{"id":1670,"date":"2020-11-29T17:08:08","date_gmt":"2020-11-29T09:08:08","guid":{"rendered":"https:\/\/www.yusian.com\/blog\/?p=1670"},"modified":"2020-12-01T08:38:10","modified_gmt":"2020-12-01T00:38:10","slug":"java%e6%95%b0%e6%8d%ae%e5%ba%93%e8%bf%9e%e6%8e%a5%e6%b1%a0c3p0%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\/1708081670.html","title":{"rendered":"Java\u6570\u636e\u5e93\u8fde\u63a5\u6c60c3p0\u7684\u57fa\u672c\u4f7f\u7528"},"content":{"rendered":"<h3>1\u3001\u5bfc\u5165jar\u5305<\/h3>\n<ul>\n<li>\u4ece\u7f51\u4e0a\u4e0b\u8f7dc3p0\u7684jar\u5305\u53ca\u5176\u4f9d\u8d56\u5305\n<ul>\n<li><code>c3p0-0.9.5.5.jar<\/code><\/li>\n<li><code>mchange-commons-java-0.2.19.jar<\/code><\/li>\n<\/ul>\n<\/li>\n<li>\u5bfc\u5165\u5230\u5de5\u7a0b\u4e2d<\/li>\n<\/ul>\n<p><!--more--><\/p>\n<h3>2\u3001DataSource\u7684\u57fa\u672c\u4f7f\u7528<\/h3>\n<ul>\n<li><code>DataSource<\/code>\u662fJDK\u5b9a\u4e49\u7684\u63a5\u53e3\u7c7b\uff0cc3p0\u53ea\u662f\u8fd9\u4e2a\u63a5\u53e3\u7c7b\u7684\u4e00\u4e2a\u5b9e\u73b0<\/p>\n<\/li>\n<li>\n<p>c3p0\u7684\u4f7f\u7528\u6709\u4e24\u79cd\u65b9\u5f0f\uff1a<\/p>\n<ul>\n<li>\u901a\u8fc7c3p0\u521b\u5efa\u4e00\u4e2aConnection\u5bf9\u8c61\u540e\u518d\u8bbe\u7f6e\u5c5e\u6027\uff1b<\/li>\n<\/ul>\n<pre><code class=\"language-java line-numbers\">public static void main(String[] args) throws Exception {\n    ComboPooledDataSource source = new ComboPooledDataSource();\n    source.setDriverClass(\"com.mysql.jdbc.Driver\");\n    source.setJdbcUrl(\"jdbc:mysql:\/\/example.domain.com:3306\/db\");\n    source.setUser(\"username\");\n    source.setPassword(\"password\");\n    Connection conn = source.getConnection();\n    System.out.println(conn);\n}\n<\/code><\/pre>\n<ul>\n<li>\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u81ea\u52a8\u52a0\u8f7dConnection\u5bf9\u8c61\u7684\u5c5e\u6027\uff0cc3p0.properties\u6587\u4ef6\u6216c3p0-config.xml\u6587\u4ef6\u90fd\u53ef\u4ee5\uff0c\u4f46\u6587\u4ef6\u540d\u662f\u56fa\u5b9a\u7684<\/li>\n<\/ul>\n<pre><code class=\"language-properties line-numbers\">c3p0.driverClass=com.mysql.jdbc.Driver\nc3p0.jdbcUrl=jdbc:mysql:\/\/node.yusian.net:3306\/db3?useSSL=false\nc3p0.user=root\nc3p0.password=Root@123\nc3p0.initialPoolSize=5\nc3p0.maxPoolSize=10\nc3p0.checkoutTimeout=3000\n<\/code><\/pre>\n<pre data-language=XML><code class=\"language-markup line-numbers\">&lt;c3p0-config&gt;\n    &lt;!--\u9ed8\u8ba4\u914d\u7f6e--&gt;\n    &lt;default-config&gt;\n        &lt;!-- JDBC\u57fa\u672c\u914d\u7f6e --&gt;\n        &lt;property name=\"driverClass\"&gt;com.mysql.jdbc.Driver&lt;\/property&gt;\n        &lt;property name=\"jdbcUrl\"&gt;jdbc:mysql:\/\/node.yusian.net:3306\/db3?useSSL=false&lt;\/property&gt;\n        &lt;property name=\"user\"&gt;root&lt;\/property&gt;\n        &lt;property name=\"password\"&gt;Root@123&lt;\/property&gt;\n\n        &lt;!-- \u8fde\u63a5\u6c60\u7684\u57fa\u672c\u914d\u7f6e  --&gt;\n        &lt;property name=\"initialPoolSize\"&gt;5&lt;\/property&gt;\n        &lt;property name=\"maxPoolSize\"&gt;10&lt;\/property&gt;\n        &lt;property name=\"checkoutTimeout\"&gt;3000&lt;\/property&gt;\n    &lt;\/default-config&gt;\n    &lt;!--  \u547d\u540d\u914d\u7f6e  --&gt;\n    &lt;named-config name=\"other\"&gt;\n        &lt;property name=\"driverClass\"&gt;com.mysql.jdbc.Driver&lt;\/property&gt;\n        &lt;property name=\"jdbcUrl\"&gt;jdbc:mysql:\/\/node.yusian.net:3306\/db3?useSSL=false&lt;\/property&gt;\n        &lt;property name=\"user\"&gt;root&lt;\/property&gt;\n        &lt;property name=\"password\"&gt;Root@123&lt;\/property&gt;\n\n        &lt;property name=\"initialPoolSize\"&gt;5&lt;\/property&gt;\n        &lt;property name=\"maxPoolSize\"&gt;8&lt;\/property&gt;\n        &lt;property name=\"checkoutTimeout\"&gt;1000&lt;\/property&gt;\n    &lt;\/named-config&gt;\n&lt;\/c3p0-config&gt;\n<\/code><\/pre>\n<pre><code class=\"language-java line-numbers\">public static void main(String[] args) throws Exception {\n    DataSource ds = new ComboPooledDataSource();\n    Connection conn = ds.getConnection();\n    System.out.println(conn);\n}\n<\/code><\/pre>\n<\/li>\n<li>\u914d\u7f6e\u6587\u4ef6\u4e2d\u8fde\u63a5\u6c60\u7684\u6700\u5927\u8fde\u63a5\u6570\u662f10\u4e2a\uff0c\u901a\u8fc7for\u5faa\u73af\u6765\u83b7\u53d6\u8fde\u63a5\u5bf9\u8c61\uff0c\u5f53\u5faa\u73af\u7b2c11\u6b21\u65f6\u5373\u4f1a\u62a5\u9519\n<pre><code class=\"language-java line-numbers\">public static void main(String[] args) throws Exception {\n  DataSource ds = new ComboPooledDataSource();\n  for (int i = 0; i &lt; 11; i++) {\n      Connection conn = ds.getConnection();\n      System.out.println(conn);\n  }\n}\n<\/code><\/pre>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u5bfc\u5165jar\u5305 \u4ece\u7f51\u4e0a\u4e0b\u8f7dc3p0\u7684jar\u5305\u53ca\u5176\u4f9d\u8d56\u5305 c3p0-0.9.5.5.jar mchange-commons-java-0.2.19.jar \u5bfc\u5165\u5230\u5de5\u7a0b\u4e2d<\/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":[295,292,296],"class_list":["post-1670","post","type-post","status-publish","format-standard","hentry","category-java","tag-c3p0","tag-jdbc","tag-296"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1670","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=1670"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1670\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=1670"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=1670"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=1670"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}