{"id":14962,"date":"2023-12-04T16:45:16","date_gmt":"2023-12-04T08:45:16","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=14962"},"modified":"2023-12-14T15:20:15","modified_gmt":"2023-12-14T07:20:15","slug":"dubbospi-he-java-spi-qu-bie-2","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/dubbospi-he-java-spi-qu-bie-2\/","title":{"rendered":"DubboSPI \u548c Java SPI \u533a\u522b\uff1f"},"content":{"rendered":"<p>Dubbo\u7684SPI\uff08Service Provider Interface\uff09\u673a\u5236\u548cJava\u539f\u751f\u7684SPI\u673a\u5236\u6709\u4e00\u4e9b\u76f8\u4f3c\u4e4b\u5904\uff0c\u4f46\u4e5f\u5b58\u5728\u4e00\u4e9b\u533a\u522b\u3002\u4ee5\u4e0b\u662fDubboSPI\u548cJava SPI\u7684\u4e3b\u8981\u533a\u522b\uff1a<\/p>\n<h3><a id=\"1%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6%E7%9A%84%E4%BD%8D%E7%BD%AE%E5%92%8C%E6%A0%BC%E5%BC%8F%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>1. \u914d\u7f6e\u6587\u4ef6\u7684\u4f4d\u7f6e\u548c\u683c\u5f0f\uff1a<\/h3>\n<ul>\n<li>\n<strong>Dubbo SPI\uff1a<\/strong><\/p>\n<ul>\n<li>\nDubbo\u7684SPI\u673a\u5236\u901a\u8fc7\u5728<code>META-INF\/dubbo<\/code>\u76ee\u5f55\u4e0b\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u6307\u5b9a\u5b9e\u73b0\u7c7b\u6765\u5b9e\u73b0\u6269\u5c55\u70b9\u7684\u52a0\u8f7d\u3002\u914d\u7f6e\u6587\u4ef6\u7684\u683c\u5f0f\u662f<code>key=value<\/code>\u7684\u952e\u503c\u5bf9\uff0c\u5176\u4e2dkey\u8868\u793a\u6269\u5c55\u70b9\u7684\u540d\u79f0\uff0cvalue\u8868\u793a\u5177\u4f53\u5b9e\u73b0\u7c7b\u7684\u5168\u9650\u5b9a\u540d\u3002<\/p>\n<pre><code class=\"language-plain_text\">META-INF\/dubbo\/com.example.SomeExtension\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>Java SPI\uff1a<\/strong><\/p>\n<ul>\n<li>\nJava\u7684SPI\u673a\u5236\u901a\u8fc7\u5728<code>META-INF\/services<\/code>\u76ee\u5f55\u4e0b\u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\u6307\u5b9a\u5b9e\u73b0\u7c7b\u6765\u5b9e\u73b0\u6269\u5c55\u70b9\u7684\u52a0\u8f7d\u3002\u914d\u7f6e\u6587\u4ef6\u7684\u683c\u5f0f\u662f\u5b9e\u73b0\u7c7b\u7684\u5168\u9650\u5b9a\u540d\u3002<\/p>\n<pre><code class=\"language-plain_text\">META-INF\/services\/com.example.SomeExtension\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><a id=\"2%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6%E5%86%85%E5%AE%B9%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>2. \u914d\u7f6e\u6587\u4ef6\u5185\u5bb9\uff1a<\/h3>\n<ul>\n<li>\n<strong>Dubbo SPI\uff1a<\/strong><\/p>\n<ul>\n<li>\nDubbo\u7684SPI\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u6bcf\u4e2a\u6269\u5c55\u70b9\u7684\u914d\u7f6e\u6587\u4ef6\u53ef\u4ee5\u5305\u542b\u591a\u4e2a\u5b9e\u73b0\u7c7b\uff0c\u5e76\u901a\u8fc7<code>key=value<\/code>\u7684\u5f62\u5f0f\u6307\u5b9a\u5b9e\u73b0\u7c7b\u3002<\/p>\n<pre><code class=\"language-plain_text\">key1=com.example.impl1\nkey2=com.example.impl2\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>Java SPI\uff1a<\/strong><\/p>\n<ul>\n<li>\nJava\u7684SPI\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u6bcf\u4e2a\u6269\u5c55\u70b9\u7684\u914d\u7f6e\u6587\u4ef6\u53ea\u80fd\u5305\u542b\u4e00\u4e2a\u5b9e\u73b0\u7c7b\u7684\u5168\u9650\u5b9a\u540d\u3002<\/p>\n<pre><code class=\"language-plain_text\">com.example.impl1\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><a id=\"3%E8%8E%B7%E5%8F%96%E6%89%A9%E5%B1%95%E7%82%B9%E7%9A%84%E6%96%B9%E5%BC%8F%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>3. \u83b7\u53d6\u6269\u5c55\u70b9\u7684\u65b9\u5f0f\uff1a<\/h3>\n<ul>\n<li>\n<strong>Dubbo SPI\uff1a<\/strong><\/p>\n<ul>\n<li>\nDubbo\u901a\u8fc7<code>ExtensionLoader<\/code>\u7c7b\u6765\u52a0\u8f7d\u548c\u83b7\u53d6\u6269\u5c55\u70b9\u5b9e\u73b0\u7c7b\u3002\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u6269\u5c55\u70b9\u7684\u63a5\u53e3\u548c\u6269\u5c55\u70b9\u7684\u540d\u79f0\u83b7\u53d6\u5bf9\u5e94\u7684\u5b9e\u73b0\u7c7b\u3002<\/p>\n<pre><code class=\"language-java\">ExtensionLoader&lt;SomeExtension&gt; loader = ExtensionLoader.getExtensionLoader(SomeExtension.class);\nSomeExtension extension = loader.getExtension(&quot;key1&quot;);\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>Java SPI\uff1a<\/strong><\/p>\n<ul>\n<li>\nJava SPI\u901a\u8fc7<code>ServiceLoader<\/code>\u7c7b\u6765\u52a0\u8f7d\u548c\u83b7\u53d6\u6269\u5c55\u70b9\u5b9e\u73b0\u7c7b\u3002\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u6269\u5c55\u70b9\u7684\u63a5\u53e3\u83b7\u53d6\u5bf9\u5e94\u7684\u5b9e\u73b0\u7c7b\u3002<\/p>\n<pre><code class=\"language-java\">ServiceLoader&lt;SomeExtension&gt; loader = ServiceLoader.load(SomeExtension.class);\nSomeExtension extension = loader.iterator().next();\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><a id=\"4%E6%89%A9%E5%B1%95%E7%82%B9%E7%9A%84%E9%85%8D%E7%BD%AE%E7%81%B5%E6%B4%BB%E6%80%A7%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>4. \u6269\u5c55\u70b9\u7684\u914d\u7f6e\u7075\u6d3b\u6027\uff1a<\/h3>\n<ul>\n<li>\n<strong>Dubbo SPI\uff1a<\/strong><\/p>\n<ul>\n<li>Dubbo SPI\u5bf9\u4e8e\u540c\u4e00\u4e2a\u6269\u5c55\u70b9\uff0c\u53ef\u4ee5\u5728\u591a\u4e2a\u914d\u7f6e\u6587\u4ef6\u4e2d\u914d\u7f6e\u4e0d\u540c\u7684\u5b9e\u73b0\u7c7b\uff0c\u5e76\u901a\u8fc7<code>@Activate<\/code>\u6ce8\u89e3\u6307\u5b9a\u9ed8\u8ba4\u7684\u5b9e\u73b0\u7c7b\u548c\u6fc0\u6d3b\u6761\u4ef6\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<strong>Java SPI\uff1a<\/strong><\/p>\n<ul>\n<li>Java SPI\u5bf9\u4e8e\u540c\u4e00\u4e2a\u6269\u5c55\u70b9\uff0c\u53ea\u80fd\u6709\u4e00\u4e2a\u5b9e\u73b0\u7c7b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u603b\u4f53\u800c\u8a00\uff0cDubbo\u7684SPI\u673a\u5236\u76f8\u5bf9\u4e8eJava\u539f\u751f\u7684SPI\u673a\u5236\u66f4\u52a0\u7075\u6d3b\u548c\u529f\u80fd\u4e30\u5bcc\u3002Dubbo\u7684SPI\u652f\u6301\u591a\u914d\u7f6e\u6587\u4ef6\u3001\u591a\u5b9e\u73b0\u7c7b\u3001\u6fc0\u6d3b\u6761\u4ef6\u7b49\u7279\u6027\uff0c\u4f7f\u5f97\u6269\u5c55\u70b9\u7684\u914d\u7f6e\u548c\u4f7f\u7528\u66f4\u52a0\u7075\u6d3b\u53ef\u63a7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dubbo\u7684SPI\uff08Service Provider Interface\uff09\u673a\u5236\u548cJava\u539f\u751f\u7684SPI\u673a\u5236\u6709\u4e00\u4e9b [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[123],"tags":[],"class_list":["post-14962","post","type-post","status-publish","format-standard","hentry","category-dubbo"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14962","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=14962"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14962\/revisions"}],"predecessor-version":[{"id":48173,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/14962\/revisions\/48173"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=14962"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=14962"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=14962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}