no message

.vscode/launch.json

+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Launch Package",
+            "type": "go",
+            "request": "launch",
+            "mode": "auto",
+            "program": "${fileDirname}/main.go"
+        }
+    ]
+}
\ No newline at end of file

.vscode/settings.json

+{
+    "go.inferGopath": false
+}
\ No newline at end of file

go.mod

+module gaoqiaoCJY
+
+go 1.16
+
+require (
+	github.com/gin-gonic/gin v1.8.1 // indirect
+	go.mongodb.org/mongo-driver v1.11.0 // indirect
+)

go.sum

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main.go

+package main
+
+import (
+	"fmt"
+	"gaoqiaoCJY/src/db"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"go.mongodb.org/mongo-driver/bson"
+)
+
+func exitProcess() {
+	fmt.Println("等待进程完成")
+	db.Exit_DB()
+	fmt.Println("进程退出")
+	os.Exit(-1)
+}
+
+func main() {
+	signals := make(chan os.Signal, 4)
+	done := make(chan bool, 1)
+
+	signal.Notify(signals, syscall.SIGILL, syscall.SIGTERM, syscall.SIGQUIT, syscall.SIGINT)
+
+	go func() {
+		for signal := range signals {
+			switch signal {
+			case syscall.SIGTERM, syscall.SIGQUIT, syscall.SIGINT:
+				fmt.Println("kill -15 进程退出")
+				exitProcess()
+			case syscall.SIGILL:
+				fmt.Println("kill -4")
+			}
+		}
+		done <- true
+	}()
+
+	defer func() {
+		db.Exit_DB()
+	}()
+
+	fmt.Println("\r\n===============读取创业能力题库=================")
+	e := &db.Entrepreneurship{}
+	filter0 := bson.M{"id": 100}
+	entrepreneurships := []db.Entrepreneurship{}
+	err := e.GetList(filter0, entrepreneurships)
+	if err == nil {
+		for _, v := range entrepreneurships {
+			fmt.Println(v)
+		}
+	}
+
+	fmt.Println("\r\n===============读取创业能力题库=================")
+}

src/biz/api.go

+package biz
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+type Login struct {
+	User string
+}
+
+func Api1Handler(c *gin.Context) {
+	fmt.Println(c.Query("key"))
+
+	body := Login{}
+	err := c.ShouldBindJSON(&body)
+	if err != nil {
+		fmt.Println(err)
+	}
+	fmt.Println(body.User)
+	c.JSON(200, gin.H{
+		"message": time.Now().UnixNano() / 1e9,
+	})
+}

src/console/console.go

+package console
+
+import "fmt"
+
+func Log(a ...interface{}) (n int, err error) {
+	return fmt.Println(a...)
+}

src/db/db.go

+package db
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log"
+	"sync"
+	"time"
+
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
+	"go.mongodb.org/mongo-driver/mongo/readpref"
+)
+
+type Table_interface interface {
+	GetList(filter interface{}, objs interface{}) error
+	AddOne() (*mongo.InsertOneResult, error)
+	EditOne(filter interface{}) error
+	Update(filter interface{}) error
+	Del(filter interface{}) (*mongo.DeleteResult, error)
+	DelAll(filter interface{}) (*mongo.DeleteResult, error)
+	DelTable() error
+	Sectle(filter interface{}, objs interface{}) error
+	Count(filter interface{}) (int, error)
+	GetOne(filter interface{}) error
+}
+
+type Objs interface {
+}
+
+var (
+	url                         = "mongodb://root:root@127.0.0.1:27017" //  带账号名的链接
+	DB_NAME                     = "gaoqiaoDB"                           // 数据库名
+	maxTime                     = time.Duration(5)                      // 链接超时时间
+	DB_CLIENT_MAX_NUM    uint64 = 100                                   // 链接数
+	ENTREPRENEURSHIP_TBL        = "entrepreneurship_tbl"                // 创业能力测评题库表名
+	db_mutex             sync.Mutex
+	db_ready             = false
+	toDB                 *mongo.Database              // database 话柄
+	collection_map       map[string]*mongo.Collection // collection 话柄
+)
+
+/*
+func (o Level) TableName() string {
+	return TBL_CLASS_NAME
+}
+*/
+
+// pool 连接池模式
+func ConnectToDB(uri, name string, timeout time.Duration, num uint64) (*mongo.Database, error) {
+	// 设置连接超时时间
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	// 通过传进来的uri连接相关的配置
+	opts := options.Client().ApplyURI(uri)
+	// 设置最大连接数 - 默认是100 ，不设置就是最大 max 64
+	opts.SetMaxPoolSize(num)
+	// 发起链接
+	client, err := mongo.Connect(ctx, opts)
+	if err != nil {
+		fmt.Println(err)
+		return nil, err
+	}
+	// 判断服务是不是可用
+	// if err = client.Ping(context.Background(), readpref.Primary()); err != nil {
+	// 	fmt.Println(err)
+	// 	return nil, err
+	// }
+	// 返回 client
+	return client.Database(name), nil
+}
+
+func init() {
+	var err error
+	collection_map = make(map[string]*mongo.Collection)
+
+	condb := func() error {
+		db_mutex.Lock()
+		defer db_mutex.Unlock()
+		fmt.Println("----------------------ready connect to mongodb!")
+		toDB, err = ConnectToDB(url, DB_NAME, maxTime, DB_CLIENT_MAX_NUM)
+		if err != nil {
+			db_ready = false
+			fmt.Println("----------------------failed connectto mongodb!")
+			return err
+		}
+		fmt.Println("----------------------connectted to mongodb!")
+
+		db_ready = true
+		collection_map[ENTREPRENEURSHIP_TBL] = toDB.Collection(ENTREPRENEURSHIP_TBL)
+		// collection_map[TBL_CLASS_NAME] = toDB.Collection(TBL_CLASS_NAME)
+
+		return nil
+	}
+	condb()
+
+	go func() {
+		for {
+			timeout := time.After(time.Second * 4)
+			<-timeout
+			if toDB != nil {
+				if err := toDB.Client().Ping(context.Background(), readpref.Primary()); err != nil {
+					fmt.Println(err)
+
+					fmt.Println(" retry connect db")
+					condb()
+				}
+			} else {
+				condb()
+			}
+		}
+	}()
+}
+
+func Exit_DB() {
+	if toDB != nil {
+		toDB.Client().Disconnect(context.Background())
+	}
+}
+
+func Get_collecton(TableName string) (*mongo.Collection, error) {
+	db_mutex.Lock()
+	defer db_mutex.Unlock()
+
+	if !db_ready {
+		return nil, errors.New("db disconnected, waitting for retry connect")
+	}
+
+	collection, ok := collection_map[TableName]
+	if !ok {
+		fmt.Println("can't find collection")
+		return nil, errors.New("can't find collection")
+	}
+
+	return collection, nil
+}
+
+func BuildFilter(ftype string, filterData interface{}) (interface{}, error) {
+	filter, err := func(str string) (interface{}, error) {
+		switch str {
+		case "D":
+			return bson.D{}, nil
+		case "E":
+			return bson.E{}, nil
+		case "M":
+			return bson.M{}, nil
+		case "A":
+			return bson.A{}, nil
+		}
+
+		return nil, errors.New("unknow ftype, when BuildQueryFilter()")
+	}(ftype)
+	if err != nil {
+		return nil, err
+	}
+
+	data, err := bson.Marshal(filterData)
+	if err != nil {
+		fmt.Printf("marshal error: %v", err)
+		return filter, err
+	}
+
+	err = bson.Unmarshal([]byte(data), filter)
+	if err != nil {
+		fmt.Printf("unmarshal error: %v", err)
+		return filter, err
+	}
+	log.Printf("filter: %v", filter)
+	return filter, nil
+}

src/db/entrepreneurship.go

+package db
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	"go.mongodb.org/mongo-driver/mongo"
+)
+
+type Entrepreneurship struct {
+	id       int32  `json:"id"`
+	typeName string `json:"typeName"`
+	question string `json:"question"`
+	A        string `json:"A"`
+	B        string `json:"B"`
+	C        string `json:"C"`
+	D        string `json:"D"`
+	E        string `json:"E"`
+}
+
+//GetList 获取全量的数据
+func (l *Entrepreneurship) GetList(filter interface{}, objs interface{}) error {
+	collection, err := Get_collecton(ENTREPRENEURSHIP_TBL)
+	if err != nil {
+		return err
+	}
+
+	cur, err := collection.Find(context.Background(), filter)
+	if err != nil {
+		fmt.Println(err)
+		return err
+	}
+	if err := cur.Err(); err != nil {
+		fmt.Println(err)
+		return err
+	}
+	err = cur.All(context.Background(), &objs)
+	if err != nil {
+		fmt.Println(err)
+		return err
+	}
+	cur.Close(context.Background())
+
+	log.Println("collection.Find curl.All: ", objs)
+
+	return nil
+}
+
+// AddOne 新增一条数据
+func (s *Entrepreneurship) AddOne() (*mongo.InsertOneResult, error) {
+	collection, err := Get_collecton(ENTREPRENEURSHIP_TBL)
+	if err != nil {
+		return nil, err
+	}
+
+	objId, err := collection.InsertOne(context.TODO(), *s)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+	log.Println("录入数据成功，objId:", objId)
+
+	return objId, nil
+}

src/db/initMongo.go

+package db
+
+import (
+	"context"
+	"log"
+	"time"
+
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
+)
+
+var mgoCli *mongo.Client
+
+func initDb() {
+	var err error
+	credential := options.Credential{
+		AuthMechanism: "SCRAM-SHA-1", // 阿里云服务的
+		Username:      "root",        // mongodb用户名
+		Password:      "root",        //mongodb 密码
+		AuthSource:    "admin",       //默认admin不需要改
+		PasswordSet:   true,
+	}
+
+	clientOpts := options.Client().ApplyURI("mongodb://localhost:3733").
+		SetAuth(credential)
+	//连接到MongoDB
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) // 设置5s超时
+	defer cancel()
+
+	client, err := mongo.Connect(ctx, clientOpts)
+	if err != nil {
+		log.Fatal(err)
+	}
+	//检查连接
+	err = client.Ping(context.TODO(), nil)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+func MgoCli() *mongo.Client {
+	if mgoCli == nil {
+		initDb()
+	}
+	return mgoCli
+}

src/log/logger.go

+package logger
+
+import (
+	"io"
+	"log"
+	"os"
+)
+
+const (
+	flag       = log.Ldate | log.Ltime | log.Lshortfile
+	preDebug   = "[DEBUG]"
+	preInfo    = "[INFO]"
+	preWarning = "[WARNING]"
+	preError   = "[ERROR]"
+)
+
+var (
+	logFile        io.Writer
+	debugLogger    *log.Logger
+	infoLogger     *log.Logger
+	warningLogger  *log.Logger
+	errorLogger    *log.Logger
+	defaultLogFile = "./logs/web.log"
+)
+
+func init() {
+	var err error
+	logFile, err = os.OpenFile(defaultLogFile, os.O_CREATE|os.O_APPEND|os.O_RDWR, 0666)
+	if err != nil {
+		logFile, err = os.OpenFile(defaultLogFile, os.O_CREATE|os.O_APPEND|os.O_RDWR, 0666)
+		if err != nil {
+			log.Fatalf("create log file err %+v", err)
+		}
+	}
+	debugLogger = log.New(logFile, preDebug, flag)
+	infoLogger = log.New(logFile, preInfo, flag)
+	warningLogger = log.New(logFile, preWarning, flag)
+	errorLogger = log.New(logFile, preError, flag)
+}
+
+func DebugLog(format string, v ...interface{}) {
+	debugLogger.Printf(format, v...)
+}
+
+func InfoLog(format string, v ...interface{}) {
+	infoLogger.Printf(format, v...)
+}
+
+func WarningLog(format string, v ...interface{}) {
+	warningLogger.Printf(format, v...)
+}
+
+func ErrorLog(format string, v ...interface{}) {
+	errorLogger.Printf(format, v...)
+}
+
+func SetOutputPath(path string) {
+	var err error
+	logFile, err = os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_RDWR, 0666)
+	if err != nil {
+		log.Fatalf("create log file err %+v", err)
+	}
+	debugLogger.SetOutput(logFile)
+	infoLogger.SetOutput(logFile)
+	warningLogger.SetOutput(logFile)
+	errorLogger.SetOutput(logFile)
+}

src/router/router.go

+package router
+
+import (
+	"gaoqiaoCJY/src/biz"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+func AddRouter(r *gin.Engine) {
+	r.GET("/api1", biz.Api1Handler)
+	r.POST("/api1", biz.Api1Handler)
+}
+
+func AddStaticFileServer(r *gin.Engine, staticPath string) {
+	err := filepath.Walk("./"+staticPath,
+		func(path string, info os.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
+			if !info.IsDir() {
+				routerPath := strings.Replace(path, staticPath, "", 1)
+				routerPath = strings.ReplaceAll(routerPath, "\\", "/")
+				r.StaticFile(routerPath, "./"+path)
+			}
+			return nil
+		})
+	r.StaticFile("/", "./"+staticPath+"/index.html")
+	if err != nil {
+		log.Println(err)
+	}
+}

src/server/httpserver.go

+package server
+
+import (
+	"gaoqiaoCJY/src/console"
+	"gaoqiaoCJY/src/router"
+
+	"github.com/gin-gonic/gin"
+)
+
+func CreateHttpServer(addr string) *gin.Engine {
+	gin.SetMode(gin.ReleaseMode)
+	r := gin.Default()
+
+	//api路由
+	router.AddRouter(r)
+	//静态文件服务器
+	router.AddStaticFileServer(r, "public")
+
+	console.Log("服务器监听地址", addr, "静态文件目录 ./public")
+	err := r.Run(addr)
+	if err != nil {
+		panic(err.Error())
+	}
+	return r
+}