blocks|key|26290|text|在经历了几个小时的挫折之后，我只是像这样把它添加到了middleware.json中：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|26291|"parse":+{
++++"body-parser#json":+{},
++++"body-parser#urlencoded":+{"params":+{+"extended":+true+}}
}|code-block|syntax|javascript|26292|它是作为依赖项安装的。现在，我的路由中有req.body格式的表单数据。我的server/boot/routes.js看起来像这样：|26293|module.exports+=+function(app)+{
++++app.post('/mailing_list',+function(req,+res)+{
++++++++console.log(req.body.email);
++++++++res.send({"status":+1,+"message":+"Successfully+added+to+mailing+list."})
++++});
}|26294|entityMap^0|Q|F|0|0|K|8|12|L|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|P|$]]

After hours of frustration, I just added it to <code>middleware.json</code> like so:

<pre><code>"parse": {
 "body-parser#json": {},
 "body-parser#urlencoded": {"params": { "extended": true }}
}
</code></pre>

It is installed as a dependency. Now I have form data in <code>req.body</code> in my routes. My <code>server/boot/routes.js</code> looks like this:

<pre><code>module.exports = function(app) {
 app.post('/mailing_list', function(req, res) {
 console.log(req.body.email);
 res.send({"status": 1, "message": "Successfully added to mailing list."})
 });
}
</code></pre>

blocks|key|4533862|text|为了更清楚地了解需要什么才能让它工作(因为在找到这个答案后，我仍然挣扎了一段时间！)，下面是我采取的步骤：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4533863|如上所述，在$APP_HOME/server/midleware.json中，将body-parser添加到"parse“部分：|4533864|{
++"initial:before":+{
++++"loopback#favicon":+{}
++},
++"initial":+{
++++"compression":+{},
++++"cors":+{
++++++"params":+{
++++++++"origin":+true,
++++++++"credentials":+true,
++++++++"maxAge":+86400
++++++}
++++}
++},
++"session":+{
++},
++"auth":+{
++},
++"parse":+{
++++"body-parser#json":+{},
++++"body-parser#urlencoded":+{"params":+{+"extended":+true+}}
++},
++"routes":+{
++},
++"files":+{
++},
++"final":+{
++++"loopback#urlNotFound":+{}
++},
++"final:after":+{
++++"errorhandler":+{}
++}
}|code-block|syntax|javascript|4533865|接下来，我将解析器设置添加到$APP_HOME/server/server.js：|4533866|var+loopback+=+require('loopback');
var+bodyParser+=+require('body-parser');
var+multer+=+require('multer');

var+boot+=+require('loopback-boot');

var+app+=+module.exports+=+loopback();

app.use(bodyParser.json());+//+for+parsing+application/json
app.use(bodyParser.urlencoded({+extended:+true+}));+//+for+parsing+application/x-www-form-urlencoded
app.use(multer());+//+for+parsing+multipart/form-data

app.start+=+function()+{
...
...
cont'd|4533867|然后，由于我不想弄乱自定义路由，我将以下内容添加到$APP_HOME/common/models/model.js：|4533868|module.exports+=+function(Model)+{

++Model.incoming+=+function(req,+cb)+{
++++cb(null,+'Hey+there,+'+%2B+req.body.sender);
++}
++Model.remoteMethod(
++++'incoming',
++++{+accepts:+[
++++++{+arg:+'req',+type:+'object',+http:+function(ctx)+{
++++++++return+ctx.req;
++++++}+
++++}],
++++returns:+{arg:+'summary',+type:+'string'}
++++}
++);
};|4533869|我现在可以使用$>+slc+run来运行我的应用程序了。|4533870|当我发布到端点时，它现在得到了正确的解析，一切都很顺利。我希望这对其他人有帮助！|4533871|entityMap^0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Y|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|12|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

Just to be more clear about what it takes to get this working (because I still struggled for a while after finding this answer!), here are the steps I took:

As described above, in $APP_HOME/server/middleware.json, add the body-parser to the "parse" section:

<pre><code>{
 "initial:before": {
 "loopback#favicon": {}
 },
 "initial": {
 "compression": {},
 "cors": {
 "params": {
 "origin": true,
 "credentials": true,
 "maxAge": 86400
 }
 }
 },
 "session": {
 },
 "auth": {
 },
 "parse": {
 "body-parser#json": {},
 "body-parser#urlencoded": {"params": { "extended": true }}
 },
 "routes": {
 },
 "files": {
 },
 "final": {
 "loopback#urlNotFound": {}
 },
 "final:after": {
 "errorhandler": {}
 }
}
</code></pre>

Next, I added the parser setup to $APP_HOME/server/server.js:

<pre><code>var loopback = require('loopback');
var bodyParser = require('body-parser');
var multer = require('multer');

var boot = require('loopback-boot');

var app = module.exports = loopback();

app.use(bodyParser.json()); // for parsing application/json
app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded
app.use(multer()); // for parsing multipart/form-data

app.start = function() {
...
...
cont'd
</code></pre>

Then, since I didn't want to mess with custom routes, I added the following to $APP_HOME/common/models/model.js:

<pre><code>module.exports = function(Model) {

 Model.incoming = function(req, cb) {
 cb(null, 'Hey there, ' + req.body.sender);
 }
 Model.remoteMethod(
 'incoming',
 { accepts: [
 { arg: 'req', type: 'object', http: function(ctx) {
 return ctx.req;
 } 
 }],
 returns: {arg: 'summary', type: 'string'}
 }
 );
};
</code></pre>

I can now run my app with $> slc run . 

When I post to the endpoint, it now gets parsed properly, and all is well with the world. I hope this helps someone else!

blocks|key|26421|text|我张贴这篇文章只是为了提供信息。我遇到了同样的问题，并发现这也是有效的。您可以使用以下内容在server/boot/目录中添加文件：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|26422|var+bodyParser+=+require('body-parser');

module.exports+=+function(app)+{
++app.use(bodyParser.urlencoded({+extended:+true+}));
}|code-block|syntax|javascript|26423|当然，您必须通过运行以下命令来安装软件包：|26424|npm+install+--save+body-parser|26425|这将把包保存在node_modules目录下。如果你想让它成为第一个运行的东西，你可以以"0“作为文件名的开头，因为这些文件是按字母顺序加载的。|26426|话虽如此，我认为使用上面提到的中间件配置方法比使用这种方法更“正确”和优雅，但我将其分享给其他人，以防其他人发现它有用。|26427|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I'm posting this just for informational purposes. I ran into this same issue and found this works as well. You can add a file in the server/boot/ directory with the following:

<pre><code>var bodyParser = require('body-parser');

module.exports = function(app) {
 app.use(bodyParser.urlencoded({ extended: true }));
}
</code></pre>

Of course, you have to install the package by running:

<pre><code>npm install --save body-parser
</code></pre>

That will save the package under the node_modules directory.
If you want it to be the first thing to run, you can start the file name with a "0" since these are loaded in alphabetical order. 

That being said, I figure it is more 'correct' and elegant to use the middleware configuration approach mentioned above than this one, but I share it in the event someone else finds it useful.

blocks|key|4533955|text|我使用的是loopback+2.14.0：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4533956|要在自定义引导脚本路由中使用正文解析器，您只需：|4533957|1)安装body-parser+npm+install+body-parser+--save|offset|length|style|CODE|4533958|2)在middleware.json中注册模块|4533959|"parse":+{
"body-parser#json":+{},
"body-parser#urlencoded":+{"params":+{+"extended":+true+}}
},|code-block|syntax|javascript|4533960|不需要在server.js中设置解析器，loopback会在您注册中间件时为您完成此操作。|4533961|请注意，正文解析器现在已经安装在您的源"node_modules“目录和回送模块目录中。|4533962|如果可能，请尝试按照loopback+documentation中的描述注册自定义远程方法。|4533963|以这种方式注册路由使您能够访问loopback的开箱即用的主体解析器，并且是“最干净”的实现。|4533964|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.strongloop.com/display/public/LB/Remote%2Bmethods^0|0|0|G|U|0|0|0|0|0|A|M|0|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|17|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|18|8|@$F|19|G|1A|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|1B|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1C|8|@]|9|@]|A|$O|P]]|$1|Q|3|R|5|6|7|1D|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1E|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1F|8|@]|9|@$F|1G|G|1H|1|1I]]|A|$]]|$1|W|3|X|5|6|7|1J|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15]]]]

I'm using loopback 2.14.0:

To make use of the body-parser in your custom bootscript routes you should only need to:

1) install body-parser
<code>
npm install body-parser --save
</code>

2) Register the the module in middleware.json

<pre><code>"parse": {
"body-parser#json": {},
"body-parser#urlencoded": {"params": { "extended": true }}
},
</code></pre>

There is no need to require the parser setup in server.js, loopback does this for you when you register the middleware.

Please note body parser is now installed in your source "node_modules" directory as well as in the loopback modules directory.

If at all possible try register custom remote methods as described in the <a href="https://docs.strongloop.com/display/public/LB/Remote+methods" rel="noreferrer">loopback documentation</a>.

Registering routes this way gives you access to loopback's body-parser out of the box and is the 'cleanest' implementation.

blocks|key|4533988|text|您也可以在loopback中使用express框架的内置解析器，例如json解析：app.use(app.loopback.json());|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4533989|entityMap^0|15|T|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

One could also use the built-in parser of express framework inside loopback like this, for example for json parsing:
<code>app.use(app.loopback.json());</code>

blocks|key|26575|text|根据Ben+Carlson的回答https://stackoverflow.com/a/29813184/605586，你必须|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|26576|npm+install+--save+body-parser+multer|code-block|syntax|javascript|26577|然后在你的server.js中需要这些模块：|26578|var+bodyParser+=+require('body-parser');
var+multer+=+require('multer');|26579|并在app.start之前使用它们：|26580|app.use(bodyParser.json());+//+for+parsing+application/json
app.use(bodyParser.urlencoded({+extended:+true+}));+//+for+parsing+application/x-www-form-urlencoded
app.use(multer().any());+//+for+parsing+multipart/form-data|26581|然后，您可以创建一个远程方法：|26582|App.incoming+=+function+(req,+cb)+{
++++console.log(req);
++++//+the+files+are+available+as+req.files.
++++//+the+body+fields+are+available+in+req.body
++++cb(null,+'Hey+there,+'+%2B+req.body.sender);
}
App.remoteMethod(
++++'incoming',
++++{
++++accepts:+[
++++++++{
++++++++arg:+'req',+type:+'object',+http:+function+(ctx)+{
++++++++++++return+ctx.req;
++++++++}
++++++++}],
++++returns:+{+arg:+'summary',+type:+'string'+}
++++}
);|26583|使用此功能，您可以使用multipart/form-data将文件和其他数据字段上传到环回。|26584|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/29813184/605586^0|G|17|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]]|C|$]]|$1|D|3|E|5|F|7|18|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|19|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|1A|8|@]|9|@]|C|$G|H]]|$1|M|3|N|5|6|7|1B|8|@]|9|@]|C|$]]|$1|O|3|P|5|F|7|1C|8|@]|9|@]|C|$G|H]]|$1|Q|3|R|5|6|7|1D|8|@]|9|@]|C|$]]|$1|S|3|T|5|F|7|1E|8|@]|9|@]|C|$G|H]]|$1|U|3|V|5|6|7|1F|8|@]|9|@]|C|$]]|$1|W|3|-4|5|6|7|1G|8|@]|9|@]|C|$]]]|X|$Y|$5|Z|10|11|C|$12|13]]]]

Based on this answer <a href="https://stackoverflow.com/a/29813184/605586">https://stackoverflow.com/a/29813184/605586</a> from Ben Carlson you have to

<pre><code>npm install --save body-parser multer
</code></pre>

then in your server.js require the modules:

<pre><code>var bodyParser = require('body-parser');
var multer = require('multer');
</code></pre>

and use them before app.start:

<pre><code>app.use(bodyParser.json()); // for parsing application/json
app.use(bodyParser.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded
app.use(multer().any()); // for parsing multipart/form-data
</code></pre>

Then you can create a remote method:

<pre><code>App.incoming = function (req, cb) {
 console.log(req);
 // the files are available as req.files.
 // the body fields are available in req.body
 cb(null, 'Hey there, ' + req.body.sender);
}
App.remoteMethod(
 'incoming',
 {
 accepts: [
 {
 arg: 'req', type: 'object', http: function (ctx) {
 return ctx.req;
 }
 }],
 returns: { arg: 'summary', type: 'string' }
 }
);
</code></pre>

Using this you can upload files and additional data fields to loopback with multipart/form-data.

blocks|key|26623|text|在Loopback%5E3.22.0中，我只需添加|type|unstyled|depth|inlineStyleRanges|entityRanges|data|26624|"parse":+{
++++"body-parser#json":+{}
++},|code-block|syntax|javascript|26625|以使用server/boot/routes.js中的application/json+post主体|26626|module.exports+=+function(app)+{
++app.post('/api/sayhello',+function(req,+res,+next)+{
+++++console.log(req.body)|26627|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

In Loopback ^3.22.0, I can suffice by adding the 

<pre><code>"parse": {
 "body-parser#json": {}
 },
</code></pre>

to the server/middleware.json
in order to consume application/json post bodies in the server/boot/routes.js

<pre><code>module.exports = function(app) {
 app.post('/api/sayhello', function(req, res, next) {
 console.log(req.body)
</code></pre>

I see that LoopBack has the Express 3.x middleware built-in. Indeed, body-parser is in <code>loopback/node_modules</code>. But I cannot figure out how to use it as middleware. I have never worked with Express 3.x, so maybe it's just that. <code>require</code> does not work, obviously, unless I install body-parser as a dependency in my project. 

What should I do in <code>server.js</code> to use body-parser so that web forms are parsed into <code>req.params</code>? That's what it does, right?

How can I use body-parser with LoopBack?

中间件

路由

我看到LoopBack内置了Express3.x中间件。事实上，正文解析器是用loopback/node_modules编写的。但是我不知道如何使用它作为中间件。我从来没有使用过Express 3.x，所以可能就是这样。显然，除非我将主体解析器作为依赖项安装在项目中，否则require无法工作。要使用正文解析器以便将w...

问如何在LoopBack中使用正文解析器？
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何在LoopBack中使用正文解析器？EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问如何在LoopBack中使用正文解析器？
EN