Advanced rest client for chrome post demo

#Advanced rest client for chrome post demo how to#
#Advanced rest client for chrome post demo code#

Spring Restful web service Controller class Public class Employee implements Serializable' LetвЂ™s write a simple POJO class that will serve as input and output to our Restful web service methods. By having this configuration, we will be using JSON in request body and we will receive JSON data in the response. However important points to note are annotation-driven element to support annotations based configuration and plugging in MappingJackson2HttpMessageConverter to the RequestMappingHandlerAdapter messageConverters so that Jackson API kicks in and converts JSON to Java Beans and vice versa. Most of the part is auto generated and contains boiler-plate configurations. This file contains the shared resources that will be visible to all the web components, we will be developing a simple rest service and thatвЂ™s why I havenвЂ™t changed anything here. However, if you want to change context configuration files and their location, you can do it in the web.xml file. This file is generated automatically and I havenвЂ™t changed anything in that. WEB-INF/spring/appServlet/servlet-context.xml Most of the part is common and generated automatically, the important point to note is that I have added Jackson JSON libraries in the dependency because we will use that to convert Objects to JSON and vice versa. However, I have updated the Spring Framework, AspectJ, SLF4J and Jackson version to the latest one as of today. STS tool generates the pom.xml file for us. So the simplest thing we could do here is to ensure our.

Ok, we know of query parameters in Express, that they reside under the request.query.

router parameters, here it would make sense to first off check that we are getting a number if we should get a number that is ( we could be sending GUIDs for example ) and maybe check that we are not sending something that is obviously wrong like a 0 or something.

Imagine us doing a crazy request and our database contains a few million products, AOUCH рџѓ

query parameters, here it makes sense to check that for example parameters like page and pageSize exist and is of type number.

Ok, great we can deal with BODY in POST request what about router parameters and query parameters and what would we like to validate with them:

#Advanced rest client for chrome post demo code#

Remember our schema for this route said that title and description were mandatory so let's try to crash it, let's omit title and see what happens:ДЄha, we get a 422 status code and the message title is required, so Joi does what it is supposed to. LetвЂ™s try to make a POST request to /blog. We opt for using a chrome plugin called Advanced REST Client. We could do a fetch() call from a browser console or use cURL and so on.

#Advanced rest client for chrome post demo how to#

Ok, so we have only shown how to declare a schema so far that is one level deep. I suggest to have a look and see if there is a helper function that can solve whatever case you have that IвЂ™m not showing above

regex, it supports pattern matching with RegEx as well like so Joi.string().regex(/^$/).

array, we can check wether the property is an array of say strings, then it would look like this Joi.array().items(Joi.string().valid('a', 'b').

However if we do provide it and make it an integer the validation will fail If we don't provide prop then everybody's happy. If you specify for example prop : Joi.string().optional.

optional, this is strictly speaking not a type but has an interesting effect.

any, this means it could be any type, usually we tend to use it with the helper allow() that specifies what it can contain, like so, Joi.any().allow('a').

required, we can say whether a property is required with the help of the method required, like so Joi.string().required().

number, Joi.number() and also supporting helper operations such as min() and max(), like so Joi.number().min(1).max(10).

string, this says it needs to be of type string, and we use it like so Joi.string().

LetвЂ™s list some different constructs it supports:

Well Joi supports all sorts of primitives as well as Regex and can be nested to any depth.

validating our data, our call to Joi.validate() with dataToValidate and schema as input parameters.

constructing a schema, our call to Joi.object(),.

What we are looking at above is us doing the following: