如何在Java中生成签名并在jQuery(Cloudinary)中使用它? [英] How to generate signature in java and use it in jQuery (Cloudinary)?
问题描述
我正在尝试使用jQuery和Java将图像上传到Cloudinary.我在页面中尝试了代码链接，没有运气.我在生成签名时遇到错误. 有人有生成签名的有效实现示例吗?那会更有帮助.
I'm trying to upload images to Cloudinary using jQuery and Java. I tried the code in this link with no luck. I'm getting errors in generating the signature. Does anyone have an example of a working implementation for generating the signature? That would be more helpful.
推荐答案
将以下代码放入index.jsp:
Place the following code in your index.jsp:
<html>
<head>
<title></title>
<script src='jquery.min.js' type='text/javascript'></script>
<script src='jquery.ui.widget.js' type='text/javascript'></script>
<script src='jquery.iframe-transport.js' type='text/javascript'></script>
<script src='jquery.fileupload.js' type='text/javascript'></script>
<script src='jquery.cloudinary.js' type='text/javascript'></script>
<script type = "text/javascript">
$.cloudinary.config({ cloud_name: 'sample', api_key: '874837483274837'});
</script>
</head>
<body>
<input name="file" type="file"
class="cloudinary-fileupload" data-cloudinary-field="image_id"
data-form-data="${signedData}" />
</body>
</html>
如果您有Maven项目，则将这些依赖项放在pom.xml中，或者下载其jar并将其放在"lib"文件夹中.
If you have a maven project then place these dependencies in your pom.xml or else download their jars and place them in your 'lib' folder.
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20090211</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.4</version>
</dependency>
最后创建一个Servlet，如下所示:
Finally create a Servlet as:
import org.apache.commons.codec.digest.DigestUtils;
import org.json.JSONObject;
public class SignRequestServlet extends HttpServlet{
public void doGet(HttpServletRequet request, HttpServletResponse response) throws ServletException, IOException{
long unixTime = System.currentTimeMillis() / 1000L;
String unsignedData = ""api_key":"874837483274837","timestamp":"" + unixTime + """;
String unsignedDataForSHA = "timestamp="+unixTime;
String apiSecret = "-----place your api secret here-----";
String unsignedDataSecret = unsignedDataForSHA + apiSecret;
String signedData = unsignedData + ","signature":"" + DigestUtils.shaHex(unsignedDataSecret.getBytes()) + """;
JSONObject jsonObject = new JSONObject("{" + signedData.replaceAll(""", "\"") + "}");
request.setAttribute("signedData", jsonObject.toString());
request.getRequestDispatcher("/index.jsp").forward(request,response);
}
public void doPost(HttpServletRequet request, HttpServletResponse response) throws ServletException, IOException{
doGet(request, response);
}
}
记住:按照Cloudinary控制台主页中提供的api-key，cloud-name和api-secret进行替换.另外，您可能需要更改index.jsp中.js文件的位置.
Remember: Replace the api-key, cloud-name and api-secret as given in the home page of Cloudinary console. Also, you may need to change the location of the .js files in index.jsp.
这篇关于如何在Java中生成签名并在jQuery(Cloudinary)中使用它?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
