如何在用特殊符号拆分字符串并将特殊符号包含到第一个子字符串之后，从字符串中获取子字符串？

Question

我想用分号将字符串拆分成字符串数组，但是每当它用分号拆分字符串时，我需要将分号添加到第一个拆分字符串中。它正在添加到下一个分裂屏幕。

String sampleContent="hello ; hai ;  come fast ;";
            String SQLScripts[] = sampleContent.split("(?=\\;)",-1);
            System.out.println(" SQLSCript Length is:"+SQLScripts.length);
            for(int m=0;m<SQLScripts.length;m++){
                System.out.println("After SQLScripts spliting with semi colon is : "+SQLScripts[m]);
            }`

我期望的输出是：

 SQLSCript Length is:4
After SQLScripts spliting with semi colon is : hello ;
After SQLScripts spliting with semi colon is : hai ;
After SQLScripts spliting with semi colon is : come fast ;

我得到的输出是：

 SQLSCript Length is:4
After SQLScripts spliting with semi colon is : hello 
After SQLScripts spliting with semi colon is : ; hai 
After SQLScripts spliting with semi colon is : ;  come fast 
After SQLScripts spliting with semi colon is : ;

Answer 1

尝试使用这个正则表达式"(?<=;)",-1，您可以包括;

  public static void main(String[] args) {
    String sampleContent = "hello ; hai ; come fast ;";
    String SQLScripts[] = sampleContent.split("(?<=;)",-1);
    System.out.println("SQLSCript Length is:"+SQLScripts.length);
    for(int m=0;m<SQLScripts.length-1;m++){
        System.out.println("After SQLScripts spliting with semi colon is : "+SQLScripts[m]);
    }
  }

输出：

  SQLSCript Length is:4
  After SQLScripts spliting with semi colon is : hello ;
  After SQLScripts spliting with semi colon is :  hai ;
  After SQLScripts spliting with semi colon is :  come fast ;

Answer 2

您可以基于lookbehind使用此正则表达式：

String sampleContent="hello ; hai ;  come fast ;";
String SQLScripts[] = sampleContent.split("(?<=;)\\s+");
System.out.println(" SQLSCript Length is:"+SQLScripts.length);
for(int i=0;i<SQLScripts.length;i++){
    System.out.println("After SQLScripts spliting with semi colon is : "+SQLScripts[i]);
}

输出：

 SQLSCript Length is:3
After SQLScripts spliting with semi colon is : hello ;
After SQLScripts spliting with semi colon is : hai ;
After SQLScripts spliting with semi colon is : come fast ;