阿里云服务器云对象存储OOS(二) ---图片上传与读取demo

上一篇讲解了无需代码操作的阿里OOS云对象存储

http://blog.****.net/u014520797/article/details/53945912

1、SDK下载，不下载也可以，文章最后有demo，demo里面有jar包

https://help.aliyun.com/document_detail/31947.html?spm=5176.8041989.303605.24.voFC4A

2、demo结构

阿里云服务器云对象存储OOS(二) ---图片上传与读取demo

3、前期准备工作

阿里云服务器云对象存储OOS(二) ---图片上传与读取demo

如果你选择的也是华南1 ，那么endpoint不需要变动，后面三个accessKeyId，accessKeySecret，bucketName需要你自己准备。

4、endpoint

阿里云服务器云对象存储OOS(二) ---图片上传与读取demo

5、accessKeyId，accessKeySecret位置的在个人中心页的右上角，将鼠标放置账号上即可看到

阿里云服务器云对象存储OOS(二) ---图片上传与读取demo

创建accessKeyId

阿里云服务器云对象存储OOS(二) ---图片上传与读取demo

7、主要代码

package com.kp.alioos;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;
/**
* @author: py
* @version:2016年12月29日下午1:54:35
* com.kp.alioos.OOSManager.java
* @Desc
*/
public class OOSManager {
/***下载媒体文件*/
public static String DOWNLOAD_MEDIA_URL = "https://api.weixin.qq.com/cgi-bin/media/get?access_token=ACCESS_TOKEN&media_id=MEDIA_ID";
/**
* @date 2016年12月29日下午3:12:33
* @param accessToken
* @param mediaId
* @param subPath askid提问id
* @throws Exception String
* @Des:上传微信图片至阿里OOS
*/
public static String uploadWXImage(String accessToken,String mediaId,String subPath) throws Exception{
String key = OSSConfigure.remoteFilePath+subPath+"/"+subPath+"_"+mediaId;
if (subPath==null) {
key = OSSConfigure.remoteFilePath+OSSConfigure.subPath_null+"/"+"_"+mediaId;
}
String requestUrl = DOWNLOAD_MEDIA_URL;
requestUrl = requestUrl.replace("ACCESS_TOKEN", accessToken).replace("MEDIA_ID", mediaId);
System.out.println(requestUrl);
try {
URL url = new URL(requestUrl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true);
conn.setRequestMethod("GET");
String contentType = conn.getHeaderField("Content-Type");
// 根据内容类型获取扩展名
String fileExt = MediaUtil.getFileEndWitsh(contentType);
// 将mediaId作为文件名
InputStream fileContent=conn.getInputStream();
//创建OSSClient实例
OSSClient ossClient=new OSSClient(OSSConfigure.endpoint, OSSConfigure.accessKeyId, OSSConfigure.accessKeySecret);
key=key+fileExt;
PutObjectResult putObject = ossClient.putObject(OSSConfigure.bucketName, key, fileContent);
System.err.println("putObjectgetETag:"+putObject.getETag());
System.err.println("putObjectgetRequestId:"+putObject.getRequestId());
System.err.println("putObjectgetClientCRC:"+putObject.getClientCRC());
System.err.println("putObjectgetServerCRC:"+putObject.getServerCRC());
return OSSConfigure.accessUrl+"/" +key;
} catch (Exception e) {
String error = String.format("下载媒体文件失败：%s", e);
System.out.println(error);
return null;
}
}
/**
* @date 2016年12月29日上午11:17:37
* @param ossConfigure
* @param file
* @param remotePath
* @throws Exception String
* @Des:上传OSS服务器文件
*/
public static String uploadFile(File file,String remotePath) throws Exception{
InputStream fileContent=null;
fileContent=new FileInputStream(file);
OSSClient ossClient=new OSSClient(OSSConfigure.endpoint, OSSConfigure.accessKeyId, OSSConfigure.accessKeySecret);
String remoteFilePath = remotePath.substring(0, remotePath.length()).replaceAll("\\\\","/")+"/";
System.err.println("remoteFilePath:"+remoteFilePath);
//创建上传Object的Metadata
ObjectMetadata objectMetadata=new ObjectMetadata();
objectMetadata.setContentLength(fileContent.available());
objectMetadata.setCacheControl("no-cache");
objectMetadata.setHeader("Pragma", "no-cache");
objectMetadata.setContentEncoding("utf-8");
objectMetadata.setContentType(contentType(file.getName().substring(file.getName().lastIndexOf("."))));
objectMetadata.setContentDisposition("inline;filename=" + file.getName());
//上传文件
PutObjectResult putObject = ossClient.putObject(OSSConfigure.bucketName, remoteFilePath + file.getName(), fileContent, objectMetadata);
System.err.println("putObjectgetETag:"+putObject.getETag());
System.err.println("putObjectgetRequestId:"+putObject.getRequestId());
System.err.println("putObjectgetClientCRC:"+putObject.getClientCRC());
System.err.println("putObjectgetServerCRC:"+putObject.getServerCRC());
return OSSConfigure.accessUrl+"/" +remoteFilePath + file.getName();
}
/**
* @date 2016年12月29日上午11:17:22
* @param ossConfigure
* @param filePath void
* @Des:根据key删除OSS服务器上的文件
*/
public static void deleteFile(OSSConfigure ossConfigure,String filePath){
OSSClient ossClient=new OSSClient(OSSConfigure.endpoint, OSSConfigure.accessKeyId, OSSConfigure.accessKeySecret);
ossClient.deleteObject(OSSConfigure.bucketName, filePath);
}
/**
* @date 2016年12月29日上午11:17:11
* @param FilenameExtension
* @return String
* @Des:判断OSS服务文件上传时文件的contentType
*/
public static String contentType(String FilenameExtension){
if(FilenameExtension.equals("BMP")||FilenameExtension.equals("bmp")){return "image/bmp";}
if(FilenameExtension.equals("GIF")||FilenameExtension.equals("gif")){return "image/gif";}
if(FilenameExtension.equals("JPEG")||FilenameExtension.equals("jpeg")||
FilenameExtension.equals("JPG")||FilenameExtension.equals("jpg")||
FilenameExtension.equals("PNG")||FilenameExtension.equals("png")){return "image/jpeg";}
if(FilenameExtension.equals("HTML")||FilenameExtension.equals("html")){return "text/html";}
if(FilenameExtension.equals("TXT")||FilenameExtension.equals("txt")){return "text/plain";}
if(FilenameExtension.equals("VSD")||FilenameExtension.equals("vsd")){return "application/vnd.visio";}
if(FilenameExtension.equals("PPTX")||FilenameExtension.equals("pptx")||
FilenameExtension.equals("PPT")||FilenameExtension.equals("ppt")){return "application/vnd.ms-powerpoint";}
if(FilenameExtension.equals("DOCX")||FilenameExtension.equals("docx")||
FilenameExtension.equals("DOC")||FilenameExtension.equals("doc")){return "application/msword";}
if(FilenameExtension.equals("XML")||FilenameExtension.equals("xml")){return "text/xml";}
return "text/html";
}
}

测试类

package com.kp.alioos;
import java.io.File;
/**
* @author: py
* @version:2016年12月29日上午11:34:50
* qwy.wx.uitl.alioos.TestOOS.java
* @Desc
*/
public class TestOOS {
public static void main(String[] args) {
// testWX();
test1();
}
/**
* @date 2016年12月30日下午8:29:22 void
* @Des: 测试上传微信图片
*/
private static void testWX() {
String accessToken="";
String mediaId="";
String subPath="";
try {
OOSManager.uploadWXImage(accessToken, mediaId, subPath);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* @date 2016年12月30日下午8:29:44 void
* @Des:测试上传本地图片
*/
private static void test1() {
try {
File file = new File("E:/n2/wx_img/head.png");
String uploadFile = OOSManager.uploadFile(file , "test");
System.err.println("uploadFile:"+uploadFile);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

8、阿里官方案例https://help.aliyun.com/document_detail/32013.html?spm=5176.doc32009.6.659.aTGNmi

9、demo下载 http://download.****.net/detail/u014520797/9725893

原文地址：https://blog.****.net/u014520797/article/details/53946121?utm_source=itdadao&utm_medium=referral

阿里云服务器 云对象存储OOS(二) ---图片上传与读取demo

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