blocks|key|209905|text|并不完全符合你的意图。一定要检查Apache+Commons配置库http://commons.apache.org/configuration/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|209906|一个键可以有多个值，就像在key=value1、value2中一样，并且可以像configuration.getAsStringArray("key")一样将其读入数组|style|CODE|209907|entityMap|0|LINK|mutability|MUTABLE|url|http://commons.apache.org/configuration/^0|X|14|0|0|13|11|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@$A|U|B|V|F|G]]|9|@]|C|$]]|$1|H|3|-4|5|6|7|W|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]]]

Didn't exactly get your intent.
Do check Apache Commons configuration library <a href="http://commons.apache.org/configuration/">http://commons.apache.org/configuration/</a>

You can have multiple values against a key as in 
key=value1,value2 
and you can read this into an array as <code>configuration.getAsStringArray("key")</code>

blocks|key|209617|text|要么定义一个不是潜在值的分隔符，要么学习使用XML。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|209618|如果您仍然坚持使用属性，请使用将返回所有键列表的方法之一。键看起来有三个部分，一个组标识符(foo，bar)，一个索引(1，2)，然后是一个元素名(filename，expire)。获取所有的密钥，将它们分解为组件部分。为每种类型的标识符创建一个列表，在处理该列表时，使用该标识符来确定要添加到哪个列表。像你说的那样创建成对的元素，然后简单地添加到列表中！如果索引顺序很重要，可以将其作为字段添加到成对的元素中，或者在处理之前对键进行排序。|209619|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Either define a delimiter that will not be a potential value or learn to use XML.

If you still insist on using properties use one of the methods that will return a list of all keys. Your key appears to have three parts a group identifier (foo, bar) an index (1, 2) and then an element name (filename, expire). Get all the keys break them into their component parts. Create a List for each type of identifier, when processing the list use the identifier to determine which List to add to. Create you paired elements as you said and simply add to the list! If the index order is important either add that as a field to your paired elements or sort the keys before processing.

blocks|key|209639|text|正如用户“Skip+Head”已经指出的，csv或任何表格文件格式将更适合您的情况。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|209640|如果这是您的一个选择，那么您可能会对这个Table实现感兴趣。|offset|length|209641|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/utils-apl-derived/wiki/Table^0|0|K|5|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

As user 'Skip Head' already pointed out, csv or a any table file format would be a better fitt in your case.

If it is an option for you, maybe this <a href="http://code.google.com/p/utils-apl-derived/wiki/Table" rel="nofollow">Table</a> implementation might interest you.

blocks|key|209667|text|我强烈推荐使用Apache+Commons+(http://commons.apache.org/configuration/)。它能够使用XML文件作为配置文件。使用XML结构可以轻松地将数组表示为值列表，而不是特殊编号的属性。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|209668|entityMap|0|LINK|mutability|MUTABLE|url|http://commons.apache.org/configuration/^0|N|14|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I highly recommend using Apache Commons (http://commons.apache.org/configuration/). It has the ability to use an XML file as a configuration file. Using an XML structure makes it easy to represent arrays as lists of values rather than specially numbered properties.

blocks|key|3855152|text|我可以建议使用分隔符，并使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3855153|String.split(delimiter)|offset|length|style|CODE|3855154|示例属性文件：|3855155|MON=0800#Something#Something1，Something2|BOLD|3855156|prop.load(new+FileInputStream("\\\\Myseccretnetwork\\Project\\props.properties"));
String[]values+=+prop.get("MON").toString().split("#");|code-block|syntax|javascript|3855157|希望这能有所帮助|3855158|entityMap^0|0|0|N|0|0|0|14|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@$D|X|E|Y|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|Z|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|10|8|@$D|11|E|12|F|L]]|9|@]|A|$]]|$1|M|3|N|5|O|7|13|8|@]|9|@]|A|$P|Q]]|$1|R|3|S|5|6|7|14|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|U|$]]

I can suggest using delimiters and using the 

<code>String.split(delimiter)</code>

Example properties file:

MON=0800#Something#Something1, Something2

<pre><code>prop.load(new FileInputStream("\\\\Myseccretnetwork\\Project\\props.properties"));
String[]values = prop.get("MON").toString().split("#");
</code></pre>

Hope that helps

blocks|key|1955349|text|这是另一种实现机制的方法。在这里，我们考虑数组应该从0开始，并且在索引之间没有空格|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1955350|++++/**
+++++*+get+a+string+property's+value
+++++*+@param+propKey+property+key
+++++*+@param+defaultValue+default+value+if+the+property+is+not+found
+++++*+@return+value
+++++*/
++++public+static+String+getSystemStringProperty(String+propKey,
++++++++++++String+defaultValue)+{
++++++++String+strProp+=+System.getProperty(propKey);
++++++++if+(strProp+==+null)+{
++++++++++++strProp+=+defaultValue;
++++++++}
++++++++return+strProp;
++++}

++++/**
+++++*+internal+recursive+method+to+get+string+properties+(array)
+++++*+@param+curResult+current+result
+++++*+@param+paramName+property+key+prefix
+++++*+@param+i+current+indice
+++++*+@return+array+of+property's+values
+++++*/
++++private+static+List<String>+getSystemStringProperties(List<String>+curResult,+String+paramName,+int+i)+{
++++++++String+paramIValue+=+getSystemStringProperty(paramName+%2B+"."+%2B+String.valueOf(i),+null);
++++++++if+(paramIValue+==+null)+{
++++++++++++return+curResult;
++++++++}
++++++++curResult.add(paramIValue);
++++++++return+getSystemStringProperties(curResult,+paramName,+i%2B1);
++++}

++++/**
+++++*+get+the+values+from+a+property+key+prefix
+++++*+@param+paramName+property+key+prefix
+++++*+@return+string+array+of+values
+++++*/
++++public+static+String[]+getSystemStringProperties(
++++++++++++String+paramName)+{
++++++++List<String>+stringProperties+=+getSystemStringProperties(new+ArrayList<String>(),+paramName,+0);
++++++++return+stringProperties.toArray(new+String[stringProperties.size()]);
++++}|code-block|syntax|javascript|1955351|下面是一种测试方法：|1955352|++++@Test
++++public+void+should_be_able_to_get_array_of_properties()+{
++++++++System.setProperty("my.parameter.0",+"ooO");
++++++++System.setProperty("my.parameter.1",+"oO");
++++++++System.setProperty("my.parameter.2",+"boo");
++++++++//+WHEN+
++++++++String[]+pluginParams+=+PropertiesHelper.getSystemStringProperties("my.parameter");

++++++++//+THEN
++++++++assertThat(pluginParams).isNotNull();
++++++++assertThat(pluginParams).containsExactly("ooO","oO","boo");
++++++++System.out.println(pluginParams[0].toString());
++++}|1955353|希望这能有所帮助|1955354|欢迎所有评论..|1955355|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

here is another way to do by implementing yourself the mechanism.
here we consider that the array should start with 0 and would have no hole between indice 

<pre><code> /**
 * get a string property's value
 * @param propKey property key
 * @param defaultValue default value if the property is not found
 * @return value
 */
 public static String getSystemStringProperty(String propKey,
 String defaultValue) {
 String strProp = System.getProperty(propKey);
 if (strProp == null) {
 strProp = defaultValue;
 }
 return strProp;
 }

 /**
 * internal recursive method to get string properties (array)
 * @param curResult current result
 * @param paramName property key prefix
 * @param i current indice
 * @return array of property's values
 */
 private static List&lt;String&gt; getSystemStringProperties(List&lt;String&gt; curResult, String paramName, int i) {
 String paramIValue = getSystemStringProperty(paramName + "." + String.valueOf(i), null);
 if (paramIValue == null) {
 return curResult;
 }
 curResult.add(paramIValue);
 return getSystemStringProperties(curResult, paramName, i+1);
 }

 /**
 * get the values from a property key prefix
 * @param paramName property key prefix
 * @return string array of values
 */
 public static String[] getSystemStringProperties(
 String paramName) {
 List&lt;String&gt; stringProperties = getSystemStringProperties(new ArrayList&lt;String&gt;(), paramName, 0);
 return stringProperties.toArray(new String[stringProperties.size()]);
 }
</code></pre>

Here is a way to test :

<pre><code> @Test
 public void should_be_able_to_get_array_of_properties() {
 System.setProperty("my.parameter.0", "ooO");
 System.setProperty("my.parameter.1", "oO");
 System.setProperty("my.parameter.2", "boo");
 // WHEN 
 String[] pluginParams = PropertiesHelper.getSystemStringProperties("my.parameter");

 // THEN
 assertThat(pluginParams).isNotNull();
 assertThat(pluginParams).containsExactly("ooO","oO","boo");
 System.out.println(pluginParams[0].toString());
 }
</code></pre>

hope this helps

and all remarks are welcome..

blocks|key|1955392|text|我有自定义加载。属性必须定义为：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1955393|key.0=value0
key.1=value1
...|code-block|syntax|javascript|1955394|自定义加载：|1955395|/**+Return+array+from+properties+file.+Array+must+be+defined+as+"key.0=value0",+"key.1=value1",+...+*/
public+List<String>+getSystemStringProperties(String+key)+{

++++//+result+list
++++List<String>+result+=+new+LinkedList<>();

++++//+defining+variable+for+assignment+in+loop+condition+part
++++String+value;

++++//+next+value+loading+defined+in+condition+part
++++for(int+i+=+0;+(value+=+YOUR_PROPERTY_OBJECT.getProperty(key+%2B+"."+%2B+i))+!=+null;+i%2B%2B)+{
++++++++result.add(value);
++++}

++++//+return
++++return+result;
}|1955396|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I have custom loading. Properties must be defined as:

<pre><code>key.0=value0
key.1=value1
...
</code></pre>

Custom loading:

<pre><code>/** Return array from properties file. Array must be defined as "key.0=value0", "key.1=value1", ... */
public List&lt;String&gt; getSystemStringProperties(String key) {

 // result list
 List&lt;String&gt; result = new LinkedList&lt;&gt;();

 // defining variable for assignment in loop condition part
 String value;

 // next value loading defined in condition part
 for(int i = 0; (value = YOUR_PROPERTY_OBJECT.getProperty(key + "." + i)) != null; i++) {
 result.add(value);
 }

 // return
 return result;
}
</code></pre>

blocks|key|3855288|text|将+YAML+文件用于属性，这支持将属性作为数组。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3855289|关于YAML的快速浏览：|3855290|3855291|是JSON的超集，它可以做JSON能做的一切%2B更多|blockquote|3855292|3855293|3855294|作为Array|3855295|YAML+Validation|unordered-list-item|3855296|
，在多行验证中简单读取|3855297|Long属性|3855298|3855299|entityMap^0|0|1|2|4|7|I|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|16|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|17|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|18|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|19|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|1B|8|@]|D|@]|E|$]]|$1|P|3|Q|5|R|7|1C|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|1D|8|@]|D|@]|E|$]]|$1|U|3|V|5|R|7|1E|8|@]|D|@]|E|$]]|$1|W|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]|$1|X|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]]|Y|$]]

Use YAML files for properties, this supports properties as an array.

Quick glance about YAML:

<blockquote>
 A superset of JSON, it can do everything JSON can + more
</blockquote>

<ol>
<li>Simple to read</li>
<li>Long properties into multiline values</li>
<li>Supports comments</li>
<li>Properties as Array</li>
<li>YAML Validation</li>
</ol>

blocks|key|1955455|text|实际上，所有的答案都是错误的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1955456|简单：foo.[0]filename|offset|length|style|CODE|1955457|entityMap^0|0|3|F|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

Actually all answers are wrong

Easy: <code>foo.[0]filename</code>

blocks|key|3855346|text|我建议使用属性文件，引用CSV文件。然后将CSV文件解析为集合/数组等。属性文件似乎不适合这种数据。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3855347|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I'd suggest having the properties file, reference a CSV file.
Then parse the CSV file into a collection/array etc instead.
Properties file seems wrong fit for this kind of data.

I'm currently making a .properties file that needs to be loaded and transformed into an array. But there is a possibility of anywhere from 0-25 of each of the property keys to exist. I tried a few implementations but i'm just stuck at doing this cleanly. Anyone have any ideas?

<pre><code>foo.1.filename=foo.txt
foo.1.expire=200

foo.2.filename=foo2.txt
foo.2.expire=10

etc more foo's

bar.1.filename=bar.txt
bar.1.expire=100
</code></pre>

where I'll assemble the filename/expire pairings into a data object, as part of an array for each parent property element like <code>foo[myobject]</code>

Formatting of the properties file can change, I'm open to ideas.

Better way to represent array in java properties file

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我目前正在制作一个需要加载并转换为数组的.properties文件。但是每个属性键都有可能存在于0-25之间。我尝试了几个实现，但我只是坚持干净利落地做这件事。有谁有什么想法吗？foo.1.filename=foo.txtfoo.1.expire=200foo.2.filename=foo2.txtfoo.2.expi...

问在java属性文件中表示数组的更好方法
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问在java属性文件中表示数组的更好方法EN