split 分割 字符串（分隔符如：* ^ ： | , . ?） 及注意点

https://blog.csdn.net/qq_35812160/article/details/78604034

【1】单个符号作为分隔符 

       String address=”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]);

    

         String address=”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]);

    

        String address=”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]);

 

         String address=”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]);

    

       String address=”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]);

    

 

         String address=”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]);

    

    String address=”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

      String address=”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***************************************************

 String address = new String(“192.168.13.240”);

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

        for(String s : 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。