分割字符串和截取字符串:split 和substring
//按“,”截取字符串
String id="123123,234534,453456";
String[] idArry = id.trim().split(",");
for(String nid:idArry){
System.out.println(nid);
}
打印出的值为:123123
234534
453456
//分隔符:substring
String returnResult= "13123123";
String subresult = returnResult.substring(1, returnResult.length() - 1);
subresult的值为“312312”