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如何将属性值注入使用注释配置的 Spring Bean？

[英]How can I inject a property value into a Spring Bean which was configured using annotations?

 原文  2008-11-25 15:22:34  8   18    java/ spring/ dependency-injection

问题描述

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

18 个解决方案

解决方案1
 296 已采纳  2008-12-04 07:41:12

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案2
 144  2011-10-06 14:02:59

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案3
 121  

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案4
 31  2012-10-31 15:19:05

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案5
 15  2008-11-25 17:25:27

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案6
 9  2008-11-26 07:19:32

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案7
 8  2015-01-09 20:01:27

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案8
 7  2016-05-21 03:58:00

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案9
 7  2016-10-25 19:56:09

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案10
 7  2009-02-23 11:08:44

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案11
 5  2008-11-25 17:22:27

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案12
 4  2009-12-17 14:28:28

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案13
 2  2013-01-02 12:39:35

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案14
 2  2013-06-18 04:40:00

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案15
 1  2016-10-20 18:31:47

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案16
 0  2013-03-13 18:05:50

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案17
 -1  2014-04-19 16:52:27

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

解决方案18
 -1  2020-06-29 08:11:11

I have a bunch of Spring beans which are picked up from the classpath via annotations, eg我有一堆 Spring bean，它们是通过注释从类路径中提取的，例如

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
    // Implementation omitted
}

In the Spring XML file, there's a PropertyPlaceholderConfigurer defined:在 Spring XML 文件中，定义了一个PropertyPlaceholderConfigurer ：

<bean id="propertyConfigurer" 
  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location" value="/WEB-INF/app.properties" />
</bean>

I want to inject one of the properties from app.properites into the bean shown above.我想将 app.properites 中的一个属性注入到上面显示的 bean 中。 I can't simply do something like我不能简单地做类似的事情

<bean class="com.example.PersonDaoImpl">
    <property name="maxResults" value="${results.max}"/>
</bean>

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations).因为 PersonDaoImpl 在 Spring XML 文件中没有特征（它是通过注释从类路径中提取的）。 I've got as far as the following:我有以下几点：

@Repository("personDao")
public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

    @Resource(name = "propertyConfigurer")
    protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    // Now how do I access results.max? 
    }
}

But it's not clear to me how I access the property I'm interested in from ppc ?但我不清楚如何从ppc访问我感兴趣的财产？

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