{"id":781,"date":"2013-09-23T10:02:17","date_gmt":"2013-09-23T10:02:17","guid":{"rendered":"http:\/\/blog.zhukunqian.com\/?p=781"},"modified":"2013-09-23T11:29:43","modified_gmt":"2013-09-23T11:29:43","slug":"decoder%e8%a7%a3%e7%a0%81%e4%bc%98%e5%8c%96","status":"publish","type":"post","link":"https:\/\/blog.zhukunqian.com\/?p=781","title":{"rendered":"decoder\u89e3\u7801\u4f18\u5316"},"content":{"rendered":"<p>decoder\u4e2d\u9700\u8981\u4f7f\u7528byte[]\u63a5\u6536\u6570\u636e\u5e76\u8f6c\u4e3aprotobuf\u5bf9\u8c61\u3002<\/p>\n<p>\u672c\u6765\u8003\u8651\u7684\u662f\u4f7f\u7528netty\u81ea\u5e26\u7684\u7f13\u5b58\u529f\u80fd\u6216\u76f4\u63a5\u5728\u6bcf\u4e2adecoder\u4e2d\u5206\u914d\u4e00\u4e2abyte[]\u3002\u8fd9\u65f6\u60f3\u8d77\u6765\u4e86fastjson\u7684\u4f5c\u8005\u63d0\u8fc7\u4f7f\u7528\u7684\u7ebf\u7a0b\u7ed1\u5b9a\u7684byte[]\u529f\u80fd\u3002<\/p>\n<p>\u67e5\u627e\u5230\u6e90\u4ee3\u7801\uff0c\u6458\u51fa\u6765\u7528\u3002\u4e5f\u611f\u8c22fastjson\u7684\u4f5c\u8005\u5f00\u6e90\u4ee3\u7801\u3002<\/p>\n<pre class=\"brush: java; gutter: true\">package cn.joylab.game.util;\r\n\r\nimport java.lang.ref.SoftReference;\r\n\r\n\/**\r\n * \u63d0\u4f9b\u7ebf\u7a0b\u7ed1\u5b9a\u6570\u7ec4\u7f13\u5b58\u529f\u80fd\u3002\r\n * \r\n * \u53ef\u4ee5\u907f\u514d\u9891\u7e41\u521b\u5efabyte\u6570\u7ec4\uff0c\u6700\u5927\u957f\u5ea6\u9650\u5236\u4e3a128k\uff0c\u8d85\u8fc7128k\u7684\u6570\u636e\u4e0d\u8fdb\u884c\u7f13\u5b58\u3002\r\n * \r\n * \u7528\u4f8b1\uff1adecoder.\r\n * \r\n * @author ZhuKunqian\r\n * \r\n *\/\r\npublic class ThreadLocalCache {\r\n\tprivate final static int BYTE_CACHE_INIT_SIZE = 1024;\r\n\tprivate final static int BYTE_CACHE_MAX_SIZE = 1024 * 128;\r\n\tprivate static final ThreadLocal&lt;SoftReference&lt;byte[]&gt;&gt; byteBufLocal = new ThreadLocal&lt;SoftReference&lt;byte[]&gt;&gt;();\r\n\r\n\tpublic static void clearCache() {\r\n\t\tbyteBufLocal.set(null);\r\n\t}\r\n\r\n\tpublic static byte[] getBytes(int length) {\r\n\t\tSoftReference&lt;byte[]&gt; ref = byteBufLocal.get();\r\n\t\tif (ref == null) {\r\n\t\t\treturn allocateBytes(length);\r\n\t\t}\r\n\r\n\t\tbyte[] bytes = ref.get();\r\n\t\tif (bytes == null) {\r\n\t\t\treturn allocateBytes(length);\r\n\t\t}\r\n\t\tif (bytes.length &lt; length) {\r\n\t\t\tbytes = allocateBytes(length);\r\n\t\t}\r\n\t\treturn bytes;\r\n\t}\r\n\r\n\tprivate static int getAllocateLength(int init, int max, int length) {\r\n\t\tint value = init;\r\n\t\twhile (true) {\r\n\t\t\tif (value &gt;= length) {\r\n\t\t\t\treturn value;\r\n\t\t\t}\r\n\t\t\tvalue *= 2;\r\n\t\t\tif (value &gt; max) {\r\n\t\t\t\tbreak;\r\n\t\t\t}\r\n\t\t}\r\n\t\treturn length;\r\n\t}\r\n\r\n\tprivate static byte[] allocateBytes(int length) {\r\n\t\tint allocateLength = getAllocateLength(BYTE_CACHE_INIT_SIZE,\r\n\t\t\t\tBYTE_CACHE_MAX_SIZE, length);\r\n\t\tif (allocateLength &lt;= BYTE_CACHE_MAX_SIZE) {\r\n\t\t\tbyte[] bytes = new byte[allocateLength];\r\n\t\t\tbyteBufLocal.set(new SoftReference&lt;byte[]&gt;(bytes));\r\n\t\t\treturn bytes;\r\n\t\t}\r\n\t\treturn new byte[length];\r\n\t}\r\n}\r\n\r\n<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>decoder\u4e2d\u9700\u8981\u4f7f\u7528byte[]\u63a5\u6536\u6570\u636e\u5e76\u8f6c\u4e3aprotobuf\u5bf9\u8c61\u3002 \u672c\u6765\u8003 &hellip;<\/p>\n<p class=\"read-more\"><a href=\"https:\/\/blog.zhukunqian.com\/?p=781\">\u7ee7\u7eed\u9605\u8bfb &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/posts\/781"}],"collection":[{"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=781"}],"version-history":[{"count":3,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/posts\/781\/revisions"}],"predecessor-version":[{"id":783,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=\/wp\/v2\/posts\/781\/revisions\/783"}],"wp:attachment":[{"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.zhukunqian.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}