SpringMVC 数据校验。（后台校验 hibernate validate）.

1. 数据校验。（后台校验 hibernate validate）.

  1. 引入jar包。

 

 

  1. 在相应的实体类中加入注解。

    1.  

       

       

       

       1 package com.zhiyou100.wc.bean;
 2 
 3 import javax.validation.constraints.Pattern;
 4 
 5 import org.hibernate.validator.constraints.Length;
 6 import org.hibernate.validator.constraints.NotEmpty;
 7 
 8 public class Users {
 9     @NotEmpty(message="用户名不能为空")
10     private String uname;
11     @Length(min=6,max=12,message="密码长度在【6~12】之间")
12     private String password;
13     @Pattern(regexp="^((13[0-9])|(14[579])|(15([0-3,5-9]))|(16[6])|(17[0135678])|(18[0-9]|19[89]))\\d{8}$",message="手机格式不准确")
14     private String phone;
15     
16     public Users() {
17         super();
18     }
19 
20     public String getUname() {
21         return uname;
22     }
23 
24     public void setUname(String uname) {
25         this.uname = uname;
26     }
27 
28     public String getPassword() {
29         return password;
30     }
31 
32     public void setPassword(String password) {
33         this.password = password;
34     }
35 
36     public String getPhone() {
37         return phone;
38     }
39     
40     @Override
41     public String toString() {
42         return "Users [uname=" + uname + ", password=" + password + ", phone=" + phone + "]";
43     }
44 
45     public void setPhone(String phone) {
46         this.phone = phone;
47     }
48     
49     
50 }

       

  2. 在控制层接受参数时。

 1 package com.zhiyou100.wc.controllter;
 2 
 3 import java.util.HashMap;
 4 import java.util.List;
 5 import java.util.Map;
 6 
 7 import javax.validation.Valid;
 8 
 9 import org.springframework.stereotype.Controller;
10 import org.springframework.ui.Model;
11 import org.springframework.validation.BindingResult;
12 import org.springframework.validation.FieldError;
13 import org.springframework.web.bind.annotation.RequestMapping;
14 import org.springframework.web.bind.annotation.SessionAttributes;
15 
16 import com.zhiyou100.wc.bean.Users;
17 
18 @Controller
19 @RequestMapping("user")
20 @SessionAttributes(names= {"name","address"})//键名叫：name保存的作用域为session
21 public class UsersControllter {
22     
23 
24     @RequestMapping("register")
25     public String register(@Valid Users users,BindingResult br,Model model) {
26         if(br.hasErrors()) {
27             List<FieldError> fieldErrors= br.getFieldErrors();
28             Map<String,Object> errorMsg=new HashMap<>();
29             for(FieldError f:fieldErrors) {
30                 errorMsg.put(f.getField(), f.getDefaultMessage());
31             }
32             model.addAttribute("errorMsg", errorMsg);
33             return "forward:../register.jsp";
34         }
35 
36         return "list";
37     }
38 
39 
40 }

 

 

 

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html>
 4 <html>
 5 <head>
 6 <meta charset="UTF-8">
 7 <title>注册</title>
 8 </head>
 9 <body>
10     <!-- <a href="user/register.do?name=zs">链接到List.do</a> -->
11     
12     <form action="/Springmvc-0904/user/register" method="post">
13     姓名：<input type="text" name="uname"/>${errorMsg.uname }<br>
14     密码：<input type="text" name="password"/>${errorMsg.password }<br>
15     手机：<input type="text" name="phone"/>${errorMsg.phone }<br>
16         <input type="submit" value="提交"/>
17     </form>
18     
19 </body>
20 </html>

 

posted @ 2019-09-05 00:24  搬砖老王$  阅读(249)  评论(0)  编辑  收藏  举报