{"id":143,"date":"2019-03-09T17:23:47","date_gmt":"2019-03-09T09:23:47","guid":{"rendered":"https:\/\/blog.woniufun.com\/?p=143"},"modified":"2019-03-09T17:23:47","modified_gmt":"2019-03-09T09:23:47","slug":"nodejs%e4%b8%ad%e4%bd%bf%e7%94%a8mongoose%e5%92%8cmongoose-long%e6%a8%a1%e5%9d%97%e6%93%8d%e4%bd%9cnumberlong%e6%97%b6%e9%81%87%e5%88%b0%e7%9a%84json%e6%a0%bc%e5%bc%8f%e5%8c%96%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/blog.woniufun.com\/?p=143","title":{"rendered":"nodejs\u4e2d\u4f7f\u7528mongoose\u548cmongoose-long\u6a21\u5757\u64cd\u4f5cNumberLong\u65f6\u9047\u5230\u7684json\u683c\u5f0f\u5316\u95ee\u9898"},"content":{"rendered":"

\u80cc\u666f<\/h1>\n

\u9879\u76ee\u4e2d\u4f7f\u7528\u4e86nodejs+mongo\uff0c\u4f7f\u7528\u7684\u662fmongoose<\/code>\u6a21\u5757\u8fdb\u884c\u6570\u636e\u5e93\u64cd\u4f5c\uff0cmongoose\u672c\u8eab\u7684SchemaTypes\u4e2d\u4e0d\u5305\u542bLong\uff08\u5bf9\u5e94mongo\u4e2d\u7684NumberLong\uff09\uff0c\u6240\u4ee5\u9700\u8981\u989d\u5916\u4e00\u4e2a\u6a21\u5757mongoose-long<\/code>\u6765\u8ba9\u5b83\u652f\u6301\u3002<\/p>\n

let mongoose = require('mongoose');\nrequire('mongoose-long')(mongoose);\nvar SchemaTypes = mongoose.Schema.Types;\nvar MyNumber = mongoose.model('my_number', { num: SchemaTypes.Long });\n<\/code><\/pre>\n
\u4f7f\u7528\u4ee5\u4e0a\u5b9a\u4e49\u7684MyNumber<\/code>\uff0c\u4f7f\u7528JSON.stringify()\u7684\u65f6\u5019\uff0c\u91cc\u9762\u7684num<\/code>\u4f1a\u6309\u7167\u5b57\u7b26\u4e32<\/code>\u8f93\u51fa\u3002<\/p>\n
var record = new MyNumber({ num: 1234556 });\nconsole.log(JSON.stringify(record));\n\/\/\u8f93\u51fa\uff1a{\"num\":\"123456\"}\n<\/code><\/pre>\n
\u89e3\u51b3\u4e4b\u9053<\/h1>\n
\u50bb\u529e\u6cd5<\/h2>\n
var record = new MyNumber({ num: 1234556 });\n\/*\u4e00\u4e9b\u5176\u4ed6\u64cd\u4f5c*\/\n\n\/\/\u628a\u7c7b\u578b\u8f6c\u6362\u6210Number\nrecord.num = record.num.toNumber();\nconsole.log(JSON.stringify(record));\n\/\/\u8f93\u51fa\uff1a{\"num\":123456}\n<\/code><\/pre>\n
\u8fd9\u662f\u4e00\u79cd\u65b9\u6cd5\uff0c\u4f46\u662f\u8fd9\u79cd\u65b9\u6cd5\u6cbb\u6807\u4e0d\u6cbb\u672c\uff0c\u5728\u6240\u6709\u6d89\u53ca\u5230\u7684\u5730\u65b9\u90fd\u8981\u6539\u5bf9\u5e94\u7684\u503c\uff0c\u5c11\u6539\u4e00\u4e2a\u5c31\u8fd8\u662f\u6709\u95ee\u9898\u3002<\/p>\n
\u65b0\u529e\u6cd5<\/h2>\n
\u5728\u627e\u529e\u6cd5\u7684\u8fc7\u7a0b\u4e2d\uff0c\u9996\u5148\u53d1\u73b0\uff0cJSON.stringify(obj)\u4f1a\u9996\u5148\u53bb\u627e\u6709\u6ca1\u6709obj.prototype.toJSON\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u5982\u679c\u6709\u7684\u8bdd\u5c31\u7528\u8fd9\u4e2a\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u3002
\n\u6240\u4ee5\uff0c\u65b9\u5411\u5c31\u53d8\u6210\u53bb\u627e\u5230num<\/code>\u7684\u539f\u578b\u3002\u4e00\u5f00\u59cb\u6211\u4ee5\u4e3a\u5b83\u7684\u7c7b\u578b\u662fSchemaTypes.Long<\/code>\uff0c\u589e\u52a0SchemaTypes.Long.prototype.toJSON=function(){return this.toNumber();}<\/code>\uff0c\u6d4b\u8bd5\u540e\u53d1\u73b0\u4e0d\u8d77\u4f5c\u7528\u3002
\n\u518d\u7ecf\u8fc7\u8c03\u8bd5\u53d1\u73b0\uff0cmongoose\u91cc\u9762\u7528\u5230\u4e86\u4e00\u4e2a\u6a21\u5757bson\uff0c\u7528\u5230\u4e86bson\u4e2d\u7684\u5927\u90e8\u5206\u6570\u636e\u7c7b\u578b\uff0c\u5176\u4e2d\u5c31\u5305\u62ec\u4e86bson.Long<\/code>\uff0c\u800c\u4e0a\u9762\u7684record<\/code>\u7ed3\u6784\u786e\u5b9e\u5c31\u662fbson.Long<\/code>\u7684\u7ed3\u6784\uff0c\u4e8e\u662f\uff0c\u5c31\u7b80\u5355\u4e86\u3002<\/p>\n
\/\/ \u4fee\u590dmongoose-long\u8f6c\u6362\u6210json\u5b57\u7b26\u4e32\u65f6\u53d8\u6210string\u800c\u4e0d\u662fnumber\u7684bug\nrequire(\"bson\").Long.prototype.toJSON=function(){return this.toNumber();}\n\nvar record = new MyNumber({ num: 1234556 });\nconsole.log(JSON.stringify(record));\n\/\/\u8f93\u51fa\uff1a{\"num\":123456}\n<\/code><\/pre>\n
\u81f3\u6b64\uff0c\u95ee\u9898\u603b\u7b97\u89e3\u51b3\u3002<\/p>\n
\u6269\u5c55<\/h1>\n
\u5728\u89e3\u51b3\u95ee\u9898\u7684\u8fc7\u7a0b\u4e2d\uff0c\u53d1\u73b0mongoose\u7684api\u4e5f\u63d0\u4f9b\u4e86\u91cd\u65b0\u5b9e\u73b0toJSON\u7684\u65b9\u5f0f\u3002
\nhttps:\/\/mongoosejs.com\/docs\/api.html#document_Document-toJSON<\/a>
\n\u8fd9\u4e2a\u65b9\u5f0f\u8c8c\u4f3c\u662f\u5bf9model\u4e2d\u67d0\u4e2a\u5177\u4f53\u5b57\u6bb5\u8fdb\u884c\u8bbe\u7f6e\u7684\uff0c\u6ca1\u6709\u7ec6\u7814\u7a76\uff0c\u6709\u5174\u8da3\u7684\u53ef\u4ee5\u7814\u7a76\u7814\u7a76\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u80cc\u666f \u9879\u76ee\u4e2d\u4f7f\u7528\u4e86nodejs+mongo\uff0c\u4f7f\u7528\u7684\u662fmongoose\u6a21\u5757\u8fdb\u884c\u6570\u636e\u5e93\u64cd\u4f5c\uff0cmongoose\u672c\u8eab\u7684SchemaTypes\u4e2d\u4e0d\u5305\u542bLong\uff08\u5bf9\u5e94mon…<\/p>\n
 Read More  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[15,14,16],"_links":{"self":[{"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=\/wp\/v2\/posts\/143"}],"collection":[{"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=143"}],"version-history":[{"count":1,"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=\/wp\/v2\/posts\/143\/revisions"}],"predecessor-version":[{"id":144,"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=\/wp\/v2\/posts\/143\/revisions\/144"}],"wp:attachment":[{"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.woniufun.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}