{"id":61487,"date":"2024-10-13T11:29:17","date_gmt":"2024-10-13T03:29:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61487\/"},"modified":"2024-10-13T11:29:17","modified_gmt":"2024-10-13T03:29:17","slug":"google-leveldb%e5%9c%a8linux%e4%b8%8b%e7%9a%84%e7%b7%a8%e8%ad%af%e5%8f%8a%e5%9c%a8c%e4%b8%ad%e7%9a%84%e6%87%89%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61487\/","title":{"rendered":"Google Leveldb\u5728Linux\u4e0b\u7684\u7de8\u8b6f\u53ca\u5728C++\u4e2d\u7684\u61c9\u7528"},"content":{"rendered":"<h1 id=\"google-leveldb%e5%9c%a8linux%e4%b8%8b%e7%9a%84%e7%b7%a8%e8%ad%af%e5%8f%8a%e5%9c%a8c%e4%b8%ad%e7%9a%84%e6%87%89%e7%94%a8-mXpnGCbfUr\">Google LevelDB\u5728Linux\u4e0b\u7684\u7de8\u8b6f\u53ca\u5728C++\u4e2d\u7684\u61c9\u7528<\/h1>\n<p>LevelDB\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u7531Google\u958b\u767c\uff0c\u4e3b\u8981\u7528\u65bc\u8655\u7406\u5927\u91cf\u6578\u64da\u7684\u61c9\u7528\u3002\u5b83\u7684\u8a2d\u8a08\u76ee\u7684\u662f\u70ba\u4e86\u63d0\u4f9b\u5feb\u901f\u7684\u8b80\u53d6\u548c\u5beb\u5165\u6027\u80fd\uff0c\u4e26\u4e14\u652f\u6301\u58d3\u7e2e\u548c\u6301\u4e45\u5316\u5b58\u5132\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728Linux\u74b0\u5883\u4e0b\u7de8\u8b6fLevelDB\uff0c\u4e26\u63a2\u8a0e\u5176\u5728C++\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e5%9c%a8linux%e4%b8%8b%e7%b7%a8%e8%ad%afleveldb-mXpnGCbfUr\">\u5728Linux\u4e0b\u7de8\u8b6fLevelDB<\/h2>\n<p>\u5728\u958b\u59cb\u7de8\u8b6fLevelDB\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u60a8\u7684Linux\u7cfb\u7d71\u4e0a\u5df2\u5b89\u88dd\u5fc5\u8981\u7684\u4f9d\u8cf4\u9805\u3002\u4ee5\u4e0b\u662f\u7de8\u8b6fLevelDB\u7684\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f1%ef%bc%9a%e5%ae%89%e8%a3%9d%e4%be%9d%e8%b3%b4%e9%a0%85-mXpnGCbfUr\">\u6b65\u9a5f1\uff1a\u5b89\u88dd\u4f9d\u8cf4\u9805<\/h3>\n<ul>\n<li>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5b89\u88ddGit\u548cCMake\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u9032\u884c\u5b89\u88dd\uff1a<\/li>\n<pre><code>sudo apt-get update\nsudo apt-get install git cmake<\/code><\/pre>\n<\/ul>\n<h3 id=\"%e6%ad%a5%e9%a9%9f2%ef%bc%9a%e4%b8%8b%e8%bc%89leveldb%e6%ba%90%e7%a2%bc-mXpnGCbfUr\">\u6b65\u9a5f2\uff1a\u4e0b\u8f09LevelDB\u6e90\u78bc<\/h3>\n<ul>\n<li>\u4f7f\u7528Git\u514b\u9686LevelDB\u7684\u6e90\u78bc\u5eab\uff1a<\/li>\n<pre><code>git clone https:\/\/github.com\/google\/leveldb.git<\/code><\/pre>\n<\/ul>\n<h3 id=\"%e6%ad%a5%e9%a9%9f3%ef%bc%9a%e7%b7%a8%e8%ad%afleveldb-mXpnGCbfUr\">\u6b65\u9a5f3\uff1a\u7de8\u8b6fLevelDB<\/h3>\n<ul>\n<li>\u9032\u5165LevelDB\u76ee\u9304\u4e26\u5275\u5efa\u4e00\u500b\u69cb\u5efa\u76ee\u9304\uff1a<\/li>\n<pre><code>cd leveldb\nmkdir build\ncd build<\/code><\/pre>\n<li>\u4f7f\u7528CMake\u751f\u6210Makefile\uff1a<\/li>\n<pre><code>cmake ..<\/code><\/pre>\n<li>\u7de8\u8b6fLevelDB\uff1a<\/li>\n<pre><code>make<\/code><\/pre>\n<\/ul>\n<p>\u5b8c\u6210\u5f8c\uff0c\u60a8\u5c07\u5728build\u76ee\u9304\u4e2d\u627e\u5230\u7de8\u8b6f\u597d\u7684\u5eab\u6587\u4ef6\u3002<\/p>\n<h2 id=\"%e5%9c%a8c%e4%b8%ad%e7%9a%84%e6%87%89%e7%94%a8-mXpnGCbfUr\">\u5728C++\u4e2d\u7684\u61c9\u7528<\/h2>\n<p>LevelDB\u63d0\u4f9b\u4e86\u4e00\u500b\u7c21\u55ae\u7684API\uff0c\u65b9\u4fbf\u958b\u767c\u8005\u5728C++\u4e2d\u4f7f\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728C++\u4e2d\u4f7f\u7528LevelDB\u9032\u884c\u6578\u64da\u7684\u5beb\u5165\u548c\u8b80\u53d6\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-mXpnGCbfUr\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>#include \n#include \n\nint main() {\n    \/\/ \u5275\u5efa\u4e00\u500bLevelDB\u6578\u64da\u5eab\n    leveldb::DB* db;\n    leveldb::Options options;\n    options.create_if_missing = true;\n\n    leveldb::Status status = leveldb::DB::Open(options, \"testdb\", &amp;db);\n    if (!status.ok()) {\n        std::cerr &lt;&lt; \"\u7121\u6cd5\u6253\u958b\u6578\u64da\u5eab: \" &lt;&lt; status.ToString() &lt;&lt; std::endl;\n        return 1;\n    }\n\n    \/\/ \u5beb\u5165\u6578\u64da\n    leveldb::WriteOptions write_options;\n    status = db-&gt;Put(write_options, \"key1\", \"value1\");\n    if (!status.ok()) {\n        std::cerr &lt;&lt; \"\u5beb\u5165\u5931\u6557: \" &lt;&lt; status.ToString() &lt;&lt; std::endl;\n    }\n\n    \/\/ \u8b80\u53d6\u6578\u64da\n    leveldb::ReadOptions read_options;\n    std::string value;\n    status = db-&gt;Get(read_options, \"key1\", &amp;value);\n    if (status.ok()) {\n        std::cout &lt;&lt; \"\u8b80\u53d6\u5230\u7684\u503c: \" &lt;&lt; value &lt;&lt; std::endl;\n    } else {\n        std::cerr &lt;&lt; \"\u8b80\u53d6\u5931\u6557: \" &lt;&lt; status.ToString() &lt;&lt; std::endl;\n    }\n\n    \/\/ \u95dc\u9589\u6578\u64da\u5eab\n    delete db;\n    return 0;\n}<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5275\u5efa\u4e86\u4e00\u500bLevelDB\u6578\u64da\u5eab\uff0c\u7136\u5f8c\u5beb\u5165\u4e86\u4e00\u500b\u9375\u503c\u5c0d\uff0c\u63a5\u8457\u8b80\u53d6\u4e26\u8f38\u51fa\u8a72\u503c\u3002\u9019\u5c55\u793a\u4e86LevelDB\u7684\u57fa\u672c\u64cd\u4f5c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9032\u884c\u64f4\u5c55\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mXpnGCbfUr\">\u7e3d\u7d50<\/h2>\n<p>LevelDB\u662f\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u9069\u5408\u7528\u65bc\u9700\u8981\u5feb\u901f\u8b80\u5beb\u7684\u61c9\u7528\u3002\u901a\u904e\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u5728Linux\u74b0\u5883\u4e0b\u8f15\u9b06\u7de8\u8b6fLevelDB\uff0c\u4e26\u5728C++\u4e2d\u9032\u884c\u61c9\u7528\u958b\u767c\u3002\u82e5\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u4f3a\u670d\u5668\u652f\u6301\u4f86\u904b\u884c\u60a8\u7684\u61c9\u7528\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u4ee5\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5eab\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u5728Linux\u4e0b\u7de8\u8b6fGoogle LevelDB\uff0c\u4e26\u4e86\u89e3\u5176\u5728C++\u4e2d\u7684\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\u5b58\u5132\u8207\u6aa2\u7d22\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61487","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61487","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=61487"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61487\/revisions"}],"predecessor-version":[{"id":61488,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61487\/revisions\/61488"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61487"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61487"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61487"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}