db query

.gitignore

@@ -1,2 +1,3 @@
 .idea
 wp-go.iml
+config.yaml

config.example.yaml

@@ -0,0 +1,17 @@
+mysql:
+  dsn:
+    host: localhost
+    port: 3306
+    db: wordpress
+    user: root
+    password: root
+    charset: utf8mb4
+  pool:
+    # 最长空闲时间
+    connMaxIdleTime: 60
+    # 最大连接数
+    maxOpenConn: 100
+    # 最大空闲连接数
+    maxIdleConn: 10
+    # 连接的生命时长
+    connMaxLifetime: 236

db/db.go

@@ -0,0 +1,31 @@
+package db
+
+import (
+	_ "github.com/go-sql-driver/mysql"
+	"github.com/jmoiron/sqlx"
+	"github/fthvgb1/wp-go/vars"
+)
+
+var Db *sqlx.DB
+
+func InitDb() error {
+	dsn := vars.Conf.Mysql.Dsn.GetDsn()
+	var err error
+	Db, err = sqlx.Open("mysql", dsn)
+	if err != nil {
+		return err
+	}
+	if vars.Conf.Mysql.Pool.ConnMaxIdleTime != 0 {
+		Db.SetConnMaxIdleTime(vars.Conf.Mysql.Pool.ConnMaxLifetime)
+	}
+	if vars.Conf.Mysql.Pool.MaxIdleConn != 0 {
+		Db.SetMaxIdleConns(vars.Conf.Mysql.Pool.MaxIdleConn)
+	}
+	if vars.Conf.Mysql.Pool.MaxOpenConn != 0 {
+		Db.SetMaxOpenConns(vars.Conf.Mysql.Pool.MaxOpenConn)
+	}
+	if vars.Conf.Mysql.Pool.ConnMaxLifetime != 0 {
+		Db.SetConnMaxLifetime(vars.Conf.Mysql.Pool.ConnMaxLifetime)
+	}
+	return err
+}

go.mod

@@ -1,3 +1,15 @@
 module github/fthvgb1/wp-go
 
 go 1.18
+
+require (
+	github.com/go-sql-driver/mysql v1.6.0
+	github.com/jmoiron/sqlx v1.3.5
+	gopkg.in/yaml.v2 v2.4.0
+)
+
+require (
+	github.com/kr/pretty v0.3.0 // indirect
+	github.com/rogpeppe/go-internal v1.8.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
+)

main.go

@@ -1,7 +1,27 @@
 package main
 
-import "fmt"
+import (
+	"fmt"
+	"github/fthvgb1/wp-go/db"
+	"github/fthvgb1/wp-go/models"
+	"github/fthvgb1/wp-go/vars"
+)
+
+func init() {
+	err := vars.InitDbConfig()
+	if err != nil {
+		panic(err)
+	}
+	err = db.InitDb()
+	if err != nil {
+		panic(err)
+	}
+}
 
 func main() {
-	fmt.Println("Hello, World!")
+	T, err := models.WpPostsM.FindOneById(3)
+	if err != nil {
+		return
+	}
+	fmt.Println(T)
 }

models/model.go

@@ -0,0 +1,95 @@
+package models
+
+import (
+	"fmt"
+	"github/fthvgb1/wp-go/db"
+	"strings"
+)
+
+type mod interface {
+	PrimaryKey() string
+	Table() string
+}
+
+type model[T mod] struct {
+}
+
+type SimpleWhere [][]string
+
+func (w SimpleWhere) parseWhere() (string, []interface{}) {
+	var s strings.Builder
+	args := make([]interface{}, 0, len(w))
+	for _, ss := range w {
+		if len(ss) == 2 {
+			s.WriteString("`")
+			s.WriteString(ss[0])
+			s.WriteString("`=? and ")
+			args = append(args, ss[1])
+		}
+		if len(ss) == 3 {
+			s.WriteString("`")
+			s.WriteString(ss[0])
+			s.WriteString("`")
+			s.WriteString(ss[1])
+			s.WriteString("? and ")
+			args = append(args, ss[2])
+		}
+	}
+	return strings.TrimRight(s.String(), "and "), args
+}
+
+func (m model[T]) FindOneById(id int) (T, error) {
+	var r T
+	sql := fmt.Sprintf("select * from `%s` where `%s`=?", r.Table(), r.PrimaryKey())
+	err := db.Db.Get(&r, sql, id)
+	if err != nil {
+		return r, err
+	}
+	return r, nil
+}
+
+func (m model[T]) FirstOne(where SimpleWhere, fields string) (T, error) {
+	var r T
+	w, args := where.parseWhere()
+	tp := "select %s from %s where %s"
+	sql := fmt.Sprintf(tp, fields, r.Table(), w)
+	err := db.Db.Get(&r, sql, args...)
+	if err != nil {
+		return r, err
+	}
+	return r, nil
+}
+
+func (m model[T]) FindMany(where SimpleWhere, fields string) ([]T, error) {
+	var r []T
+	var rr T
+	w, args := where.parseWhere()
+	tp := "select %s from %s where %s"
+	sql := fmt.Sprintf(tp, fields, rr.Table(), w)
+	err := db.Db.Select(&r, sql, args...)
+	if err != nil {
+		return r, err
+	}
+	return r, nil
+}
+
+func (m model[T]) Get(sql string, params ...interface{}) (T, error) {
+	var r T
+	sql = strings.Replace(sql, "%table%", r.Table(), -1)
+	err := db.Db.Get(&r, sql, params...)
+	if err != nil {
+		return r, err
+	}
+	return r, nil
+}
+
+func (m model[T]) Select(sql string, params ...interface{}) ([]T, error) {
+	var r []T
+	var rr T
+	sql = strings.Replace(sql, "%table%", rr.Table(), -1)
+	err := db.Db.Select(&r, sql, params...)
+	if err != nil {
+		return r, err
+	}
+	return r, nil
+}

models/wp_comments.go

@@ -0,0 +1,32 @@
+package models
+
+import "time"
+
+var WpCommentsM = WpComments{}
+
+type WpComments struct {
+	model[WpComments]
+	CommentId          uint64    `gorm:"column:comment_ID" db:"comment_ID" json:"comment_ID" form:"comment_ID"`
+	CommentPostId      uint64    `gorm:"column:comment_post_ID" db:"comment_post_ID" json:"comment_post_ID" form:"comment_post_ID"`
+	CommentAuthor      string    `gorm:"column:comment_author" db:"comment_author" json:"comment_author" form:"comment_author"`
+	CommentAuthorEmail string    `gorm:"column:comment_author_email" db:"comment_author_email" json:"comment_author_email" form:"comment_author_email"`
+	CommentAuthorUrl   string    `gorm:"column:comment_author_url" db:"comment_author_url" json:"comment_author_url" form:"comment_author_url"`
+	CommentAuthorIp    string    `gorm:"column:comment_author_IP" db:"comment_author_IP" json:"comment_author_IP" form:"comment_author_IP"`
+	CommentDate        time.Time `gorm:"column:comment_date" db:"comment_date" json:"comment_date" form:"comment_date"`
+	CommentDateGmt     time.Time `gorm:"column:comment_date_gmt" db:"comment_date_gmt" json:"comment_date_gmt" form:"comment_date_gmt"`
+	CommentContent     string    `gorm:"column:comment_content" db:"comment_content" json:"comment_content" form:"comment_content"`
+	CommentKarma       int       `gorm:"column:comment_karma" db:"comment_karma" json:"comment_karma" form:"comment_karma"`
+	CommentApproved    string    `gorm:"column:comment_approved" db:"comment_approved" json:"comment_approved" form:"comment_approved"`
+	CommentAgent       string    `gorm:"column:comment_agent" db:"comment_agent" json:"comment_agent" form:"comment_agent"`
+	CommentType        string    `gorm:"column:comment_type" db:"comment_type" json:"comment_type" form:"comment_type"`
+	CommentParent      uint64    `gorm:"column:comment_parent" db:"comment_parent" json:"comment_parent" form:"comment_parent"`
+	UserId             uint64    `gorm:"column:user_id" db:"user_id" json:"user_id" form:"user_id"`
+}
+
+func (w WpComments) PrimaryKey() string {
+	return "comment_ID"
+}
+
+func (w WpComments) Table() string {
+	return "wp_comments"
+}

models/wp_options.go

@@ -0,0 +1,19 @@
+package models
+
+var WpOptionsM = WpOptions{}
+
+type WpOptions struct {
+	model[WpOptions]
+	OptionId    uint64 `gorm:"column:option_id" db:"option_id" json:"option_id" form:"option_id"`
+	OptionName  string `gorm:"column:option_name" db:"option_name" json:"option_name" form:"option_name"`
+	OptionValue string `gorm:"column:option_value" db:"option_value" json:"option_value" form:"option_value"`
+	Autoload    string `gorm:"column:autoload" db:"autoload" json:"autoload" form:"autoload"`
+}
+
+func (w WpOptions) PrimaryKey() string {
+	return "option_id"
+}
+
+func (w WpOptions) Table() string {
+	return "wp_options"
+}

models/wp_posts.go

@@ -0,0 +1,40 @@
+package models
+
+import "time"
+
+var WpPostsM = WpPosts{}
+
+type WpPosts struct {
+	model[WpPosts]
+	Id                  uint64    `gorm:"column:ID" db:"ID" json:"ID" form:"ID"`
+	PostAuthor          uint64    `gorm:"column:post_author" db:"post_author" json:"post_author" form:"post_author"`
+	PostDate            time.Time `gorm:"column:post_date" db:"post_date" json:"post_date" form:"post_date"`
+	PostDateGmt         time.Time `gorm:"column:post_date_gmt" db:"post_date_gmt" json:"post_date_gmt" form:"post_date_gmt"`
+	PostContent         string    `gorm:"column:post_content" db:"post_content" json:"post_content" form:"post_content"`
+	PostTitle           string    `gorm:"column:post_title" db:"post_title" json:"post_title" form:"post_title"`
+	PostExcerpt         string    `gorm:"column:post_excerpt" db:"post_excerpt" json:"post_excerpt" form:"post_excerpt"`
+	PostStatus          string    `gorm:"column:post_status" db:"post_status" json:"post_status" form:"post_status"`
+	CommentStatus       string    `gorm:"column:comment_status" db:"comment_status" json:"comment_status" form:"comment_status"`
+	PingStatus          string    `gorm:"column:ping_status" db:"ping_status" json:"ping_status" form:"ping_status"`
+	PostPassword        string    `gorm:"column:post_password" db:"post_password" json:"post_password" form:"post_password"`
+	PostName            string    `gorm:"column:post_name" db:"post_name" json:"post_name" form:"post_name"`
+	ToPing              string    `gorm:"column:to_ping" db:"to_ping" json:"to_ping" form:"to_ping"`
+	Pinged              string    `gorm:"column:pinged" db:"pinged" json:"pinged" form:"pinged"`
+	PostModified        time.Time `gorm:"column:post_modified" db:"post_modified" json:"post_modified" form:"post_modified"`
+	PostModifiedGmt     time.Time `gorm:"column:post_modified_gmt" db:"post_modified_gmt" json:"post_modified_gmt" form:"post_modified_gmt"`
+	PostContentFiltered string    `gorm:"column:post_content_filtered" db:"post_content_filtered" json:"post_content_filtered" form:"post_content_filtered"`
+	PostParent          uint64    `gorm:"column:post_parent" db:"post_parent" json:"post_parent" form:"post_parent"`
+	Guid                string    `gorm:"column:guid" db:"guid" json:"guid" form:"guid"`
+	MenuOrder           int       `gorm:"column:menu_order" db:"menu_order" json:"menu_order" form:"menu_order"`
+	PostType            string    `gorm:"column:post_type" db:"post_type" json:"post_type" form:"post_type"`
+	PostMimeType        string    `gorm:"column:post_mime_type" db:"post_mime_type" json:"post_mime_type" form:"post_mime_type"`
+	CommentCount        int64     `gorm:"column:comment_count" db:"comment_count" json:"comment_count" form:"comment_count"`
+}
+
+func (w WpPosts) PrimaryKey() string {
+	return "ID"
+}
+
+func (w WpPosts) Table() string {
+	return "wp_posts"
+}

models/wp_term_taxonomy.go

@@ -0,0 +1,21 @@
+package models
+
+var WpTermTaxonomyM = WpTermTaxonomy{}
+
+type WpTermTaxonomy struct {
+	model[WpTermTaxonomy]
+	TermTaxonomyId uint64 `gorm:"column:term_taxonomy_id" db:"term_taxonomy_id" json:"term_taxonomy_id" form:"term_taxonomy_id"`
+	TermId         uint64 `gorm:"column:term_id" db:"term_id" json:"term_id" form:"term_id"`
+	Taxonomy       string `gorm:"column:taxonomy" db:"taxonomy" json:"taxonomy" form:"taxonomy"`
+	Description    string `gorm:"column:description" db:"description" json:"description" form:"description"`
+	Parent         uint64 `gorm:"column:parent" db:"parent" json:"parent" form:"parent"`
+	Count          int64  `gorm:"column:count" db:"count" json:"count" form:"count"`
+}
+
+func (w WpTermTaxonomy) PrimaryKey() string {
+	return "term_taxonomy_id"
+}
+
+func (w WpTermTaxonomy) Table() string {
+	return "wp_term_taxonomy"
+}

models/wp_terms.go

@@ -0,0 +1,18 @@
+package models
+
+var WpTermsM = WpTerms{}
+
+type WpTerms struct {
+	model[WpTerms]
+	TermId    uint64 `gorm:"column:term_id" db:"term_id" json:"term_id" form:"term_id"`
+	Name      string `gorm:"column:name" db:"name" json:"name" form:"name"`
+	Slug      string `gorm:"column:slug" db:"slug" json:"slug" form:"slug"`
+	TermGroup int64  `gorm:"column:term_group" db:"term_group" json:"term_group" form:"term_group"`
+}
+
+func (t WpTerms) PrimaryKey() string {
+	return "term_id"
+}
+func (t WpTerms) Table() string {
+	return "wp_terms"
+}

vars/dbconfig.go

@@ -0,0 +1,55 @@
+package vars
+
+import (
+	"fmt"
+	"gopkg.in/yaml.v2"
+	"io/ioutil"
+	"time"
+)
+
+var Conf Config
+
+type Config struct {
+	Mysql Mysql `yaml:"mysql"`
+}
+
+type Mysql struct {
+	Dsn  Dsn  `yaml:"dsn"`
+	Pool Pool `yaml:"pool"`
+}
+
+func InitDbConfig() error {
+	file, err := ioutil.ReadFile("config.yaml")
+	if err != nil {
+		return err
+	}
+	err = yaml.Unmarshal(file, &Conf)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+type Dsn struct {
+	Host     string `yaml:"host"`
+	Port     string `yaml:"port"`
+	Db       string `yaml:"db"`
+	User     string `yaml:"user"`
+	Password string `yaml:"password"`
+	Charset  string `yaml:"charset"`
+}
+
+func (m *Dsn) GetDsn() string {
+	if m.Charset == "" {
+		m.Charset = "utf8"
+	}
+	t := "%s:%s@tcp(%s:%s)/%s?charset=%s&parseTime=True&loc=Local"
+	return fmt.Sprintf(t, m.User, m.Password, m.Host, m.Port, m.Db, m.Charset)
+}
+
+type Pool struct {
+	ConnMaxIdleTime time.Duration `yaml:"connMaxIdleTime"`
+	MaxOpenConn     int           `yaml:"maxOpenConn"`
+	MaxIdleConn     int           `yaml:"maxIdleConn"`
+	ConnMaxLifetime time.Duration `yaml:"connMaxLifetime"`
+}