org.springframework.beans.factory.xml

类 DefaultBeanDefinitionDocumentReader

java.lang.Object

org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader

所有已实现的接口:

BeanDefinitionDocumentReader

public class DefaultBeanDefinitionDocumentReader
extends Object
implements BeanDefinitionDocumentReader

Default implementation of the BeanDefinitionDocumentReader interface that reads bean definitions according to the "spring-beans" DTD and XSD format (Spring's default XML bean definition format).

The structure, elements, and attribute names of the required XML document are hard-coded in this class. (Of course a transform could be run if necessary to produce this format). <beans> does not need to be the root element of the XML document: this class will parse all bean definition elements in the XML file, regardless of the actual root element.

从以下版本开始:

18.12.2003

作者:

Rod Johnson, Juergen Hoeller, Rob Harrop, Erik Wiersma

字段概要

字段

限定符和类型	字段和说明
static String	ALIAS_ATTRIBUTE
static String	ALIAS_ELEMENT
static String	BEAN_ELEMENT
static String	IMPORT_ELEMENT
protected Log	logger
static String	NAME_ATTRIBUTE
static String	NESTED_BEANS_ELEMENT
static String	PROFILE_ATTRIBUTE
static String	RESOURCE_ATTRIBUTE

构造器概要

构造器

构造器和说明
DefaultBeanDefinitionDocumentReader()

方法概要

限定符和类型	方法和说明
protected BeanDefinitionParserDelegate	createDelegate(XmlReaderContext readerContext, Element root, BeanDefinitionParserDelegate parentDelegate)
protected void	doRegisterBeanDefinitions(Element root) Register each bean definition within the given root <beans/> element.
protected Object	extractSource(Element ele) Invoke the SourceExtractor to pull the source metadata from the supplied Element.
protected XmlReaderContext	getReaderContext() Return the descriptor for the XML resource that this parser works on.
protected void	importBeanDefinitionResource(Element ele) Parse an "import" element and load the bean definitions from the given resource into the bean factory.
protected void	parseBeanDefinitions(Element root, BeanDefinitionParserDelegate delegate) Parse the elements at the root level in the document: "import", "alias", "bean".
protected void	postProcessXml(Element root) Allow the XML to be extensible by processing any custom element types last, after we finished processing the bean definitions.
protected void	preProcessXml(Element root) Allow the XML to be extensible by processing any custom element types first, before we start to process the bean definitions.
protected void	processAliasRegistration(Element ele) Process the given alias element, registering the alias with the registry.
protected void	processBeanDefinition(Element ele, BeanDefinitionParserDelegate delegate) Process the given bean element, parsing the bean definition and registering it with the registry.
void	registerBeanDefinitions(Document doc, XmlReaderContext readerContext) This implementation parses bean definitions according to the "spring-beans" XSD (or DTD, historically).

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

BEAN_ELEMENT

public static final String BEAN_ELEMENT

另请参阅:

常量字段值

NESTED_BEANS_ELEMENT

public static final String NESTED_BEANS_ELEMENT

另请参阅:

常量字段值

ALIAS_ELEMENT

public static final String ALIAS_ELEMENT

另请参阅:

常量字段值

NAME_ATTRIBUTE

public static final String NAME_ATTRIBUTE

另请参阅:

常量字段值

ALIAS_ATTRIBUTE

public static final String ALIAS_ATTRIBUTE

另请参阅:

常量字段值

IMPORT_ELEMENT

public static final String IMPORT_ELEMENT

另请参阅:

常量字段值

RESOURCE_ATTRIBUTE

public static final String RESOURCE_ATTRIBUTE

另请参阅:

常量字段值

PROFILE_ATTRIBUTE

public static final String PROFILE_ATTRIBUTE

另请参阅:

常量字段值

logger

protected final Log logger

构造器详细资料

DefaultBeanDefinitionDocumentReader

public DefaultBeanDefinitionDocumentReader()

方法详细资料

registerBeanDefinitions

public void registerBeanDefinitions(Document doc,
                                    XmlReaderContext readerContext)

This implementation parses bean definitions according to the "spring-beans" XSD (or DTD, historically).

Opens a DOM Document; then initializes the default settings specified at the <beans/> level; then parses the contained bean definitions.

指定者:

registerBeanDefinitions 在接口中 BeanDefinitionDocumentReader

参数:

doc - the DOM document

readerContext - the current context of the reader (includes the target registry and the resource being parsed)

getReaderContext

protected final XmlReaderContext getReaderContext()

Return the descriptor for the XML resource that this parser works on.

extractSource

@Nullable
protected Object extractSource(Element ele)

Invoke the SourceExtractor to pull the source metadata from the supplied Element.

doRegisterBeanDefinitions

protected void doRegisterBeanDefinitions(Element root)

Register each bean definition within the given root <beans/> element.

createDelegate

protected BeanDefinitionParserDelegate createDelegate(XmlReaderContext readerContext,
                                                      Element root,
                                                      @Nullable
                                                      BeanDefinitionParserDelegate parentDelegate)

parseBeanDefinitions

protected void parseBeanDefinitions(Element root,
                                    BeanDefinitionParserDelegate delegate)

Parse the elements at the root level in the document: "import", "alias", "bean".

参数:

root - the DOM root element of the document

importBeanDefinitionResource

protected void importBeanDefinitionResource(Element ele)

Parse an "import" element and load the bean definitions from the given resource into the bean factory.

processAliasRegistration

protected void processAliasRegistration(Element ele)

Process the given alias element, registering the alias with the registry.

processBeanDefinition

protected void processBeanDefinition(Element ele,
                                     BeanDefinitionParserDelegate delegate)

Process the given bean element, parsing the bean definition and registering it with the registry.

preProcessXml

protected void preProcessXml(Element root)

Allow the XML to be extensible by processing any custom element types first, before we start to process the bean definitions. This method is a natural extension point for any other custom pre-processing of the XML.

The default implementation is empty. Subclasses can override this method to convert custom elements into standard Spring bean definitions, for example. Implementors have access to the parser's bean definition reader and the underlying XML resource, through the corresponding accessors.

另请参阅:

getReaderContext()

postProcessXml

protected void postProcessXml(Element root)

Allow the XML to be extensible by processing any custom element types last, after we finished processing the bean definitions. This method is a natural extension point for any other custom post-processing of the XML.

The default implementation is empty. Subclasses can override this method to convert custom elements into standard Spring bean definitions, for example. Implementors have access to the parser's bean definition reader and the underlying XML resource, through the corresponding accessors.

另请参阅:

getReaderContext()