{"id":150,"date":"2018-01-21T20:15:53","date_gmt":"2018-01-21T14:15:53","guid":{"rendered":"https:\/\/qtvz.com\/?p=150"},"modified":"2018-01-21T20:15:53","modified_gmt":"2018-01-21T14:15:53","slug":"android%e6%95%b0%e6%8d%ae%e5%8a%a0%e5%af%86%e4%b9%8bbase64%e7%bc%96%e7%a0%81%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/qtvz.com\/150.html","title":{"rendered":"Android\u6570\u636e\u52a0\u5bc6\u4e4bBase64\u7f16\u7801\u7b97\u6cd5"},"content":{"rendered":"<!--wp-compress-html--><!--wp-compress-html no compression--><h2>\u4ec0\u4e48<a href=\"https:\/\/qtvz.com\/tag\/base64\" class=\"tag-tooltip\" data-toggle=\"tooltip\" title=\"\u67e5\u770b\u66f4\u591a\u5173\u4e8e Base64 \u7684\u6587\u7ae0\" target=\"_blank\">Base64<\/a>\u7b97\u6cd5\uff1f<\/h2>\n<p><a href=\"https:\/\/qtvz.com\/tag\/base64\" class=\"tag-tooltip\" data-toggle=\"tooltip\" title=\"\u67e5\u770b\u66f4\u591a\u5173\u4e8e Base64 \u7684\u6587\u7ae0\" target=\"_blank\">Base64<\/a>\u662f\u7f51\u7edc\u4e0a\u6700\u5e38\u89c1\u7684\u7528\u4e8e\u4f20\u8f938Bit\u5b57\u8282\u4ee3\u7801\u7684\u7f16\u7801\u65b9\u5f0f\u4e4b\u4e00\uff0cBase64\u5e76\u4e0d\u662f\u5b89\u5168\u9886\u57df\u7684\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5176\u5b9eBase64\u53ea\u80fd\u7b97\u662f\u4e00\u4e2a\u7f16\u7801\u7b97\u6cd5\uff0c\u5bf9\u6570\u636e\u5185\u5bb9\u8fdb\u884c\u7f16\u7801\u6765\u9002\u5408\u4f20\u8f93\u3002\u6807\u51c6Base64\u7f16\u7801\u89e3\u7801\u65e0\u9700\u989d\u5916\u4fe1\u606f\u5373\u5b8c\u5168\u53ef\u9006\uff0c\u5373\u4f7f\u4f60\u81ea\u5df1\u81ea\u5b9a\u4e49\u5b57\u7b26\u96c6\u8bbe\u8ba1\u4e00\u79cd\u7c7bBase64\u7684\u7f16\u7801\u65b9\u5f0f\u7528\u4e8e\u6570\u636e\u52a0\u5bc6\uff0c\u5728\u591a\u6570\u573a\u666f\u4e0b\u4e5f\u8f83\u5bb9\u6613\u7834\u89e3\u3002Base64\u7f16\u7801\u672c\u8d28\u4e0a\u662f\u4e00\u79cd\u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8f6c\u6210\u6587\u672c\u6570\u636e\u7684\u65b9\u6848\u3002\u5bf9\u4e8e\u975e\u4e8c\u8fdb\u5236\u6570\u636e\uff0c\u662f\u5148\u5c06\u5176\u8f6c\u6362\u6210\u4e8c\u8fdb\u5236\u5f62\u5f0f\uff0c\u7136\u540e\u6bcf\u8fde\u7eed6\u6bd4\u7279\uff082\u76846\u6b21\u65b9=64\uff09\u8ba1\u7b97\u5176\u5341\u8fdb\u5236\u503c\uff0c\u6839\u636e\u8be5\u503c\u5728<strong>A--Z,a--z,0--9,+,\/<\/strong>\u00a0\u8fd964\u4e2a\u5b57\u7b26\u4e2d\u627e\u5230\u5bf9\u5e94\u7684\u5b57\u7b26\uff0c\u6700\u7ec8\u5f97\u5230\u4e00\u4e2a\u6587\u672c\u5b57\u7b26\u4e32\u3002\u57fa\u672c\u89c4\u5219\u5982\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul>\n<li>\u6807\u51c6Base64\u53ea\u670964\u4e2a\u5b57\u7b26\uff08\u82f1\u6587\u5927\u5c0f\u5199\u3001\u6570\u5b57\u548c+\u3001\/\uff09\u4ee5\u53ca\u7528\u4f5c\u540e\u7f00\u7b49\u53f7\uff1b<\/li>\n<li>Base64\u662f\u628a3\u4e2a\u5b57\u8282\u53d8\u62104\u4e2a\u53ef\u6253\u5370\u5b57\u7b26\uff0c\u6240\u4ee5Base64\u7f16\u7801\u540e\u7684\u5b57\u7b26\u4e32\u4e00\u5b9a\u80fd\u88ab4\u6574\u9664\uff08\u4e0d\u7b97\u7528\u4f5c\u540e\u7f00\u7684\u7b49\u53f7\uff09\uff1b<\/li>\n<li>\u7b49\u53f7\u4e00\u5b9a\u7528\u4f5c\u540e\u7f00\uff0c\u4e14\u6570\u76ee\u4e00\u5b9a\u662f0\u4e2a\u30011\u4e2a\u62162\u4e2a\u3002\u8fd9\u662f\u56e0\u4e3a\u5982\u679c\u539f\u6587\u957f\u5ea6\u4e0d\u80fd\u88ab3\u6574\u9664\uff0cBase64\u8981\u5728\u540e\u9762\u6dfb\u52a0\\0\u51d1\u9f503n\u4f4d\u3002\u4e3a\u4e86\u6b63\u786e\u8fd8\u539f\uff0c\u6dfb\u52a0\u4e86\u51e0\u4e2a\\0\u5c31\u52a0\u4e0a\u51e0\u4e2a\u7b49\u53f7\u3002\u663e\u7136\u6dfb\u52a0\u7b49\u53f7\u7684\u6570\u76ee\u53ea\u80fd\u662f0\u30011\u62162\uff1b<\/li>\n<li>\u4e25\u683c\u6765\u8bf4Base64\u4e0d\u80fd\u7b97\u662f\u4e00\u79cd\u52a0\u5bc6\uff0c\u53ea\u80fd\u8bf4\u662f\u7f16\u7801\u8f6c\u6362\u3002<\/li>\n<\/ul>\n<p>\u4e0b\u56fe\u4e3aBase64\u7f16\u7801\u8868<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-151\" src=\"https:\/\/qtvz.com\/wp-content\/uploads\/2018\/01\/950883-20160920173129137-568856010.png\" alt=\"\" width=\"751\" height=\"533\" srcset=\"https:\/\/qtvz.com\/wp-content\/uploads\/2018\/01\/950883-20160920173129137-568856010.png 751w, https:\/\/qtvz.com\/wp-content\/uploads\/2018\/01\/950883-20160920173129137-568856010-352x250.png 352w\" sizes=\"(max-width: 751px) 100vw, 751px\" alt=\"Android\u6570\u636e\u52a0\u5bc6\u4e4bBase64\u7f16\u7801\u7b97\u6cd5 Android\u8d44\u6599 \u7b2c1\u5f20\" title=\"Android\u6570\u636e\u52a0\u5bc6\u4e4bBase64\u7f16\u7801\u7b97\u6cd5 Android\u8d44\u6599 \u7b2c1\u5f20-Qtvz\" ><\/p>\n<h2>Base64\u7f16\u7801\u7684\u7528\u5904\uff1f<\/h2>\n<p>\u5728\u8ba1\u7b97\u673a\u4e2d\u4efb\u4f55\u6570\u636e\u90fd\u662f\u6309ascii\u7801\u5b58\u50a8\u7684\uff0c\u800cascii\u7801\u7684128\uff5e255\u4e4b\u95f4\u7684\u503c\u662f\u4e0d\u53ef\u89c1\u5b57\u7b26\u3002\u800c\u5728\u7f51\u7edc\u4e0a\u4ea4\u6362\u6570\u636e\u65f6\uff0c\u6bd4\u5982\u8bf4\u4eceA\u5730\u4f20\u5230B\u5730\uff0c\u5f80\u5f80\u8981\u7ecf\u8fc7\u591a\u4e2a\u8def\u7531\u8bbe\u5907\uff0c\u7531\u4e8e\u4e0d\u540c\u7684\u8bbe\u5907\u5bf9\u5b57\u7b26\u7684\u5904\u7406\u65b9\u5f0f\u6709\u4e00\u4e9b\u4e0d\u540c\uff0c\u8fd9\u6837\u90a3\u4e9b\u4e0d\u53ef\u89c1\u5b57\u7b26\u5c31\u6709\u53ef\u80fd\u88ab\u5904\u7406\u9519\u8bef\uff0c\u8fd9\u662f\u4e0d\u5229\u4e8e\u4f20\u8f93\u7684\u3002\u6240\u4ee5\u5c31\u5148\u628a\u6570\u636e\u5148\u505a\u4e00\u4e2aBase64\u7f16\u7801\uff0c\u7edf\u7edf\u53d8\u6210\u53ef\u89c1\u5b57\u7b26\uff0c\u8fd9\u6837\u51fa\u9519\u7684\u53ef\u80fd\u6027\u5c31\u5927\u964d\u4f4e\u4e86\u3002<\/p>\n<h2>Base64\u5177\u4f53\u5b9e\u73b0<\/h2>\n<h3>1.\uff09\u5b57\u7b26\u4e32\u8fdb\u884cBase64\u7f16\u7801<\/h3>\n<pre class=\"lang:default mark:https:\/\/qtvz.com\/wp-admin\/post-new.php# decode:true \"> String encodedString = Base64.encodeToString(\"whoislcj\".getBytes(), Base64.DEFAULT);\r\n Log.e(\"Base64\", \"Base64----&gt;\" + encodedString);<\/pre>\n<h3>2.\uff09\u5b57\u7b26\u4e32\u8fdb\u884cBase64\u89e3\u7801<\/h3>\n<pre class=\"lang:default decode:true \"> String decodedString =new String(Base64.decode(encodedString,Base64.DEFAULT));\r\n Log.e(\"Base64\", \"Base64----&gt;\" + decodedString);<\/pre>\n<h3>\u00a03.\uff09\u5bf9\u6587\u4ef6\u8fdb\u884cBase64\u7f16\u7801<\/h3>\n<pre class=\"lang:default decode:true\">File file = new File(\"\/storage\/emulated\/0\/pimsecure_debug.txt\");\r\nFileInputStream inputFile = null;\r\ntry {\r\n    inputFile = new FileInputStream(file);\r\n    byte[] buffer = new byte[(int) file.length()];\r\n    inputFile.read(buffer);\r\n    inputFile.close();\r\n    encodedString = Base64.encodeToString(buffer, Base64.DEFAULT);\r\n    Log.e(\"Base64\", \"Base64----&gt;\" + encodedString);\r\n} catch (Exception e) {\r\n    e.printStackTrace();\r\n}<\/pre>\n<h3>4.\uff09\u5bf9\u6587\u4ef6\u8fdb\u884cBase64\u89e3\u7801<\/h3>\n<pre class=\"lang:default decode:true\">File desFile = new File(\"\/storage\/emulated\/0\/pimsecure_debug_1.txt\");\r\nFileOutputStream  fos = null;\r\ntry {\r\n    byte[] decodeBytes = Base64.decode(encodedString.getBytes(), Base64.DEFAULT);\r\n    fos = new FileOutputStream(desFile);\r\n    fos.write(decodeBytes);\r\n    fos.close();\r\n} catch (Exception e) {\r\n    e.printStackTrace();\r\n}<\/pre>\n<h3>5.\uff09\u9488\u5bf9Base64.DEFAULT\u53c2\u6570\u8bf4\u660e<\/h3>\n<p>\u65e0\u8bba\u662f\u7f16\u7801\u8fd8\u662f\u89e3\u7801\u90fd\u4f1a\u6709\u4e00\u4e2a\u53c2\u6570Flags\uff0cAndroid\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u51e0\u79cd<\/p>\n<ul>\n<li>DEFAULT \u8fd9\u4e2a\u53c2\u6570\u662f\u9ed8\u8ba4\uff0c\u4f7f\u7528\u9ed8\u8ba4\u7684\u65b9\u6cd5\u6765\u52a0\u5bc6<\/li>\n<li>NO_PADDING \u8fd9\u4e2a\u53c2\u6570\u662f\u7565\u53bb\u52a0\u5bc6\u5b57\u7b26\u4e32\u6700\u540e\u7684\u201d=\u201d<\/li>\n<li>NO_WRAP \u8fd9\u4e2a\u53c2\u6570\u610f\u601d\u662f\u7565\u53bb\u6240\u6709\u7684\u6362\u884c\u7b26\uff08\u8bbe\u7f6e\u540eCRLF\u5c31\u6ca1\u7528\u4e86\uff09<\/li>\n<li>CRLF \u8fd9\u4e2a\u53c2\u6570\u770b\u8d77\u6765\u6bd4\u8f83\u773c\u719f\uff0c\u5b83\u5c31\u662fWin\u98ce\u683c\u7684\u6362\u884c\u7b26\uff0c\u610f\u601d\u5c31\u662f\u4f7f\u7528CR LF\u8fd9\u4e00\u5bf9\u4f5c\u4e3a\u4e00\u884c\u7684\u7ed3\u5c3e\u800c\u4e0d\u662fUnix\u98ce\u683c\u7684LF<\/li>\n<li>URL_SAFE 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Base64\u662f\u7f51\u7edc\u4e0a\u6700\u5e38\u89c1\u7684\u7528\u4e8e\u4f20\u8f938Bit\u5b57\u8282\u4ee3\u7801\u7684\u7f16\u7801\u65b9\u5f0f\u4e4b\u4e00\uff0cBase64\u5e76\u4e0d\u662f\u5b89\u5168\u9886\u57df\u7684\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5176\u5b9eBase64\u53ea\u80fd\u7b97\u662f\u4e00\u4e2a\u7f16\u7801\u7b97\u6cd5\uff0c\u5bf9\u6570\u636e\u5185\u5bb9\u8fdb\u884c\u7f16\u7801\u6765\u9002\u5408\u4f20\u8f93\u3002\u6807 \u00b7\u00b7\u00b7","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[42,4],"tags":[51],"views":22988,"_links":{"self":[{"href":"https:\/\/qtvz.com\/api\/wp\/v2\/posts\/150"}],"collection":[{"href":"https:\/\/qtvz.com\/api\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qtvz.com\/api\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/comments?post=150"}],"version-history":[{"count":1,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/posts\/150\/revisions"}],"predecessor-version":[{"id":152,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/posts\/150\/revisions\/152"}],"wp:attachment":[{"href":"https:\/\/qtvz.com\/api\/wp\/v2\/media?parent=150"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/categories?post=150"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qtvz.com\/api\/wp\/v2\/tags?post=150"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}