hibernateValidate

Posted 2020-08-20 cnsdhzzl

1.创建主页面

<form action="${pageContext.request.contextPath }/first.do" method="post">
    <h1>数据验证</h1>
                 姓名:<input name="username"/>${nameErrormsg }<br/><br/>
                 成绩:<input name="score" />${scoreErrormsg }<br/><br/>
                 电话:<input name="phone" />${phoneErrormsg }<br/><br/>
       <input type="submit" value="注册"/>
    </form>

2.配置实体类

public class UserInfo {
   @NotEmpty(message="用户名不能为空") 
   @Size(min=3,max=6,message="姓名长度应在{min}-{max}个字符")
   private String username;
   
   @Min(value=0,message="成绩不能小于{value}")
   @Max(value=100,message="成绩不能大于{value}")
   private Integer score;
   
   @NotEmpty(message="手机号码不允许为空")  
   @Pattern(regexp="^1[34578]\\\\d{9}$",message="手机号码格式不正确")
   private String phone;
   
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    
    public Integer getScore() {
        return score;
    }
    public void setScore(Integer score) {
        this.score = score;
    }
    public String getPhone() {
        return phone;
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }
      
}

3.配置控制器

@Controller
public class MyController {
    // 处理器方法
    @RequestMapping(value = "/first.do")
    public ModelAndView doFirst(@Validated UserInfo info, BindingResult br) {

        ModelAndView mv = new ModelAndView();
        mv.addObject("info", info);
        mv.setViewName("/welcome.jsp");

        int errorCount = br.getErrorCount();

        if (errorCount > 0) {

            FieldError nameError = br.getFieldError("username");
            FieldError scoreError = br.getFieldError("score");
            FieldError phoneError = br.getFieldError("phone");

            if (nameError != null) {
                String nameErrormsg = nameError.getDefaultMessage();
                mv.addObject("nameErrormsg", nameErrormsg);
            }
            if (scoreError != null) {
                String scoreErrormsg = scoreError.getDefaultMessage();
                mv.addObject("scoreErrormsg", scoreErrormsg);
            }
            if (phoneError != null) {
                String phoneErrormsg = phoneError.getDefaultMessage();
                mv.addObject("phoneErrormsg", phoneErrormsg);
            }

            mv.setViewName("/index.jsp");
        }
        return mv;
    }

}

4.配置applicationContext.xml

<!-- 包扫描器 -->
     <context:component-scan base-package="cn.happy.controller"></context:component-scan>
    
     <!-- 生成器验证器 -->
     <bean id="myValidator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
       <property name="providerClass"  value="org.hibernate.validator.HibernateValidator"></property>
     </bean>
     
     <!-- 注解mvc注解驱动 -->    
     <mvc:annotation-driven validator="myValidator"/>

5.效果图