swagger生成的Nodejs :错误:请求实体太大

Question

使用editor.swagger生成的Nodejs代码，在正文中，我想发送10mb，但无法发送，我收到了这个错误：

Error: request entity too large
    at makeError (c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\node_modules\body-parser\node_modules\raw-body\index.js:154:15)
    at readStream (c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\node_modules\body-parser\node_modules\raw-body\index.js:188:15)
    at getRawBody (c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\node_modules\body-parser\node_modules\raw-body\index.js:95:12)
    at read (c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\node_modules\body-parser\lib\read.js:64:3)
    at jsonParser (c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\node_modules\body-parser\lib\types\json.js:116:5)
    at c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\middleware\swagger-metadata.js:72:9
    at urlencodedParser (c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\node_modules\body-parser\lib\types\urlencoded.js:91:37)
    at bodyParser (c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\middleware\swagger-metadata.js:68:5)
    at c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\middleware\swagger-metadata.js:258:5
    at c:\apigee\dojo\nodeServer_2\node\node_modules\swagger-tools\node_modules\async\lib\async.js:356:13

我已经尝试过此选项，但仍然出现相同的错误。以下是来自index.js的示例代码：

swaggerTools.initializeMiddleware(swaggerDoc, function (middleware) {
  // Interpret Swagger resources and attach metadata to request - must be first in swagger-tools middleware chain
     app.use(middleware.swaggerMetadata());
  /*app.use(middleware.swaggerMetadata(
      bodyParser.json({limit: "50mb"}),
      bodyParser.urlencoded({ limit: "50mb", extended: true })
  )
  );*/

  // Validate Swagger requests
  app.use(middleware.swaggerValidator());

  // Route validated requests to appropriate controller
  app.use(middleware.swaggerRouter(options));

  // Serve the Swagger documents and Swagger UI
  app.use(middleware.swaggerUi());

  //app.use(bodyParser.json({limit: "50mb"}));
  //app.use(bodyParser.urlencoded({ limit: "50mb", extended: true }));

  app.use(bodyParser.json({limit: 10 * 1024 * 1024}));
  app.use(bodyParser.raw({limit: 10 * 1024 * 1024}));
  app.use(bodyParser.text({limit: 10 * 1024 * 1024}));
  app.use(bodyParser.urlencoded({limit: 10 * 1024 * 1024, extended: true}));

Answer 1

根据https://github.com/apigee-127/swagger-tools/issues/248中指定的说明，您需要在初始化swagger之前配置bodyParser，如下所示：

app.use(bodyParser.json({limit: 10 * 1024 * 1024}));
app.use(bodyParser.raw({limit: 10 * 1024 * 1024}));

app.use(require("./router")); // in this sample, this is where you configure your Swagger middleware

这样，Swagger将使用您配置的bodyParser和您设置的限制。我正在解决同样的问题，这个解决了它。

Answer 2

这是来自对请求正文进行解码的body-parser的错误。它有一个大小限制选项：

https://github.com/expressjs/body-parser#limit

swagger-工具在不修改请求大小限制的情况下使用它，因此默认限制为100kb：

https://github.com/apigee-127/swagger-tools/blob/master/middleware/swagger-metadata.js#L48

添加已配置的body-parser不会影响swagger-tools的内部调用。这个问题应该通过swagger-tools来解决。否则你只能破解上面的代码。