TypeError：无法读取未定义的属性'expressMiddleware'

问题描述

发生错误：

回调错误！抛向全局错误处理程序。 TypeError：无法读取未定义的属性“ expressMiddleware” 在SwaggerRunner.create（/home/feel/cfeel-core/node_modules/feel-framework/src/modules/http_api/init_steps/bootstrap_swagger.js:318:33）在/home/feel/cfeel-core/node_modules/swagger-node-runner/index.js:237:7

代码如下

/home/feel/cfeel-core/node_modules/feel-framework/src/modules/http_api/init_steps/bootstrap_swagger.js:318:33）

    // Swagger express middleware
    SwaggerRunner.create(swaggerConfig,(errors,runner) => {
        if (errors) {
            // Ignore unused deFinition warning
            errors.validationWarnings = _.filter(
                errors.validationWarnings,error => error.code !== 'UNUSED_DEFinitioN',);

            // Some error occurred in configuring the swagger
            if (!_.isEmpty(errors.validationErrors)) {
                logger.error('Swagger Validation Errors:');
                logger.error(errors.validationErrors);
            }

            if (!_.isEmpty(errors.validationWarnings)) {
                logger.error('Swagger Validation Warnings:');
                logger.error(errors.validationWarnings);
            }

            if (
                !_.isEmpty(errors.validationErrors) ||
                !_.isEmpty(errors.validationWarnings)
            ) {
                cb(errors);
                return;
            }
        }

        // Swagger express middleware
        const swaggerExpress = runner.expressMiddleware();//318:33
        
        // Check the response and act appropriately on error
        runner.on('responseValidationError',validationResponse => {
            // Todo: Troubleshoot why default validation hook considers json response as string response
            if (validationResponse.errors[0].code !== 'INVALID_RESPONSE_BODY') {
                logger.error('Swagger Response Validation Errors:');
                logger.error(validationResponse.errors[0].errors);
            }
        });

        // Install middleware
        swaggerExpress.register(app);

        // To be used in test cases or getting configuration runtime
        app.swaggerRunner = runner;

        // Managing all the queries which were not caught by prevIoUs middlewares.
        app.use((req,res,next) => {
            // We need to check if the response is already handled by some other middlewares/fittings/controllers
            // In case not,we consider it as 404 and send default response
            // res.headeRSSent is a patch,and only works if above middlewares set some header no matter the status code
            // Another possible workaround would be res.bodySize === 0
            if (!res.headeRSSent) {
                res.status(404);
                res.json({ description: 'Page not found' });
            }
            next();
        });

        swaggerHelper
            .getSchemaAsJSON()
            .then(resolvedSchema => {
                // Successfully mounted the swagger runner
                cb(null,{
                    swaggerRunner: runner,deFinitions: resolvedSchema.deFinitions,});
            })
            .catch(reason => {
                logger.error(reason.toString());
                cb(reason);
            });
    });
}

/home/feel/cfeel-core/node_modules/swagger-node-runner/index.js:237:7

    cb(null,self);
    })
    .catch(function(err) {
      cb(err);//237:7
    })

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）

middleware swagger