import java.util.UUID; 调用UUID类的randomUUID()方法生成一个UUID: java UUID uuid = UUID.randomUUID(); 将生成的UUID转换为字符串: java String uuidString = uuid.toString(); 移除字符串中的短划线: java String uuidWithoutDashes = uuidString.replaceAll("-", ""); 取前16位: java Str...
public String generateString(UUID uuid) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException { if (uuid == null) { return ""; } Method digits = UUID.class.getDeclaredMethod("digits", long.class, int.class); digits.setAccessible(true); return ( (...
return Boolean*/publicStringupload(MultipartFilefile){StringoriginalFilename=file.getOriginalFilename();if(StringUtils.isBlank(originalFilename)){thrownewRuntimeException();}StringfileName=generateUUIDWithoutDashes()+originalFilename.substring(originalFilename.lastIndexOf("."));StringobjectName=formatTodayDat...
*@returnBoolean */publicStringupload(MultipartFilefile){StringoriginalFilename=file.getOriginalFilename();if(StringUtils.isBlank(originalFilename)){thrownewRuntimeException();}StringfileName=generateUUIDWithoutDashes()+originalFilename.substring(originalFilename.lastIndexOf("."));StringobjectName=formatToday...
Add ServiceInstanceIdResourceProvider implementation for generating service.instance.id UUID if not already provided by user. Included in opentelemetry-sdk-extension-incubator. (#6226) Add GCP resource detector to list of resource providers in autoconfigure docs (#6336) Tooling Check for Java 17 toolcha...
As before, we know some things about UUIDs that help us avoid some general-case error checking and trade some flexibility for performance. For example, we know that the string representation of a UUID will always be exactly 36 characters long (32 hexadecimal digits and four dashes). That mea...
Add ServiceInstanceIdResourceProvider implementation for generating service.instance.id UUID if not already provided by user. Included in opentelemetry-sdk-extension-incubator. (#6226) Add GCP resource detector to list of resource providers in autoconfigure docs (#6336) Tooling Check for Java 17 toolcha...
The hex attribute converts the uuid to string in Python. The final result does not have any dashes. A UUID without dashes is functionally identical to a full UUID. This happens because the position of dashes is fixed in a UUID. Using the urn attribute to convert UUID to String in Pytho...
Add ServiceInstanceIdResourceProvider implementation for generating service.instance.id UUID if not already provided by user. Included in opentelemetry-sdk-extension-incubator. (#6226) Add GCP resource detector to list of resource providers in autoconfigure docs (#6336) Tooling Check for Java...
As before, we know some things about UUIDs that help us avoid some general-case error checking and trade some flexibility for performance. For example, we know that the string representation of a UUID will always be exactly 36 characters long (32 hexadecimal digits and four dashes). That mea...