第１０章　メッセージの国際化

# **メッセージの国際化**

***

**本章の目標**は
下記の画面ような国際化機能を追加します。

<a href="https://i.loli.net/2019/07/03/5d1c5b31dcd7e56992.jpg" target="_blank">
<img src="https://i.loli.net/2019/07/03/5d1c5b31dcd7e56992.jpg" width="40%" /></a>

<br>

## **1.messages.propertiesの設定**

**（１）** application.propertiesの中にspring.messages.basenameを設定する

**（２）** i18n/の下にをmessages_言語コード.propertiesファイルを設定する 

<a href="https://i.loli.net/2019/07/01/5d19df8ec9f3d66335.jpg" target="_blank">
<img src="https://i.loli.net/2019/07/01/5d19df8ec9f3d66335.jpg" width="40%" /></a>

<br>

## **2.ValidationMessages.propertiesとapplication-messages.properties統合する**

### **MessageConfigの作成**

<img src="https://i.loli.net/2019/07/03/5d1c18329288531164.jpg" />

<br>

**MessageConfig.java**
```
package com.softusing.demo.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;

@Configuration
public class MessageConfig {

@Autowired
	private MessageSource messageSource;

@Bean
	public LocalValidatorFactoryBean validator() {
		LocalValidatorFactoryBean localValidatorFactoryBean = new LocalValidatorFactoryBean();

localValidatorFactoryBean.setValidationMessageSource(messageSource);

return localValidatorFactoryBean;
	}
}
```
<br>

## **3.メッセージを利用**

**Login.html**のメッセージを設定する
```

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>welcome</title>
</head>
<body>
	<h1 th:text="#{title}"></h1>
	<hr>
	<div id="typein" align="center">
		<form method="post" action="/auth" th:object="${form}">
			<table>
				<tr id="show" style="color: red" th:inline="text" th:each="message : ${errorList}">
					<td>[[${message.defaultMessage}]]</td>
				</tr>
				<tr>
					<td><p th:text="#{userid}"></p></td>
				</tr>
				<tr>
					<td><input type="text" name="accountId" value="" size="40" th:field="*{accountId}"
					    th:placeholder="#{login.userid.placeholder}" onkeydown="eraseInfo();" />
					</td>
				</tr>
				<tr><td></td></tr>
				<tr>
					<td><p th:text="#{password}"></p></td>
				</tr>
				<tr>
					<td><input type="password" name="password" value="" size="40" th:field="*{password}"
						maxlength="6" onkeydown="eraseInfo();" />
					</td>
				</tr>
			</table>

<input type="submit" value="" class="loginbtn" th:attr="value=#{login}"/><br />
			<div id="show" style="color: red">
				<p th:text="${message}"></p>
			</div>
		</form>
	</div>
	<footer>
		<hr>
		<h4>Softusing.co.jp</h4>
	</footer>
</body>
</html>

```

<br>

<strong>User</strong>フォーム<strong>Validate</strong>のメッセージを設定する
<br>

**UserForm.java**
```

package com.softusing.demo.form;

import javax.validation.constraints.Email;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.Size;

public class UserForm {

@NotEmpty(message="{login.error.accountId.notEmpty}")
	@Email(message="{login.error.accountId.isEmail}")
	private String accountId;

@NotEmpty(message="{login.error.password.notEmpty}")
	@Size(min=6,max=6, message="{login.error.password.length}")
	private String password;

public String getAccountId() {
		return accountId;
	}

public void setAccountId(String accountId) {
		this.accountId = accountId;
	}

public String getPassword() {
		return password;
	}

public void setPassword(String password) {
		this.password = password;
	}
}
```
<br>
<strong>messageSource.getMessage</strong>メソッドを呼び出す
<br>

+ **UserIservice.java**
```
package com.softusing.demo.service;

import java.util.ArrayList;
import java.util.List;
import javax.annotation.Resource;

import org.springframework.context.MessageSource;
import org.springframework.stereotype.Service;

import com.softusing.demo.bean.IUser;
import com.softusing.demo.form.UserForm;
import com.softusing.demo.mapper.UserMapper;

@Service("userService")
public class UserIservice implements UserService {
	@Resource
	private UserMapper userMapper;
	@Resource
	private MessageSource messageSource;
 
	private Locale locale = Locale.getDefault();
	
	public List<String> getResult (UserForm userForm){
		IUser user = userMapper.queryUser(userForm.getAccountId()); 
		List<String> errorlist = new ArrayList<String>(); 
		if (user == null) { 
			errorlist.add(messageSource.getMessage("login.message.accountId.error", null, locale)); 
			} 
		else if (!user.getPassword().equals(userForm.getPassword())) { 
			errorlist.add(messageSource.getMessage("login.message.password.error", null, locale));
		}
	return errorlist;
	}
}
```

## **4.結果の確認**

+ **日本語の場合**

<a href="https://i.loli.net/2019/07/03/5d1c615aa912347333.jpg" target="_blank">
<img src="https://i.loli.net/2019/07/03/5d1c615aa912347333.jpg" width="40%" /></a>

<br>

<a href="https://i.loli.net/2019/07/03/5d1c6385ac54d27703.jpg" target="_blank">
<img src="https://i.loli.net/2019/07/03/5d1c6385ac54d27703.jpg"  width="40%" /></a>

<br>

+ **中国語語の場合**

<a href="https://i.loli.net/2019/07/03/5d1c645542ce421478.jpg" target="_blank">
<img src="https://i.loli.net/2019/07/03/5d1c645542ce421478.jpg" width="40%" /></a>

+ **英語の場合**

<a href="https://i.loli.net/2019/07/03/5d1c645542ce421478.jpg" target="_blank">
<img src="https://i.loli.net/2019/07/03/5d1c645542ce421478.jpg" width="40%" /></a>

content

第１０章 メッセージの国際化

第１０章　メッセージの国際化