{"id":1674,"date":"2020-11-29T17:37:06","date_gmt":"2020-11-29T09:37:06","guid":{"rendered":"https:\/\/www.yusian.com\/blog\/?p=1674"},"modified":"2020-12-01T08:37:29","modified_gmt":"2020-12-01T00:37:29","slug":"java%e6%95%b0%e6%8d%ae%e5%ba%93%e8%bf%9e%e6%8e%a5%e6%b1%a0druid%e7%9a%84%e5%9f%ba%e6%9c%ac%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/java\/2020\/11\/29\/1737061674.html","title":{"rendered":"Java\u6570\u636e\u5e93\u8fde\u63a5\u6c60Druid\u7684\u57fa\u672c\u4f7f\u7528"},"content":{"rendered":"<h3>0\u3001\u53c2\u7167c3p0\u7684\u57fa\u672c\u4f7f\u7528<\/h3>\n<ul>\n<li>\u53c2\u8003\u94fe\u63a5\uff1a<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/www.yusian.com\/blog\/java\/2020\/11\/29\/1708081670.html\">Java\u6570\u636e\u5e93\u8fde\u63a5\u6c60c3p0\u7684\u57fa\u672c\u4f7f\u7528<\/a><\/li>\n<\/ul>\n<h3>1\u3001\u5bfc\u5165jar\u5305<\/h3>\n<ul>\n<li>Github\u5730\u5740\uff1a<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/github.com\/alibaba\/druid\">https:\/\/github.com\/alibaba\/druid<\/a><\/li>\n<li>\u5728Tags\u4e2d\u627e\u5230\u76f8\u5bf9\u5e94\u7684\u7248\u672c\uff0c\u8bf4\u660e\u4e2d\u6709\u4e0b\u8f7d\u8fde\u63a5\uff0c\u4e0b\u8f7djar\u5305\u5bfc\u5165\u5230\u5de5\u7a0b<br \/>\n<!--more--><\/li>\n<\/ul>\n<h3>2\u3001\u7f16\u5199\u914d\u7f6e\u6587\u4ef6<\/h3>\n<ul>\n<li>\u4e0ec3p0\u4e0d\u4e00\u6837\u7684\u5730\u65b9\u662fdruid\u53ef\u4ee5\u901a\u8fc7Properties\u5bf9\u8c61\u6765\u521d\u59cb\u5316\u8fde\u63a5\u6c60\uff0c\u4e5f\u5c31\u662f\u8bf4\u914d\u7f6e\u6587\u4ef6\u53ef\u4ee5\u968f\u4fbf\u81ea\u5b9a\u4e49<\/p>\n<\/li>\n<li>\n<p>\u914d\u7f6e\u6587\u4ef6\u540c\u6837\u9700\u8981\u5305\u542b\u521d\u59cb\u5316\u6570\u636e\u5e93\u53ca\u8fde\u63a5\u6570\u636e\u5e93\u7684\u76f8\u5173\u53c2\u6570\uff0c\u5982\uff1a<\/p>\n<pre><code class=\"language-properties line-numbers\">driverClassName=com.mysql.jdbc.Driver\nurl=jdbc:mysql:\/\/example.domain.com:3306\/db?useSSL=false\nusername=username\npassword=password\ninitialSize=2\nmaxActive=10\nmaxWait=3000\n<\/code><\/pre>\n<p><!--more--><\/li>\n<\/ul>\n<h3>3\u3001\u521b\u5efaDataSource\u5bf9\u8c61<\/h3>\n<pre><code class=\"language-java line-numbers\">public class DruidDemo {\n    public static void main(String[] args) throws Exception {\n        \/\/ \u83b7\u53d6Properties\u6587\u4ef6\n        ClassLoader loader = DruidDemo.class.getClassLoader();\n        InputStream duridIs = loader.getResourceAsStream(\"druid.properties\");\n        Properties props = new Properties();\n        props.load(duridIs);\n        \/\/ \u83b7\u53d6DataSource\u5bf9\u8c61\uff0c\u521b\u5efaConnection\u5bf9\u8c61\n        DataSource dataSource = DruidDataSourceFactory.createDataSource(props);\n        for (int i = 0; i &lt; 10; i++) {\n            Connection conn = dataSource.getConnection();\n            System.out.println(conn);\n        }\n    }\n}\n<\/code><\/pre>\n<h3>PS\uff1a\u5c06\u6570\u636e\u5e93\u8fde\u63a5\u5c01\u88c5\u6210\u5de5\u5177\u7c7b<\/h3>\n<pre><code class=\"language-java line-numbers\">package com.yusian.pools;\n\nimport com.alibaba.druid.pool.DruidDataSourceFactory;\n\nimport javax.sql.DataSource;\nimport java.sql.Connection;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\nimport java.sql.Statement;\nimport java.util.Properties;\n\npublic class Utils {\n\n    \/\/ DataSource\n    private static DataSource ds;\n    static {\n        ClassLoader classLoader = Utils.class.getClassLoader();\n        try {\n            Properties pro = new Properties();\n            pro.load(classLoader.getResourceAsStream(\"druid.properties\"));\n            ds = DruidDataSourceFactory.createDataSource(pro);\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n\n    \/**\n     * \u4ece\u8fde\u63a5\u6c60\u83b7\u53d6\u8fde\u63a5\u5bf9\u8c61\n     * @return \u8fde\u63a5\u5bf9\u8c61\n     * @throws SQLException\n     *\/\n    public static Connection getConnection() throws SQLException {\n        if (ds == null) throw new SQLException(\"\u521b\u5efa\u8fde\u63a5\u6c60\u5931\u8d25\uff01\");\n        return ds.getConnection();\n    }\n\n    \/**\n     * \u91ca\u653e\u67e5\u8be2\u7c7b\u64cd\u4f5c\u7684\u6240\u6709\u8d44\u6e90\n     * @param conn \u8fde\u63a5\u5bf9\u8c61\uff0c\u5f52\u8fd8\u5230\u8fde\u63a5\u6c60\n     * @param stmt \u67e5\u8be2\u5bf9\u8c61\n     * @param retSet \u7ed3\u679c\u5bf9\u8c61\n     *\/\n    public static void close(Connection conn, Statement stmt, ResultSet retSet) {\n        releaseCloseableObject(retSet);\n        releaseCloseableObject(stmt);\n        releaseCloseableObject(conn);\n    }\n\n    \/**\n     * \u91ca\u653e\u66f4\u65b0\u7c7b\u64cd\u4f5c\u7684\u6240\u6709\u8d44\u6e90\n     * @param conn \u8fde\u63a5\u5bf9\u8c61\n     * @param stmt \u67e5\u8be2\u5bf9\u8c61\n     *\/\n    public static void close(Connection conn, Statement stmt) {\n        close(conn, stmt, null);\n    }\n\n    \/**\n     * \u91ca\u653eAutoCloseable\u5bf9\u8c61\u8d44\u6e90\n     * @param object \u9700\u8981\u91ca\u653e\u7684\u5bf9\u8c61\n     *\/\n    public static void releaseCloseableObject(AutoCloseable object) {\n        if (object == null) return;\n        try {\n            object.close();\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>0\u3001\u53c2\u7167c3p0\u7684\u57fa\u672c\u4f7f\u7528 \u53c2\u8003\u94fe\u63a5\uff1aJava\u6570\u636e\u5e93\u8fde\u63a5\u6c60c3p0\u7684\u57fa\u672c\u4f7f\u7528 1\u3001\u5bfc\u5165jar\u5305 Github\u5730\u5740\uff1ahttps:\/\/github.com\/alibaba\/druid \u5728Tags\u4e2d\u627e\u5230\u76f8\u5bf9\u5e94\u7684\u7248\u672c\uff0c\u8bf4\u660e\u4e2d\u6709\u4e0b\u8f7d\u8fde\u63a5\uff0c\u4e0b\u8f7djar\u5305\u5bfc\u5165\u5230\u5de5\u7a0b<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[295,297,292,298],"class_list":["post-1674","post","type-post","status-publish","format-standard","hentry","category-java","tag-c3p0","tag-druid","tag-jdbc","tag-298"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1674","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=1674"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1674\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=1674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=1674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=1674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}