blocks|key|161507|text|%7C是正则表达式中的元字符。你需要避开它：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|161508|String[]+value_split+=+rat_values.split("\\%7C");|code-block|syntax|javascript|161509|entityMap^0|0|1|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

<p><code>|</code> is a metacharacter in regex.  You'd need to escape it:</p>

<pre><code>String[] value_split = rat_values.split("\\|");
</code></pre>


blocks|key|2756962|text|split以正则表达式为参数，%7C在正则表达式中有特殊含义。使用\\%7C而不是%7C来转义它。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2756963|entityMap^0|F|1|V|3|11|1|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

<p>split takes regex as a parameter.<code>|</code> has special meaning in regex.. use <code>\\|</code> instead of <code>|</code> to escape it.</p>


blocks|key|162600|text|或者..。Pattern#quote|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|162601|String[]+value_split+=+rat_values.split(Pattern.quote("%7C"));|code-block|syntax|javascript|162602|之所以发生这种情况，是因为String#split接受正则表达式|162603|%7C有一个special+meaning+in+regex。|162604|quote将返回正则表达式的字符串表示。|162605|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html#quote%2528java.lang.String%2529|1|http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#replaceAll%2528java.lang.String,%2520java.lang.String%2529|2|http://www.regular-expressions.info/characters.html^0|5|D|5|D|0|0|0|D|C|D|C|1|0|0|1|4|O|2|0|0|5|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@$9|15|A|16|1|17]]|E|$]]|$1|F|3|G|5|H|7|18|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|19|8|@$9|1A|A|1B|B|C]]|D|@$9|1C|A|1D|1|1E]]|E|$]]|$1|M|3|N|5|6|7|1F|8|@$9|1G|A|1H|B|C]]|D|@$9|1I|A|1J|1|1K]]|E|$]]|$1|O|3|P|5|6|7|1L|8|@$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1O|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]|Y|$5|T|U|V|E|$W|Z]]|10|$5|T|U|V|E|$W|11]]]]

<p>Or.. <a href="http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html#quote%28java.lang.String%29"><code>Pattern#quote</code></a>:</p>

<pre><code>String[] value_split = rat_values.split(Pattern.quote("|"));
</code></pre>

<p>This is happening because <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#replaceAll%28java.lang.String,%20java.lang.String%29"><code>String#split</code></a> accepts a <em>regex</em>:</p>

<p><code>|</code> has a <a href="http://www.regular-expressions.info/characters.html">special meaning in regex</a>.</p>

<p><code>quote</code> will return a String representation for the <em>regex</em>.</p>


blocks|key|2969708|text|String+rat_values+=+"Food+1+%7C+Service+3+%7C+Atmosphere+3+%7C+Value+for+money+1+";
++++String[]+value_split+=+rat_values.split("\\%7C");
++++for+(String+string+:+value_split)+{

++++++++System.out.println(string);

++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2969709|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>String rat_values = "Food 1 | Service 3 | Atmosphere 3 | Value for money 1 ";
    String[] value_split = rat_values.split("\\|");
    for (String string : value_split) {

        System.out.println(string);

    }
</code></pre>


blocks|key|2757043|text|使用Pattern.quote()|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2757044|String[]+value_split+=+rat_values.split(Pattern.quote("%7C"));

//System.out.println(Arrays.toString(rat_values.split(Pattern.quote("%7C"))));+//(FOR+GETTING+OUTPUT)|code-block|syntax|javascript|2757045|使用转义字符(用于元字符)|2757046|String[]+value_split+=+rat_values.split("\\%7C");
//System.out.println(Arrays.toString(rat_values.split("\\%7C")));+//(FOR+GETTING+OUTPUT)|2757047|使用StringTokenizer(用于避免正则表达式问题)|2757048|public+static+String[]+splitUsingTokenizer(String+Subject,+String+Delimiters)+
{
+++++StringTokenizer+StrTkn+=+new+StringTokenizer(Subject,+Delimiters);
+++++ArrayList<String>+ArrLis+=+new+ArrayList<String>(Subject.length());
+++++while(StrTkn.hasMoreTokens())
+++++{
+++++++ArrLis.add(StrTkn.nextToken());
+++++}
+++++return+ArrLis.toArray(new+String[0]);
}|2757049|使用模式类(java.util.regex.Pattern)|2757050|Arrays.asList(Pattern.compile("\\%7C").split(rat_values))
//System.out.println(Arrays.asList(Pattern.compile("\\%7C").split(rat_values)));+//(FOR+GETTING+OUTPUT)|2757051|输出|2757052|[Food+1+,++Service+3+,++Atmosphere+3+,++Value+for+money+1+]|2757053|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|14|8|@]|9|@]|A|$]]|$1|Q|3|R|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|16|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|17|8|@]|9|@]|A|$E|F]]|$1|W|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|X|$]]

<h2>Using Pattern.quote()</h2>

<pre><code>String[] value_split = rat_values.split(Pattern.quote("|"));

//System.out.println(Arrays.toString(rat_values.split(Pattern.quote("|")))); //(FOR GETTING OUTPUT)
</code></pre>

<h2>Using Escape characters(for metacharacters)</h2>

<pre><code>String[] value_split = rat_values.split("\\|");
//System.out.println(Arrays.toString(rat_values.split("\\|"))); //(FOR GETTING OUTPUT)
</code></pre>

<h2>Using StringTokenizer(For avoiding regular expression issues)</h2>

<pre><code>public static String[] splitUsingTokenizer(String Subject, String Delimiters) 
{
     StringTokenizer StrTkn = new StringTokenizer(Subject, Delimiters);
     ArrayList&lt;String&gt; ArrLis = new ArrayList&lt;String&gt;(Subject.length());
     while(StrTkn.hasMoreTokens())
     {
       ArrLis.add(StrTkn.nextToken());
     }
     return ArrLis.toArray(new String[0]);
}
</code></pre>

<h2>Using Pattern class(java.util.regex.Pattern)</h2>

<pre><code>Arrays.asList(Pattern.compile("\\|").split(rat_values))
//System.out.println(Arrays.asList(Pattern.compile("\\|").split(rat_values))); //(FOR GETTING OUTPUT)
</code></pre>

<h2>Output</h2>

<pre><code>[Food 1 ,  Service 3 ,  Atmosphere 3 ,  Value for money 1 ]
</code></pre>


<p>I'm not able to split values from this string: </p>

<p><code>"Food 1 | Service 3 | Atmosphere 3 | Value for money 1 "</code></p>

<p>Here's my current code:</p>

<pre><code>String rat_values = "Food 1 | Service 3 | Atmosphere 3 | Value for money 1 ";
String[] value_split = rat_values.split("|");
</code></pre>

<h3>Output</h3>

<blockquote>
  <p>[, F, o, o, d,  , 1,  , |,  , S, e, r, v, i, c, e,  , 3,  , |,  , A, t, m, o, s, p, h, e, r, e,  , 3,  , |,  , V, a, l, u, e,  , f, o, r,  , m, o, n, e, y,  , 1,  ]</p>
</blockquote>

<h3>Expected output</h3>

<blockquote>
  <p>Food 1<br>
  Service 3<br>
  Atmosphere 3<br>
  Value for money 1</p>
</blockquote>


Splitting string with pipe character ("|")

问使用竖线字符("|")拆分字符串
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