Initial commit

.gitignore

+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+#Mac
+.DS_Store
+server/.DS_Store
+server/static/dist
+web/.DS_Store
+web/dist
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+server/node_modules/
+web/node_modules/
+server/upload_store/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+.eslintrc.json
+
+# vscode configuration
+jsconfig.json
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env

package-lock.json

+{
+  "name": "duiba-minipgm",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "a-sync-waterfall": {
+      "version": "1.0.0",
+      "resolved": "http://registry.npm.taobao.org/a-sync-waterfall/download/a-sync-waterfall-1.0.0.tgz",
+      "integrity": "sha1-OOgxnXk3niRiiEW1O5ZyKyng5Hw="
+    },
+    "accepts": {
+      "version": "1.3.4",
+      "resolved": "http://registry.npm.taobao.org/accepts/download/accepts-1.3.4.tgz",
+      "integrity": "sha1-hiRnWMfdbSGmR0/whKR0DsBesh8=",
+      "requires": {
+        "mime-types": "2.1.17",
+        "negotiator": "0.6.1"
+      }
+    },
+    "ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "http://registry.npm.taobao.org/ansi-regex/download/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
+    },
+    "any-promise": {
+      "version": "1.3.0",
+      "resolved": "http://registry.npm.taobao.org/any-promise/download/any-promise-1.3.0.tgz",
+      "integrity": "sha1-q8av7tzqUugJzcA3au0845Y10X8="
+    },
+    "anymatch": {
+      "version": "1.3.2",
+      "resolved": "http://registry.npm.taobao.org/anymatch/download/anymatch-1.3.2.tgz",
+      "integrity": "sha1-VT3Lj5HjyImEXf26NMd3IbkLnXo=",
+      "optional": true,
+      "requires": {
+        "micromatch": "2.3.11",
+        "normalize-path": "2.1.1"
+      }
+    },
+    "arr-diff": {
+      "version": "2.0.0",
+      "resolved": "http://registry.npm.taobao.org/arr-diff/download/arr-diff-2.0.0.tgz",
+      "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
+      "optional": true,
+      "requires": {
+        "arr-flatten": "1.1.0"
+      }
+    },
+    "arr-flatten": {
+      "version": "1.1.0",
+      "resolved": "http://registry.npm.taobao.org/arr-flatten/download/arr-flatten-1.1.0.tgz",
+      "integrity": "sha1-NgSLv/TntH4TZkQxbJlmnqWukfE=",
+      "optional": true
+    },
+    "array-unique": {
+      "version": "0.2.1",
+      "resolved": "http://registry.npm.taobao.org/array-unique/download/array-unique-0.2.1.tgz",
+      "integrity": "sha1-odl8yvy8JiXMcPrc6zalDFiwGlM=",
+      "optional": true
+    },
+    "asap": {
+      "version": "2.0.6",
+      "resolved": "http://registry.npm.taobao.org/asap/download/asap-2.0.6.tgz",
+      "integrity": "sha1-5QNHYR1+aQlDIIu9r+vLwvuGbUY="
+    },
+    "async-each": {
+      "version": "1.0.1",
+      "resolved": "http://registry.npm.taobao.org/async-each/download/async-each-1.0.1.tgz",
+      "integrity": "sha1-GdOGodntxufByF04iu28xW0zYC0=",
+      "optional": true
+    },
+    "balanced-match": {
+      "version": "1.0.0",
+      "resolved": "http://registry.npm.taobao.org/balanced-match/download/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "optional": true
+    },
+    "binary-extensions": {
+      "version": "1.11.0",
+      "resolved": "http://registry.npm.taobao.org/binary-extensions/download/binary-extensions-1.11.0.tgz",
+      "integrity": "sha1-RqoXUftqL5PuXmibsQh9SxTGwgU=",
+      "optional": true
+    },
+    "brace-expansion": {
+      "version": "1.1.8",
+      "resolved": "http://registry.npm.taobao.org/brace-expansion/download/brace-expansion-1.1.8.tgz",
+      "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
+      "optional": true,
+      "requires": {
+        "balanced-match": "1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "braces": {
+      "version": "1.8.5",
+      "resolved": "http://registry.npm.taobao.org/braces/download/braces-1.8.5.tgz",
+      "integrity": "sha1-uneWLhLf+WnWt2cR6RS3N4V79qc=",
+      "optional": true,
+      "requires": {
+        "expand-range": "1.8.2",
+        "preserve": "0.2.0",
+        "repeat-element": "1.1.2"
+      }
+    },
+    "bytes": {
+      "version": "3.0.0",
+      "resolved": "http://registry.npm.taobao.org/bytes/download/bytes-3.0.0.tgz",
+      "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
+    },
+    "camelcase": {
+      "version": "2.1.1",
+      "resolved": "http://registry.npm.taobao.org/camelcase/download/camelcase-2.1.1.tgz",
+      "integrity": "sha1-fB0W1nmhu+WcoCys7PsBHiAfWh8="
+    },
+    "chokidar": {
+      "version": "1.7.0",
+      "resolved": "http://registry.npm.taobao.org/chokidar/download/chokidar-1.7.0.tgz",
+      "integrity": "sha1-eY5ol3gVHIB2tLNg5e3SjNortGg=",
+      "optional": true,
+      "requires": {
+        "anymatch": "1.3.2",
+        "async-each": "1.0.1",
+        "fsevents": "1.1.3",
+        "glob-parent": "2.0.0",
+        "inherits": "2.0.3",
+        "is-binary-path": "1.0.1",
+        "is-glob": "2.0.1",
+        "path-is-absolute": "1.0.1",
+        "readdirp": "2.1.0"
+      }
+    },
+    "cliui": {
+      "version": "3.2.0",
+      "resolved": "http://registry.npm.taobao.org/cliui/download/cliui-3.2.0.tgz",
+      "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
+      "requires": {
+        "string-width": "1.0.2",
+        "strip-ansi": "3.0.1",
+        "wrap-ansi": "2.1.0"
+      }
+    },
+    "co": {
+      "version": "4.6.0",
+      "resolved": "http://registry.npm.taobao.org/co/download/co-4.6.0.tgz",
+      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
+    },
+    "co-body": {
+      "version": "5.1.1",
+      "resolved": "http://registry.npm.taobao.org/co-body/download/co-body-5.1.1.tgz",
+      "integrity": "sha1-2XeB0eM0S6SoIP0YBr3fg0FQUjY=",
+      "requires": {
+        "inflation": "2.0.0",
+        "qs": "6.5.1",
+        "raw-body": "2.3.2",
+        "type-is": "1.6.15"
+      }
+    },
+    "code-point-at": {
+      "version": "1.1.0",
+      "resolved": "http://registry.npm.taobao.org/code-point-at/download/code-point-at-1.1.0.tgz",
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
+    },
+    "concat-map": {
+      "version": "0.0.1",
+      "resolved": "http://registry.npm.taobao.org/concat-map/download/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
+      "optional": true
+    },
+    "content-disposition": {
+      "version": "0.5.2",
+      "resolved": "http://registry.npm.taobao.org/content-disposition/download/content-disposition-0.5.2.tgz",
+      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
+    },
+    "content-type": {
+      "version": "1.0.4",
+      "resolved": "http://registry.npm.taobao.org/content-type/download/content-type-1.0.4.tgz",
+      "integrity": "sha1-4TjMdeBAxyexlm/l5fjJruJW/js="
+    },
+    "cookies": {
+      "version": "0.7.1",
+      "resolved": "http://registry.npm.taobao.org/cookies/download/cookies-0.7.1.tgz",
+      "integrity": "sha1-fIphX1SBxhq58WyDNzG8uPZjuZs=",
+      "requires": {
+        "depd": "1.1.2",
+        "keygrip": "1.0.2"
+      }
+    },
+    "copy-to": {
+      "version": "2.0.1",
+      "resolved": "http://registry.npm.taobao.org/copy-to/download/copy-to-2.0.1.tgz",
+      "integrity": "sha1-JoD7uAaKSNCGVrYJgJK9r8kG9KU="
+    },
+    "core-util-is": {
+      "version": "1.0.2",
+      "resolved": "http://registry.npm.taobao.org/core-util-is/download/core-util-is-1.0.2.tgz",
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
+      "optional": true
+    },
+    "debug": {
+      "version": "3.1.0",
+      "resolved": "http://registry.npm.taobao.org/debug/download/debug-3.1.0.tgz",
+      "integrity": "sha1-W7WgZyYotkFJVmuhaBnmFRjGcmE=",
+      "requires": {
+        "ms": "2.0.0"
+      }
+    },
+    "decamelize": {
+      "version": "1.2.0",
+      "resolved": "http://registry.npm.taobao.org/decamelize/download/decamelize-1.2.0.tgz",
+      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA="
+    },
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+      "resolved": "http://registry.npm.taobao.org/deep-equal/download/deep-equal-1.0.1.tgz",
+      "integrity": "sha1-9dJgKStmDghO/0zbyfCK0yR0SLU="
+    },
+    "delegates": {
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+      "resolved": "http://registry.npm.taobao.org/delegates/download/delegates-1.0.0.tgz",
+      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
+    },
+    "depd": {
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+      "resolved": "http://registry.npm.taobao.org/depd/download/depd-1.1.2.tgz",
+      "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak="
+    },
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+      "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
+    },
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+      "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
+    },
+    "error-inject": {
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+      "resolved": "http://registry.npm.taobao.org/error-inject/download/error-inject-1.0.0.tgz",
+      "integrity": "sha1-4rPZG1Su1nLzCdlQ0VSFD6EdTzc="
+    },
+    "escape-html": {
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+      "resolved": "http://registry.npm.taobao.org/escape-html/download/escape-html-1.0.3.tgz",
+      "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
+    },
+    "expand-brackets": {
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+      "resolved": "http://registry.npm.taobao.org/expand-brackets/download/expand-brackets-0.1.5.tgz",
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+      "requires": {
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+      }
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+    "extglob": {
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+      "resolved": "http://registry.npm.taobao.org/extglob/download/extglob-0.3.2.tgz",
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+      "resolved": "http://registry.npm.taobao.org/setprototypeof/download/setprototypeof-1.0.3.tgz",
+      "integrity": "sha1-ZlZ+NwQ+608E2RvWWMDL77VbjgQ="
+    },
+    "statuses": {
+      "version": "1.4.0",
+      "resolved": "http://registry.npm.taobao.org/statuses/download/statuses-1.4.0.tgz",
+      "integrity": "sha1-u3PURtonlhBu/MG2AaJT1sRr0Ic="
+    },
+    "string-width": {
+      "version": "1.0.2",
+      "resolved": "http://registry.npm.taobao.org/string-width/download/string-width-1.0.2.tgz",
+      "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+      "requires": {
+        "code-point-at": "1.1.0",
+        "is-fullwidth-code-point": "1.0.0",
+        "strip-ansi": "3.0.1"
+      }
+    },
+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "http://registry.npm.taobao.org/string_decoder/download/string_decoder-1.0.3.tgz",
+      "integrity": "sha1-D8Z9fBQYJd6UKC3VNr7GubzoYKs=",
+      "optional": true,
+      "requires": {
+        "safe-buffer": "5.1.1"
+      }
+    },
+    "strip-ansi": {
+      "version": "3.0.1",
+      "resolved": "http://registry.npm.taobao.org/strip-ansi/download/strip-ansi-3.0.1.tgz",
+      "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+      "requires": {
+        "ansi-regex": "2.1.1"
+      }
+    },
+    "thenify": {
+      "version": "3.3.0",
+      "resolved": "http://registry.npm.taobao.org/thenify/download/thenify-3.3.0.tgz",
+      "integrity": "sha1-5p44obq+lpsBCCB5eLn2K4hgSDk=",
+      "requires": {
+        "any-promise": "1.3.0"
+      }
+    },
+    "thenify-all": {
+      "version": "1.6.0",
+      "resolved": "http://registry.npm.taobao.org/thenify-all/download/thenify-all-1.6.0.tgz",
+      "integrity": "sha1-GhkY1ALY/D+Y+/I02wvMjMEOlyY=",
+      "requires": {
+        "thenify": "3.3.0"
+      }
+    },
+    "type-is": {
+      "version": "1.6.15",
+      "resolved": "http://registry.npm.taobao.org/type-is/download/type-is-1.6.15.tgz",
+      "integrity": "sha1-yrEPtJCeRByChC6v4a1kbIGARBA=",
+      "requires": {
+        "media-typer": "0.3.0",
+        "mime-types": "2.1.17"
+      }
+    },
+    "unpipe": {
+      "version": "1.0.0",
+      "resolved": "http://registry.npm.taobao.org/unpipe/download/unpipe-1.0.0.tgz",
+      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
+    },
+    "urijs": {
+      "version": "1.19.0",
+      "resolved": "http://registry.npm.taobao.org/urijs/download/urijs-1.19.0.tgz",
+      "integrity": "sha1-2KooTQ50aXA6aYitBFxMv98IraA="
+    },
+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "http://registry.npm.taobao.org/util-deprecate/download/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
+      "optional": true
+    },
+    "vary": {
+      "version": "1.1.2",
+      "resolved": "http://registry.npm.taobao.org/vary/download/vary-1.1.2.tgz",
+      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+    },
+    "window-size": {
+      "version": "0.1.4",
+      "resolved": "http://registry.npm.taobao.org/window-size/download/window-size-0.1.4.tgz",
+      "integrity": "sha1-+OGqHuWlPsW/FR/6CXQqatdpeHY="
+    },
+    "wrap-ansi": {
+      "version": "2.1.0",
+      "resolved": "http://registry.npm.taobao.org/wrap-ansi/download/wrap-ansi-2.1.0.tgz",
+      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+      "requires": {
+        "string-width": "1.0.2",
+        "strip-ansi": "3.0.1"
+      }
+    },
+    "y18n": {
+      "version": "3.2.1",
+      "resolved": "http://registry.npm.taobao.org/y18n/download/y18n-3.2.1.tgz",
+      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
+    },
+    "yargs": {
+      "version": "3.32.0",
+      "resolved": "http://registry.npm.taobao.org/yargs/download/yargs-3.32.0.tgz",
+      "integrity": "sha1-AwiOnr+edWtpdRYR0qXvWRSCyZU=",
+      "requires": {
+        "camelcase": "2.1.1",
+        "cliui": "3.2.0",
+        "decamelize": "1.2.0",
+        "os-locale": "1.4.0",
+        "string-width": "1.0.2",
+        "window-size": "0.1.4",
+        "y18n": "3.2.1"
+      }
+    }
+  }
+}

package.json

+{
+  "name": "duiba-minipgm",
+  "version": "1.0.0",
+  "description": "wechat minigrogram duiba credits mall demo",
+  "main": "app.js",
+  "scripts": {
+    "start": "node ./server/app.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [
+    "duiba",
+    "wechat",
+    "miniprogram",
+    "credits",
+    "malll",
+    "demo"
+  ],
+  "author": "tonyfxt",
+  "license": "ISC",
+  "dependencies": {
+    "koa": "^2.4.1",
+    "koa-bodyparser": "^4.2.0",
+    "koa-router": "^7.4.0",
+    "mime": "^2.2.0",
+    "mz": "^2.7.0",
+    "nunjucks": "^3.0.1"
+  }
+}

server/app.js

+const Koa = require('koa');
+const bodyParser = require('koa-bodyparser');
+// 导入controller middleware:
+const controller = require('./utils/controller');
+const templating = require('./utils/templating');
+
+const isProduction = process.env.NODE_ENV === 'production';
+
+const app = new Koa();
+
+// log request URL:
+app.use(async(ctx, next) => {
+    console.log(`Process ${ctx.request.method} ${ctx.request.url}...`);
+    var
+        start = new Date().getTime(),
+        execTime;
+    await next();
+    execTime = new Date().getTime() - start;
+    ctx.response.set('X-Response-Time', `${execTime}ms`);
+});
+
+// 使用middleware:
+if (!isProduction) {
+    let staticFiles = require('./utils/static-files');
+    app.use(staticFiles('/static/', __dirname + '/static'));
+}
+//解析body
+app.use(bodyParser());
+//使用模板
+app.use(templating('views', {
+    noCache: !isProduction,
+    watch: !isProduction
+}));
+//控制器
+app.use(controller());
+
+app.listen(3000);
+console.log('app started at port 3000...');
\ No newline at end of file

server/controllers/duiba.js

+const md5 = require('../utils/signTools/md5');
+
+const prefix = 'http://home.m.duiba.com.cn/autoLogin/autologin?';
+const appKey = '4EjQPjaceMUWMdSsAqPukuiN7LmD';
+const appSecret = '2kF4RsKiCfHF9cN3ccqLWWyo2K7q';
+// const testurl = 'http://localhost:3000/duiba/inner4me?uid=fxt&credits=1000&dbredirect=http%3a%2f%2ftrade.m.duiba.com.cn%2fcrecord%2frecord';
+
+let autoLogin = async(ctx, next) => {
+  let uid = ctx.request.query['uid'] || 'duiba';
+  let credits = ctx.request.query['credits'] || '100';
+  let redirect = ctx.request.query['dbredirect'];
+  let timestamp = new Date().getTime();
+
+  let params = new Map();
+  params.set('uid', uid);
+  params.set('credits', credits);
+  params.set('appKey', appKey);
+  params.set('timestamp', timestamp);
+  if (!!redirect) {
+    params.set('redirect', redirect);
+  }
+  params.set('appSecret', appSecret);
+
+  let sign = md5.sign(params);
+
+  let autoLoginUrl = '';
+  if (!!redirect) {
+    autoLoginUrl = prefix + 'uid=' + uid + '&credits=' + credits + '&appKey=' + appKey + '&timestamp=' + timestamp + '&sign=' + sign +'&redirect='+ encodeURIComponent(redirect);
+  } else {
+    autoLoginUrl = prefix + 'uid=' + uid + '&credits=' + credits + '&appKey=' + appKey + '&timestamp=' + timestamp + '&sign=' + sign;
+  }
+
+  ctx.redirect(autoLoginUrl);
+}
+
+module.exports = {
+  'GET /duiba/autoLogin': autoLogin
+};

server/utils/controller.js

+/**
+ * 自动扫描加载路由
+ */
+const fs = require('fs');
+// process.cwd() 是当前执行node命令时候的文件夹地址 
+// __dirname 是被执行的js 文件的地址
+const cwd = process.cwd();
+
+function addMapping(router, mapping) {
+    for (var url in mapping) {
+        if (url.startsWith('GET ')) {
+            var path = url.substring(4);
+            router.get(path, mapping[url]);
+            console.log(`register URL mapping: GET ${path}`);
+        } else if (url.startsWith('POST ')) {
+            var path = url.substring(5);
+            router.post(path, mapping[url]);
+            console.log(`register URL mapping: POST ${path}`);
+        } else {
+            console.log(`invalid URL: ${url}`);
+        }
+    }
+}
+
+function addControllers(router) {
+    var files = fs.readdirSync(cwd + '/server/controllers');
+    var js_files = files.filter((f) => {
+        return f.endsWith('.js');
+    });
+
+    for (var f of js_files) {
+        console.log(`process controller: ${f}...`);
+        let mapping = require(cwd + '/server/controllers/' + f);
+        addMapping(router, mapping);
+    }
+}
+
+module.exports = function (dir) {
+    let
+        controllers_dir = dir || 'controllers', // 如果不传参数，扫描目录默认为'controllers'
+        router = require('koa-router')();
+    addControllers(router, controllers_dir);
+    return router.routes();
+};
\ No newline at end of file

server/utils/signTools/blowfishCryptDemo.js

+var Encryption = require('./utils/encryption');
+var e = new Encryption();
+var key = "Ziy66Kf";
+var text = "2dvVjNPS7KNFRfjRZXrTvvvsUak7nJDwgh4QhaA";
+
+var encrypted = e.encrypt(text, key);
+console.log("Encrypted text: "+encrypted);
+
+var decrypted = e.decrypt(encrypted, key);
+console.log("Decrypted text: "+decrypted);
\ No newline at end of file

server/utils/signTools/encryption.js

+var crypto = require('crypto');
+var algorithm = "bf-ecb";
+
+function pad(text) {
+  pad_bytes = 8 - (text.length % 8)
+  for (var x=1; x<=pad_bytes;x++)
+    text = text + String.fromCharCode(0)
+  return text;
+}
+
+function Encryption() {
+  self = this;
+  self.encrypt = function(data, key) {
+    var cipher = crypto.createCipheriv(algorithm, new Buffer(key), '');
+    cipher.setAutoPadding(false);
+    try {
+      return new Buffer(cipher.update(pad(data), 'utf8', 'binary') + cipher.final('binary'), 'binary').toString('base64');
+    } catch (e) {
+      return null;
+    }
+  }
+
+  self.decrypt = function(data, key) {
+    var decipher = crypto.createDecipheriv(algorithm, new Buffer(key), '');
+    decipher.setAutoPadding(false);
+    try {
+      return (decipher.update(new Buffer(data, 'base64').toString('binary'), 'binary', 'utf8')+ decipher.final('utf8')).replace(/\x00+$/g, '');
+    } catch (e) {
+      return null;
+    }
+  }
+}
+
+module.exports = Encryption;
\ No newline at end of file

server/utils/signTools/md5.js

+const crypto = require('crypto');
+
+let sign = (params) => {
+  const hash = crypto.createHash('md5');
+  let array = [];
+  let signStr = '';
+  for (let param of params) {
+    array.push(param);
+  }
+  let sortParams = new Map(array.sort());
+  for (let value of sortParams.values()) {
+    signStr += value;
+  }
+  hash.update(signStr);
+  return hash.digest('hex');
+}
+
+module.exports = {
+  sign: sign
+}

server/utils/static-files.js

+const path = require('path');
+const mime = require('mime');
+const fs = require('mz/fs');
+
+// url: 类似 '/static/'
+// dir: 类似 __dirname + '/static'
+function staticFiles(url, dir) {
+    return async (ctx, next) => {
+        let rpath = ctx.request.path;
+        // 判断是否以指定的url开头:
+        if (rpath.startsWith(url)) {
+            // 获取文件完整路径:
+            let fp = path.join(dir, rpath.substring(url.length));
+            // 判断文件是否存在:
+            if (await fs.exists(fp)) {
+                // 查找文件的mime:
+                ctx.response.type = mime.lookup(rpath);
+                // 读取文件内容并赋值给response.body:
+                ctx.response.body = await fs.readFile(fp);
+            } else {
+                // 文件不存在:
+                ctx.response.status = 404;
+            }
+        } else {
+            // 不是指定前缀的URL，继续处理下一个middleware:
+            await next();
+        }
+    };
+}
+
+module.exports = staticFiles;
\ No newline at end of file

server/utils/templating.js

+const nunjucks = require('nunjucks');
+
+function createEnv(path, opts) {
+    var
+        autoescape = opts.autoescape === undefined ? true : opts.autoescape,
+        noCache = opts.noCache || false,
+        watch = opts.watch || false,
+        throwOnUndefined = opts.throwOnUndefined || false,
+        env = new nunjucks.Environment(
+            new nunjucks.FileSystemLoader(path, {
+                noCache: noCache,
+                watch: watch,
+            }), {
+                autoescape: autoescape,
+                throwOnUndefined: throwOnUndefined
+            });
+    if (opts.filters) {
+        for (var f in opts.filters) {
+            env.addFilter(f, opts.filters[f]);
+        }
+    }
+    return env;
+}
+
+function templating(path, opts) {
+    var env = createEnv(path, opts);
+    return async (ctx, next) => {
+        ctx.render = function (view, model) {
+            ctx.response.body = env.render(view, Object.assign({}, ctx.state || {}, model || {}));
+            ctx.response.type = 'text/html';
+        };
+        await next();
+    };
+}
+
+module.exports = templating;