java GUI组件国际化

时间：2023-01-27 21:29:44

Java自带有语言包，Locale类里面包含了各国语言解析，我们可以通过它来实现GUI组件国际化：

首先，新建一个类I18NBundle，里面包含了绑定语言和改变语言的方法，可以根据需要添加：

注意：先在src目录下添加各国语言的配置文件，比如中文配置文件名为：messages_zh_CN.properties，I18NBundle类里面绑定了的都要有。

 

import java.util.Locale;
import java.util.ResourceBundle;

/**
 * 
 * @author Lincoln_Jia
 * @date 2011-6-13
 *
 */
public class I18NBundle {

private static final Locale locale_pl = new Locale("pl", "PL");
private static final Locale locale_pt = new Locale("pt", "PT");
private static final Locale locale_rus = new Locale("ru", "RU");
private static final Locale locale_sp = new Locale("es", "ES");
private static final Locale locale_tur = new Locale("tr", "TR");
private static final Locale locale_ukr = new Locale("uk", "UA");
private static final Locale locale_cs = new Locale("cs", "CS");

public static ResourceBundle resource = ResourceBundle.getBundle("messages",Locale.US);
private static ResourceBundle resource_pl = ResourceBundle.getBundle("messages", locale_pl);
private static ResourceBundle resource_us = ResourceBundle.getBundle("messages", Locale.US);
private static ResourceBundle resource_cn = ResourceBundle.getBundle("messages", Locale.SIMPLIFIED_CHINESE);
private static ResourceBundle resource_de = ResourceBundle.getBundle("messages", Locale.GERMANY);
private static ResourceBundle resource_fr = ResourceBundle.getBundle("messages", Locale.FRANCE);
private static ResourceBundle resource_it = ResourceBundle.getBundle("messages", Locale.ITALY);
private static ResourceBundle resource_pt = ResourceBundle.getBundle("messages", locale_pt);
private static ResourceBundle resource_ru = ResourceBundle.getBundle("messages", locale_rus);
private static ResourceBundle resource_sp = ResourceBundle.getBundle("messages", locale_sp);
private static ResourceBundle resource_tr = ResourceBundle.getBundle("messages", locale_tur);
private static ResourceBundle resource_uk = ResourceBundle.getBundle("messages", locale_ukr);
private static ResourceBundle resource_cs = ResourceBundle.getBundle("messages", locale_cs);
private static ResourceBundle resource_tw = ResourceBundle.getBundle("messages", Locale.TRADITIONAL_CHINESE);

public String getString(String key) {
try {
return resource.getString(key);
} catch (Exception e) {
return key;
}

}

public static void changeCN() {
resource = resource_cn;
change();
}

public static void changeDE() {
resource = resource_de;
change();
}

public static void changeUS() {
resource = resource_us;
change();
}

public static void changeIT() {
resource = resource_it;
change();
}

public static void changePL() {
resource = resource_pl;
change();
}

public static void changePT() {
resource = resource_pt;
change();
}

public static void changeRUS() {
resource = resource_ru;
change();
}

public static void changeSP() {
resource = resource_sp;
change();
}

public static void changeTUR() {
resource = resource_tr;
change();
}

public static void changeUKR() {
resource = resource_uk;
change();
}

public static void changeFR() {
resource = resource_fr;
change();
}

public static void changeTW(){
resource = resource_tw;
change();
}

public static void changeCS(){
resource = resource_cs;
change();
}

private static void change() {
Object arr[] = I18NListener.compList.toArray();
for (Object obj : arr) {
I18NListener i18n = (I18NListener) obj;
if (i18n != null)
i18n.changeLang();
}
}

public static void main(String[] args) {

}
}

然后，写一个接口I18NListener，这个接口是提供给各组件实现的，后面说它的用法：

import java.awt.Color;
import java.awt.Font;
import java.util.ArrayList;
import java.util.List;

/**
 * 
 * @author Lincoln_Jia
 */
public interface I18NListener {
public static Font font12 = new Font(null,Font.PLAIN, 12);
public static Font font13 = new Font(null,Font.PLAIN, 13);
public static Font font14 = new Font(null,Font.PLAIN, 14);

public static Color bgColor = new Color(102,102,102);
public static Color fontColor = new Color(255,255,255);

public static Color selectColor = new Color(255,135,135);

public static I18NBundle bd = new I18NBundle();
public static List<I18NListener> compList = new ArrayList<I18NListener>();
public void changeLang();
}


其次，就要重写各个组件的方法了，这里以JLabel为例：

import javax.swing.*;


import java.text.MessageFormat;

/**
 *
 * @author Lincoln_Jia
 */
public class MyLabel extends JLabel implements I18NListener {

private static final long serialVersionUID = 7193514544808903392L;
private String _key;
    private Object[] values = null;

    public MyLabel() {
        super();
        compList.add(this);
        setFont(font12);
        setBackground(bgColor);
    }

    public MyLabel(String text) {
    _key = text;
        setText(_key);
        compList.add(this);
        setFont(font12);
    }

    @Override
    public void setText(String text) {
    try {
    this._key = text;
    super.setText(bd.getString(_key));//主要在这里
} catch (Exception e) {
    super.setText(text);
         }
    }

    @Override
    public void setToolTipText(String text){
    try {
            this._key = text;
            super.setToolTipText(bd.getString(_key));//主要在这里
        } catch (Exception e) {
            super.setToolTipText(text);
        }
    }

    public void setArgs(Object...values){
        this.values = values;
        String txt = bd.getString(_key);
        txt = MessageFormat.format(txt, values);
        super.setText(txt);
    }

    public void changeLang() {
        if(values==null)
            setText(_key);
        else{
            String txt = bd.getString(_key);
            txt = MessageFormat.format(txt, values);
            super.setText(txt);
        }
    }
}

最后，具体用的时候只要实例化该组件就可以了，比如：MyLabel myLabel = new MyLabel("message.language");

message.language 是语言配置文件里的Key，比如中文配置文件里面：message.language=语言；英文配置文件里面：message.language=Language；

改变语言调用I18NBundle类的changeCN()方法，选哪种语言就调用对应的方法。

就介绍到这里吧，希望对大家有帮助。

标签：

相关文章