Vue Axios Cors Policy

Posted on  by admin

已阻止跨源请求:同源策略禁止读取位于*****的远程资源。(原因:CORS 头缺少 'Access-Control-Allow-Origin')。. 1问题答案 就是前端自己写的问题,后端遇到这种情况,反正我就不会多逼逼,直接改好发给前端就可以了.

I encountered this problem, too.devServer proxy not working. What should i do? vue.config.js exists in root dir of vue project.(same as package.json).

My vue project was created by Vue CLI v4.2.2. I tried changing the path of proxyi.g.“/api”“/api/”“^/api”“^/api/”“http:localhost:8080/api/”. I tried appending to more option in vue.config.js“changeOrigin” : true. “changeOrigin” : true. I tried appending to vue field in package.json instead of putting vue.config.jsbut this try had no effect, so I reverted.

but this try had no effect, so I reverted. I run npm run serve and execute axios.get method but the url cann’t change from http://loalhost:8080/api/foobarIf vue.config.js was loaded and the config success, the url should change http://loalhost:3000/api/foobarI checked this fact using on browser’s console. If vue.config.js was loaded and the config success, the url should change http://loalhost:3000/api/foobar.

I checked this fact using on browser’s console. In this tutorial, I will show you how to build a Vue 3 Typescript example to consume REST APIs with a CRUD application in that, you can display and modify data using Axios and Vue Router. More Practice: – Vue.js JWT Authentication with Vuex and Vue Router – Vue File Upload example using Axios. Fullstack: – Vue.js + Node.js + Express + MySQL example – Vue.js + Node.js + Express + PostgreSQL example – Vue.js + Node.js + Express + MongoDB example – Vue.js + Spring Boot + MySQL example – Vue.js + Spring Boot + PostgreSQL example – Vue.js + Spring Boot + MongoDB example – Vue.js + Django example.

Create Vue 3 Typescript Components.

Setup Vue 3 Typescript Project

We will build a Vue 3 Typescript with Axios called Tutorial Application in that:. Each Tutorial has id, title, description, published status.

We can create, retrieve, update, delete Tutorials. There is a Search bar for finding Tutorials by title. Here are screenshots of our Vue 3 Typescript CRUD Application. – Create a Tutorial:. – Retrieve all Tutorials:. – Click on Edit button to update a Tutorial:.

On this Page, you can:. change status to Published using Publish button. delete the Tutorial using Delete button. update the Tutorial details with Update button.

Create Vue 3 Typescript Components

  • – Search Tutorials by title:.
  • The introduction above is for Vue 3 Typescript Client with assumption that we have a Server exporting REST APIs:.
  • You can find step by step to build a Server like this in one of these posts: – Express, Sequelize & MySQL – Express, Sequelize & PostgreSQL – Express, Sequelize & SQL Server – Express & MongoDb – Spring Boot & MySQL – Spring Boot & PostgreSQL – Spring Boot & MongoDB – Spring Boot & SQL Server – Spring Boot & H2 – Spring Boot & Cassandra – Spring Boot & Oracle – Django & MySQL – Django & PostgreSQL – Django & MongoDB.

Create Response Data interface

All of them can work well with this Vue App.

– The App component is a container with router-view. It has navbar that links to routes paths. – TutorialsList component gets and displays Tutorials. – TutorialDetails component has form for editing Tutorial’s details based on :id. – AddTutorial component has form for submission new Tutorial. – These Components call TutorialDataService methods which use axios to make HTTP requests and receive responses. Let me explain it briefly. – package.json contains 4 main modules: vue, typescript, vue-router, axios, bootstrap.

– types/Tutorial.ts exports Tutorial interface. – There are 3 components: TutorialsList, TutorialDetails, AddTutorial.

Run Vue.js 3 Typescript example

– router.ts defines routes for each component. – http-common.ts initializes axios with HTTP base Url and headers.

– TutorialDataService has methods for sending HTTP requests to the Apis. – vue.config.js configures port for this Vue Client.

Open cmd at the folder you want to save Project folder, run command:vue create vue-3-typescript-example.

You will see some options, choose Manually select features.

Next, we choose the features needed for the project.

By default, we see Choose Vue version, Babel, and Linter / Formatter already selected.

We need TypeScript for this project, so just use the arrow keys to navigate down to the TypeScript option and hit the spacebar to select it.

Next, we select 3.x (Preview).

For the remaining configurations: – Use class-style component syntax?

No – Use Babel alongside TypeScript?

Yes – Pick a linter / formatter config: Prettier – Pick additional lint features: Lint on save – Where do you prefer placing config files?

In dedicated config files – Save this for future project?

After the process is done.

We create new folders and files like the following tree:.

AddTutorial.vue. TutorialDetails.vue. TutorialsList.vue. TutorialDataService.ts.

Further Reading

ResponseData.ts. Run command: npm install bootstrap jquery popper.js.

Open src/main.ts and import Bootstrap as following-. – Run the command: npm install [email protected].

– In src folder, create router.ts and define Router as following code:.

Configure Port for Vue 3 Typescript example

We create the routes as an array, each route has:. path: the URL path where this route can be found. name: optional name to use when we link to this route.

Project Structure

component: component to load when this route is called. We also use createWebHistory to switch from using hash to history mode inside the browser, using the HTML5 history API.

– Open src/main.ts and import the router in our application:. In shims-vue.d.ts, adjust your shim by adding following line like this:.

Now Vue will have a property of $router and Typescript won’t complain. Let’s open src/App.vue, this App component is the root container for our application, it will contain a navbar.

Source Code

Now we’re gonna install axios with command: npm install axios.

Then, under src folder, we create http-common.ts file like this:.

Add Vue Router to Vue 3 Typescript example

Remember to change the baseURL, it depends on REST APIs url that your Server configures.


For more details about ways to use Axios, please visit:Axios request: Get/Post/Put/Delete example. Our service will use axios from HTTP client above to send HTTP requests.

Open types/Tutorial.ts and define Tutorial interface:.

Vue.js 3 Component Diagram with Axios & Vue Router

Open types/ResponseData.ts and define ResponseData interface:.

  • getAll()
  • deleteAll()
  • findByTitle()

We want to use TypeScript, so we need to configure that by assigning ts to lang attribute of the