// 字符串形式的日期
String dateString = "2018-07-14T17:45:55.9483536";
// 创建一个格式化器 formatter
static DateTimeFormatter formatter = DateTimeFormatter.ISO_DATE_TIME;

// 将字符串解析为 LocalDateTime
LocalDateTime dateTime = LocalDateTime.parse(dateString, formatter);
// 查看结果
System.out.println("Parsed LocalDateTime : " + dateTime);		
//Output:
//Parsed LocalDateTime : 2018-07-14T17:45:55.948353600