Lire une ligne (HBase)
Restez organisé à l'aide des collections
Enregistrez et classez les contenus selon vos préférences.
Lire une ligne.
En savoir plus
Pour obtenir une documentation détaillée incluant cet exemple de code, consultez les pages suivantes :
Exemple de code
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 code sample demonstrates how to read a specific row from a Bigtable table using its row key.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ereadRow\u003c/code\u003e function takes the project ID, instance ID, and table ID as parameters to establish a connection and retrieve a specific row.\u003c/p\u003e\n"],["\u003cp\u003eTo run the code example, you need to replace the placeholder variables (project ID, instance ID, table ID) with your own Bigtable project, instance, and table information.\u003c/p\u003e\n"],["\u003cp\u003eTo authenticate and use the Bigtable client library, you must install the library and set up Application Default Credentials (ADC) for authentication.\u003c/p\u003e\n"],["\u003cp\u003eThere are documentation links provided for further reading on reading data, using the Bigtable client libraries, and setting up ADC, and there is a link to the Google Cloud sample browser for other code examples.\u003c/p\u003e\n"]]],[],null,["Read a row.\n\nExplore further\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Read examples](/bigtable/docs/reading-data)\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 * Example of reading an individual row key.\n */\n public static void readRow() {\n // TODO(developer): Replace these variables before running the sample.\n String projectId = \"my-project-id\";\n String instanceId = \"my-instance-id\";\n String tableId = \"mobile-time-series\";\n readRow(projectId, instanceId, tableId);\n }\n\n public static void readRow(String projectId, String instanceId, String tableId) {\n // Initialize client that will be used to send requests. This client only needs to be created\n // once, and can be reused for multiple requests.\n try (Connection connection = BigtableConfiguration.connect(projectId, instanceId)) {\n Table table = connection.getTable(TableName.valueOf(tableId));\n\n byte[] rowkey = Bytes.toBytes(\"phone#4c410523#20190501\");\n\n Result row = table.get(new Get(rowkey));\n printRow(row);\n\n } catch (IOException e) {\n System.out.println(\n \"Unable to initialize service client, as a network error occurred: \\n\" + e.toString());\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)."]]