示例代码：
package main
import (
"fmt"
"io"
"net/http"
"os"
)
const (
upload_path string = "./upload/"
)
func load_success(w http.ResponseWriter,r *http.Request) {
io.WriteString(w,"上传成功!")
}
//上传
func uploadHandle(w http.ResponseWriter,r *http.Request) {
//从请求当中判断方法
if r.Method == "GET" {
io.WriteString(w,"<html><head><title>上传</title></head>"+
"<body><form action='#' method=\"post\" enctype=\"multipart/form-data\">"+
"<label>上传图片</label>"+":"+
"<input type=\"file\" name='file' /><br/><br/>"+
"<label><input type=\"submit\" value=\"上传图片\"/></label></form></body></html>")
} else {
//获取文件内容 要这样获取
file,head,err := r.FormFile("file")
if err != nil {
fmt.Println(err)
return
}
defer file.Close()
//创建文件
fW,err := os.Create(upload_path + head.Filename)
if err != nil {
fmt.Println("文件创建失败")
return
}
defer fW.Close()
_,err = io.Copy(fW,file)
if err != nil {
fmt.Println("文件保存失败")
return
}
//io.WriteString(w,head.Filename+" 保存成功")
http.Redirect(w,r,"/success",http.StatusFound)
//io.WriteString(w,head.Filename)
}
}
func main() {
fmt.Println("OK!")
//启动一个http 服务器
http.HandleFunc("/success",load_success)
//上传
http.HandleFunc("/upload",uploadHandle)
err := http.ListenAndServe(":8080",nil)
if err != nil {
fmt.Println("服务器启动失败")
return
}
fmt.Println("服务器启动成功")
}
和Java语言相比，go语言程序更加简洁、轻便；并发性好；良好的语言设计和拥有较好的执行性能。
