将数字附加到url字符串的末尾

I have the below for loop which I use to append a number to the end of a URL String:

我有以下for循环,我用它在URL字符串的末尾附加一个数字:

for(int i = 0; i < 5; i++){
    PUT_URL = PUT_URL + i;
    System.out.println(PUT_URL);
    sendPUT();
    System.out.println("PUT Done");
}

Currently the url appears in the format:

目前,网址以以下格式显示:

myurl1
myurl12
myurl123
myurl1234    
myurl12345

What's the best way to amend this so the url appears as?

修改此内容的最佳方法是什么,以便网址显示为?

myurl1
myurl2
myurl3
myurl4
myurl5

1 个解决方案

#1

With this line

有了这条线

PUT_URL = PUT_URL + i;

you are modifying PUT_URL, that I presume contains myurl, by appending i to it and then printing. Therefore in the next iteration PUT_URL will contain a number at the end and then you are appending the next number.

你正在修改PUT_URL,我认为它包含myurl,通过将i附加到它然后打印。因此,在下一次迭代中,PUT_URL将在末尾包含一个数字,然后您将附加下一个数字。

I would suggest creating a constant with the prefix of a url without the number at the end and then append a number to that to create PUT_URL:

我建议创建一个带有url前缀的常量,但不包含最后的数字,然后在其中附加一个数字来创建PUT_URL:

String URL_PREFIX = "myurl";

for(int i = 0; i < 5; i++) {
    PUT_URL = URL_PREFIX + i + 1;
    System.out.println(PUT_URL);
    sendPUT();
    System.out.println("PUT Done");
}

#1