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http://blog.csdn.net/forezp/article/details/71023817
本文出自方志朋的博客
这篇文篇主要简述如何在springboot中验证表单信息。在springmvc工程中，需要检查表单信息，表单信息验证主要通过注解的形式。
构建工程
创建一个springboot工程，由于用到了 web 、thymeleaf、validator、el，引入相应的起步依赖和依赖，代码清单如下：
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-starter-thymeleaf
org.hibernate
hibernate-validator
org.apache.tomcat.embed
tomcat-embed-el
创建一个PresonForm的Object类
package com.forezp.entity;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
/**
* Created by fangzhipeng on 2017/4/19.
*/
public class PersonForm {
@NotNull
@Size(min=2, max=30)
private String name;
@NotNull
@Min(18)
private Integer age;
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public String toString() {
return "Person(Name: " + this.name + ", Age: " + this.age + ")";
}
}
这个实体类，在2个属性:name,age.它们各自有验证的注解：
- @Size(min=2, max=30) name的长度为2-30个字符
- @NotNull 不为空
- @Min(18)age不能小于18
创建 web Controller
@Controller
public class WebController extends WebMvcConfigurerAdapter {
@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/results").setViewName("results");
}
@GetMapping("/")
public String showForm(PersonForm personForm) {
return "form";
}
@PostMapping("/")
public String checkPersonInfo(@Valid PersonForm personForm, BindingResult bindingResult) {
if (bindingResult.hasErrors()) {
return "form";
}
return "redirect:/results";
}
}
创建form表单
src/main/resources/templates/form.html:
注册成功的页面
src/main/resources/templates/results.html:
html>
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