Java 如何使用 JSP 中 PropertyPlaceholderConfigurer 中指定的属性文件中的属性
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How to use property from property file specified in PropertyPlaceholderConfigurer in JSP
提问by glaz666
In my application context I have defined properties file:
在我的应用程序上下文中，我定义了属性文件：
<context:property-placeholder location="classpath:application.properties" />
I want to get value of the property defined in that file on JSP page. Is there a way to do that in the way
我想在 JSP 页面上获取该文件中定义的属性的值。有没有办法做到这一点
${something.myProperty}?
采纳答案by sinuhepop
PropertyPlaceholderConfigurercan only parse placeholders in Spring configuration (XML or annotations). Is very common in Spring applications use a Propertiesbean. You can access it from your view this way (assuming you are using InternalResourceViewResolver):
PropertyPlaceholderConfigurer只能解析 Spring 配置（XML 或注释）中的占位符。在 Spring 应用程序中使用Propertiesbean是很常见的。您可以通过这种方式从您的视图访问它（假设您正在使用InternalResourceViewResolver）：
<bean id="properties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="locations">
<list><value>classpath:config.properties</value></list>
</property>
</bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"/>
<property name="exposedContextBeanNames">
<list><value>properties</value></list>
</property>
</bean>
Then, in your JSP, you can use ${properties.myProperty}or ${properties['my.property']}.
然后，在您的 JSP 中，您可以使用${properties.myProperty}或${properties['my.property']}。
回答by Matt
To use with multiple locations in a list which might not be present as can be done with the context:property-placeholder bean:
要使用列表中可能不存在的多个位置，可以使用 context:property-placeholder bean：
<beans:bean id="appProperties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<beans:property name="ignoreResourceNotFound" value="true" />
<beans:property name="locations">
<beans:list>
<beans:value>classpath:application.properties</beans:value>
<beans:value>classpath:environment.properties</beans:value>
<beans:value>classpath:environment-${env}.properties</beans:value>
</beans:list>
</beans:property>
</beans:bean>
回答by anttix
To use recursive property placeholder expansion in views, you need a different solution, take a look at this answer:
要在视图中使用递归属性占位符扩展，您需要不同的解决方案，看看这个答案：
回答by btpka3
回答by user3331318
This will show you the tables of the current schema (which you are logged in):
这将显示当前架构的表（您已登录）：
select table_name from user_tables order by table_name;
This will show you the tables of schema , for which you have select rights at least:
这将向您显示 schema 表，您至少具有选择权限：
select owner, table_name from all_tables where owner='<owner>' order by owner, table_name;
回答by Nikhil Kotak
`<bean class="org.springframework.context.support.ReloadableResourceBundleMessageSource"
id="messageSource"
p:basenames="WEB-INF/i18n/site"
p:fallbackToSystemLocale="false"/>`
Now this is your Properties File
现在这是您的属性文件
`site.name=Cool Bananas`
And. Here goes your JSP
和。你的JSP 来了
`<%@ taglib uri="http://www.springframework.org/tags" prefix="spring" %>
<html>
<head>
<title><spring:message code="site.name"/></title>
</head>
<body>
</body>
</html>`
