Java基礎：split 分割 字串（分隔字元如：* ^ ： | , .） 及注意點__string

【1】單個符號作為分隔字元

String address=”上海|上海市|閔行區|吳中路”;
String[]splitAddress=address.split(“\|”);//如果以豎線為分隔字元，則split的時候需要加上兩個斜杠【\】進行轉義
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

Stringaddress=”上海上海市閔行區*吳中路”;
String[]splitAddress=address.split(“\*”);
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

Stringaddress=”上海:上海市:閔行區:吳中路”;
String[]splitAddress=address.split(“\:”);
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

Stringaddress=”上海.上海市.閔行區.吳中路”;
String[]splitAddress=address.split(“\.”);
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);
Stringaddress=”上海^上海市^閔行區^吳中路”;
String[]splitAddress=address.split(“\^”);
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

Stringaddress=”上海@上海市@閔行區@吳中路”;
String[]splitAddress=address.split(“@”);
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

Stringaddress=”上海,上海市,閔行區,吳中路”;
String[]splitAddress=address.split(“,”);
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]); 【2】多個符號作為分隔字元

String address=”上海^上海市@閔行區#吳中路”;
String[]splitAddress=address.split(“\^|@|#”);
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

*****************格式小提示*****************************************
String address = newString(“192.168.13.240”);
String[] str = address.split(“\.”);
for(String s : str){
System.out.println(s);
}

輸出格式：
192
168
13
240
System.out.println(splitAddress[0]+splitAddress[1]+splitAddress[2]+splitAddress[3]);

輸出格式：上海上海市閔行區吳中路 總結：

（1）split運算式，其實就是一個Regex。* ^ |等符號在Regex中屬於一種有特殊含義的字元，如果使用此種字元作為分隔字元，必須使用轉義符即\加以轉義。
（2）如果使用多個分隔字元則需要藉助 |符號，如【2】所示，但需要轉義符的仍然要加上分隔字元進行處理。