程序包 cn.taketoday.expression.spel.support

类 StandardTypeLocator

java.lang.Object

cn.taketoday.core.DefaultAliasRegistry

cn.taketoday.expression.spel.support.StandardTypeLocator

所有已实现的接口:

AliasRegistry, TypeLocator

public class StandardTypeLocator
extends DefaultAliasRegistry
implements TypeLocator

A simple implementation of TypeLocator that uses the context ClassLoader (or any ClassLoader set upon it). It supports 'well-known' packages: So if a type cannot be found, it will try the registered imports to locate it.

从以下版本开始:

4.0

作者:

Andy Clement, Juergen Hoeller, Harry Yang

字段概要

从类继承的字段 cn.taketoday.core.DefaultAliasRegistry

log

构造器概要

构造器

构造器	说明
StandardTypeLocator()	Create a StandardTypeLocator for the default ClassLoader (typically, the thread context ClassLoader).
StandardTypeLocator(ClassLoader classLoader)	Create a StandardTypeLocator for the given ClassLoader.

方法概要

修饰符和类型	方法	说明
Class<?>	findType(String typeName)	Resolve a class name.
Class<?>	getClassFor(String className)
List<String>	getImportPrefixes()	Return a list of all the import prefixes registered with this StandardTypeLocator.
void	importClass(Class<?> classToImport)	Import a class.
void	importClass(String name)	Import a class.
void	registerAlias(Class<?> classToImport, String... alias)
void	registerImport(String prefix)	Register a new import prefix that will be used when searching for unqualified types.
void	removeImport(String prefix)	Remove that specified prefix from this locator's list of imports.

从类继承的方法 cn.taketoday.core.DefaultAliasRegistry

allowAliasOverriding, canonicalName, checkForAliasCircle, getAliases, getAliasList, hasAlias, isAlias, registerAlias, removeAlias, resolveAliases

从类继承的方法 java.lang.Object

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

构造器详细资料

StandardTypeLocator

public StandardTypeLocator()

Create a StandardTypeLocator for the default ClassLoader (typically, the thread context ClassLoader).

StandardTypeLocator

public StandardTypeLocator(@Nullable
 ClassLoader classLoader)

Create a StandardTypeLocator for the given ClassLoader.

参数:

classLoader - the ClassLoader to delegate to

方法详细资料

registerImport

public void registerImport(String prefix)

Register a new import prefix that will be used when searching for unqualified types. Expected format is something like "java.lang".

参数:

prefix - the prefix to register

removeImport

public void removeImport(String prefix)

Remove that specified prefix from this locator's list of imports.

参数:

prefix - the prefix to remove

getImportPrefixes

public List<String> getImportPrefixes()

Return a list of all the import prefixes registered with this StandardTypeLocator.

返回:

a list of registered import prefixes

importClass

public void importClass(String name)
                 throws ExpressionException

Import a class.

参数:

name - The full class name of the class to be imported

抛出:

ExpressionException - if the name does not include a ".".

importClass

public void importClass(Class<?> classToImport)

Import a class.

另请参阅:

• ClassUtils.getSimpleName(String)

registerAlias

public void registerAlias(Class<?> classToImport,
 String... alias)

findType

public Class<?> findType(String typeName)
                  throws EvaluationException

Resolve a class name.

指定者:

findType 在接口中 TypeLocator

参数:

typeName - The name of the class (without package name) to be resolved.

返回:

If the class has been imported previously, with importClass(java.lang.String) or registerImport(String), then its Class instance. Otherwise null.

抛出:

ExpressionException - if the class is abstract or is an interface, or not public.

EvaluationException - if there is a problem finding the type

getClassFor

@Nullable
public Class<?> getClassFor(String className)