使用 \\\\ + 即使它们更多，也要拆分空格。

Use \\s+ to split on spaces even if they are more.

String string = "1-50  of 500+";
String[] stringArray = string.split("\\s+");

for (String str : stringArray)
{
    System.out.println(str);
}

完整示例： http://ideone.com/CFVr6N

编辑：

如果您还要拆分选项卡，请将正则表达式更改为 \\\\ + | \\t + 并且它还检测空格和制表符。

If you also want to split on tabs, change the regex to \\s+|\\t+ and it detects both spaces and tabs as well.