java字符串取值

Answer 1

    String dataStr="[id=1,mid=2]";
    dataStr="{"+dataStr.replaceAll("=", ":").substring(1,dataStr.length()-1)+"}";
    JSONObject data=JSONObject.parseObject(dataStr);
    System.out.println(data.get("id")+","+data.get("mid"));

You can use tools, such as Alibaba's fastjson, to first format the string into json format (intercept and split it), and then get the value through the key

Answer 2

1. The string in java should be defined this way: String stats="[id=1,mid=2]";
2. What value do you want to take? The description is not clear

Answer 3

The non-standard method is to use "," to split the string, and then use "=" to split it. The first part is the key and the last part is the value. Then you can store it as a map or other methods.

Answer 4

    String[]str = new String[]{"id=1","mid=2"};
    String array = Arrays.toString(str); // 获取你这样的字符串
    String mapString = array.replace("[", "{").replace("]", "}");
    Map<String, Integer> map = new Gson().fromJson(mapString, new TypeToken<Map<String, Integer>>() {
    }.getType());