java bean plus

A core feature of the Bean Validation (JSR 303)--java EE 6, which defines a metadata model and API for entity validation. Its default metadata source is annotations, but developers can extend it through an XML descriptor. The Validation API does not rely on a particular application layer or programming model, so that the same set of validations can be shared by all tiers of the application. It also provides

-- Selected from ibatis SQL MAPS Development Guide Java Bean simple tutorial The sqlmap architecture requires a solid understanding of Java Beans. Fortunately, there are not many Java Bean APIs related to sqlmap. Therefore, if you have never touched

ensures that the method is returned directly to theBean instead of making a real call to it every time.　　For example, suppose you introduce an additional cdplayerbean, which is exactly the same as the previous bean:If the call to Sgtpeppers () is like any other Java method call, then each CDPlayer instance will have its own unique instance of Sgtpeppers. It makes sense if we're talking about actual CD players and CD CDs. If you have two CD players, t

Based on Java configuration options, you can write most of the spring without configuration XML, but with the help of several Java-based annotations explained. Starting with Spring3.0, we support the use of Java code instead of XML to configure spring, and Java-based configuration provides many of the benefits that spr

Java exception problem No bean named 'sessionfactory 'is defined and initialize a collection of role, sessionFactory "No bean named 'sessionfactory 'is defined" in java frequently appears in the SHH framework or in the underlying layer of Sping + JPA using HIbernate annotation; the exception occurs because sessionFacto

format, TT will verify the validity of the data (usually the type of train is a fixed number of type code, less change).In web development, such request parameter verification is a lot of, usually after the front-end of the parameter check, the back end is still need to re-rigorous verification. Then for such non-business code can be extracted out, do data validation alone, if the verification passed, then continue the next business processing, do not pass the corresponding processing.2. How t

, and Alias1,alias2,alias3,alias4 is an alias, which can be used as the bean's key value;6, you can use the The difference between ref and IDREFIn spring, both the Idref property and the ref attribute can be injected into the constructor-arg element and the property element, so what's the difference between it?Consider the following configuration:In fact, IDREF injects the ID of the target bean instead of the instance of the target

); Druiddatasource.settestwhileidle (Testwhileidle); Druiddatasource.settestonborrow (Testonborrow); Druiddatasource.settestonreturn (Testonreturn); Druiddatasource.setpoolpreparedstatements (poolpreparedstatements); Druiddatasource.setmaxpoolpreparedstatementperconnectionsize (maxpoolpreparedstatementperconnectionsize); return druiddatasource; } @Bean (name = "Dbh2sqlsessionfact

This is a Java Bean builder that generates Java beans using a text file, which may be called a bean definition file. We may use a lot of data objects (value objects) in the development process, most of which are encapsulated into one bean. Although the major The IDE provid

Learn Extjs5 with me (29--add module and menu definition [2 build java Bean])create the corresponding bean file in Java for the 4 modules added in the previous section. Once the above table is set up, you need to create a Java bean