org.springframework.jndi

类 JndiLocatorDelegate

java.lang.Object

org.springframework.jndi.JndiAccessor

org.springframework.jndi.JndiLocatorSupport

org.springframework.jndi.JndiLocatorDelegate

public class JndiLocatorDelegate
extends JndiLocatorSupport

JndiLocatorSupport subclass with public lookup methods, for convenient use as a delegate.

从以下版本开始:

3.0.1

作者:

Juergen Hoeller

字段概要

字段

限定符和类型	字段和说明
static String	IGNORE_JNDI_PROPERTY_NAME System property that instructs Spring to ignore a default JNDI environment, i.e.

从类继承的字段 org.springframework.jndi.JndiLocatorSupport

CONTAINER_PREFIX

从类继承的字段 org.springframework.jndi.JndiAccessor

logger

构造器概要

构造器

构造器和说明
JndiLocatorDelegate()

方法概要

限定符和类型	方法和说明
static JndiLocatorDelegate	createDefaultResourceRefLocator() Configure a JndiLocatorDelegate with its "resourceRef" property set to true, meaning that all names will be prefixed with "java:comp/env/".
static boolean	isDefaultJndiEnvironmentAvailable() Check whether a default JNDI environment, as in a Java EE environment, is available on this JVM.
Object	lookup(String jndiName) Perform an actual JNDI lookup for the given name via the JndiTemplate.
<T> T	lookup(String jndiName, Class<T> requiredType) Perform an actual JNDI lookup for the given name via the JndiTemplate.

从类继承的方法 org.springframework.jndi.JndiLocatorSupport

convertJndiName, isResourceRef, setResourceRef

从类继承的方法 org.springframework.jndi.JndiAccessor

getJndiEnvironment, getJndiTemplate, setJndiEnvironment, setJndiTemplate

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

IGNORE_JNDI_PROPERTY_NAME

public static final String IGNORE_JNDI_PROPERTY_NAME

System property that instructs Spring to ignore a default JNDI environment, i.e. to always return false from isDefaultJndiEnvironmentAvailable().

The default is "false", allowing for regular default JNDI access e.g. in JndiPropertySource. Switching this flag to true is an optimization for scenarios where nothing is ever to be found for such JNDI fallback searches to begin with, avoiding the repeated JNDI lookup overhead.

Note that this flag just affects JNDI fallback searches, not explicitly configured JNDI lookups such as for a DataSource or some other environment resource. The flag literally just affects code which attempts JNDI searches based on the JndiLocatorDelegate.isDefaultJndiEnvironmentAvailable() check: in particular, StandardServletEnvironment and StandardPortletEnvironment.

从以下版本开始:

4.3

另请参阅:

isDefaultJndiEnvironmentAvailable(), JndiPropertySource, 常量字段值

构造器详细资料

JndiLocatorDelegate

public JndiLocatorDelegate()

方法详细资料

lookup

public Object lookup(String jndiName)
              throws NamingException

从类复制的说明: JndiLocatorSupport

Perform an actual JNDI lookup for the given name via the JndiTemplate.

If the name doesn't begin with "java:comp/env/", this prefix is added if "resourceRef" is set to "true".

覆盖:

lookup 在类中 JndiLocatorSupport

参数:

jndiName - the JNDI name to look up

返回:

the obtained object

抛出:

NamingException - if the JNDI lookup failed

另请参阅:

JndiLocatorSupport.setResourceRef(boolean)

lookup

public <T> T lookup(String jndiName,
                    @Nullable
                    Class<T> requiredType)
             throws NamingException

从类复制的说明: JndiLocatorSupport

Perform an actual JNDI lookup for the given name via the JndiTemplate.

If the name doesn't begin with "java:comp/env/", this prefix is added if "resourceRef" is set to "true".

覆盖:

lookup 在类中 JndiLocatorSupport

参数:

jndiName - the JNDI name to look up

requiredType - the required type of the object

返回:

the obtained object

抛出:

NamingException - if the JNDI lookup failed

另请参阅:

JndiLocatorSupport.setResourceRef(boolean)

createDefaultResourceRefLocator

public static JndiLocatorDelegate createDefaultResourceRefLocator()

Configure a JndiLocatorDelegate with its "resourceRef" property set to true, meaning that all names will be prefixed with "java:comp/env/".

另请参阅:

JndiLocatorSupport.setResourceRef(boolean)

isDefaultJndiEnvironmentAvailable

public static boolean isDefaultJndiEnvironmentAvailable()

Check whether a default JNDI environment, as in a Java EE environment, is available on this JVM.

返回:

true if a default InitialContext can be used, false if not