文件云存储服务器（文件、图片）

文件云服务器

七牛云

public class TestQiniu {// 上传本地文件@Testpublic void uploadFile(){//构造一个带指定Zone对象的配置类Configuration cfg = new Configuration(Zone.zone0());//...其他参数参考类注释UploadManager uploadManager = new UploadManager(cfg);//...生成上传凭证，然后准备上传String accessKey = "liyKTcQC5TP1LrhgZH6Xem8zqMXbEtVgfAINP53w";String secretKey = "f5zpuzKAPceEMG77-EK3XbwqgOBRDXDawG4UHRtb";String bucket = "itcast_health";//如果是Windows情况下，格式是 D:\\qiniu\\test.png，可支持中文String localFilePath = "D:/2.jpg";//默认不指定key的情况下，以文件内容的hash值作为文件名String key = null;Auth auth = Auth.create(accessKey, secretKey);String upToken = auth.uploadToken(bucket);try {Response response = uploadManager.put(localFilePath, key, upToken);//解析上传成功的结果DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);System.out.println(putRet.key);System.out.println(putRet.hash);} catch (QiniuException ex) {Response r = ex.response;System.err.println(r.toString());try {System.err.println(r.bodyString());} catch (QiniuException ex2) {//ignore}}}
}

  // 删除空间中的文件@Testpublic void deleteFile(){//构造一个带指定Zone对象的配置类Configuration cfg = new Configuration(Zone.zone0());//...其他参数参考类注释String accessKey = "liyKTcQC5TP1LrhgZH6Xem8zqMXbEtVgfAINP53w";String secretKey = "f5zpuzKAPceEMG77-EK3XbwqgOBRDXDawG4UHRtb";String bucket = "itcast_health";String key = "Fu3Ic6TV6wIbJt793yaGeBmCkzTX";Auth auth = Auth.create(accessKey, secretKey);BucketManager bucketManager = new BucketManager(auth, cfg);try {bucketManager.delete(bucket, key);} catch (QiniuException ex) {//如果遇到异常，说明删除失败System.err.println(ex.code());System.err.println(ex.response.toString());}}

Java SDK操作七牛云

使用七牛云提供的Java SDK完成图片上传和删除，参考官方提供的例子

• 上传文件

//构造一个带指定Zone对象的配置类，zone0表示华东地区（默认）
Configuration cfg = new Configuration(Zone.zone0());
//...其他参数参考类注释UploadManager uploadManager = new UploadManager(cfg);
//...生成上传凭证，然后准备上传
String accessKey = "your access key";
String secretKey = "your secret key";
String bucket = "your bucket name";//默认不指定key的情况下，以文件内容的hash值作为文件名
String key = null;try {byte[] uploadBytes = "hello qiniu cloud".getBytes("utf-8");ByteArrayInputStream byteInputStream=new ByteArrayInputStream(uploadBytes);Auth auth = Auth.create(accessKey, secretKey);String upToken = auth.uploadToken(bucket);try {Response response = uploadManager.put(byteInputStream,key,upToken,null, null);//解析上传成功的结果DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);System.out.println(putRet.key);System.out.println(putRet.hash);} catch (QiniuException ex) {Response r = ex.response;System.err.println(r.toString());try {System.err.println(r.bodyString());} catch (QiniuException ex2) {//ignore}}
} catch (UnsupportedEncodingException ex) {//ignore
}

• 删除文件

//构造一个带指定Zone对象的配置类，zone0表示华东地区（默认）
Configuration cfg = new Configuration(Zone.zone0());
//...其他参数参考类注释String accessKey = "your access key";
String secretKey = "your secret key";String bucket = "your bucket name";
String key = "your file key";Auth auth = Auth.create(accessKey, secretKey);
BucketManager bucketManager = new BucketManager(auth, cfg);
try {bucketManager.delete(bucket, key);
} catch (QiniuException ex) {//如果遇到异常，说明删除失败System.err.println(ex.code());System.err.println(ex.response.toString());
}

封装工具类

为了方便操作七牛云存储服务，可以将官方提供的案例简单改造成一个工具类，在项目中直接使用此工具类来操作就可以

package com.itheima.utils;import com.google.gson.Gson;
import com.qiniu.common.QiniuException;
import com.qiniu.common.Zone;
import com.qiniu.http.Response;
import com.qiniu.storage.BucketManager;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.UploadManager;
import com.qiniu.storage.model.DefaultPutRet;
import com.qiniu.util.Auth;/*** 七牛云工具类*/
public class QiniuUtils {public  static String accessKey = "dulF9Wze9bxujtuRvu3yyYb9JX1Sp23jzd3tO708";public  static String secretKey = "vZkhW7iot3uWwcWz9vXfbaP4JepdWADFDHVLMZOe";public  static String bucket = "qiniutest";public static void upload2Qiniu(String filePath,String fileName){//构造一个带指定Zone对象的配置类Configuration cfg = new Configuration(Zone.zone0());UploadManager uploadManager = new UploadManager(cfg);Auth auth = Auth.create(accessKey, secretKey);String upToken = auth.uploadToken(bucket);try {Response response = uploadManager.put(filePath, fileName, upToken);//解析上传成功的结果DefaultPutRet putRet =new Gson().fromJson(response.bodyString(), DefaultPutRet.class);} catch (QiniuException ex) {Response r = ex.response;try {System.err.println(r.bodyString());} catch (QiniuException ex2) {//ignore}}}//上传文件（后续使用）public static void upload2Qiniu(byte[] bytes, String fileName){//构造一个带指定Zone对象的配置类Configuration cfg = new Configuration(Zone.zone0());//...其他参数参考类注释UploadManager uploadManager = new UploadManager(cfg);//默认不指定key的情况下，以文件内容的hash值作为文件名String key = fileName;Auth auth = Auth.create(accessKey, secretKey);String upToken = auth.uploadToken(bucket);try {Response response = uploadManager.put(bytes, key, upToken);//解析上传成功的结果DefaultPutRet putRet =new Gson().fromJson(response.bodyString(), DefaultPutRet.class);System.out.println(putRet.key);System.out.println(putRet.hash);} catch (QiniuException ex) {Response r = ex.response;System.err.println(r.toString());try {System.err.println(r.bodyString());} catch (QiniuException ex2) {//ignore}}}//删除文件（后续使用）public static void deleteFileFromQiniu(String fileName){//构造一个带指定Zone对象的配置类Configuration cfg = new Configuration(Zone.zone0());String key = fileName;Auth auth = Auth.create(accessKey, secretKey);BucketManager bucketManager = new BucketManager(auth, cfg);try {bucketManager.delete(bucket, key);} catch (QiniuException ex) {//如果遇到异常，说明删除失败System.err.println(ex.code());System.err.println(ex.response.toString());}}
}

实际应用

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