1,golang 连接 oracle 数据库文章来源:https://www.toymoban.com/news/detail-698759.html
2,增删改查文章来源地址https://www.toymoban.com/news/detail-698759.html
/*
* @Author: lmy
* @Date: 2023-08-24 15:19:22
* @LastEditors: lmy
* @LastEditTime: 2023-08-24 16:23:58
* @FilePath: \golangOracleDemo\main.go
* @Description: golang oracle 增删改查 DEMO
*/
package main
import (
"database/sql"
"fmt"
"strings"
"time"
go_ora "github.com/sijms/go-ora/v2"
)
var oracleDB *sql.DB //oracleDB oracle数据库
func main() {
var err error
// 演示的数据库表DDL
// CREATE TABLE "SYSTEM"."TABLE1"
// ( "ID" NUMBER(*,0) GENERATED ALWAYS AS IDENTITY MINVALUE 1 MAXVALUE 9999999999999999999999999999 INCREMENT BY 1 START WITH 1 CACHE 20 NOORDER NOCYCLE NOKEEP NOSCALE NOT NULL ENABLE,
// "NAME" VARCHAR2(20 BYTE),
// "AGE" NUMBER(*,0),
// "PHONE" VARCHAR2(11 BYTE),
// "BIRTHDAY" DATE
// ) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255
// NOCOMPRESS LOGGING
// STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
// PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
// BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
// TABLESPACE "SYSTEM" ;
// 传入数据库连接字符串
// username/password@host:port/service_name
//system:123456@192.168.168.152:1521/orcl.docker.internal
//system:123456@192.168.168.152:1521/?SID=orcl
port := 1521 // 端口
server := "192.168.168.152" // Host
serviceName := "orcl.docker.internal" // 连接名|服务名
username := "system" // 用户名
password := "123456" // 密码
sid := "orcl" // SID
connStr := ""
//连接数据库的方式
//方法1:简单连接
connStr = go_ora.BuildUrl(server, port, serviceName, username, password, nil)
fmt.Println("数据库链接1=>", connStr)
//方法2:使用SID连接
urlOptions := map[string]string{
"SID": sid,
}
connStr = go_ora.BuildUrl(server, port, "", username, password, urlOptions)
fmt.Println("数据库链接2=>", connStr)
oracleDB, err = CreateOracleSQLConnV2(connStr)
if err != nil {
fmt.Printf("连接数据库失败:%v \n", err)
return
}
// 设置数据库链接 | 要数据库连链接创建成功 才能走下面的流程
//增
var info TableInfo
info.Name = "小明"
info.Age = 11
info.Birthday, _ = time.Parse("2006-01-02", "2012-08-08")
if isOK, _ := addTableInfo(info); isOK {
fmt.Println("新增数据成功", info)
} else {
fmt.Println("新增数据失败", info)
}
//增
info.Name = "大明"
info.Age = 19
var timeZero time.Time
info.Birthday = timeZero
//info.Birthday, _ = time.Parse("2006-01-02", "2004-09-08")
isOK, err := addTableInfo(info)
if err != nil {
fmt.Println("新增数据异常", info, err)
} else {
if isOK {
fmt.Println("新增数据成功", info)
} else {
fmt.Println("新增数据失败", info)
}
}
//根据名称和年龄搜查询单条数据
info, err = sqlGetOneTableDataInfo("明", 18)
if err != nil {
fmt.Printf("根据ID查询单条数据失败:%v \n", err)
return
}
fmt.Println("根据名称和年龄搜查询单条数据", info)
//查询所有数据
datas, err := sqlGetAllTableDataInfo()
if err != nil {
fmt.Printf("查询所有数据失败:%v \n", err)
return
}
fmt.Println("查询所有数据=>", datas)
info.Name = "老明"
info.Age = 20
info.Birthday, _ = time.Parse("2006-01-02", "2003-05-06")
//改
if isOK := editTableInfo(info); isOK {
fmt.Println("编辑数据成功", info)
} else {
fmt.Println("编辑数据失败", info)
}
//查询所有数据
datas, err = sqlGetAllTableDataInfo()
if err != nil {
fmt.Printf("查询所有数据失败:%v", err)
return
}
fmt.Println("查询所有数据=>", datas)
fmt.Println("删除数据=>", info.ID)
// 删除
deleteTableInfoByID(info.ID)
fmt.Println()
//查询所有数据
datas, err = sqlGetAllTableDataInfo()
if err != nil {
fmt.Printf("查询所有数据失败:%v", err)
return
}
fmt.Println("查询所有数据=>", datas)
//删除所有数据
deleteTableInfo()
fmt.Println("删除表所有数据")
//查询所有数据
datas, err = sqlGetAllTableDataInfo()
if err != nil {
fmt.Printf("查询所有数据失败:%v", err)
return
}
fmt.Println("查询所有数据=>", datas)
}
// 添加表数据
func addTableInfo(info TableInfo) (bool, error) {
affect, err := ExecSQL(oracleDB, "INSERT INTO TABLE1( NAME,AGE,BIRTHDAY) VALUES(:name, :age,:brithday)", info.Name, info.Age, info.Birthday)
if err != nil {
fmt.Printf("添加数据失败:%v", err)
return false, err
}
return affect > 0, nil
}
// 编辑表数据
func editTableInfo(info TableInfo) bool {
affect, err := ExecSQL(oracleDB, "UPDATE TABLE1 SET NAME=:name,AGE=:age,BIRTHDAY=:brithday WHERE ID=:ID", info.Name, info.Age, info.Birthday, info.ID)
if err != nil {
fmt.Printf("修改数据失败:%v", err)
return false
}
return affect > 0
}
// 根据ID删除表数据
func deleteTableInfoByID(id int) bool {
affect, err := ExecSQL(oracleDB, "DELETE TABLE1 where ID = :id", id)
if err != nil {
fmt.Printf("根据ID删除数据失败:id:%v,%v", id, err)
return false
}
return affect > 0
}
// 删除表所有数据
func deleteTableInfo() bool {
affect, err := ExecSQL(oracleDB, "DELETE TABLE1 ")
if err != nil {
fmt.Printf("删除所有数据失败:%v", err)
return false
}
return affect > 0
}
// 表数据结构体
type TableInfo struct {
ID int //id,--ID
Name string //NAME,--名称
Age int //AGE,--年纪
Birthday time.Time //BIRTHDAY,--生日
}
// 根据ID查询单条数据
func sqlGetOneTableDataInfo(name string, age int) (TableInfo, error) {
//根据id查询名称
var info TableInfo
sqlStr := `select ID, nvl(NAME,' ') NAME, nvl(AGE,0) AGE, nvl(BIRTHDAY,'') BIRTHDAY from TABLE1 where NAME LIKE :name AND AGE >= :p2 `
err := oracleDB.QueryRow(sqlStr, "%"+name+"%", age).Scan(&info.ID, &info.Name, &info.Age, &info.Birthday)
if err != nil {
if err == sql.ErrNoRows { // 属于空查找
fmt.Printf("查询 数据失败--没有符合条件的数据: \n ")
}
fmt.Printf("查询 数据失败: \nid=%v \nerr=%s", info.ID, err)
return info, err
}
return info, err
}
// 查询所有数据
func sqlGetAllTableDataInfo() ([]TableInfo, error) {
var data []TableInfo
rows, err := oracleDB.Query("SELECT ID, NAME,AGE,BIRTHDAY FROM TABLE1")
if err != nil {
fmt.Printf("查询数据失败:%v \n", err)
return data, err
}
defer rows.Close()
var info TableInfo
for rows.Next() { // 游标读取
info = TableInfo{}
err = rows.Scan(&info.ID, &info.Name, &info.Age, &info.Birthday)
if err != nil {
fmt.Printf("查询数据失败:%v \n", err)
} else {
data = append(data, info)
}
}
return data, nil
}
/*
ExecSQL 通用语句
参数:
1. *sql.DB
2. SQL语句 例子:UPDATE WX_USER_INFO SET wui_status = 20 WHERE wui_openid = :openid
例子:INSERT INTO dbo.ALL_WEIXIN_MSG_LOG (awml_wxid,awml_send_openid,awml_msg_from,awml_msg_body,awml_addtime) VALUES(:wxid,:openid,:msgform,:msgbody,GETDATE())
3. SQL语句参数参数 os7Cm1EygxiRF3Tox6FM1z11HiMc ,.........
返回受影响行数affect和错误提示消息err
*/
func ExecSQL(sqlBasis *sql.DB, sqlStr string, args ...interface{}) (int64, error) {
affect := int64(-1)
var result sql.Result
var err error
result, err = sqlBasis.Exec(sqlStr, args...)
if err == nil {
affect, _ = result.RowsAffected()
}
if affect == -1 { //执行失败
err = fmt.Errorf("execSQLStr Err:%s\nsql:%s\ndata:%s", err, sqlStr, fmt.Sprintln(args...))
}
return affect, err
}
/*
CreateOracleSQLConnV2 用于创建数据库链接
*/
func CreateOracleSQLConnV2(dbconfigdatastr string) (*sql.DB, error) {
// 建立 Oracle
sqldbdata, err := sql.Open("oracle", dbconfigdatastr)
if err != nil {
fmt.Printf("sql application pool:%s\n", err)
return nil, err
}
// 测试创建链接是否成功
err = sqldbdata.Ping()
dbName := strings.Split(dbconfigdatastr, "/")[2]
if err != nil {
fmt.Printf("%s DB Ping err : %s\n", dbName, err)
defer sqldbdata.Close()
} else {
fmt.Printf("The Sql link is successful - %s. \n", dbName)
}
return sqldbdata, err
}
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