SpringBoot项目使用Hibernate Validator进行表单验证
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SpringBoot项目使用Hibernate Validator进行表单验证
使用Hibernate Validator验证表单信息，具体要求入下：
(1)用户名必须输入，并且长度范围为5~20
(2)年龄范围在18~60
(3)工作日期在系统日期之前
1-创建Maven项目，并在pom.xml文件中中添加相关依赖。
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>Thymeleaf</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<!--配置SpringBoot的核心启动器-->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.4.RELEASE</version>
</parent>
<dependencies>
<dependency>
<!--添加starter模块-->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
</project>
2-在src/main/java目录下创建com.model包，在该包中创建实体模型类，并在该类中进行注解验证。
import org.hibernate.validator.constraints.Length;
import org.hibernate.validator.constraints.Range;
import org.springframework.format.annotation.DateTimeFormat;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.Past;
import java.util.Date;
public class People {
@NotBlank(message = "用户名必须输入")
@Length(min = 5, max = 20, message = "用户名长度范围在5~20之间 ")
private String username ;
@Range(min = 18, max = 60, message = "年龄范围在18~60之间")
private int age ;
@Past(message = "当前日期必须在系统日期之前")
@DateTimeFormat(pattern = "yyyy-MM-dd")
private Date date ;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
}
3-在src/main/java目录下创建com.controller包，在该包中创建控制器类，在控制器类中有两个方法，一个初始化方法，一个添加请求处理方法。
import com.model.People;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class TestValidator {
@RequestMapping("/test")
public String test(@ModelAttribute("peopleInfo")People people){ //初始化页面方法
return "test" ;
}
@RequestMapping("/addUser")
public String add(@ModelAttribute("peopleInfo") @Validated People people, BindingResult result){
if(result.hasErrors()){
return "test" ; //验证失败
}
return "test1" ; //验证成功，跳到test1.html页面
}
}
4-在src/main/resources/templates目录下创建视图页面test.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>表单验证页面</title>
<link rel = "stylesheet" th:href = "@{css/bootstrap.min.css}"/>
<link rel = "stylesheet" th:href = "@{css/bootstrap-theme.min.css}"/>
</head>
<body>
<div class = "panel panel-primary">
<div class = "panel-heading">
<h3 class = "panel-title">数据验证</h3>
</div>
</div>
<div class = "container">
<div>
<h4>添加用户</h4>
</div>
<div class = "row">
<div class = "col-md-6 col-sm-6">
<form th:action="@{/addUser}" th:object="${peopleInfo}" method="post">
<div class="form-group">
<div class="input-group col-md-6">
<span class = "input-group-addon">
<i class = "glyphicon glyphicon-pencil"></i>
</span>
<input class="form-control" type = "text" th:placeholder="请输入用户名" th:field = "*{username}"/>
<span th:errors = "*{username}"></span>
</div>
</div>
<div class = "form-group">
<div class = "input-group col-md-6">
<span class = "input-group-addon">
<i class = "glyphicon glyphicon-pencil"></i>
</span>
<input class="form-control" type="text" th:placeholder = "请输入年龄" th:field = "*{age}"/>
<span th:errors = "*{age}"></span>
</div>
</div>
<div class = "form-group">
<div class = "input-group col-md-6">
<span class = "input-group-addon">
<i class = "glyphicon glyphicon-pencil"></i>
</span>
<input class="form-control" type="text" th:placeholder = "请输入日期" th:field = "*{date}"/>
<span th:errors = "*{date}"></span>
</div>
</div>
<div class = "form-group">
<div class = "col-md-6">
<div class = "btn-group btn-group-justified">
<div class = "btn-group">
<button type="submit" class = "btn btn-success">
<span class = "glyphicon glyphicon-share"></span>
添加
</button>
</div>
</div>
</div>
</div>
</form>
</div>
</div>
</div>
</body>
</html>
5-在src/main/java目录下创建包com.test，在该包中创建启动类，运行启动类。
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication(scanBasePackages = {"com"})
public class TestApplication {
public static void main(String[] args) {
SpringApplication.run(TestApplication.class, args) ;
}
}
访问http://localhost:8080/test地址，并输入错误信息，点击添加，如下图所示：
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