email格式判断之正则表达式

Java代码  

1. 常用的几个:  
2.   
3. ^[_/.0-9a-z-]+@([0-9a-z][0-9a-z-]+/.)+[a-z]{2,3}$  
4.   
5. ^[_a-z0-9-]+(/.[_a-z0-9-]+)*@[a-z0-9-]+(/.[a-z0-9-]+)*$  
6.   
7. ^(([0-9a-zA-Z]+)|([0-9a-zA-Z]+[_.0-9a-zA-Z-]*[0-9a-zA-Z]+))@([a-zA-Z0-9-]+[.])+([a-zA-Z]{2}|net|com|gov|mil|org|edu|int)$  
8.   
9. ^([a-z0-9A-Z]+[-|//.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?//.)+[a-zA-Z]{2,}$  
10.   
11. /w+([-+.]/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)*   

常用的几个:

^[_/.0-9a-z-]+@([0-9a-z][0-9a-z-]+/.)+[a-z]{2,3}$

^[_a-z0-9-]+(/.[_a-z0-9-]+)*@[a-z0-9-]+(/.[a-z0-9-]+)*$

^(([0-9a-zA-Z]+)|([0-9a-zA-Z]+[_.0-9a-zA-Z-]*[0-9a-zA-Z]+))@([a-zA-Z0-9-]+[.])+([a-zA-Z]{2}|net|com|gov|mil|org|edu|int)$

^([a-z0-9A-Z]+[-|//.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?//.)+[a-zA-Z]{2,}$

/w+([-+.]/w+)*@/w+([-.]/w+)*/./w+([-.]/w+)* 

在JAVA中使用:

Java代码  

1. import java.sql.*;  
2. import java.io.*;  
3. import java.util.regex.*;  
4.   
5. public class test{  
6.  public static void main(String[] args){  
7.   try{  
8.    String s = "";  
9.    while(!s.equals("q")){  
10.     System.out.print("input:");  
11.     DataInputStream in = new DataInputStream(new BufferedInputStream(System.in));  
12.     s = in.readLine();  
13.     System.out.println("your input is :"+s);  
14.     String check = "^([a-z0-9A-Z]+[-|//.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?//.)+[a-zA-Z]{2,}$";  
15.     Pattern regex = Pattern.compile(check);  
16.                 Matcher matcher = regex.matcher(s);  
17.                 boolean isMatched = matcher.matches();  
18.                 if(isMatched){  
19.                  System.out.println("it's a email");  
20.              }else{  
21.               System.out.println("it's not a email");  
22.              }   
23.       
24.    }  
25.         }catch(Exception e){  
26.          System.out.println("error"+e.getMessage());  
27.      }  
28.  }          

import java.sql.*;
import java.io.*;
import java.util.regex.*;

public class test{
 public static void main(String[] args){
  try{
   String s = "";
   while(!s.equals("q")){
    System.out.print("input:");
    DataInputStream in = new DataInputStream(new BufferedInputStream(System.in));
    s = in.readLine();
    System.out.println("your input is :"+s);
    String check = "^([a-z0-9A-Z]+[-|//.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?//.)+[a-zA-Z]{2,}$";
    Pattern regex = Pattern.compile(check);
                Matcher matcher = regex.matcher(s);
                boolean isMatched = matcher.matches();
                if(isMatched){
                 System.out.println("it's a email");
             }else{
              System.out.println("it's not a email");
             } 

   }
        }catch(Exception e){
         System.out.println("error"+e.getMessage());
     }
 }        

分享到：