wire.go文件：
// +build wireinject
// The build tag makes sure the stub is not built in the final build.
package di
import (
"github.com/google/wire"
)
//go:generate kratos t wire
func InitApp() (*App, func(), error) {
panic(wire.Build(dao.Provider, service.Provider, http.New, grpc.New, NewApp))
}
实现文件：
//dao
varProvider = wire.NewSet(New, NewDB, NewRedis)
//service
varProvider = wire.NewSet(New, wire.Bind(new(pb.Server), new(*Service)))
生成的wire_gen.go 文件：
func InitApp() (*App, func(), error) {
redis, cleanup, err := dao.NewRedis()
iferr != nil {
returnnil, nil, err
}
db, cleanup2, err := dao.NewDB()
iferr != nil {
cleanup()
returnnil, nil, err
}
daoDao, cleanup3, err := dao.New(redis, db)
iferr != nil {
cleanup2()
cleanup()
returnnil, nil, err
}
serviceService, cleanup4, err := service.New(daoDao)
iferr != nil {
cleanup3()
cleanup2()
cleanup()
returnnil, nil, err
}
engine, err := http.New(serviceService)
iferr != nil {
cleanup4()
cleanup3()
cleanup2()
cleanup()
returnnil, nil, err
}
server, err := grpc.New(serviceService)
iferr != nil {
cleanup4()
cleanup3()
cleanup2()
cleanup()
returnnil, nil, err
}
app, cleanup5, err := NewApp(serviceService, engine, server)
iferr != nil {
cleanup4()
cleanup3()
cleanup2()
cleanup()
returnnil, nil, err
}
returnapp, func() {
cleanup5()
cleanup4()
cleanup3()
cleanup2()
cleanup()
}, nil
}