Java 手机号码正则表达式验证

小灰灰 2022-07-12 03:09 2505阅读 0赞

1.正则表达式的字符串表示 
String mobileRegex = "^1(3|4|5|7|8)\\\\d\{9\}$"; 
字符^意义：表示匹配的字符必须在最前边； 
字符$意义：表示待匹配串的结束位置； 
字符\\d\{5,9\}意义：\\d是数字，\{5,9\}是5-9位，如果只是验证手机号，且校验的正则表达式如下： 
/^1\[3|5|8\]\[0-9\]\\d\{4,8\}$/ ； 
不妨写成 /^1\[3|5|8\]\\d\{9\}$/ ； 
 
2.对手机号字符串的校验 
String mobileRegex = "^1(3|4|5|7|8)\\\\d\{9\}$"; 
if (csprop.matches(mobileRegex))\{ 
\*\*\*\*\*\*\*; 
\}else \{ 
\*\*\*\*\*\*\*; 
\} 
 
注： 
String.java 
/\*\* 
\* Tells whether or not this string matches the given <a 
\* href="../util/regex/Pattern.html\#sum">regular expression</a>. 
\* 
\* An invocation of this method of the form 
\* str<tt>.matches(</tt>regex<tt>)</tt> yields exactly the 
\* same result as the expression 
\* 
\* <blockquote><tt> \{@link java.util.regex.Pattern\}.\{@link 
\* java.util.regex.Pattern\#matches(String,CharSequence) 
\* matches\}(</tt>regex<tt>,</tt> str<tt>)</tt></blockquote> 
\* 
\* @param regex 
\* the regular expression to which this string is to be matched 
\* 
\* @return <tt>true</tt> if, and only if, this string matches the 
\* given regular expression 
\* 
\* @throws PatternSyntaxException 
\* if the regular expression's syntax is invalid 
\* 
\* @see java.util.regex.Pattern 
\* 
\* @since 1.4 
\* @spec JSR-51 
\*/ 
public boolean matches(String regex) \{ 
return Pattern.matches(regex, this); 
\} 
 
Pattern.java 
/\*\* 
\* Compiles the given regular expression and attempts to match the given 
\* input against it. 
\* 
\* An invocation of this convenience method of the form 
\* 
\* <blockquote><pre> 
\* Pattern.matches(regex, input);</pre></blockquote> 
\* 
\* behaves in exactly the same way as the expression 
\* 
\* <blockquote><pre> 
\* Pattern.compile(regex).matcher(input).matches()</pre></blockquote> 
\* 
\* If a pattern is to be used multiple times, compiling it once and reusing 
\* it will be more efficient than invoking this method each time. 
\* 
\* @param regex 
\* The expression to be compiled 
\* 
\* @param input 
\* The character sequence to be matched 
\* 
\* @throws PatternSyntaxException 
\* If the expression's syntax is invalid 
\*/ 
public static boolean matches(String regex, CharSequence input) \{ 
Pattern p = Pattern.compile(regex); 
Matcher m = p.matcher(input); 
return m.matches(); 
\}