使用 neo4j-go-driver 连接从 db 获取数据时出错

Question

 if err != nil {

        logger.Log.Printf("DEBUG:1 GetStockComments : s%", err.Error())

        return []Comment{}, err

    }

    var records []Comment

    comment := Comment{}

    for result.Next() {

        record := result.Record()

        if value, ok := record.Get("c"); ok {

            node := value.(neo4j.Node)

            props := node.Props()

            err := mapstructure.Decode(props, &comment)

            if err != nil {

                logger.Log.Printf("DEBUG:2 GetStockComments : s%", err.Error())

                return []Comment{}, err

            }

            records = append(records, comment)

        }

    }

在 Session.run 上的某个时间，邮递员上未显示 result.Next() 错误，当我尝试使用代码按顺序运行 API 时，它会发生

runtime error: invalid memory address or nil pointer dereference

goroutine 122 [running]:

net/http.(*conn).serve.func1(0xc0002ba500)

        /usr/lib/go-1.13/src/net/http/server.go:1767 +0x139

panic(0x964400, 0xf64c70)

        /usr/lib/go-1.13/src/runtime/panic.go:679 +0x1b2

github.com/neo4j/neo4j-go-driver/neo4j.(*result).doFetch(0xc0001f7b00, 0x0)

        /root/go/pkg/mod/github.com/neo4j/neo4j-go-driver@v1.8.3/neo4j/result.go:73 +0x32

github.com/neo4j/neo4j-go-driver/neo4j.(*result).fetchAll(0xc0001f7b00)

        /root/go/pkg/mod/github.com/neo4j/neo4j-go-driver@v1.8.3/neo4j/result.go:134 +0x31

github.com/neo4j/neo4j-go-driver/neo4j.(*session).consumeCurrent(0xc00020e000, 0x1, 0x0)

        /root/go/pkg/mod/github.com/neo4j/neo4j-go-driver@v1.8.3/neo4j/session.go:433 +0x34

github.com/neo4j/neo4j-go-driver/neo4j.(*session).Run(0xc00020e000, 0xa1ec6a, 0x8b, 0xc000703860, 0x0, 0x0, 0x0, 0xc0002d6a80, 0x7f8ecca62008, 0x0, ...)

        /root/go/pkg/mod/github.com/neo4j/neo4j-go-driver@v1.8.3/neo4j/session.go:450 +0x4a

Answer 1

我已经解决了这个问题，我只是在项目启动时启动数据库会话，但我需要在每次查询运行时启动和关闭。这解决了我的问题，谢谢大家...