Question

我有以下文字格式

 String s = "
 key1:value1;
 key2:value2;
 key3:value3;
 key4:value4;
 key5:value5;
 key6:https://url1.com, https://url2.com;
 key7:value;";
 Note: (the number of urls in key6 will be 1 to many and non linear)

我使用S.split（“;”）将7个键值块拆分为s

 String keyValPair[] =  s.split(";");
  Output will be
  /* keyValPair[0] contains key1:value
     keyValPair[1] contains key2:value
     keyValPair[2] contains key3:value and 
     keyValPair[6] contains key6:https://url1.com,https://url2.com;

现在我想再次分开键和值并将其存储在数组0和ist位置。

     //while looping into keyValPair[i]
     String[] singleKeyVal[] = keyValPair[0].split(":");
     /*Output
         singleKeyVal[0] will have Key1
         singleKeyVal[1] will have Value1
          perform some task and clear the array singlekeyVal[]

问题是如何正确拆分Key6

 //while looping into KeyValPair[i]
 String[] singleKeyVal[] = keyValPair[5].split(":");  //6th chunk contains : in the URL too
 /*Output
     singleKeyVal[0] will have Key6
     singleKeyVal[1] should contain https://url1.com,https://url2.com
     also note that above example contains only 2 urls but it will contain urls between 1 to many urls,

Answer 1

an overloaded split有一个名为limit的第二个参数：

limit参数控制模式的应用次数，因此会影响结果数组的长度。

所以使用

String[] SingleKeyVal[] = KeyValPair[5].split(":", 2);

只拆分一次，得到一个大小为2的数组。

Answer 2

有两种split方法 - the second one 采用limit参数，允许您指定所需的最大组数。在你的情况下：

String[] singleKeyVal = keyValPair[5].split(":", 2);

应该做你想做的事。

ps：你应该采用Java命名约定（变量以小写字母开头）。

如何拆分所需格式的字符串？

2 个答案: