BigQuery：如何将库加载到 Java 代码中

Question

I am a new dev in Bigquery. I am following tutorial in https://developers.google.com/bigquery/bigquery-api-quickstart with Java code and imported library from https://developers.google.com/bigquery/client-libraries . However, I couldn't load library into Java code such as import com.google.api.services.bigquery.model.DatasetList; import com.google.api.services.bigquery.model.GetQueryResultsResponse; import com.google.api.services.bigquery.model.Job import com.google.api.services.bigquery.model.DatasetList; import com.google.api.services.bigquery.model.GetQueryResultsResponse; import com.google.api.services.bigquery.model.Job import com.google.api.services.bigquery.model.DatasetList; import com.google.api.services.bigquery.model.GetQueryResultsResponse; import com.google.api.services.bigquery.model.Job Please tell me know how to solve this case.

Thanks

Answer 1

You need to add the necessary .jar files (separated by : ) to your classpath, ie

javac -cp path/to/jar1:path/to/jar2 <your_class.java>

java -cp path/to/jar1:path/to/jar2 <your_class>

alternatively you can add the .jar files to the CLASSPATH environment variable, ie (in unix systems)

export CLASSPATH=$CLASSPATH:/path/to/some.jar:/path/to/some/other.jar

This can change depending on your environment (ie if you are running these in a webapp server)

Answer 2

if you are using maven this is done easily with the following 2 dependence (you can changes the version to the latest one)

    <dependency>
        <groupId>com.google.apis</groupId>
        <artifactId>google-api-services-storage</artifactId>
        <version>v1-rev12-1.19.0</version>
    </dependency>

    <dependency>
        <groupId>com.google.apis</groupId>
        <artifactId>google-api-services-bigquery</artifactId>
        <version>v2-rev168-1.19.0</version>
    </dependency> 

Answer 3

Are you using Maven and the BigQuery Java Client? It is recommended to use the Java client. If so, you can easily set it up by configuring your pom.xml file:

<dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-bigquery</artifactId>
  <version>1.111.1</version>
</dependency>

More info on the BigQuery Java client: https://github.com/googleapis/java-bigquery