Spring Boot validation message changes
Introduction
It is a memorandum to change the message when validation check is performed with annotation in spring boot
Environmental information
Spring Boot 1.5.4(Maven)
Source
Create Controller, Form, View
LoginController.java
@Controller
@RequestMapping({"/", "/login"})
public class LoginController extends BaseController {
@ModelAttribute
public LoginForm initForm(){
return new LoginForm();
}
@RequestMapping(value = {"/index", "/"}, method = RequestMethod.GET)
public String index(Model model){
return "test/index";
}
@RequestMapping(value = "/login", method = RequestMethod.POST)
public String login(@ModelAttribute @Validated TestForm form, BindingResult result, Model model)
{
if(result.hasErrors()){
return "test/index";
}
//Login process
......
return "redirect:/menu/index";
}
}
LoginForm.java
public class LoginForm extends BaseForm {
@NotEmpty
public String userId;
@NotEmpty
public String password;
/*Getter for use with thymeleaf/need setter*/
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
login/index.html
<!DOCTYPE html>
<html
xmlns = "http://www.w3.org/1999/xhtml"
xmlns:th = "http://www.thymeleaf.org"
xmlns:layout = "http://www.ultraq.net.nz/thymeleaf/layout"
layout:decorator="layout"
>
<head>
<title>Login</title>
</head>
<body>
<div layout:fragment="contents">
<form class="form-horizontal" method="POST" action="/login/login/" th:action="@{/login/login}" th:object="${loginForm}">
<div class="form-group">
<p th:if="${#fields.hasErrors('*{userId}')}" th:errors="*{userId}" class="col-sm-offset-2 text-danger"></p>
<label for="user-id" class="col-sm-2 control-label">User ID</label>
<div class="col-sm-5">
<input type="text" class="form-control" id="user-id" th:field="*{userId}" placeholder="User ID" />
</div>
</div>
<div class="form-group">
<p th:if="${#fields.hasErrors('*{password}')}" th:errors="*{password}" class="col-sm-offset-2 text-danger"></p>
<label for="password" class="col-sm-2 control-label">password</label>
<div class="col-sm-5">
<input type="password" class="form-control" id="password" th:field="*{password}" placeholder="password" />
</div>
</div>
<div class="form-group">
<input type="submit" class="btn btn-primary col-sm-2 col-sm-offset-2" name="login" value="Login" />
<input type="reset" class="btn btn-default col-sm-2 col-sm-offset-1" name="clear" value="clear" />
</div>
</form>
</div>
</body>
</html>
Next, create a class that inherits WebMvcConfigurerAdapter
It seems that the message does not support UTF-8 by default, so
Set the encoding to UTF-8
AppConfigurerAdapter.java
@Configuration
public class AppConfigurerAdapter extends WebMvcConfigurerAdapter {
@Bean(name="validator")
public LocalValidatorFactoryBean localValidatorFactoryBean() {
LocalValidatorFactoryBean localValidatorFactoryBean = new LocalValidatorFactoryBean();
localValidatorFactoryBean.setValidationMessageSource(messageSource());
return localValidatorFactoryBean;
}
/**
*Validation message UTF-Manage with 8.
* @return
*/
@Bean(name = "messageSource")
public MessageSource messageSource()
{
ReloadableResourceBundleMessageSource bean = new ReloadableResourceBundleMessageSource();
bean.setBasename("classpath:ValidationMessages");
bean.setDefaultEncoding("UTF-8");
return bean;
}
}
Next, create a properties file that describes the validation message directly under the resource folder.
The file name should be the file name specified in ʻAppConfigurerAdapter.java. The Key of the message specifies the full name of the annotation. The field name is entered in {0}` of the message
If you want to give an alias to the field name, also set the field name
ValidationMessages.properties
#message
org.hibernate.validator.constraints.NotEmpty.message={0}Please enter.
#Field name
userId=User ID
password=password
Try to run
This is the result of pressing the login button without entering the user ID and password on the login screen.
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