取有任意固定间隔符的String

public String getString(String input, String name)//name为变量的名称“=”前面的变量名字
{
if (input.equals("") || name.equals(""))
{
return "";
}
Strings = "";
StringTokenizer st = new StringTokenizer(input, "|");//间隔符为|，根据需要换
while (st.hasMoreElements())
{
vv = st.nextToken();
if (s.indexOf(para) != -1 && s.substring(0,s.indexOf("=") ).equals(name)) //取“=”为取值起点
{
s = s.substring(vv.indexOf("=") + 1);
return s;
}
}
return "";
}