12 core technologies of Java EE

core technologies java ee

java The general direction of the project is JavaEE,JavaEE not only socket Programming , Specific include 12 The core technology of the project .

JAVAEE At the heart of API And components

JAVAEE The platform consists of a whole set of services (Services)、 Application program interface (APIs) And the Agreement constitutes , It is based on Web The multi tier application provides functional support , Following pair JAVAEE Medium 13 Technical specifications for a simple description ( Limited to space , Here is a brief description ):

1、JDBC(Java Database Connectivity) JDBC API It provides a unified way to access different databases , like ODBC equally ,JDBC Some details are blocked for developers , in addition ,JDCB Access to the database also has platform independence .

2、JNDI(Java Name and Directory Interface) JNDI API Used to execute name and directory services . It provides a consistent model for accessing and manipulating enterprise level resources such as DNS and LDAP, Local file system , Or objects in the application server .

3、EJB(Enterprise JavaBean) JAVAEE One of the reasons why technology has been widely valued by the media is EJB. They provide a framework to develop and implement distributed business logic , This significantly simplifies the development of scalable and highly complex enterprise applications .EJB The specification defines EJB When and how components interact with their containers . The container is responsible for providing public services , For example, directory service 、 Business management 、 Security 、 Resource buffer pool and fault tolerance . But it's worth noting here that ,EJB It's not about achieving JAVAEE The only way . It is because of JAVAEE Openness , So that some manufacturers can use one and EJB To achieve the same goal in a parallel way .

4、RMI(Remote Method Invoke) As its name suggests ,RMI Protocol calls methods on remote objects . It uses serialization to pass data between the client and the server .RMI It's a kind of quilt EJB The underlying protocol used .

5、Java IDL/CORBA stay Java IDL With the support of , Developers can translate Java and CORBA Integrate together . They can create Java Object and make it available in CORBA ORB To expand , Or they can create Java Class and other ORB Unfolded together CORBA Target customers . The latter method provides another way , Through it Java It can be used to integrate your new application with your old system .

6、JSP(Java Server Pages) JSP Page by HTML Code and embedded Java The code consists of . After the page is requested by the client, the server will respond to these Java Code to process , And then what will be generated HTML The page is returned to the client's browser .

7、Java Servlet Servlet It's a small Java Program , It expands Web The function of the server . As a server-side application , Start execution when requested , This sum CGI Perl The script is very similar .Servlet Most of the functions provided are related to JSP similar , But it's implemented in a different way .JSP Usually most HTML A small amount of... Is embedded in the code Java Code , and servlets All by Java Write and generate HTML.

8、XML(Extensible Markup Language) XML Is a language that can be used to define other markup languages . It is used to share data in different business processes . XML Development and Java It's independent of each other , however , It and Java The same goal is platform independence . By way of Java and XML The combination of , You can get a perfect platform independent solution .

9、JMS(Java Message Service) JMS It's an application interface for communicating with message oriented middleware (API). It supports both point-to-point domains , There is support for publishing / subscribe (publish/subscribe) Domain of type , And provide support for the following types : Approved messaging , Delivery of transactional messages , Consistent messaging and persistent subscriber support .JMS Additional information is provided One way to integrate your application with the old background system .

10、JTA(Java Transaction Architecture) JTA Defines a standard API, The application system can access all kinds of transaction monitoring .

11、JTS(Java Transaction Service) JTS yes CORBA OTS Basic implementation of transaction monitoring .JTS Specifies the implementation of the transaction manager . The transaction manager is supported at a high level Java Transaction API (JTA) standard , And at the lower level OMG OTS specification Of Java image .JTS The transaction manager is the application server 、 Explorer 、 Independent applications and communication resource managers provide transaction services .

12、JavaMail JavaMail It's for accessing the mail server API, It provides a set of abstract classes of mail server . Not only support SMTP The server , Also support IMAP The server . image newest 2020 Organize and collect some high frequency interview questions ( It's all documented ), There are a lot of dry goods , contain mysql,netty,spring, Threads ,spring cloud、jvm、 Source code 、 The algorithm is explained in detail , There's also a detailed learning plan , Interview questions, etc , If you need to get this content, please add Q Your appearance :909038429 /./* Welcome to join java communication Q Your appearance :909038429 Blow water and chat together

本文为[osc_ forty-eight million eight hundred and thirteen thousand fo]所创,转载请带上原文链接,感谢

  1. 【计算机网络 12(1),尚学堂马士兵Java视频教程
  2. 【程序猿历程,史上最全的Java面试题集锦在这里
  3. 【程序猿历程(1),Javaweb视频教程百度云
  4. Notes on MySQL 45 lectures (1-7)
  5. [computer network 12 (1), Shang Xuetang Ma soldier java video tutorial
  6. The most complete collection of Java interview questions in history is here
  7. [process of program ape (1), JavaWeb video tutorial, baidu cloud
  8. Notes on MySQL 45 lectures (1-7)
  9. 精进 Spring Boot 03:Spring Boot 的配置文件和配置管理,以及用三种方式读取配置文件
  10. Refined spring boot 03: spring boot configuration files and configuration management, and reading configuration files in three ways
  11. 精进 Spring Boot 03:Spring Boot 的配置文件和配置管理,以及用三种方式读取配置文件
  12. Refined spring boot 03: spring boot configuration files and configuration management, and reading configuration files in three ways
  13. 【递归,Java传智播客笔记
  14. [recursion, Java intelligence podcast notes
  15. [adhere to painting for 386 days] the beginning of spring of 24 solar terms
  16. K8S系列第八篇(Service、EndPoints以及高可用kubeadm部署)
  17. K8s Series Part 8 (service, endpoints and high availability kubeadm deployment)
  18. 【重识 HTML (3),350道Java面试真题分享
  19. 【重识 HTML (2),Java并发编程必会的多线程你竟然还不会
  20. 【重识 HTML (1),二本Java小菜鸟4面字节跳动被秒成渣渣
  21. [re recognize HTML (3) and share 350 real Java interview questions
  22. [re recognize HTML (2). Multithreading is a must for Java Concurrent Programming. How dare you not
  23. [re recognize HTML (1), two Java rookies' 4-sided bytes beat and become slag in seconds
  24. 造轮子系列之RPC 1:如何从零开始开发RPC框架
  25. RPC 1: how to develop RPC framework from scratch
  26. 造轮子系列之RPC 1:如何从零开始开发RPC框架
  27. RPC 1: how to develop RPC framework from scratch
  28. 一次性捋清楚吧,对乱糟糟的,Spring事务扩展机制
  29. 一文彻底弄懂如何选择抽象类还是接口,连续四年百度Java岗必问面试题
  30. Redis常用命令
  31. 一双拖鞋引发的血案,狂神说Java系列笔记
  32. 一、mysql基础安装
  33. 一位程序员的独白:尽管我一生坎坷,Java框架面试基础
  34. Clear it all at once. For the messy, spring transaction extension mechanism
  35. A thorough understanding of how to choose abstract classes or interfaces, baidu Java post must ask interview questions for four consecutive years
  36. Redis common commands
  37. A pair of slippers triggered the murder, crazy God said java series notes
  38. 1、 MySQL basic installation
  39. Monologue of a programmer: despite my ups and downs in my life, Java framework is the foundation of interview
  40. 【大厂面试】三面三问Spring循环依赖,请一定要把这篇看完(建议收藏)
  41. 一线互联网企业中,springboot入门项目
  42. 一篇文带你入门SSM框架Spring开发,帮你快速拿Offer
  43. 【面试资料】Java全集、微服务、大数据、数据结构与算法、机器学习知识最全总结,283页pdf
  44. 【leetcode刷题】24.数组中重复的数字——Java版
  45. 【leetcode刷题】23.对称二叉树——Java版
  46. 【leetcode刷题】22.二叉树的中序遍历——Java版
  47. 【leetcode刷题】21.三数之和——Java版
  48. 【leetcode刷题】20.最长回文子串——Java版
  49. 【leetcode刷题】19.回文链表——Java版
  50. 【leetcode刷题】18.反转链表——Java版
  51. 【leetcode刷题】17.相交链表——Java&python版
  52. 【leetcode刷题】16.环形链表——Java版
  53. 【leetcode刷题】15.汉明距离——Java版
  54. 【leetcode刷题】14.找到所有数组中消失的数字——Java版
  55. 【leetcode刷题】13.比特位计数——Java版
  56. oracle控制用户权限命令
  57. 三年Java开发,继阿里,鲁班二期Java架构师
  58. Oracle必须要启动的服务
  59. 万字长文!深入剖析HashMap,Java基础笔试题大全带答案
  60. 一问Kafka就心慌?我却凭着这份,图灵学院vip课程百度云