web applications 5.1. Getti ng started with Spring MVC 5.1.1. Followi ng the life of a request 5.1.2. Setti ng up Spring MVC 5.1.3. Introduci ng the Spittr application 5.2. Writi ng a simple controller 5.2.1. Testi ng the controller 5.2.2. Def ini ng class-level request handli ng 5.2.3. Passi ng model data to the view 5.3. Accepti ng request input 5.3.1. Taki ng query parameters 5.3.2. Taki ng input via path parameters 5.4. Processi ng forms 5.4.1. Writi ng a form-handli ng controller 5.4.2. Validati ng forms 5.5. Summary Chapter 6. Renderi ng web views 6.1. Understandi ng view resolution 6.2. Creati ng JSP views 6.2.1. Configuri ng a JSP-ready view resolver 6.2.2. Usi ng Spring ’s JSP libraries 6.3. Def ini ng a layout with Apache Tiles views 6.3.1. Configuri ng a Tiles view resolver 6.4. Worki ng with Thymeleaf 6.4.1. Configuri ng a Thymeleaf view resolver 6.4.2. Def ini ng Thymeleaf templates 6.5. Summary Chapter 7. Advanced Spring MVC 7.1. Alternate Spring MVC configuration 7.1.1. Customizi ng DispatcherServlet configuration 7.1.2. Addi ng additional servlets and filters 7.1.3. Declari ng DispatcherServlet in web.xml 7.2. Processi ng multipart form data 7.2.1. Configuri ng a multipart resolver 7.2.2. Handli ng multipart requests 7.3. Handli ng exceptions 7.3.1. Mappi ng exceptions to HTTP status codes 7.3.2. Writi ng exception-handli ng methods 7.4. Advisi ng controllers 7.5. Carryi ng data across redirect requests 7.5.1. Redirecti ng with URL templates 7.5.2. Worki ng with flash attributes 7.6. Summary Chapter 8. Worki ng with Spring Web Flow 8.1. Configuri ng Web Flow in Spring 8.1.1. Wiri ng a flow executor 8.1.2. Configuri ng a flow registry 8.1.3. Handli ng flow requests 8.2. The components of a flow 8.2.1. States 8.2.2. Transitions 8.2.3. Flow data 8.3. Putti ng it all together: the pizza flow 8.3.1. Def ini ng the base flow 8.3.2. Collecti ng customer information 8.3.3. Buildi ng an order 8.3.4. Taki ng payment 8.4. Securi ng web flows 8.5. Summary Chapter 9. Securi ng web applications 9.1. Getti ng started with Spring Security 9.1.1. Understandi ng Spring Security modules 9.1.2. Filteri ng web requests 9.1.3. Writi ng a simple security configuration 9.2. Selecti ng user details services 9.2.1. Worki ng with an in-memory user store 9.2.2. Authenticati ng against database tables 9.2.3. Applyi ng LDAP-backed authentication 9.2.4. Configuri ng a custom user service 9.3. Intercepti ng requests 9.3.1. Securi ng with Spring Expressions 9.3.2. Enforci ng channel security 9.3.3. Preventi ng cross-site request f org ery 9.4. Authenticati ng users 9.4.1. Addi ng a custom login page 9.4.2. Enabli ng HTTP Basic authentication 9.4.3. Enabli ng remember-me functionality 9.4.4. Loggi ng out 9.5. Securi ng the view 9.5.1. Usi ng Spring Security’s JSP tag library 9.5.2. Worki ng with Thymeleaf’s Spring Security dialect 9.6. Summary 3. Spring in the back end Chapter 10. Hitti ng the database with Spring and JDBC 10.1. Learni ng Spring ’s data-access philosophy 10.1.1. Getti ng to know Spring ’s data-access exception hierarchy 10.1.2. Templati ng data access 10.2. Configuri ng a data source 10.2.1. Usi ng JNDI data sources 10.2.2. Usi ng a pooled data source 10.2.3. Usi ng JDBC driver-based data sources 10.2.4. Usi ng an embedded data source 10.2.5. Usi ng profiles to select a data source 10.3. Usi ng JDBC with Spring 10.3.1. Tackli ng runaway JDBC code 10.3.2. Worki ng with JDBC templates 10.4. Summary Chapter 11. Persisti ng data with object-relational mappi ng 11.1. Integrati ng Hibernate with Spring 11.1.1. Declari ng a Hibernate session f actor y 11.1.2. Buildi ng Spring -free Hibernate 11.2. Spring and the Java Persistence API 11.2.1. Configuri ng an entity manager f actor y 11.2.2. Writi ng a JPA-based repository 11.3. Automatic JPA repositories with Spring Data 11.3.1. Def ini ng query methods 11.3.2. Declari ng custom queries 11.3.3. Mixi ng in custom functionality 11.4. Summary Chapter 12. Worki ng with No SQL databases 12.1. Persisti ng documents with Mo ng oDB 12.1.1. Enabli ng Mo ng oDB 12.1.2. Annotati ng model type s for Mo ng oDB persistence 12.1.3. Accessi ng Mo ng oDB with Mo ng oTemplate 12.1.4. Writi ng a Mo ng oDB repository 12.2. Worki ng with graph data in Neo4j 12.2.1. Configuri ng Spring Data Neo4j 12.2.2. Annotati ng graph entities 12.2.3. Worki ng with Neo4jTemplate 12.2.4. Creati ng automatic Neo4j repositories 12.3. Worki ng with key-value data in Redis 12.3.1. Connecti ng to Redis 12.3.2. Worki ng with RedisTemplate 12.3.3. Setti ng key and value serializers 12.4. Summary Chapter 13. Cachi ng data 13.1. Enabli ng cache support 13.1.1. Configuri ng a cache manager 13.2. Annotati ng methods for cachi ng 13.2.1. Populati ng the cache 13.2.2. Removi ng cache entries 13.3. Declari ng cachi ng in XML 13.4. Summary Chapter 14. Securi ng methods 14.1. Securi ng methods with annotations 14.1.1. Restricti ng method access with @Secured 14.1.2. Usi ng JSR-250’s @RolesAllowed with Spring Security 14.2. Usi ng expressions for method-level security 14.2.1. Expressi ng method access rules 14.2.2. Filteri ng method inputs and outputs 14.3. Summary 4. Integrati ng Spring Chapter 15. Worki ng with remote services 15.1. An overview of Spring remoti ng 15.2. Worki ng with RMI 15.2.1. Exporti ng an RMI service 15.2.2. Wiri ng an RMI service 15.3. Exposi ng remote services with Hessian and Burlap 15.3.1. Exposi ng bea n functionality with Hessian/Burlap 15.3.2. Accessi ng Hessian/Burlap services 15.4. Usi ng Spring ’s HttpInvoker 15.4.1. Exposi ng bea ns as HTTP services 15.4.2. Accessi ng services via HTTP 15.5. Publishi ng and cons umi ng web services 15.5.1. Creati ng Spring -enabled JAX-WS endpoints 15.5.2. Proxyi ng JAX-WS services on the client side 15.6. Summary Chapter 16. Creati ng REST APIs with Spring MVC 16.1. Getti ng REST 16.1.1. The fundamentals of REST 16.1.2. How Spring supports REST 16.2. Creati ng your first REST endpoint 16.2.1. Negotiati ng resource representation 16.2.2. Worki ng with HTTP message converters 16.3. Servi ng more than resources 16.3.1. Communicati ng errors to the client 16.3.2. Setti ng headers in the response 16.4. Cons umi ng REST resources 16.4.1. Explori ng RestTemplate’s operations 16.4.2. GETti ng resources 16.4.3. Retrievi ng resources 16.4.4. Extracti ng response metadata 16.4.5. PUTti ng resources 16.4.6. DELETEi ng resources 16.4.7. POSTi ng resource data 16.4.8. Receivi ng object responses from POST requests 16.4.9. Receivi ng a resource location after a POST request 16.4.10. Excha ng i ng resources 16.5. Summary Chapter 17. Messagi ng in Spring 17.1. A brief introduction to asynchronous messagi ng 17.1.1. Sendi ng messages 17.1.2. Assessi ng the benefits of asynchronous messagi ng 17.2. Sendi ng messages with JMS 17.2.1. Setti ng up a message broker in Spring 17.2.2. Usi ng Spring ’s JMS template 17.2.3. Creati ng message-driven POJOs 17.2.4. Usi ng message-based RPC 17.3. Messagi ng with AMQP 17.3.1. A brief introduction to AMQP 17.3.2. Configuri ng Spring for AMQP messagi ng 17.3.3. Sendi ng messages with RabbitTemplate 17.3.4. Receivi ng AMQP messages