我使用下面的代码可以正常工作,但是现在我想将模板打印到文件中,并尝试以下操作但出现错误
package main import ( "html/template" "log" "os" ) func main() { t := template.Must(template.New("").Parse(`{{- range .}}{{.}}: echo "from {{.}}" {{end}} `)) t.Execute(os.Stdout, []string{"app1", "app2", "app3"}) f, err := os.Create("./myfile") if err != nil { log.Println("create file: ", err) return } err = t.Execute(f, t) if err != nil { log.Print("execute: ", err) return } f.Close() }
错误是:
execute: template: :1:10: executing "" at <.>: range can't iterate over {0xc00000e520 0xc00001e400 0xc0000b3000 0xc00009e0a2}
使用数组作为第二个参数,而不是模板本身。
package main import ( "html/template" "log" "os" ) func main() { t := template.Must(template.New("").Parse(`{{- range .}}{{.}}: echo "from {{.}}" {{end}} `)) t.Execute(os.Stdout, []string{"app1", "app2", "app3"}) f, err := os.Create("./myfile") if err != nil { log.Println("create file: ", err) return } err = t.Execute(f, []string{"app1", "app2", "app3"}) if err != nil { log.Print("execute: ", err) return } f.Close() }
输出:
app1: echo "from app1" app2: echo "from app2" app3: echo "from app3"
而且的内容myfile是
myfile