golang: 把sql结果集以json格式输出
发布时间:2020-12-16 18:27:33 所属栏目:大数据 来源:网络整理
导读:代码出处:http://stackoverflow.com/questions/19991541/dumping-mysql-tables-to-json-with-golang func getJSON(sqlString string) (string,error) {stmt,err := db.Prepare(sqlString)if err != nil {return nil,err}defer stmt.Close()rows,err := stmt
代码出处:http://stackoverflow.com/questions/19991541/dumping-mysql-tables-to-json-with-golang func getJSON(sqlString string) (string,error) { stmt,err := db.Prepare(sqlString) if err != nil { return nil,err } defer stmt.Close() rows,err := stmt.Query() if err != nil { return nil,err } defer rows.Close() columns,err := rows.Columns() if err != nil { return "",err } count := len(columns) tableData := make([]map[string]interface{},0) values := make([]interface{},count) valuePtrs := make([]interface{},count) for rows.Next() { for i := 0; i < count; i++ { valuePtrs[i] = &values[i] } rows.Scan(valuePtrs...) entry := make(map[string]interface{}) for i,col := range columns { var v interface{} val := values[i] b,ok := val.([]byte) if ok { v = string(b) } else { v = val } entry[col] = v } tableData = append(tableData,entry) } jsonData,err := json.Marshal(tableData) if err != nil { return "",err } fmt.Println(string(jsonData)) return string(jsonData),nil } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |