java的string.split()分割特殊字符时注意点

java

【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

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。