使用 Neo4j 和 Go 构建应用程序

package main

import (
    "fmt"
    "context"
    "github.com/neo4j/neo4j-go-driver/v6/neo4j"
)

func main() {
    ctx := context.Background()
    // URI examples: "neo4j://", "neo4j+s://xxx.databases.neo4j.io"
    dbUri := "<database-uri>"
    dbUser := "<username>"
    dbPassword := "<password>"
    driver, err := neo4j.NewDriver(
        dbUri,
        neo4j.BasicAuth(dbUser, dbPassword, ""))
    defer driver.Close(ctx)

    err = driver.VerifyConnectivity(ctx)
    if err != nil {
        panic(err)
    }
    fmt.Println("Connection established.")
}

result, err := neo4j.ExecuteQuery(ctx, driver, `
    CREATE (a:Person {name: $name})
    CREATE (b:Person {name: $friendName})
    CREATE (a)-[:KNOWS]->(b)
    `,
    map[string]any{
        "name": "Alice",
        "friendName": "David",
    }, neo4j.EagerResultTransformer,
    neo4j.ExecuteQueryWithDatabase("<database-name>"))
if err != nil {
    panic(err)
}

summary := result.Summary
fmt.Printf("Created %v nodes in %+v.\n",
    summary.Counters().NodesCreated(),
    summary.ResultAvailableAfter())

result, err := neo4j.ExecuteQuery(ctx, driver, `
    MATCH (p:Person)-[:KNOWS]->(:Person)
    RETURN p.name AS name
    `,
    nil,
    neo4j.EagerResultTransformer,
    neo4j.ExecuteQueryWithDatabase("<database-name>"))
if err != nil {
    panic(err)
}

// Loop through results and do something with them
for _, record := range result.Records {
    name, _ := record.Get("name")  // .Get() 2nd return is whether key is present
    fmt.Println(name)
    // or
    // fmt.Println(record.AsMap())  // get Record as a map
}

// Summary information
fmt.Printf("The query `%v` returned %v records in %+v.\n",
    result.Summary.Query().Text(), len(result.Records),
    result.Summary.ResultAvailableAfter())