java - 使用indexof查找字符串中的模式

Question

谁能告诉我为什么这是一个无限循环？

private void splitBody()    {
        bodyparts=new Vector();
        String body = "<br />testtestest<br />fefefefefefefefefef<br />qqqqqqqqqqqq";

        int previousIndex=0;
        while(body.indexOf("<br />",previousIndex)!=-1) {
            int index=body.indexOf("<br />",previousIndex);
            System.out.println(body.substring(previousIndex, index));
            bodyparts.addElement(body.substring(previousIndex, index));
            previousIndex=index;
        }
    }

Answer 1

将最后一行更改为:

previousIndex = index + 1;