java - 来自 servlet 的 RemoteApi 调用未在本地应用程序引擎应用程序中加载

Question

我正在尝试这个例子https://cloud.google.com/appengine/docs/java/tools/remoteapi 如果我将脚本作为 java 应用程序运行，一切都会正常工作，但是当我将其作为 servlet 运行时，它总是会永远加载并且不会抛出任何错误。在本地主机上也可以正常工作。我还注意到在进行查询时会发生这种情况，当我将其注释掉(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

我想通了，需要使用 RemoteApiOptions().useServiceAccountCredential("service email", "p12key") 而不是 useApplicationDefaultCredential()