split 分割 字符串(分隔符如:* ^ : | , .) 及注意点

【1】单个符号作为分隔符 

       Stringaddress="上海|上海市|闵行区|吴中路";

     String[]splitAddress=address.split("\\|");//如果以竖线为分隔符,则split的时候需要加上两个斜杠【\\】进行转义

     System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

    

         Stringaddress="上海*上海市*闵行区*吴中路";

     String[]splitAddress=address.split("\\*");

     System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

    

        Stringaddress="上海:上海市:闵行区:吴中路";

     String[]splitAddress=address.split("\\:");

     System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

         Stringaddress="上海.上海市.闵行区.吴中路";

     String[]splitAddress=address.split("\\.");

     System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

    

       Stringaddress="上海^上海市^闵行区^吴中路";

     String[]splitAddress=address.split("\\^");

     System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

    

         Stringaddress="上海@上海市@闵行区@吴中路";

     String[]splitAddress=address.split("@");

     System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

    

    Stringaddress="上海,上海市,闵行区,吴中路";

     String[]splitAddress=address.split(",");

     System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

 

    【2】多个符号作为分隔符

      Stringaddress="上海^上海市@闵行区#吴中路";

     String[]splitAddress=address.split("\\^|@|#");

     System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

    

***************************格式 小提示***************************************************

 Stringaddress = new String("192.168.13.240");

        String[]str = address.split("\\.");

        for(Strings : str){

            System.out.println(s);

        }

输出格式:

192

168

13

240

System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

输出格式:上海上海市闵行区吴中路

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总结:(1)split表达式,其实就是一个正则表达式。* ^ | 等符号在正则表达式中属于一种有特殊含义的字符,如果使用此种字符作为分隔符,必须使用转义符即\\加以转义。

          (2)如果使用多个分隔符则需要借助| 符号,如【2】所示,但需要转义符的仍然要加上分隔符进行处理。

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