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h1. Elasticsearch   h2. A Distributed(分布式) RESTful Search Engine   h3. "https://www.elastic.co/products/elasticsearch":https://www.elastic.co/products/elasticsearch   Elasticsearch is a distributed RESTful search engine built for the cloud. Features include:   * Distributed and Hig ...
Elasticsearch is a highly scalable open-source full-text search and analytics engine. Elasticsearch 是一个高拓展性、开源的全文搜索和分析引擎。 It allows you to store, search, and analyze big volumes(大体积) of data quickly and in near real time. 它允许你迅速乃 ...
使用的事务管理是   org.springframework.jdbc.datasource.DataSourceTransactionManager  一、刚开始事务是这样实现的     TransactionStatus ts = transactionManager.getTransaction(null); try { // 得到用户信息 User user = userMapper.selectByPrimaryKey(userId); user.setHealthBeans(user.getHealthBeans() == ...
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Maven in 5 MinutesMaven 5分钟教程Prerequisites前提:You must have an understanding of how to install software on your computer. If you do not know how to do this, 你已经理解如何在你电脑上安装软件。如果这个你还不知道怎么做,please ask someone at your office, school ...
                          Apache Maven  What is it?  -----------  Maven is a software project management and comprehension tool. Based on  Maven是一个软件项目管理和综合工具。  the concept of a Project Object Model (POM), Maven can manage a project's  基于项目对象模型概念,通过一个中央信息块,Maven 能够管理项目构建、发布和文档生成   build, reporting an ...
#+SETUPFILE: "doc/basho-doc-style.iorg"Welcome to Riak.* Overview综述  Riak is a distributed, decentralized data storage system.   Riak 是一个分布式的 分散数据的存储系统。  Below, you will find the "quick start" directions for setting up and  接下来,你 ...
第九讲:Spring的DataSource配置与JdbcTempla Spring Datasource配置 两种方式实现   <bean id ="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">    <!--  指定驱动类
    异常详情 Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'StudentsImpl' defined in class path resource [beans.xml]: Initialization of bean failed; nested exception isjava.lang.IllegalArgumentException: error at ::0 fo ...
一、      理解动态代理设计模式 代理模式,是常用的Java设计模式,他的特征是代理类与委托类有同样的接口,代理类主要负责为委托类预处理消息,过滤消息,把消息转发给委托类,以及事后处理消息等。代理类与委托类之间通常会存在关联关系,一个代理类的对象与一个委托类的对象关联,代理类的对象本身并不真正实现业务,而是通过调用委托类的对象相关方法,来提供特定的服务。 动态代理类的字节码在程序运行时由Java反射机制动态生成,无需程序员手工编写它的源代码。动态代理类不仅简化了编程工作,而且提高了软件系统的可扩展性,因为Java反射机制可以生成任意类型的动态代理类。Java.lang.reflec ...
 Abstract Bean         定义:abstract属性设置为true的bean,通常用作模版或者父类。          特点,定义的abstract bean不能用作其他地方的引用。可以不指定class属性。 @Component          效果等同于applicationContext中的<bean>          如果 @Component 与applicationContext中定义有相同的name的bean,则后者覆盖前者          使用注解应该在bean的xml文件头加入注解的支持,并且添加
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