golang 连接 oracle 数据库 增删改查

 1，golang 连接 oracle 数据库

 2，增删改查

/** @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 mainimport ("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=orclport := 1521                          // 端口server := "192.168.168.152"           // HostserviceName := "orcl.docker.internal" // 连接名|服务名username := "system"                  // 用户名password := "123456"                  // 密码sid := "orcl"                         // SIDconnStr := ""//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 TableInfoinfo.Name = "小明"info.Age = 11info.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 = 19var timeZero time.Timeinfo.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 = 20info.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,--IDName     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 TableInfosqlStr := `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 []TableInforows, 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 TableInfofor 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.DB2. 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.Resultvar err errorresult, 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 Oraclesqldbdata, 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
}