package main
import (
"fmt"
"database/sql"
_"mysql"
)
type TestMysql struct {
db *sql.DB
}
/* 初始化数据库引擎 */
func Init() (*TestMysql,error){
test := new(TestMysql);
db,err := sql.Open("mysql","test:test@tcp(127.0.0.1:3306)/abwork?charset=utf8");
//第一个参数 : 数据库引擎
//第二个参数 : 数据库DSN配置。Go中没有统一DSN,都是数据库引擎自己定义的,因此不同引擎可能配置不同
//本次演示采用[url]http://code.google.com/p/go-mysql-driver[/url]
if err!=nil {
fmt.Println("database initialize error : ",err.Error());
return nil,err;
}
test.db = db;
return test,nil;
}
/* 测试数据库数据添加 */
func (test *TestMysql)Create(){
if test.db==nil {
return;
}
stmt,err := test.db.Prepare("insert into test(name,age)values(?,?)");
if err!=nil {
fmt.Println(err.Error());
return;
}
defer stmt.Close();
if result,err := stmt.Exec("张三",20);err==nil {
if id,err := result.LastInsertId();err==nil {
fmt.Println("insert id : ",id);
}
}
if result,err := stmt.Exec("李四",30);err==nil {
if id,err := result.LastInsertId();err==nil {
fmt.Println("insert id : ",id);
}
}
if result,err := stmt.Exec("王五",25);err==nil {
if id,err := result.LastInsertId();err==nil {
fmt.Println("insert id : ",id);
}
}
}
/* 测试数据库数据更新 */
func (test *TestMysql)Update(){
if test.db==nil {
return;
}
stmt,err := test.db.Prepare("update test set name=?,age=? where age=?");
if err!=nil {
fmt.Println(err.Error());
return;
}
defer stmt.Close();
if result,err := stmt.Exec("周七",40,25);err==nil {
if c,err := result.RowsAffected();err==nil {
fmt.Println("update count : ",c);
}
}
}
/* 测试数据库数据读取 */
func (test *TestMysql)Read(){
if test.db==nil {
return;
}
rows,err := test.db.Query("select id,name,age from test limit 0,5");
if err!=nil {
fmt.Println(err.Error());
return;
}
defer rows.Close();
fmt.Println("");
cols,_ := rows.Columns();
for i := range cols {
fmt.Print(cols[i]);
fmt.Print("\t");
}
fmt.Println("");
var id int;
var name string;
var age int;
for rows.Next(){
if err := rows.Scan(&id,&name,&age);err==nil {
fmt.Print(id);
fmt.Print("\t");
fmt.Print(name);
fmt.Print("\t");
fmt.Print(age);
fmt.Print("\t\r\n");
}
}
}
/* 测试数据库删除 */
func (test *TestMysql)Delete(){
if test.db==nil {
return;
}
stmt,err := test.db.Prepare("delete from test where age=?");
if err!=nil {
fmt.Println(err.Error());
return;
}
defer stmt.Close();
if result,err := stmt.Exec(20);err==nil {
if c,err := result.RowsAffected();err==nil{
fmt.Println("remove count : ",c);
}
}
}
func (test *TestMysql)Close(){
if test.db!=nil {
test.db.Close();
}
}
func main(){
if test,err := Init();err==nil {
test.Create();
test.Update();
test.Read();
test.Delete();
test.Read();
test.Close();
}
}
import (
"fmt"
"database/sql"
_"mysql"
)
type TestMysql struct {
db *sql.DB
}
/* 初始化数据库引擎 */
func Init() (*TestMysql,error){
test := new(TestMysql);
db,err := sql.Open("mysql","test:test@tcp(127.0.0.1:3306)/abwork?charset=utf8");
//第一个参数 : 数据库引擎
//第二个参数 : 数据库DSN配置。Go中没有统一DSN,都是数据库引擎自己定义的,因此不同引擎可能配置不同
//本次演示采用[url]http://code.google.com/p/go-mysql-driver[/url]
if err!=nil {
fmt.Println("database initialize error : ",err.Error());
return nil,err;
}
test.db = db;
return test,nil;
}
/* 测试数据库数据添加 */
func (test *TestMysql)Create(){
if test.db==nil {
return;
}
stmt,err := test.db.Prepare("insert into test(name,age)values(?,?)");
if err!=nil {
fmt.Println(err.Error());
return;
}
defer stmt.Close();
if result,err := stmt.Exec("张三",20);err==nil {
if id,err := result.LastInsertId();err==nil {
fmt.Println("insert id : ",id);
}
}
if result,err := stmt.Exec("李四",30);err==nil {
if id,err := result.LastInsertId();err==nil {
fmt.Println("insert id : ",id);
}
}
if result,err := stmt.Exec("王五",25);err==nil {
if id,err := result.LastInsertId();err==nil {
fmt.Println("insert id : ",id);
}
}
}
/* 测试数据库数据更新 */
func (test *TestMysql)Update(){
if test.db==nil {
return;
}
stmt,err := test.db.Prepare("update test set name=?,age=? where age=?");
if err!=nil {
fmt.Println(err.Error());
return;
}
defer stmt.Close();
if result,err := stmt.Exec("周七",40,25);err==nil {
if c,err := result.RowsAffected();err==nil {
fmt.Println("update count : ",c);
}
}
}
/* 测试数据库数据读取 */
func (test *TestMysql)Read(){
if test.db==nil {
return;
}
rows,err := test.db.Query("select id,name,age from test limit 0,5");
if err!=nil {
fmt.Println(err.Error());
return;
}
defer rows.Close();
fmt.Println("");
cols,_ := rows.Columns();
for i := range cols {
fmt.Print(cols[i]);
fmt.Print("\t");
}
fmt.Println("");
var id int;
var name string;
var age int;
for rows.Next(){
if err := rows.Scan(&id,&name,&age);err==nil {
fmt.Print(id);
fmt.Print("\t");
fmt.Print(name);
fmt.Print("\t");
fmt.Print(age);
fmt.Print("\t\r\n");
}
}
}
/* 测试数据库删除 */
func (test *TestMysql)Delete(){
if test.db==nil {
return;
}
stmt,err := test.db.Prepare("delete from test where age=?");
if err!=nil {
fmt.Println(err.Error());
return;
}
defer stmt.Close();
if result,err := stmt.Exec(20);err==nil {
if c,err := result.RowsAffected();err==nil{
fmt.Println("remove count : ",c);
}
}
}
func (test *TestMysql)Close(){
if test.db!=nil {
test.db.Close();
}
}
func main(){
if test,err := Init();err==nil {
test.Create();
test.Update();
test.Read();
test.Delete();
test.Read();
test.Close();
}
}
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