spring-mvc学习整理 form validation

使用@Valid annatation的表单校验

需要引入的依赖 ：

javax.validation.validation-api-1.0.0.GA.jar 校验标准接口

hibernate-annotations-3.4.0.GA.jar，hibernate-validator-4.0.1.GA.jar hibernate提供的实现包

slf4j-api-1.5.0.jar，slf4j-nop-1.5.0.jar 日志依赖包

1.pojo Form

01
public class LeadsForm {
02
/**
03
* http://my.oschina.net/u/244147" target="_blank" rel="nofollow">@see javax.validation.constraints.NotNull 使用标准中的注释类
04
*/
05
http://my.oschina.net/notnull" target="_blank" rel="nofollow">@NotNull
06
@Size()
07
private String contactName;
08
http://my.oschina.net/notnull" target="_blank" rel="nofollow">@NotNull
09
@Pattern(regexp = "^1\\d{10}$")
10
private String contactTel;
11

12
//~~GETTERS && SETTERS
13
}
2.controller

01
/**
02
* Renhenet.com Inc.
03
* Copyright (c) 2004-2012 All Rights Reserved.
04
*/
05
package com.renhenet.web;
06
import javax.validation.Valid;
07

08
import org.springframework.stereotype.Controller;
09
import org.springframework.ui.ModelMap;
10
import org.springframework.validation.BindingResult;
11
import org.springframework.web.bind.annotation.ModelAttribute;
12
import org.springframework.web.bind.annotation.RequestMapping;
13
import org.springframework.web.bind.annotation.RequestMethod;
14

15
import sample.LeadsForm;
16

17
/**
18
*
19
* http://my.oschina.net/arthor" target="_blank" rel="nofollow">@author xiaoxia.dong
20
* @version $Id: PostController.java,v 1.1 2012/08/10 14:38:11 dongxx Exp $
21
*/
22
@Controller
23
@RequestMapping("/post.html")
24
public class PostController {
25

26
@ModelAttribute("leadsForm")
27
public void modelAttribute(LeadsForm leadsForm) {
28
}
29

30
//使用 @Valid
31
@RequestMapping(method = RequestMethod.POST)
32
public String processSubmit(@Valid LeadsForm leadsForm, BindingResult result, ModelMap map) {
33
if (result.hasErrors()) {
34

35
}
36

37
return "post";
38
}
39
}
使用@Valid annatation 就不用在xml文件中配置 validator。其实使用了接口org.springframework.validation.Validator，默认实现类org.springframework.validation.beanvalidation.LocalValidatorFactoryBean

3.使用velocity模板，建立macro。spring的RequestContext可以通过$springMacroRequestContext变量在velocity中使用。

另外error.code刚好是@NotNull @Pattern等的类名

01
#macro( getErrorCode $objectName $field)
02
#set($errors = $springMacroRequestContext.getErrors($objectName))#if($errors && $errors.fieldErrors && $errors.fieldErrors.size()>0)#foreach($e in $errors.fieldErrors)#if("$!field"=="$e.field")$e.code#end#end#end
03
#end
04

05
#macro( Pattern $objectName $field $message)
06
#if("#getErrorCode($objectName,$field)"=="Pattern")
07
$!message
08
#end
09
#end
10
#macro( NotNull $objectName $field $message)
11
#if("#getErrorCode($objectName,$field)"=="NotNull")
12
$!message
13
#end
14
#end
15
#macro( Size $objectName $field $message)
16
#if("#getErrorCode($objectName,$field)"=="Size")
17
$!message
18
#end
19
#end
模板页面这样使用

01