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.csdn.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

 

3、前期准备工作

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

 

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

创建accessKeyId

 

 

7、主要代码

1. package com.kp.alioos;

2.  

3. import java.io.File;

4. import java.io.FileInputStream;

5. import java.io.InputStream;

6. import java.net.HttpURLConnection;

7. import java.net.URL;

8.  
9.  
10.  
11.  

12. import com.aliyun.oss.OSSClient;

13. import com.aliyun.oss.model.ObjectMetadata;

14. import com.aliyun.oss.model.PutObjectResult;

15.  

16. /**

17. * @author: py

18. * @version:2016年12月29日 下午1:54:35

19. * com.kp.alioos.OOSManager.java

20. * @Desc

21. */

22. public class OOSManager {

23. /***下载媒体文件*/

24. public static String DOWNLOAD_MEDIA_URL = "https://api.weixin.qq.com/cgi-bin/media/get?access_token=ACCESS_TOKEN&media_id=MEDIA_ID";

25.  

26. /**

27. * @date 2016年12月29日下午3:12:33

28. * @param accessToken

29. * @param mediaId

30. * @param subPath askid提问id

31. * @throws Exception String

32. * @Des:上传微信图片至阿里OOS

33. */

34. public static String uploadWXImage(String accessToken,String mediaId,String subPath) throws Exception{

35.  

36. String key = OSSConfigure.remoteFilePath+subPath+"/"+subPath+"_"+mediaId;

37. if (subPath==null) {

38. key = OSSConfigure.remoteFilePath+OSSConfigure.subPath_null+"/"+"_"+mediaId;

39. }

40. String requestUrl = DOWNLOAD_MEDIA_URL;

41. requestUrl = requestUrl.replace("ACCESS_TOKEN", accessToken).replace("MEDIA_ID", mediaId);

42. System.out.println(requestUrl);

43. try {

44. URL url = new URL(requestUrl);

45. HttpURLConnection conn = (HttpURLConnection) url.openConnection();

46. conn.setDoInput(true);

47. conn.setRequestMethod("GET");

48. String contentType = conn.getHeaderField("Content-Type");

49. // 根据内容类型获取扩展名

50. String fileExt = MediaUtil.getFileEndWitsh(contentType);

51. // 将mediaId作为文件名

52. InputStream fileContent=conn.getInputStream();

53. //创建OSSClient实例

54. OSSClient ossClient=new OSSClient(OSSConfigure.endpoint, OSSConfigure.accessKeyId, OSSConfigure.accessKeySecret);

55. key=key+fileExt;

56. PutObjectResult putObject = ossClient.putObject(OSSConfigure.bucketName, key, fileContent);

57. System.err.println("putObjectgetETag:"+putObject.getETag());

58. System.err.println("putObjectgetRequestId:"+putObject.getRequestId());

59. System.err.println("putObjectgetClientCRC:"+putObject.getClientCRC());

60. System.err.println("putObjectgetServerCRC:"+putObject.getServerCRC());

61. return OSSConfigure.accessUrl+"/" +key;

62.  

63. } catch (Exception e) {

64. String error = String.format("下载媒体文件失败：%s", e);

65. System.out.println(error);

66. return null;

67. }

68. }

69.  

70. /**

71. * @date 2016年12月29日上午11:17:37

72. * @param ossConfigure

73. * @param file

74. * @param remotePath

75. * @throws Exception String

76. * @Des:上传OSS服务器文件

77. */

78. public static String uploadFile(File file,String remotePath) throws Exception{

79. InputStream fileContent=null;

80. fileContent=new FileInputStream(file);

81.  

82. OSSClient ossClient=new OSSClient(OSSConfigure.endpoint, OSSConfigure.accessKeyId, OSSConfigure.accessKeySecret);

83. String remoteFilePath = remotePath.substring(0, remotePath.length()).replaceAll("\\\\","/")+"/";

84. System.err.println("remoteFilePath:"+remoteFilePath);

85. //创建上传Object的Metadata

86. ObjectMetadata objectMetadata=new ObjectMetadata();

87. objectMetadata.setContentLength(fileContent.available());

88. objectMetadata.setCacheControl("no-cache");

89. objectMetadata.setHeader("Pragma", "no-cache");

90. objectMetadata.setContentEncoding("utf-8");

91. objectMetadata.setContentType(contentType(file.getName().substring(file.getName().lastIndexOf("."))));

92. objectMetadata.setContentDisposition("inline;filename=" + file.getName());

93. //上传文件

94. PutObjectResult putObject = ossClient.putObject(OSSConfigure.bucketName, remoteFilePath + file.getName(), fileContent, objectMetadata);

95.  

96. System.err.println("putObjectgetETag:"+putObject.getETag());

97. System.err.println("putObjectgetRequestId:"+putObject.getRequestId());

98. System.err.println("putObjectgetClientCRC:"+putObject.getClientCRC());

99. System.err.println("putObjectgetServerCRC:"+putObject.getServerCRC());

100. return OSSConfigure.accessUrl+"/" +remoteFilePath + file.getName();

101. }

102.  
103.  
104.  

105. /**

106. * @date 2016年12月29日上午11:17:22

107. * @param ossConfigure

108. * @param filePath void

109. * @Des:根据key删除OSS服务器上的文件

110. */

111. public static void deleteFile(OSSConfigure ossConfigure,String filePath){

112. OSSClient ossClient=new OSSClient(OSSConfigure.endpoint, OSSConfigure.accessKeyId, OSSConfigure.accessKeySecret);

113. ossClient.deleteObject(OSSConfigure.bucketName, filePath);

114.  

115. }

116.  
117.  

118. /**

119. * @date 2016年12月29日上午11:17:11

120. * @param FilenameExtension

121. * @return String

122. * @Des:判断OSS服务文件上传时文件的contentType

123. */

124. public static String contentType(String FilenameExtension){

125. if(FilenameExtension.equals("BMP")||FilenameExtension.equals("bmp")){return "image/bmp";}

126. if(FilenameExtension.equals("GIF")||FilenameExtension.equals("gif")){return "image/gif";}

127. if(FilenameExtension.equals("JPEG")||FilenameExtension.equals("jpeg")||

128. FilenameExtension.equals("JPG")||FilenameExtension.equals("jpg")||

129. FilenameExtension.equals("PNG")||FilenameExtension.equals("png")){return "image/jpeg";}

130. if(FilenameExtension.equals("HTML")||FilenameExtension.equals("html")){return "text/html";}

131. if(FilenameExtension.equals("TXT")||FilenameExtension.equals("txt")){return "text/plain";}

132. if(FilenameExtension.equals("VSD")||FilenameExtension.equals("vsd")){return "application/vnd.visio";}

133. if(FilenameExtension.equals("PPTX")||FilenameExtension.equals("pptx")||

134. FilenameExtension.equals("PPT")||FilenameExtension.equals("ppt")){return "application/vnd.ms-powerpoint";}

135. if(FilenameExtension.equals("DOCX")||FilenameExtension.equals("docx")||

136. FilenameExtension.equals("DOC")||FilenameExtension.equals("doc")){return "application/msword";}

137. if(FilenameExtension.equals("XML")||FilenameExtension.equals("xml")){return "text/xml";}

138. return "text/html";

139. }

140.  
141.  
142.  

143. }

测试类

1. package com.kp.alioos;

2.  

3. import java.io.File;

4.  

5. /**

6. * @author: py

7. * @version:2016年12月29日 上午11:34:50

8. * qwy.wx.uitl.alioos.TestOOS.java

9. * @Desc

10. */

11. public class TestOOS {

12.  

13. public static void main(String[] args) {

14. // testWX();

15. test1();

16. }

17.  

18. /**

19. * @date 2016年12月30日下午8:29:22 void

20. * @Des: 测试上传微信图片

21. */

22. private static void testWX() {

23. String accessToken="";

24. String mediaId="";

25. String subPath="";

26. try {

27. OOSManager.uploadWXImage(accessToken, mediaId, subPath);

28. } catch (Exception e) {

29. // TODO Auto-generated catch block

30. e.printStackTrace();

31. }

32. }

33. /**

34. * @date 2016年12月30日下午8:29:44 void

35. * @Des:测试上传本地图片

36. */

37. private static void test1() {

38. try {

39. File file = new File("E:/n2/wx_img/head.png");

40. String uploadFile = OOSManager.uploadFile(file , "test");

41. System.err.println("uploadFile:"+uploadFile);

42. } catch (Exception e) {

43. // TODO Auto-generated catch block

44. e.printStackTrace();

45. }

46. }

47.  
48.  

49. }

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.csdn.net/detail/u014520797/9725893

 

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