maven坐标地址
<dependency> <groupId>com.upyun</groupId> <artifactId>java-sdk</artifactId> <version>4.2.3</version> </dependency>
上代码
// 获取文件流hash InputStream inputStream = file.getInputStream(); String fileHash = DigestUtils.md5DigestAsHex(inputStream).toLowerCase(); // 初始化sdk RestManager manager = new RestManager("image-learn-app-avatar", "a392223903", "kqoyJ4kp37IXdDzzqCYHdn3m8ty6q0pxnzvhx1"); manager.setTimeout(60); // 根据hash生成二级目录 String filePath1 = fileHash.substring(0, 2); String filePath2 = fileHash.substring(2, 4); // 创建所需的文件二级目录 String path = File.separator + app + File.separator + filePath1 + File.separator + filePath2 + File.separator; try { System.out.println(path); Response result = manager.mkDir(path); if (!result.isSuccessful()) { throw new BusinessException("创建目录失败,错误码" + result.code()); } } catch (UpException e) { throw new BusinessException("创建目录失败:" + e.getMessage()); } // 填充完整文件名称 String fillName = fileHash + "." + getExtensionByContentType(file.getContentType()); String fillPath = path + File.separator + fillName; // 上传文件 Map<String, String> params = new HashMap<String, String>(); try (Response result = manager.writeFile(fillPath, file.getInputStream(), params)) { if (!result.isSuccessful()) { throw new BusinessException("上传文件失败,错误码" + result.code()); } } catch (UpException e) { throw new BusinessException("上传文件失败:" + e.getMessage()); }
java一个类可以有多个构造方法,根据传参类型和个数来匹配执行哪个构造方法。public class Member { public Member(){  ...
(1).final 修饰符通常和 static 修饰符一起使用来创建类常量。(2).父类中的 final 方法可以被子类继承,但是不能被子类重写,声明 final 方法的主要目的是防止该方法的内容被修改。public class Member {  ...
Java5 引入了一种主要用于数组的增强型 for 循环,类似js中的for inpublic class Member { public static void main(String[]&...
在java中字符串属于对象,刚开始我就疑惑为什么int char等类型都是小写,结果String是大写,java太反人类,后来才知道String是对象。(1).java创建字符串String text = "net"; String tex...
java stringBuffer(1).stringBuffer和stringBuilder区别stringBuffer是线程安全的,stringBuilder速度更快(2).简单的stringBuffer例子StringBuffer sBuffer = new&nb...
(1).java睡眠函数Thread.sleep(时间); //单位为毫秒(2).java睡眠函数例子Date dNow = new Date(); SimpleDateFormat ft = new&nbs...