12

我需要获取 .properties 文件中的属性列表。例如,如果有以下 .properties 文件:

users.admin.keywords = admin
users.admin.regexps = test-5,test-7
users.admin.rules = users.admin.keywords,users.admin.regexps

users.root.keywords = newKeyWordq
users.root.regexps = asdasd,\u0432[\u044By][\u0448s]\u043B\u0438\u0442[\u0435e]
users.root.rules = users.root.keywords,users.root.regexps,rules.creditcards

users.guest.keywords = guest
users.guest.regexps = *
users.guest.rules = users.guest.keywords,users.guest.regexps,rules.creditcards

rules.cc.creditcards = 1234123412341234,11231123123123123,ca
rules.common.regexps = pas
rules.common.keywords = asd

结果,我想得到一个 ArrayList ,它由以下字段的名称组成: users.admin.keywords, users.admin.regexps, users.admin.rules等等。正如您所注意到的,我需要使用 apache.commons.config 来执行此操作

4

3 回答 3

17

您可以使用如下:

Configuration configuration = new PropertiesConfiguration(filename);
Iterator<String> keys = configuration.getKeys();
List<String> keyList = new ArrayList<String>();
while(keys.hasNext()) {
    keyList.add(keys.next());
}
于 2013-04-23T12:12:29.483 回答
5
Properties prop = new Properties();
prop.load(new FileInputStream("prop.properties"));
Set<Map.Entry<Object, Object>> set = prop.entrySet();
List<Object> list = new ArrayList<>();
for (Map.Entry<Object, Object> entry : prop.entrySet())
{
   list.add(entry.getKey());
}
System.out.println(list);

使用 Apache Commons 版本 <2.1:

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

为 Apache Commons 版本 2.1 编辑:

List<String> list = new ArrayList<>();
Parameters params = new Parameters();
FileBasedConfigurationBuilder<FileBasedConfiguration> builder =
    new FileBasedConfigurationBuilder<FileBasedConfiguration>
    (PropertiesConfiguration.class)
    .configure(params.properties()
    .setFileName("prop.properties"));
try
{
    Configuration config = builder.getConfiguration();
    Iterator<String> keys = config.getKeys();
    while(keys.hasNext()){
      String key = (String) keys.next();
      list.add(key);
    }
}
catch(ConfigurationException cex)
{
    // handle exception here
}
于 2013-04-23T12:11:18.060 回答
3

您可以使用getKeys()

Iterator<String>它在属性文件中的所有键上返回一个。

于 2013-04-23T12:05:03.383 回答