golang開發oracle利器godror
阿新 • • 發佈:2020-12-23
golang開發oracle利器godror
godror是golang中連線oracle進行程式開發的一個驅動庫,解決了長期以來go對oracle支援不友好的問題。github專案地址
簡單查詢示例:
將查詢結果轉換為json字串輸出
package main import ( "database/sql" "encoding/json" "fmt" _ "github.com/godror/godror" ) func main() { db, err := sql.Open("godror", `user="testq" password="123456" connectString="192.169.123.72:1521/orcl"`) if err != nil { panic(err) } err = db.Ping() if err != nil { panic(err) } //查詢 sqlStatement := "SELECT * FROM BAJG where ID = :1" stmt, err := db.Prepare(sqlStatement) defer stmt.Close() if err != nil { panic(err) } rows, err := stmt.Query("479") //輸入sql中對應引數的值 //defer rows.Close() if err != nil { panic(err) } //rows, _ := db.Query("SELECT * FROM BAJG") defer rows.Close() //defer關閉查詢連線 //獲取列相關資訊 strings, _ := rows.Columns() for i := 0; i < len(strings); i++ { fmt.Print(" ", strings[i]) } fmt.Print("\n") //構造切片儲存json var slice []map[string]interface{} var m1 map[string]interface{} m1 = make(map[string]interface{}) var ID, XM, SFZH, ZL, MJ string for rows.Next() { rows.Scan(&ID, &XM, &SFZH, &ZL, &MJ) //寫入查詢資料集的所有列名稱 fmt.Printf("username is %s, department is %s\n", XM, ZL) m1["ID"] = ID m1["XM"] = XM m1["SFZH"] = SFZH m1["ZL"] = ZL m1["MJ"] = MJ slice = append(slice, m1) //分片中追加資訊 } if err = rows.Err(); err != nil { // handle the error here } defer stmt.Close() data, err := json.Marshal(slice) if err != nil { fmt.Printf("序列化錯誤 err = %v\n", err) } //輸出序列化後的結果 json字串 fmt.Printf("slice 序列化後 = %v\n", string(data)) fmt.Printf("ok") }
儲存過程呼叫:
var po_out, po_fhz, po_msg string //儲存過程輸出引數 var loginid2, password2, gmsfhm string //儲存過程輸入引數 loginid2 = "aaa" password2 = "aaa123" gmsfhm = b.SFZH //"41234567890000000" query := `BEGIN pro.abcproduce(:1,:2,:3,:4,:5,:6); END;` ctx, _ := context.WithTimeout(context.Background(), 10*time.Second) //ctx, _ := context.WithCancel(context.Background()) if _, err := db.ExecContext(ctx, query, loginid2, password2, gmsfhm, sql.Out{Dest: &po_out}, sql.Out{Dest: &po_fhz}, sql.Out{Dest: &po_msg}); err != nil { log.Printf("Error running %q: %+v", query, err) panic(err) //return }
呼叫完成後,可以在輸出引數中獲取儲存過程執行後的輸出值。