Json响应映射与％符号

Question

我有这样的JSON响应，需要知道如何用Java中的％符号解析这种映射

{
    message = "No such entity with %fieldName = %fieldValue, %field2Name = %field2Value";
    parameters =     {
        field2Name = websiteId;
        field2Value = 1;
        fieldName = email;
        fieldValue = "a@b.com";
    };
}