{"id":554,"date":"2023-09-16T17:38:01","date_gmt":"2023-09-16T09:38:01","guid":{"rendered":""},"modified":"2023-09-17T00:41:32","modified_gmt":"2023-09-16T16:41:32","slug":"js-%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%bd%ac%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84%ef%bc%8c%e5%ad%97%e8%8a%82%e6%95%b0%e7%bb%84%e8%bd%ac%e5%ad%97%e7%ac%a6%e4%b8%b2%ef%bc%88%e4%ba%92%e8%bd%ac%ef%bc%89","status":"publish","type":"post","link":"https:\/\/mushiming.com\/554.html","title":{"rendered":"js \u5b57\u7b26\u4e32\u8f6c\u5b57\u8282\u6570\u7ec4\uff0c\u5b57\u8282\u6570\u7ec4\u8f6c\u5b57\u7b26\u4e32\uff08\u4e92\u8f6c\uff09"},"content":{"rendered":"<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"display: none;\"> \n <path stroke-linecap=\"round\" d=\"M5,0 0,2.5 5,5z\" id=\"raphael-marker-block\" style=\"-webkit-tap-highlight-color: rgba(0, 0, 0, 0);\"><\/path> \n<\/svg> <\/p>\n<h2>\u7c7b\u4f3cjs \u4e0eJava getBytes\u4e0e\u66ff\u6362\u65b9\u6cd5<\/h2>\n<p>\u8fd9\u91cc\u662fJava<\/p>\n<pre class=\"language-java prettyprint linenums\"><code class=\"prism language-java\">secretKey<span class=\"token punctuation\">.<\/span><span class=\"token function\">getBytes<\/span><span class=\"token punctuation\">(<\/span>CHARSET_UTF8<span class=\"token punctuation\">)<\/span>\n<\/code><\/pre>\n<pre><code class=\"prism language-javascript\"> <span class=\"token comment\">\/\/ \u5b57\u7b26\u4e32\u8f6c\u6570\u7ec4<\/span>\n    <span class=\"token keyword\">function<\/span> <span class=\"token function\">stringToByte<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">str<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token keyword\">var<\/span> len<span class=\"token punctuation\">,<\/span> c<span class=\"token punctuation\">;<\/span>\n        len <span class=\"token operator\">=<\/span> str<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">var<\/span> bytes <span class=\"token operator\">=<\/span> <span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> len<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n            c <span class=\"token operator\">=<\/span> str<span class=\"token punctuation\">.<\/span><span class=\"token function\">charCodeAt<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&gt;=<\/span> <span class=\"token number\">0x010000<\/span> <span class=\"token operator\">&amp;&amp;<\/span> c <span class=\"token operator\">&lt;=<\/span> <span class=\"token number\">0x10FFFF<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x07<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> <span class=\"token number\">0xF0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token number\">12<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x3F<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> <span class=\"token number\">0x80<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x3F<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> <span class=\"token number\">0x80<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x3F<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> <span class=\"token number\">0x80<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&gt;=<\/span> <span class=\"token number\">0x000800<\/span> <span class=\"token operator\">&amp;&amp;<\/span> c <span class=\"token operator\">&lt;=<\/span> <span class=\"token number\">0x00FFFF<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token number\">12<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x0F<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> <span class=\"token number\">0xE0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x3F<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> <span class=\"token number\">0x80<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x3F<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> <span class=\"token number\">0x80<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&gt;=<\/span> <span class=\"token number\">0x000080<\/span> <span class=\"token operator\">&amp;&amp;<\/span> c <span class=\"token operator\">&lt;=<\/span> <span class=\"token number\">0x0007FF<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&gt;&gt;<\/span> <span class=\"token number\">6<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x1F<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> <span class=\"token number\">0xC0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0x3F<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> <span class=\"token number\">0x80<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n                bytes<span class=\"token punctuation\">.<\/span><span class=\"token function\">push<\/span><span class=\"token punctuation\">(<\/span>c <span class=\"token operator\">&amp;<\/span> <span class=\"token number\">0xFF<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n            <span class=\"token punctuation\">}<\/span>\n        <span class=\"token punctuation\">}<\/span>\n        <span class=\"token keyword\">return<\/span> bytes<span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n<span class=\"token comment\">\/\/ \u5b57\u7b26\u6570\u7ec4\u8f6c\u5b57\u7b26\u4e32<\/span>\n    <span class=\"token keyword\">function<\/span> <span class=\"token function\">Uint8ArrayToString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token parameter\">fileData<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token keyword\">var<\/span> dataString <span class=\"token operator\">=<\/span> <span class=\"token string\">\"\"<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">var<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> fileData<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n          dataString <span class=\"token operator\">+=<\/span> String<span class=\"token punctuation\">.<\/span><span class=\"token function\">fromCharCode<\/span><span class=\"token punctuation\">(<\/span>fileData<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n        <span class=\"token punctuation\">}<\/span>\n       \n        <span class=\"token keyword\">return<\/span> dataString\n      \n      <span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"js 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