使用GcsExampleServlet.java设置Google云端存储文件上传.我已完成所有步骤,但当我将项目部署到aggengine并尝试在GCS中上传简单文本时,它会失败并显示以下日志:
com.google.appengine.tools.cloudstorage.NonRetriableException: com.google.appengine.tools.cloudstorage.NonRetriableException: com.google.appengine.api.appidentity.AppIdentityServiceFailureException: The AppIdentity service threw an unexpected error. Details: at com.google.appengine.tools.cloudstorage.RetryHelper.doRetry(RetryHelper.java:120) at com.google.appengine.tools.cloudstorage.RetryHelper.runWithRetries(RetryHelper.java:166) at com.google.appengine.tools.cloudstorage.RetryHelper.runWithRetries(RetryHelper.java:156) at com.google.appengine.tools.cloudstorage.GcsServiceImpl.createOrReplace(GcsServiceImpl.java:70) at com.appart.storage.server.GcsExampleServlet.doPost(GcsExampleServlet.java:88) at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166) (...)
仍然,代码中没有任何复杂的…在web.xml中我已经配置了servlet:
<servlet> <servlet-name>GcsExample</servlet-name> <servlet-class> com.example.server.GcsExampleServlet </servlet-class> </servlet> <servlet-mapping> <servlet-name>GcsExample</servlet-name> <url-pattern>/gcs/*</url-pattern> </servlet-mapping>
这是servlet GcsExampleServlet.java(与google示例完全相同):
@SuppressWarnings("serial") public class GcsExampleServlet extends HttpServlet { private final GcsService gcsService = GcsServiceFactory.createGcsService(new RetryParams.Builder() .initialRetryDelayMillis(10) .retryMaxAttempts(10) .totalRetryPeriodMillis(15000) .build()); //... @Override public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException { GcsOutputChannel outputChannel = gcsService.createOrReplace(getFileName(req), GcsFileOptions.getDefaultInstance()); copy(req.getInputStream(), Channels.newOutputStream(outputChannel)); } private void copy(InputStream input, OutputStream output) throws IOException { try { byte[] buffer = new byte[BUFFER_SIZE]; int bytesRead = input.read(buffer); while (bytesRead != -1) { output.write(buffer, 0, bytesRead); bytesRead = input.read(buffer); } } finally { input.close(); output.close(); } } }
这是我的upload.html文件:
<form action="/upload.html" enctype="text/plain" method="get" name="putFile" id="putFile"> <div> Bucket: <input type="text" name="bucket" /> File Name: <input type="text" name="fileName" /> <br /> File Contents: <br /> <textarea name="content" id="content" rows="3" cols="60"></textarea> <br /> <input type="submit" onclick='uploadFile(this)' value="Upload Content" /> </div> </form> <script> function uploadFile() { var bucket = document.forms["putFile"]["bucket"].value; var filename = document.forms["putFile"]["fileName"].value; if (bucket == null || bucket == "" || filename == null || filename == "") { alert("Both Bucket and FileName are required"); return false; } else { var postData = document.forms["putFile"]["content"].value; document.getElementById("content").value = null; var request = new XMLHttpRequest(); request.open("POST", "/gcs/" + bucket + "/" + filename, false); request.setRequestHeader("Content-Type", "text/plain;charset=UTF-8"); request.send(postData); } } </script>
我启用了Billing,创建了一个存储桶但仍然出现了AppIdentity错误.我没有Oauth,云存储API已启用,用于上传的appengine帐户具有对存储桶的写入权限.我甚至试过了
gsutil acl ch -u warm-particle-718@appspot.gserviceaccount.com:WRITE gs://ctrlxbucket
确保用户具有对我的存储桶的写入权限.
请帮我弄清楚这个错误是什么意思,我坚持这里几天:(
非常感谢
PS:如果你只有一些GCS的工作样本(不是google的样本),我也会很开心,因为围绕这个话题没有很多东西.