Spring Source Learning Note 1

The two most core classes in 1.Spring

1) defaultlistablebeanfactory

Xmlbeanfactory inherited from Defaultlistablebeanfactory,defaultlistablebeanfactory is the core part of the entire bean load and is the default implementation of Spring load and register bean

2) Xmlbeandefinitionreader

2. Sample Code

Beanfactory bf=new xmlbeanfactory (New Classpathresource ("Beanfactorytest.xml"));

Xmlbeanfactory.class
Public classXmlbeanfactoryextendsDefaultlistablebeanfactory {Private FinalXmlbeandefinitionreader Reader;  PublicXmlbeanfactory (Resource Resource)throwsbeansexception { This(Resource, (beanfactory)NULL); }     PublicXmlbeanfactory (Resource Resource, Beanfactory parentbeanfactory)throwsbeansexception {Super(parentbeanfactory);  This. Reader =NewXmlbeandefinitionreader ( This);  This. Reader. loadbeandefinitions    (Resource); }}

loadbeandefinitions (Resource Resource) throws Beandefinitionstoreexception {
    return this. loadbeandefinitions (New Encodedresource (Resource));
}

loadbeandefinitions (Encodedresource Encodedresource) {
....
　　InputSource InputSource = new InputSource (inputstream);//parsing an XML file by means of sax
....
　　This.doloadbeandefinitions (InputSource, Encodedresource.getresource ());

}

3. Encapsulation of configuration files

Implements Inputstreamresource

4.Abstractautowirecapablebeanfactory.ignoredependencyinterface()

Ignoring the automatic assembly function for a given interface

5. Load Bean

protected intDoloadbeandefinitions (InputSource InputSource, Resource Resource)throwsbeandefinitionstoreexception {Try {            intValidationmode = This. Getvalidationmodeforresource (resource);// Gets the validation mode of the XML file document Doc= This. Documentloader.loaddocument(InputSource, This. Getentityresolver (), This. ErrorHandler, Validationmode, This. Isnamespaceaware ());// load XML file return  This. registerbeandefinitions (Doc, Resource);// Returns information about the registered bean }Catch(beandefinitionstoreexception var5) {ThrowVAR5; } Catch(saxparseexception var6) {Throw NewXmlbeandefinitionstoreexception (Resource.getdescription (), "line" + var6.getlinenumber () + "in XML document from" + Res Ource + "is invalid", VAR6); } Catch(saxexception var7) {Throw NewXmlbeandefinitionstoreexception (Resource.getdescription (), "XML document from" + Resource + "is invalid", VAR7); } Catch(parserconfigurationexception var8) {Throw NewBeandefinitionstoreexception (Resource.getdescription (), "Parser configuration exception parsing XML from" +resource, VAR8); } Catch(IOException var9) {Throw NewBeandefinitionstoreexception (Resource.getdescription (), "IOException parsing XML document from" +resource, VAR9); } Catch(Throwable var10) {Throw NewBeandefinitionstoreexception (Resource.getdescription (), "Unexpected exception parsing XML document from" +resource, VAR10); }    }

1) Get the validation mode of the XML file

2) Load XML file

3) Return the information of the registered bean

Spring Source Learning Note 1