無法在Google App引擎上部署應用程序：appengine-web.xml不包含 <threadsafe> 元件

Question

當我點擊在netbeans中的谷歌應用引擎上部署應用程序時，這些是產生的錯誤消息。 讓我告訴你，最初，我輸入的密碼錯誤，應用程序無法部署。 但現在，當我點擊部署應用程序時，它不會問我電子郵件或密碼。

無論如何我如何解決這些錯誤？

Reading application configuration data...
Bad configuration: appengine-web.xml does not contain a <threadsafe> element.
See http://code.google.com/appengine/docs/java/config/appconfig.html#Using_Concurrent_Requests for more information.
You probably want to enable concurrent requests.
Please see the logs [C:\Users\user\AppData\Local\Temp\appcfg6534187344911851576.log] for further information.
May 28, 2012 12:35:54 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
INFO: Successfully processed W:/UnderTest/NetbeansCurrent/Guestbook/build/web\WEB-INF/appengine-web.xml
May 28, 2012 12:35:54 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
SEVERE: Received exception processing W:/UnderTest/NetbeansCurrent/Guestbook/build/web\WEB-INF/appengine-web.xml
com.google.apphosting.utils.config.AppEngineConfigException: appengine-web.xml does not contain a <threadsafe> element.
See http://code.google.com/appengine/docs/java/config/appconfig.html#Using_Concurrent_Requests for more information.
You probably want to enable concurrent requests.
at com.google.apphosting.utils.config.AppEngineWebXmlReader.readAppEngineWebXml(AppEngineWebXmlReader.java:79)
at com.google.appengine.tools.admin.Application.<init>(Application.java:139)
at com.google.appengine.tools.admin.Application.readApplication(Application.java:225)
at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:145)
at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:69)
at com.google.appengine.tools.admin.AppCfg.main(AppCfg.java:65)

編輯：我在linux中嘗試了同樣的事情，這次我輸入了正確的密碼。然后我也得到了例外：

May 28, 2012 1:26:51 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
INFO: Successfully processed /home/non-admin/NetBeansProjects/Guestbook/build/web/WEB-INF/appengine-web.xml
May 28, 2012 1:26:51 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
SEVERE: Received exception processing /home/non-admin/NetBeansProjects/Guestbook/build/web/WEB-INF/appengine-web.xml
com.google.apphosting.utils.config.AppEngineConfigException: appengine-web.xml does not contain a <threadsafe> element.
See http://code.google.com/appengine/docs/java/config/appconfig.html#Using_Concurrent_Requests for more information.
You probably want to enable concurrent requests.
at  com.google.apphosting.utils.config.AppEngineWebXmlReader.readAppEngineWebXml(AppEngineWebXmlReader.java:79)
at com.google.appengine.tools.admin.Application.<init>(Application.java:139)
at com.google.appengine.tools.admin.Application.readApplication(Application.java:225)
at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:145)
at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:69)
at com.google.appengine.tools.admin.AppCfg.main(AppCfg.java:65)
Bad configuration: appengine-web.xml does not contain a <threadsafe> element.
See http://code.google.com/appengine/docs/java/config/appconfig.html#Using_Concurrent_Requests for more information.
You probably want to enable concurrent requests.
Please see the logs [/tmp/appcfg6804971430427378027.log] for further information.
Reading application configuration data...
 May 28, 2012 1:41:52 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
INFO: Successfully processed /home/non-admin/NetBeansProjects/Guestbook/build/web/WEB-INF/appengine-web.xml
May 28, 2012 1:41:52 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
SEVERE: Received exception processing /home/non-admin/NetBeansProjects/Guestbook/build/web/WEB-INF/appengine-web.xml
com.google.apphosting.utils.config.AppEngineConfigException: appengine-web.xml does not contain a <threadsafe> element.
See http://code.google.com/appengine/docs/java/config/appconfig.html#Using_Concurrent_Requests for more information.
You probably want to enable concurrent requests.
at com.google.apphosting.utils.config.AppEngineWebXmlReader.readAppEngineWebXml(AppEngineWebXmlReader.java:79)
at com.google.appengine.tools.admin.Application.<init>(Application.java:139)
at com.google.appengine.tools.admin.Application.readApplication(Application.java:225)
at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:145)
at com.google.appengine.tools.admin.AppCfg.<init>(AppCfg.java:69)
at com.google.appengine.tools.admin.AppCfg.main(AppCfg.java:65)
 Bad configuration: appengine-web.xml does not contain a <threadsafe> element.
 See http://code.google.com/appengine/docs/java/config/appconfig.html#Using_Concurrent_Requests for more information.
 You probably want to enable concurrent requests.
 Please see the logs [/tmp/appcfg8910063489276425896.log] for further information.

Answer 1

以@alex所說的為基礎......

您有第一個錯誤日志

Bad configuration: appengine-web.xml does not contain a <threadsafe> element. See http://code.google.com/appengine/docs/java/config/appconfig.html#Using_Concurrent_Requests for more information.

第一行

Bad configuration: appengine-web.xml does not contain a <threadsafe> element.

告訴你什么是錯的。 第二行

See http://code.google.com/appengine/docs/java/config/appconfig.html#Using_Concurrent_Requests for more information.

指出要研究的GAE文檔的哪一部分來解決您的問題。

我必須承認，錯誤日志條目非常明確且有用。 我希望更多可以按照這里為你做的例子。 如果你仍然卡住了，請你准確說明你所堅持的內容？

Answer 2

只需添加

<threadsafe>true</threadsafe>

你的war / WEB-INF / appengine-web.xml

像這樣：

    <?xml version="1.0" encoding="UTF-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
<application></application>
<version>1</version>
<threadsafe>true</threadsafe>

Answer 3

我認為你已經將這個threadsafe屬性添加到web.xml而不是appengin-web.xml。 確保將其添加到appenginweb.xml。 謝謝。