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2018-07-23 golang学习笔记

2018-07-23 golang学习笔记

作者: phu | 来源:发表于2018-07-23 20:30 被阅读0次

    1.心跳包:发送心跳包是为了不断监听和发送达到长连接的效果

    2.处理 连接 mysql和sqlite

    3.KCP去这里下载kcp-go

    4.protoc.exe 去这里下载protoc-3.6.0-win32.zip

    5.bat正则表达式 前面加个 REM 表示接下来才是正则匹配

    @echo off

    echo 正在生成Go代码...

    REM protoc -I=./ --go_out=../PB/  .\messageid.proto

    pause


    处理 连接 mysql和sqlite


    package ConnTest

    import (

    "database/sql"

    "fmt"

      _"github.com/go-sql-driver/mysql"

      _"github.com/mattn/go-sqlite3"

    "os"

    "testing"

    )

    func TestMysqlConn(t *testing.T) {

    db, err := sql.Open("mysql", "root:huhao123@tcp(127.0.0.1:3306)/game?charset=utf8")

    if err != nil {

    fmt.Println(err)

    return

      }

    defer db.Close()

    var result sql.Result

    result, err = db.Exec("insert into user_table(user_id, name,password) values(?,?,?)", 1234, "huhaos", "huhao123")

    if err != nil {

    fmt.Println(err)

    return

      }

    lastId, _ := result.LastInsertId()

    fmt.Println("新插入记录的ID为", lastId)

    var row *sql.Row

    row = db.QueryRow("select * from  user_table")

    var name, passwordstring

      var user_idint

      err = row.Scan(&user_id, &password, &name)

    if err != nil {

    fmt.Println(err)

    return

      }

    fmt.Println(user_id, "\t", name, "\t", password)

    result, err = db.Exec("insert into user_table(user_id,name,password) values(?,?,?)", 4444, "black", "huhao123456")

    var rows *sql.Rows

    rows, err = db.Query("select * from user_table")

    if err != nil {

    fmt.Println(err)

    return

      }

    for rows.Next() {

    var name, passwordstring

          var user_idint

          rows.Scan(&user_id, &name, &password)

    fmt.Println(user_id, "\t", name, "\t", password)

    }

    rows.Close()

    db.Exec("truncate table user")

    }

    func TestSqLiteConn(t *testing.T) {

    DBConnector, err := sql.Open("sqlite3", "./../DB/sqllite.db")

    if err != nil || DBConnector == nil {

    fmt.Printf("连接失败")

    os.Exit(1)

    }

    DBConnector.SetMaxOpenConns(16)

    DBConnector.SetMaxIdleConns(8)

    p := DBConnector.Ping()

    fmt.Printf("连接成功 %v", p)

    sqlstring :=string("replace into user_table(user_id,name,password) values (?,?,?)")

    stmt, err__ := DBConnector.Prepare(sqlstring)

    defer stmt.Close()

    if err__ != nil {

    fmt.Println("create err ", err__)

    return

      }

    result, err := stmt.Exec(

    33334,

          "huhao",

          "huhao123",

      )

    if err != nil {

    fmt.Println("create err ", err)

    }

    effectRow, err := result.RowsAffected()

    if err != nil {

    fmt.Println("create err ", err)

    }

    fmt.Println("create effect rows:", effectRow)

    }

    func TestRedisConn(t *testing.T) {

    }

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