Spring Boot and GraphQL

This demo project demonstrates integration between Spring Boot and GraphQL. Integrating GraphQL with Spring Boot is straightforward. Spring Boot provides a range of tools and libraries for building GraphQL APIs.

How to integrate Spring Boot with GraphQL

To integrate GraphQL with Spring Boot, you can follow these general steps:

1. Define your GraphQL schema. Example is located in directory src/main/resources/graphql
2. Use the graphql-spring-boot-starter library to expose your GraphQL API over HTTP
3. Use the GraphQL UI (http://localhost:8080/graphiql) for exploring and testing GraphQL API

Examples from this demo

GraphQL schema is defined into file schema.graphqls located on src/main/resources/graphql. Developed endpoints are:

• Get all users
• Get user by unique identifier (id)
• Get page of users
• Create user
• Get all roles
• Get all departments

Example 1 (Get all users):

query {
    allUsers {
        id
        email
        age
        department {
            id
            name
        }
    }
}

Example 2 (Get page of users):

query {
  usersPage(page: 0, size: 10) {
    nodes {
      id
      email
      roles {
        name
      }
    }
    pageInfo {
      totalElements
      totalPages
    }
  }
}

Example 3 (Get all departments):

query {
    allDepartments {
        id
        name
    }
}

Example 4 (Create user):

mutation {
    createUser(user: {
        firstName: "Jack"
        lastName: "Sparow"
        email: "jack.sparow@test.com"
        age: 40
        department {
            id: 1
        }
        roles: [{
            id: 1
        }]
    }) {
        id
        email
        age
    }
}

Contribution/Suggestions

If someone is interested in contribution or have some suggestions please contact me on email hedzaprog@gmail.com.

Author

Heril Muratović
Software Engineer

Mobile/Viber/WhatsUp: +382 69 657 962
Email: hedzaprog@gmail.com
Skype: hedza06
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StackOverflow: https://stackoverflow.com/users/4078505/heril-muratovic