我在我的项目中创建了一个资源文件。我想将资源文件中的值注入spring bean。我在 applicationContext.xml 中定义了资源文件的占位符。
<context:property-placeholder location="file:///${MRAPOR_PROPPATH}mRapor.properties" />
我可以将值注入到 applicationContext.xml 中声明的 bean,例如:
<bean
id="dataSource"
class="org.springframework.jndi.JndiObjectFactoryBean" >
<property
name="jndiName"
value="${database.jndiName}" />
<property
name="lookupOnStartup"
value="false" />
<property
name="cache"
value="true" />
<property
name="proxyInterface"
value="javax.sql.DataSource" />
</bean>
这很好用。但是,如果我使用 spring 注释声明 bean,我将无法注入值。
@Component("SecurityFilter")
public class SecurityFilter implements Filter {
public static final String USER = "USER_SESSION_KEY";
public static final String CENTRIFY_USERNAME_KEY = "REMOTE_USERNAME";
@Value("${url.logout}")//I get error here !!!!
private String logoutUrl;
//proper setters and getters.
}
你知道为什么我不能访问使用注释声明的 bean 中的值吗?
这是我的例外
weblogic.application.ModuleException:
at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1510)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:482)
at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:425)
at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52)
at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:119)
Truncated. see log file for complete stacktrace
Caused By: java.lang.IllegalArgumentException: Could not resolve placeholder 'url.logout' in string value [${url.logout}]
at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:173)
at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:125)
at org.springframework.beans.factory.config.PropertyPlaceholderConfigurer$PlaceholderResolvingStringValueResolver.resolveStringValue(PropertyPlaceholderConfigurer.java:255)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:748)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:745)