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Sauf indication contraire, le contenu de cette page est régi par une licence Creative Commons Attribution 4.0, et les échantillons de code sont régis par une licence Apache 2.0. Pour en savoir plus, consultez les Règles du site Google Developers. Java est une marque déposée d'Oracle et/ou de ses sociétés affiliées.
[[["Facile à comprendre","easyToUnderstand","thumb-up"],["J'ai pu résoudre mon problème","solvedMyProblem","thumb-up"],["Autre","otherUp","thumb-up"]],[["Difficile à comprendre","hardToUnderstand","thumb-down"],["Informations ou exemple de code incorrects","incorrectInformationOrSampleCode","thumb-down"],["Il n'y a pas l'information/les exemples dont j'ai besoin","missingTheInformationSamplesINeed","thumb-down"],["Problème de traduction","translationIssue","thumb-down"],["Autre","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis page provides a Java code sample demonstrating how to read and print a row from Bigtable.\u003c/p\u003e\n"],["\u003cp\u003eThe code utilizes the Bigtable client library, which requires installation, as detailed in the provided link.\u003c/p\u003e\n"],["\u003cp\u003eProper authentication is essential, and the document directs users to set up Application Default Credentials for local development.\u003c/p\u003e\n"],["\u003cp\u003eThe provided code sample contains a method called \u003ccode\u003eprintRow\u003c/code\u003e, which iterates through all of the cells in a row, printing data from each of the column families.\u003c/p\u003e\n"]]],[],null,["Read and print a row.\n\nCode sample \n\nJava\n\n\nTo learn how to install and use the client library for Bigtable, see\n[Bigtable client libraries](/bigtable/docs/reference/libraries).\n\n\nTo authenticate to Bigtable, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n\n import com.google.cloud.bigtable.hbase.BigtableConfiguration;\n import java.io.IOException;\n import java.util.ArrayList;\n import java.util.List;\n import org.apache.hadoop.hbase.Cell;\n import org.apache.hadoop.hbase.TableName;\n import org.apache.hadoop.hbase.client.Connection;\n import org.apache.hadoop.hbase.client.Get;\n import org.apache.hadoop.hbase.client.Result;\n import org.apache.hadoop.hbase.client.ResultScanner;\n import org.apache.hadoop.hbase.client.Scan;\n import org.apache.hadoop.hbase.client.Table;\n import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;\n import org.apache.hadoop.hbase.filter.Filter;\n import org.apache.hadoop.hbase.filter.MultiRowRangeFilter;\n import org.apache.hadoop.hbase.filter.MultiRowRangeFilter.RowRange;\n import org.apache.hadoop.hbase.filter.RegexStringComparator;\n import org.apache.hadoop.hbase.filter.ValueFilter;\n import org.apache.hadoop.hbase.util.Bytes;\n\n public class Reads {\n\n // Write your code here.\n // ...\n\n private static void printRow(Result row) {\n System.out.printf(\"Reading data for %s%n\", Bytes.toString(row.rawCells()[0].getRowArray()));\n String colFamily = \"\";\n for (Cell cell : row.rawCells()) {\n String currentFamily = Bytes.toString(cell.getFamilyArray());\n if (!currentFamily.equals(colFamily)) {\n colFamily = currentFamily;\n System.out.printf(\"Column Family %s%n\", colFamily);\n }\n System.out.printf(\n \"\\t%s: %s @%s%n\",\n Bytes.toString(cell.getQualifierArray()),\n Bytes.toString(cell.getValueArray()),\n cell.getTimestamp());\n }\n System.out.println();\n }\n }\n\nWhat's next\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=bigtable)."]]
