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How to get list of properties using apache.commons

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走了就别回头了
走了就别回头了 2021-02-14 02:48

I need to get the list of properties which are in the .properties file. For example, if have the following .properties file:

users.admin.keywords = admin
users.a
3条回答
  • 野的像风
    野的像风 (楼主)
    2021-02-14 03:26 

    Properties prop = new Properties();
prop.load(new FileInputStream("prop.properties"));
Set> set = prop.entrySet();
List list = new ArrayList<>();
for (Map.Entry entry : prop.entrySet())
{
   list.add(entry.getKey());
}
System.out.println(list);



    Using Apache Commons version <2.1:
    


    Configuration config = new PropertiesConfiguration("prop.properties");
List list = new ArrayList<>();
Iterator keys = config.getKeys();
while(keys.hasNext()){
    String key = (String) keys.next();
    list.add(key);
}

    


    Edited for Apache Commons Version 2.1:
    


    List list = new ArrayList<>();
Parameters params = new Parameters();
FileBasedConfigurationBuilder builder =
    new FileBasedConfigurationBuilder
    (PropertiesConfiguration.class)
    .configure(params.properties()
    .setFileName("prop.properties"));
try
{
    Configuration config = builder.getConfiguration();
    Iterator keys = config.getKeys();
    while(keys.hasNext()){
      String key = (String) keys.next();
      list.add(key);
    }
}
catch(ConfigurationException cex)
{
    // handle exception here
}

    
    
    
             
    
                                                        
    
            
            
    
              
                
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