PropertyPlaceholderConfigurer属性配置文件 资源文件绑定

        
            
              classpath:jdbc.properties
              classpath:db.properties
            
        
  

或

     classpath:jdbc.properties

 

org.springframework.beans.factory.config.PropertyPlaceholderConfigurer源码为

/**
* Set a location of a properties file to be loaded.
* 
Can point to a classic properties file or to an XML file
* that follows JDK 1.5's properties XML format.
*/
public void setLocation(Resource location) {
   this.locations = new Resource[] {location};
}


/**
* Set locations of properties files to be loaded.
* 
Can point to classic properties files or to XML files
* that follow JDK 1.5's properties XML format.
* 
Note: Properties defined in later files will override
* properties defined earlier files, in case of overlapping keys.
* Hence, make sure that the most specific files are the last
* ones in the given list of locations.
*/
public void setLocations(Resource[] locations) {
   this.locations = locations;
}