此类文章都是从网上收集整理。
本文是对网页中的Form数据进行验证。
golang的源代码：
1 package main 2 3 import ( 4 "fmt" 5 "html/template" 6 "log" 7 "net/http" 8 "regexp" 9 "strconv" 10 "strings" 11 "time" 12 ) 13 14 type MyMux struct { 15 } 16 17 func (p *MyMux) ServeHTTP(res http.ResponseWriter, req *http.Request) { 18 if req.URL.Path == "/" { 19 SayHi(res, req) 20 return 21 } else if req.URL.Path == "/login" { 22 Login(res, req) 23 return 24 } 25 26 http.NotFound(res, req) 27 return 28 } 29 30 func SayHi(res http.ResponseWriter, req *http.Request) { 31 fmt.Fprint(res, "Hello World") 32 } 33 34 func Login(res http.ResponseWriter, req *http.Request) { 35 if req.Method == "GET" { 36 t, _ := template.ParseFiles("login.html") 37 log.Println(t.Execute(res, nil)) 38 //fmt.Fprint(res, req.Form["username"], req.Form["password"]) 39 } else { 40 if len(req.FormValue("username")) == 0 { 41 fmt.Fprint(res, "用户名不能为空") 42 fmt.Fprint(res, "\npassword: ", req.FormValue("password")) 43 return 44 } 45 // if m, _ := regexp.MatchString("^[0-9]+$", req.Form.Get("age")); !m { return false } 46 age, err := strconv.Atoi(req.Form.Get("age")) 47 if err != nil { 48 fmt.Fprint(res, "年龄请输入数值") 49 return 50 } 51 if age > 140 || age < 0 { 52 fmt.Fprint(res, "年龄取值范围在0 ~ 140岁之间") 53 return 54 } 55 if m, _ := regexp.MatchString("^\\p{Han}+$", req.Form.Get("realname")); !m { 56 fmt.Fprint(res, "真实的姓名不是汉字") 57 return 58 } 59 if m, _ := regexp.MatchString("^[a-zA-Z]+$", req.Form.Get("engname")); !m { 60 fmt.Fprint(res, "英文名字输入的不是英文") 61 return 62 } 63 if m, _ := regexp.MatchString(`^([\w\.\_]{2,10})@(\w{1,}).([a-z]{2,4})$`, req.Form.Get("email")); !m { 64 fmt.Fprint(res, "电子邮件格式不正确") 65 return 66 } 67 if m, _ := regexp.MatchString(`^(1[3|4|5|8][0-9]\d{4,8})$`, req.Form.Get("mobile")); !m { 68 fmt.Fprint(res, "您输入的不是手机号码") 69 return 70 } 71 slice1 := []string{"apple", "pear", "banane"} 72 found1 := false 73 v1 := req.Form.Get("fruit") 74 for _, item := range slice1 { 75 if item == v1 { 76 found1 = true 77 break 78 } 79 } 80 if found1 == false { 81 fmt.Fprint(res, "系统发现您在伪造下拉菜单中不存在的选项") 82 return 83 } 84 85 slice2 := []int{1, 2} 86 found2 := false 87 for _, v2 := range slice2 { 88 gender, err := strconv.Atoi(req.Form.Get("gender")) 89 if err == nil && v2 == gender { 90 found2 = true 91 break 92 } 93 } 94 if found2 == false { 95 fmt.Fprint(res, "系统发现您在伪造选项中不存在的选项") 96 return 97 } 98 99 m := map[string]int{"football": 0, "basketball": 1, "tennis": 2} 100 found3 := false 101 for _, sport := range req.Form["interest"] { 102 _, exist := m[sport] 103 if exist == false { 104 found3 = true 105 break 106 } 107 } 108 if found3 == true { 109 fmt.Fprint(res, "系统发现您在伪造复选框选项") 110 return 111 } 112 113 mytime, err := String2Time(req.Form.Get("txtDateTime")) 114 if err != nil { 115 fmt.Fprint(res, "您输入的不是日期时间格式的数据") 116 return 117 } 118 119 //验证15位身份证，15位的是全部数字 120 if m, _ := regexp.MatchString(`^(\d{15})$`, req.Form.Get("id1card")); !m { 121 fmt.Fprint(res, "您输入的不是15位身份证号码") 122 return 123 } 124 //验证18位身份证，18位前17位为数字，最后一位是校验位，可能为数字或字符X 125 if m, _ := regexp.MatchString(`^(\d{17})([0-9]|X)$`, req.Form.Get("id2card")); !m { 126 fmt.Fprint(res, "您输入的不是18位身份证号码") 127 return 128 } 129 //请求的是登陆数据，那么执行登陆的逻辑判断 130 req.ParseForm() // req.FormValue("username") 调用req.FormValue时会自动调用req.ParseForm，所以不必提前调用 131 fmt.Println("username:", req.Form["username"]) //必需提前调用req.ParseForm() 132 fmt.Println("password:", req.Form["password"]) 133 134 fmt.Fprint(res, "\n username:", req.Form["username"][0], " ", "password:", req.Form["password"][0]) 135 fmt.Fprint(res, "\n age:", age) 136 fmt.Fprint(res, "\n Real Name:", req.Form.Get("realname")) 137 fmt.Fprint(res, "\n English Name:", req.Form.Get("engname")) 138 fmt.Fprint(res, "\n Email:", req.Form.Get("email")) 139 fmt.Fprint(res, "\n Mobile:", req.Form.Get("mobile")) 140 fmt.Fprint(res, "\n Fruit:", req.Form.Get("fruit")) 141 fmt.Fprint(res, "\n Gender:", req.Form.Get("gender")) 142 fmt.Fprint(res, "\n Interests:", req.Form["interest"]) 143 fmt.Fprint(res, "\n txtDateTime: ", mytime) 144 fmt.Fprint(res, "\n 15位身份证: ", req.Form.Get("id1card")) 145 fmt.Fprint(res, "\n 18位身份证: ", req.Form.Get("id2card")) 146 } 147 } 148 149 func main() { 150 mux := &MyMux{} 151 http.ListenAndServe(":8080", mux) // http://127.0.0.1:8080/login 152 } 153 154 func String2Time(in string) (out time.Time, err error) { 155 in = strings.Replace(in, "/", "-", -1) 156 fmt.Println(in) 157 if len(in) > 10 { 158 out, err = time.Parse("2006-01-02 15:04:05", in) //layout使用"2006/01/02 15:04:05"此数据格式转换会出错 159 } else { 160 out, err = time.Parse("2006-01-02", in) //layout使用"2006/01/02"此数据格式转换会出错 161 } 162 return out, err 163 }
对应的模板文件：
1 <!Doctype html> 2 <html> 3 <head> 4 <title></title> 5 </head> 6 <body> 7 <form action="/login" method="post"> 8 用户名:<input type="text" name="username"><br> 9 密码:<input type="password" name="password"><br> 10 <input type="submit" value="登陆"><br> 11 <hr> 12 Age:<input type="text" name="age"><br> 13 Real Name:<input type="text" name="realname"><br> 14 English Name:<input type="text" name="engname"><br> 15 Email:<input type="text" name="email"><br> 16 Mobile:<input type="text" name="mobile"><br> 17 <select name="fruit"> 18 <option value="apple">apple</option> 19 <option value="pear">pear</option> 20 <option value="banana">banana</option> 21 </select><br> 22 <input type="radio" name="gender" value="1">男 <br> 23 <input type="radio" name="gender" value="2">女 <br> 24 <input type="checkbox" name="interest" value="football">足球 <br> 25 <input type="checkbox" name="interest" value="basketball">篮球 <br> 26 <input type="checkbox" name="interest" value="tennis">网球 <br> 27 日期时间：<input type="text" name="txtDateTime"><br> 28 身份证(15位)：<input type="text" name="id1card"><br> 29 身份证(18位)：<input type="text" name="id2card"><br> 30 </form> 31 </body> 32 33 </html>