写一个java代码来获取dataworks中节点的字段血缘关系

要获取DataWorks中节点的字段血缘关系，您可以使用DataWorks OpenAPI来查询相关信息。以下是一个示例的Java代码，用于获取节点的字段血缘关系：

import com.aliyun.dataworks.openapi.client.ApiException;
import com.aliyun.dataworks.openapi.client.DefaultOpenApiClient;
import com.aliyun.dataworks.openapi.client.OpenApiClient;
import com.aliyun.dataworks.openapi.client.auth.CredentialsProvider;
import com.aliyun.dataworks.openapi.client.auth.StaticCredentialsProvider;
import com.aliyun.dataworks.openapi.client.config.ClientConfiguration;
import com.aliyun.dataworks.openapi.client.constant.CommonConstants;
import com.aliyun.dataworks.openapi.client.constant.RequestConstant;
import com.aliyun.dataworks.openapi.client.constant.ResponseConstant;
import com.aliyun.dataworks.openapi.client.model.ProjectBaseInfo;
import com.aliyun.dataworks.openapi.client.model.TableEntity;
import com.aliyun.dataworks.openapi.client.model.TableFieldEntity;
import com.aliyun.dataworks.openapi.client.model.TableLineageEntity;
import com.aliyun.dataworks.openapi.client.model.TableLineageListEntity;

import java.util.ArrayList;
import java.util.List;

public class DataWorksFieldLineageExample {
    public static void main(String[] args) {
        // DataWorks账号信息
        String accessKeyId = "<AccessKeyId>";
        String accessKeySecret = "<AccessKeySecret>";
        
        // DataWorks接口地址
        String endpoint = "<DataWorksEndpoint>";
        
        // 项目信息
        Long projectId = <ProjectId>;
        
        // 节点信息
        Long nodeId = <NodeId>;
        
        // 创建OpenApiClient
        CredentialsProvider credentialsProvider = new StaticCredentialsProvider(accessKeyId, accessKeySecret);
        ClientConfiguration config = new ClientConfiguration(endpoint);
        OpenApiClient client = new DefaultOpenApiClient(credentialsProvider, config);
        
        try {
            // 获取项目信息
            ProjectBaseInfo projectInfo = client.getProjectById(projectId);
            
            // 获取节点信息
            TableEntity tableEntity = client.getTableEntity(projectId, nodeId);
            
            // 获取字段信息
            List<TableFieldEntity> fields = tableEntity.getFields();
            
            // 获取字段血缘关系
            List<TableLineageEntity> lineageList = new ArrayList<>();
            for (TableFieldEntity field : fields) {
                TableLineageListEntity lineage = client.getTableFieldLineage(projectId, nodeId, field.getFieldName());
                lineageList.add(lineage.getLineage());
            }
            
            // 处理字段血缘关系数据
            for (TableLineageEntity lineage : lineageList) {
                String fieldName = lineage.getFieldName();
                List<TableLineageEntity> ancestors = lineage.getAncestors();
                List<TableLineageEntity> descendants = lineage.getDescendants();
                
                // TODO: 处理字段血缘关系数据
                
                // 示例：打印字段的上游和下游节点信息
                System.out.println("字段名称: " + fieldName);
                System.out.println("上游节点: " + ancestors);
                System.out.println("下游节点: " + descendants);
                System.out.println();
            }
        } catch (ApiException e) {
            // 处理异常
            e.printStackTrace();
        }
    }
}

请根据实际情况替换代码中的占位符，并根据您的需求进行适当的处理和扩展。这个示例代码使用了DataWorks OpenAPI的Java SDK来获取节点的字段血缘关系，并对结果进行了简单的处理和打印。您可以根据自己的业务需求对字段血缘关系数据进行进一步处理和使用。