使用键进行读取 (HBase)
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
使用一组非连续的行键进行读取。
深入探索
如需查看包含此代码示例的详细文档,请参阅以下内容:
代码示例
如未另行说明,那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可,并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情,请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis document provides a code sample in Java demonstrating how to retrieve data from Bigtable using a specific row key.\u003c/p\u003e\n"],["\u003cp\u003eThe code uses the HBase API for Java to perform a \u003ccode\u003eget\u003c/code\u003e operation on a table.\u003c/p\u003e\n"],["\u003cp\u003eThe document references external resources for setting up Bigtable client libraries and authentication.\u003c/p\u003e\n"],["\u003cp\u003eThe provided example shows how to fetch a single greeting from the table by row key.\u003c/p\u003e\n"],["\u003cp\u003eThere is a mention of the google cloud sample browser where users may find other useful examples.\u003c/p\u003e\n"]]],[],null,["Read using a noncontiguous set of row keys.\n\nExplore further\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [HBase APIs for Java hello world](/bigtable/docs/samples-hbase-java-hello)\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 // Get the first greeting by row key\n String rowKey = \"greeting0\";\n Result getResult = table.get(new Get(Bytes.toBytes(rowKey)));\n String greeting = Bytes.toString(getResult.getValue(COLUMN_FAMILY_NAME, COLUMN_NAME));\n System.out.println(\"Get a single greeting by row key\");\n System.out.printf(\"\\t%s = %s\\n\", rowKey, greeting);\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)."]]