{"id":299124,"date":"2021-01-18T10:38:54","date_gmt":"2021-01-18T02:38:54","guid":{"rendered":"http:\/\/4563.org\/?p=299124"},"modified":"2021-01-18T10:38:54","modified_gmt":"2021-01-18T02:38:54","slug":"%e8%af%b7%e9%97%ae%ef%bc%8c%e5%a6%82%e6%9e%9c%e5%9c%a8-node-%e5%90%af%e5%8a%a8-express-server-%e7%9a%84%e6%97%b6%e5%80%99%ef%bc%8c%e6%b7%bb%e5%8a%a0%e7%8e%af%e5%a2%83%e5%8f%98%e9%87%8f%e5%88%b0-proces","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=299124","title":{"rendered":"\u8bf7\u95ee\uff0c\u5982\u679c\u5728 node \u542f\u52a8 express server \u7684\u65f6\u5019\uff0c\u6dfb\u52a0\u73af\u5883\u53d8\u91cf\u5230 process.env \u91cc\u9762\u53bb\uff1f"},"content":{"rendered":"
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\u8bf7\u95ee\uff0c\u5982\u679c\u5728 node \u542f\u52a8 express server \u7684\u65f6\u5019\uff0c\u6dfb\u52a0\u73af\u5883\u53d8\u91cf\u5230 process.env \u91cc\u9762\u53bb\uff1f <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : yazoox <\/span> <\/i> 5<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

nodejs + express<\/p>\n

\u6709\u4e00\u4e2a server.js \u811a\u672c\uff0c\u91cc\u9762\u4f1a\u542f\u52a8 express server \u73b0\u5728\uff0c\u6211\u60f3\u901a\u8fc7\u547d\u4ee4\u884c\u53c2\u6570\uff0c\u6dfb\u52a0\u73af\u5883\u53d8\u91cf\uff0c\u4f8b\u5982<\/p>\n

node server.js --port --test <\/code><\/pre>\n
\u5373\u5728 server.js \u91cc\u9762 \u6839\u636e\u53c2\u6570 –test \u518d\u53bb\u8bbe\u7f6e\u6bd4\u5982 process.env[“test”]\uff0c\u56e0\u4e3a\u540e\u9762\u7684.js \u91cc\u9762\u9700\u8981\u4f7f\u7528\u8fd9\u4e2a\u53d8\u91cf\u3002<\/p>\n
const program = require(\"commander\");  progra.option(\"-p, --port\", \"\").option(\"-t, --test\", \"\").parse(process.argv);  if (program.test) {   process.env[\"test\"] = \"true\"; } <\/code><\/pre>\n
\u6211\u8bd5\u7740\u76f4\u63a5\u8bbe\u7f6e process.env[“test”]\uff0c\u7ed3\u679c\u4e0d\u884c\u3002 \u56e0\u4e3a\u5728\u540e\u9762\u7684 index.tsx \uff0c\u6216\u8005 webpack.dev.js \u91cc\u9762\uff0c\u5c1d\u8bd5\u8bfb\u53d6 process.env[“test”]\u4f1a\u5931\u8d25,\u8fd4\u56de undefined.<\/p>\n
\u6240\u4ee5\uff0c\u7279\u6765\u8bf7\u6559\u3002<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (8<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : ysc3839 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u53ef\u80fd\u662f\u8981 process.env.foo = ‘bar’; \u8fd9\u6837
    https:\/\/nodejs.org\/dist\/latest-v8.x\/docs\/api\/process.html#process_process_env                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : DL9412 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u9996\u5148\uff0c\u8fd9\u4e2a\u914d\u7f6e\u751f\u6548\u4e86\u5417\uff1f<\/p>\n
    \u6211\u6ca1\u770b\u5230\u4f60\u8fd9\u4e2a progra \u7684\u5b9e\u4f8b\u5316\u58f0\u660e\u3002\u662f\u5426\u53ef\u4ee5\u7406\u89e3\u4e3a progra.option \u5e94\u4e3a program.option\uff0c\u68c0\u67e5\u4e00\u4e0b\u62fc\u5199\uff1f                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : yazoox <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @DL9412 typo issue\uff0c\u5ffd\u7565\u90a3\u4e2a\u3002<\/p>\n
    @ysc3839 \u5176\u5b9e\uff0c\u4f60\u7684\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u4ee5\u53ca\u6211\u7684\u65b9\u6cd5\uff0cprocess.env.test \u6216\u8005 process.env[“test”] \u5728 server.js \u91cc\u9762\uff0c\u90fd\u662f\u6709\u6548\u7684\u3002\u56e0\u4e3a\u6211\u540e\u9762\u6dfb\u52a0\u4e86
    “`
    if (process.env.test) {
     console.log(“test is enabled”);
    }<\/p>\n
    \u6216\u8005 
    if (process.env[“test”]) {
     console.log(“test is enabled”);
    }
    “`
    \u5728\u8fd0\u884c node server.js –test \u540e\uff0c\u5728 mac terminal \u91cc\u9762\uff0c\u90fd\u6253\u5370\u51fa\u6765\u4e86\u8fd9\u4e00\u884c\u3002\u8bf4\u660e \u8fd9\u4e2a\u73af\u5883 \u53d8\u91cf\u8bbe\u7f6e\u4e0a\u53bb\u4e86\u3002
    \u4f46\u662f\uff0c\u540e\u9762\u5728 build webpack.dev.js \u4ee5\u524d \u9879\u76ee\u4ee3\u7801\u91cc\u9762\uff0c\u518d\u53bb\u8bfb\u53d6\u8fd9\u4e2a\u503c\uff0c\u8c8c\u4f3c\u5c31\u8bfb\u4e0d\u5230\u4e86……                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : flyingfz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 build webpack.dev.js \u6000\u7591\u5728\u8fd9\u4e2a\u6b65\u9aa4\u91cc\uff0c \u662f\u53e6\u5916\u4e00\u4e2a\u72ec\u7acb\u7684\u8fdb\u7a0b\u4e86\u3002 \u4e0d\u6e05\u695a\u4f60\u5177\u4f53\u7684\u573a\u666f\u662f\u600e\u4e48\u6837\u7684\u3002 <\/p>\n
    \u8fd9\u4e2a\u95ee\u9898\uff0c\u5e94\u8be5\u8981\u8003\u8651 \u5728 node server.js \u524d\uff0c \u8bbe\u7f6e\u73af\u5883\u53d8\u91cf. \u800c\u4e0d\u8981\u60f3\u7740 \u901a\u8fc7 \u53c2\u6570\uff0c \u518d\u8bbe\u7f6e process.env[“xxx”] \u8fd9\u79cd\u65b9\u5f0f\u3002.                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : Jirajine <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @yazoox \u6709\u6ca1\u6709\u8bbe\u7f6e\u4e0a\u53bb\u4f60\u5f97\u4ece\u5916\u90e8\u770b\u3002
    \u901a\u8fc7 \/proc \u6216 \u76f4\u63a5 htop \u6309 e \u68c0\u67e5\u8fd0\u884c\u7684\u8fdb\u7a0b\u73af\u5883\u53d8\u91cf\u662f\u5426\u751f\u6548\uff0c\u4ee5\u53ca\u5176\u5b50\u8fdb\u7a0b\u662f\u5426\u7ee7\u627f\u5230\u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : nigelvon <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 NODE_ENV=development node server.js                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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     \u8cc7\u6df1\u5927\u4f6c : 66450146 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5982\u679c\u5728 node \u542f\u52a8 express server \u7684\u65f6\u5019\uff0c\u6dfb\u52a0\u73af\u5883\u53d8\u91cf\u5230 process.env \u91cc\u9762\u53bb\uff0c\u90a3\u4e48\u4f60\u5c31\u53ef\u4ee5\u4ece process.env \u4e2d\u8bfb\u53d6\u5230\u6dfb\u52a0\u7684\u73af\u5883\u53d8\u91cf                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : yazoox <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @flyingfz \u4f60\u7684\u6000\u7591\u662f\u5bf9\u7684\u3002\u5c31\u662f\u8fd9\u91cc\u51fa\u7684\u95ee\u9898\u3002
    \u6211\u4eec\u7684 webpack.dev.js \u91cc\u9762\uff0c\u4f7f\u7528 webpack \u7684\u63d2\u4ef6\uff0c\u4fee\u6539\u4e86 process.env, e.g:
     new webpack.DefinePlugin({
     “process.env”: {
     NODE_ENV: JSON.stringify(“development”),
     …
     }
     })<\/p>\n
    \u6240\u4ee5 \uff0c\u6211\u6dfb\u52a0\u4e86\u4e00\u53e5
    TEST: process.env.test ? “test”: undefined<\/p>\n
    \u7136\u540e\uff0c\u5728\u6211\u7684 project \u91cc\u9762\uff0c\u76f4\u63a5\u4f7f\u7528
    if (process.env.TEST) {<\/p>\n
    }<\/p>\n
    \u5c31\u53ef\u4ee5\u5de5\u4f5c\u4e86\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u8bf7\u95ee\uff0c\u5982\u679c\u5728 node \u542f\u52a8 ex…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/299124"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=299124"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/299124\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=299124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=299124"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=299124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}