Java split 分割 字符串（分隔符如：* ^ ： | , .） 及注意點 要轉義

split 分割 字符串（分隔符如：* ^ ： | , .） 及注意點

split表達式，其實就是一個正則表達式。【 * ^ | 】等符號在正則表達式中屬於一種有特殊含義的字符，如果使用此種字符作為分隔符，必須使用轉義符即【 \\ 】加以轉義。

String address=”上海|上海市|閔行區|吳中路”;
String[] splitAddress=address.split(“\\|”); //如果以豎線為分隔符，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]);
    
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]);
    
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]);

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]);
    
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]);
    
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]);
    
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]);

如果使用多個分隔符則需要借助 | 符號，但需要轉義符的仍然要加上分隔符進行處理。

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]);