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spring xml中的propery 的name属性名自来源

今天在运用spring的PropertyPlaceholderConfigurer时发现一个有意思的内容,当你在applicationContext中配置一个PropertyPlaceholderConfigurer的bean时,有location和locations的属性,不明思意location对应一个.properties文件,
locations对应多个.properties文件,冲着想看一下PropertyPlaceholderConfigurer的实现机制,于是查看了spring的源码,发现在PropertyPlaceholderConfigurer中并没有location和locations的属性,于是一路向上在父类PropertiesLoaderSupport中找到了locations的属性,但是没有location属性,奇怪?但在PropertiesLoaderSupport中却有setLocation和setLocations两个方法:
/**
  * Set a location of a properties file to be loaded.
  * <p>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.
  * <p>Can point to classic properties files or to XML files
  * that follow JDK 1.5's properties XML format.
  */
 public void setLocations(Resource[] locations) {
  this.locations = locations;
 }
这样看来applicationContext.xml中的bean的property的name属性的值,并不是和对应类类中的属性内容是一致的


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