Question

这里是代码段

`GoogleCredential凭证=新的GoogleCredential（）; credential.setAccessToken（tv.trim（））; GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder（ TRANSPORT，JSON_FACTORY，CLIENT_ID，CLIENT_SECRET，Arrays.asList（BigqueryScopes.BIGQUERY）） .build（）;

    Credential c =  flow.createAndStoreCredential(oauth2callback.tokens, null);

    bigquery = new Bigquery(TRANSPORT, JSON_FACTORY, c);



     Datasets.List datasetRequest = bigquery.datasets().list("real-time-insight");
        DatasetList datasetList = datasetRequest.execute();
        if (datasetList.getDatasets() != null) {
          List<DatasetList.Datasets> datasets = datasetList.getDatasets();
          System.out.println(" ");
          System.out.println("Available datasets\n----------------");
          System.out.println("    "+datasets.toString()+"  ");
          System.out.println(" ");
          for (DatasetList.Datasets dataset : datasets) {
            System.out.format("%s\n", dataset.getDatasetReference().getDatasetId());
            System.out.println(" ");
          }
        }

    /* DatasetList list = bigquery.datasets().list("real-time-insight").execute();
        out.println(list);
        System.out.println("lists are ::  "+list);*/
        String query = "select * from [ajay.export] where From_State like '%Alabama%' LIMIT 1";
      // QueryResponse response=null;



        Job job = new Job();
        JobConfiguration config = new JobConfiguration();
        JobConfigurationQuery queryConfig = new JobConfigurationQuery();
        config.setQuery(queryConfig);

        job.setConfiguration(config);
        queryConfig.setQuery(query);

        Insert insert = bigquery.jobs().insert("real-time-insight", job);

        insert.setProjectId("real-time-insight");
        JobReference jobId = insert.execute().getJobReference();
        System.out.println(" ");

        System.out.println("job id : " +jobId);
        System.out.println(" ");
        Job pollJob = bigquery.jobs().get("real-time-insight", jobId.getJobId()).execute();
        if (pollJob.getStatus().getState().equals("DONE")) 
        {
            System.out.println(" ");
             System.out.format("Job status %s: %s\n", 
               jobId.getJobId(), pollJob.getStatus().getState());
             System.out.println(" ");
        }
        else
        {
             try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("1. here");
        System.out.println(" ");
        System.out.println("poll job id is :: "+pollJob.getJobReference().getJobId());


       String pageToken=null; 
        System.out.println(" ");
        System.out.println("1. here  " );
        System.out.println(" ");

        GetQueryResultsResponse queryResult = bigquery.jobs()
                .getQueryResults(
                    "real-time-insight",  pollJob.getJobReference().getJobId())
                      .setPageToken(pageToken).execute();


        if (queryResult.getJobComplete()) {
              List<TableRow> rows = queryResult.getRows();

                System.out.print("\nQuery Results:\n------------\n");

                for (TableRow row : rows) {
                  for (TableCell field : row.getF()) {
                  System.out.printf("%-50s", field.getV());
                   }
                  System.out.println();
                }

            pageToken = queryResult.getPageToken();
            if (null == pageToken) {
              return;
            }
          }

        System.out.println("12345. here");



       /* List<TableRow> rows = queryResult.getRows();

        System.out.print("\nQuery Results:\n------------\n");

        for (TableRow row : rows) {
          for (TableCell field : row.getF()) {
          System.out.printf("%-50s", field.getV());
           }
          System.out.println();
        }`

堆栈跟踪

java.lang.IllegalArgumentException：[key totalRows，field private com.google.common.primitives.UnsignedLong com.google.api.services.bigquery.model.QueryResponse.totalRows] 在com.google.api.client.json.JsonParser.parseValue（JsonParser.java:630）在com.google.api.client.json.JsonParser.parse（JsonParser.java:342）在com.google.api.client.json.JsonParser.parseValue（JsonParser.java:578）在com.google.api.client.json.JsonParser.parse（JsonParser.java:281）在com.google.api.client.json.JsonObjectParser.parseAndClose（JsonObjectParser.java:87）在com.google.api.client.json.JsonObjectParser.parseAndClose（JsonObjectParser.java:81）在com.google.api.client.http.HttpResponse.parseAs（HttpResponse.java:459）在com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute（AbstractGoogleClientRequest.java:470）在com.ajay.oauth.BigQueryHandler1.doGet（BigQueryHandler1.java:61）在javax.servlet.http.HttpServlet.service（HttpServlet.java:617）在javax.servlet.http.HttpServlet.service（HttpServlet.java:717）在org.mortbay.jetty.servlet.ServletHolder.handle（ServletHolder.java:511）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1166）在com.google.appengine.api.socket.dev.DevSocketFilter.doFilter（DevSocketFilter.java:74）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.appengine.tools.development.ResponseRewriterFilter.doFilter（ResponseRewriterFilter.java:127）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.appengine.tools.development.HeaderVerificationFilter.doFilter（HeaderVerificationFilter.java:34）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter（ServeBlobFilter.java:63）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter（TransactionCleanupFilter.java:43）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.appengine.tools.development.StaticFileFilter.doFilter（StaticFileFilter.java:125）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest（DevAppServerModulesFilter.java:366）在com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest（DevAppServerModulesFilter.java:349）在com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter（DevAppServerModulesFilter.java:116）在org.mortbay.jetty.servlet.ServletHandler $ CachedChain.doFilter（ServletHandler.java:1157）在org.mortbay.jetty.servlet.ServletHandler.handle（ServletHandler.java:388）在org.mortbay.jetty.security.SecurityHandler.handle（SecurityHandler.java:216）在org.mortbay.jetty.servlet.SessionHandler.handle（SessionHandler.java:182）在org.mortbay.jetty.handler.ContextHandler.handle（ContextHandler.java:765）在org.mortbay.jetty.webapp.WebAppContext.handle（WebAppContext.java:418）在com.google.appengine.tools.development.DevAppEngineWebAppContext.handle（DevAppEngineWebAppContext.java:98）在org.mortbay.jetty.handler.HandlerWrapper.handle（HandlerWrapper.java:152）在com.google.appengine.tools.development.JettyContainerService $ ApiProxyHandler.handle（JettyContainerService.java:490）在org.mortbay.jetty.handler.HandlerWrapper.handle（HandlerWrapper.java:152）在org.mortbay.jetty.Server.handle（Server.java:326）在org.mortbay.jetty.HttpConnection.handleRequest（HttpConnection.java:542） at org.mortbay.jetty.HttpConnection $ RequestHandler.headerComplete（HttpConnection.java:923）在org.mortbay.jetty.HttpParser.parseNext（HttpParser.java:547）在org.mortbay.jetty.HttpParser.parseAvailable（HttpParser.java:212）在org.mortbay.jetty.HttpConnection.handle（HttpConnection.java:404）在org.mortbay.io.nio.SelectChannelEndPoint.run（SelectChannelEndPoint.java:409）在org.mortbay.thread.QueuedThreadPool $ PoolThread.run（QueuedThreadPool.java:582）引起：java.lang.IllegalArgumentException：期望的原始类，但得到：class com.google.common.primitives.UnsignedLong 在com.google.api.client.util.Data.parsePrimitiveValue（Data.java:453）在com.google.api.client.json.JsonParser.parseValue（JsonParser.java:628）

Answer 1

免责声明：我没有BigQuery的第一手经验，以下是一般编程推理：

根据Guava docs，UnsignedLong是无符号长值的包装类。另外，根据文档，它有一个longValue()方法，正如您所料，它以long形式返回值。

在某处（确切地说，您发布的代码中没有立即显示），您有一个（可能是间接地）调用com.google.api.client.util.Data.parsePrimitiveValue(Data.java:453)的方法，它看起来像这样（source）：

public static Object parsePrimitiveValue(Type type, String stringValue) {
    Class<?> primitiveClass = type instanceof Class<?> ? (Class<?>) type : null;
    ...
    if (primitiveClass == Character.class || primitiveClass == char.class) {....}
    if (primitiveClass == Boolean.class || primitiveClass == boolean.class) {... }

    //checks for each primitive class to see if it matches the type passed in
    //if no primitive type is matched:
    throw new IllegalArgumentException("expected primitive class, but got: " + type);
}

显然，这个方法是使用类型参数UnsignedLong调用的。你需要找出发生的位置（提示：遵循堆栈跟踪），然后找出传递给它的参数的来源（提示：进一步跟踪堆栈跟踪）。我打赌你会找到一种方法来解决这个问题：

someMethod(){
 UnsignedLong val;
 ...
 parsePrimitiveValue(val.getClass().getName(), val.toString());
 ...
}

因此，弄清楚如何将对某事的调用改为

parsePrimitiveValue(Long.class.getName(),  val.longValue().toString())

IllegalArgumentException：期望的原始类，但是得到了UnsignedLong

1 个答案: