没有在本地应用程序中加载servlet的RemoteApi调用

Question

如果我将脚本作为java应用程序运行，那么我正在尝试这个示例https://cloud.google.com/appengine/docs/java/tools/remoteapi --一切都运行得很好，但是当我作为servlet运行脚本时，它总是永远加载，不会抛出任何错误。在本地主机上也可以很好地工作。我还注意到，当查询完成时，当我注释掉它(datastore.put)时，servlet会立即加载。

import java.io.IOException;
import javax.servlet.http.*;
import com.google.appengine.api.datastore.DatastoreService;
import com.google.appengine.api.datastore.DatastoreServiceFactory;
import com.google.appengine.api.datastore.Entity;
import com.google.appengine.tools.remoteapi.RemoteApiInstaller;
import com.google.appengine.tools.remoteapi.RemoteApiOptions;

@SuppressWarnings("serial")
public class Gae_java_Servlet extends HttpServlet {
    public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {

    RemoteApiOptions options = new RemoteApiOptions()
        .server("java-dot-project.appspot.com", 443)
        .useApplicationDefaultCredential();
    RemoteApiInstaller installer = new RemoteApiInstaller();
    installer.install(options);
    try {
        DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
        System.out.println("Key of new entity is " +
                datastore.put(new Entity("Hello Remote API!")));
    } finally {
        installer.uninstall();
    }
    }
}

Answer 1

我想出来了，需要用RemoteApiOptions().useServiceAccountCredential("service电子邮件“，”p12key“来代替useApplicationDefaultCredential()