如何使用 ResoucesBundles 在属性文件中存储与可用性相关的值(字体、尺寸、颜色...) [英] how to store Usability related values (Font, Dimension, Color,...) in properties file using ResoucesBundles
问题描述
我可以使用属性文件和使用 ResourceBundle.getString() 的 ResourceBundle 类获取字符串.甚至还可以使用以下方法获取 int 和 float 对象:
I'm able to fetch the Strings using a properties file and ResourceBundle class using ResourceBundle.getString(). And even able to fetch int and float objects also using:
int a = (int) ResourceBundle.getObject("IntKey");
float b = (float) ResourceBundle.getObject("FloatKey");
但是我想知道如何获取一些复杂的对象，比如字体?
But I want to know to how to fetch some complex objects like fonts?
Font font = (Font) ResourceBundle.getObject("FontKey");
但是如何在属性文件中存储字体值?我可以将对象存储为:new Font("Tahoma", Font.PLAIN, 12); 到一个键:属性文件的值中.
But how to store the Font values in properties file? can I store the object like: new Font("Tahoma", Font.PLAIN, 12); into a key:value of a properties file.
@doublesharp 你的回答很好.实际上我没有扩展 ResourceBundle 类来覆盖 handleGetObjects() 方法.我的实现如下图所示:
@doublesharp your answer is fine. Actually I'm not extending ResourceBundle class to override handleGetObjects() method. My implemention is as shown below:
public class Usability {
private static final String BUNDLE_NAME = "com.upgrade.utility.resources.Usability";
private static final ResourceBundle RESOURCE_BUNDLE = ResourceBundle.getBundle(BUNDLE_NAME);
private Usability() {}
public static String get(String key, Object ... args) {
String value = null;
try {
value = RESOURCE_BUNDLE.getString(key);
for (Object var : args) {
if (var != null) {
try {
value = value.replaceFirst("@", var.toString());
} catch (Exception e) {}
}
}
} catch (MissingResourceException e) {
value = '!' + key + '!';
}
return value;
}
public static Font getFont(String key){
Font value = null;
try {
String fontName = (String) RESOURCE_BUNDLE.getString(key+ ".Name");
Integer fontStyle = Integer.parseInt(RESOURCE_BUNDLE.getString(key+ ".Style"));
Integer fontSize = Integer.parseInt(RESOURCE_BUNDLE.getString(key+ ".Size"));
value = new Font(fontName, fontStyle, fontSize);
} catch (MissingResourceException e) {
value = new Font("Tahoma", Font.PLAIN, 11);
}catch (NullPointerException npe) {
value = new Font("Tahoma", Font.PLAIN, 11);
}
System.out.println("Font"+ value);
return value;
}
}
在这种情况下我如何使用你的方法?我是 JAVA 新手，能否告诉我如何修改我的实现以使用 handleGetObjects() 方法?
How Can I use your method in this case? I'm new to JAVA, can you please tell me how to modify my implementation to use the method handleGetObjects() ?
@doublesharp:从你的最后一条评论来看，我已经这样修改了，但是在可用性类的第三行中出现了 Class Cast 异常.
@doublesharp: From your last comment, I've modified like this, But getting Class Cast exception in 3rd line of Usability class.
public class Usability {
private static final String BUNDLE_NAME = "com.upgrade.utility.resources.Usability";
public static final MyResourceBundle RESOURCE_BUNDLE = (MyResourceBundle) MyResourceBundle.getBundle(BUNDLE_NAME);
private Usability() {}
public static String get(String key, Object ... args) {
String value = null;
try {
value = RESOURCE_BUNDLE.getString(key);
for (Object var : args) {
if (var != null) {
try {
value = value.replaceFirst("@", var.toString());
} catch (Exception e) {}
}
}
} catch (MissingResourceException e) {
value = '!' + key + '!';
}
return value;
}
}
我的扩展 ResourceBunlde 类是:
My extended ResourceBunlde class is:
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.util.Enumeration;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
public class MyResourceBundle extends ResourceBundle{
@Override
public Object handleGetObject(String key) {
if (key.contains("Font")) {
return getFont(key);
} else if (key.contains("color")){
return getColor(key);
}else if (key.contains("Dimension")){
return getDimension(key);
}
return this.getObject(key);
}
public Font getFont(String key){
Font value = null;
try {
String fontName = (String) this.getString(key+ ".Name");
Integer fontStyle = Integer.parseInt(this.getString(key+ ".Style"));
Integer fontSize = Integer.parseInt(this.getString(key+ ".Size"));
value = new Font(fontName, fontStyle, fontSize);
} catch (MissingResourceException e) {
value = new Font("Tahoma", Font.PLAIN, 11);
}catch (NullPointerException npe) {
value = new Font("Tahoma", Font.PLAIN, 11);
}
return value;
}
public Color getColor(String key){
Color value = null;
try {
Integer R = Integer.parseInt(this.getString(key+ ".R"));
Integer G = Integer.parseInt(this.getString(key+ ".G"));
Integer B = Integer.parseInt(this.getString(key+ ".B"));
value = new Color(R, G, B);
} catch (MissingResourceException e) {
// value = new Color("Tahoma", Font.PLAIN, 11);
}catch (NullPointerException npe) {
// value = new Color("Tahoma", Font.PLAIN, 11);
}
return value;
}
public Dimension getDimension(String key){
Dimension value = null;
try {
Integer X = Integer.parseInt(this.getString(key+ ".X"));
Integer Y = Integer.parseInt(this.getString(key+ ".Y"));
value = new Dimension(X, Y);
} catch (MissingResourceException e) {
// value = new Color("Tahoma", Font.PLAIN, 11);
}catch (NullPointerException npe) {
// value = new Color("Tahoma", Font.PLAIN, 11);
}
return value;
}
@Override
public Enumeration<String> getKeys() {
return null;
}
}
如何解决这个异常?
还有我的回答有问题吗?使用我刚才打电话的方式
And also Is there problem in my answer? using which I was just calling like
Usability.getFont("JPanelUpgradeTypeScreen.ElementLabelFont");
但是使用您的回答技巧，我需要这样称呼它(通话中需要类型转换):
But using your answer techinque, I need to call it like (Type conversion is needed in call) :
(Font)Usability.RESOURCE_BUNDLE.handleGetObject("JPanelUpgradeTypeScreen.ElementLabelFont");
推荐答案
在一个类中，我定义了以下函数，每当我需要访问与可用性相关的值时，我都会调用这些函数.所有与可用性相关的值都存储在一个公共位置(属性文件).
In a class I've defined the following functions, which I call whenever I need to access the usability related valus. All the usability related values are stored at a common place (properties file).
private static final String BUNDLE_NAME = "com.testApp.resources.properties.Usability";
private static final ResourceBundle RESOURCE_BUNDLE = ResourceBundle.getBundle(BUNDLE_NAME);
public static Font getFont(String key){
Font value = null;
try {
String fontName = (String) RESOURCE_BUNDLE.getString(key+ ".Name");
Integer fontStyle = Integer.parseInt(RESOURCE_BUNDLE.getString(key+ ".Style"));
Integer fontSize = Integer.parseInt(RESOURCE_BUNDLE.getString(key+ ".Size"));
value = new Font(fontName, fontStyle, fontSize);
} catch (MissingResourceException e) {
value = new Font("Tahoma", Font.PLAIN, 11);
}catch (NullPointerException npe) {
value = new Font("Tahoma", Font.PLAIN, 11);
}
return value;
}
public static Color getColor(String key){
Color value = null;
try {
Integer R = Integer.parseInt(RESOURCE_BUNDLE.getString(key+ ".R"));
Integer G = Integer.parseInt(RESOURCE_BUNDLE.getString(key+ ".G"));
Integer B = Integer.parseInt(RESOURCE_BUNDLE.getString(key+ ".B"));
value = new Color(R, G, B);
} catch (MissingResourceException e) {
// value = new Color("Tahoma", Font.PLAIN, 11);
}catch (NullPointerException npe) {
// value = new Color("Tahoma", Font.PLAIN, 11);
}
return value;
}
public static Dimension getDimension(String key){
Dimension value = null;
try {
Integer X = Integer.parseInt(RESOURCE_BUNDLE.getString(key+ ".X"));
Integer Y = Integer.parseInt(RESOURCE_BUNDLE.getString(key+ ".Y"));
value = new Dimension(X, Y);
} catch (MissingResourceException e) {
// value = new Color("Tahoma", Font.PLAIN, 11);
}catch (NullPointerException npe) {
// value = new Color("Tahoma", Font.PLAIN, 11);
}
return value;
}
}
在我为可用性相关值维护的属性文件中，属性定义如下:
In properties file which I'm maintaining for usability related values the properties are defined as below:
#BLACK
ElementLabelFont.Color.R=4
ElementLabelFont.Color.G=4
ElementLabelFont.Color.B=4
#ScreenPanel dimension
ScreenPanel.Dimension.X=632
ScreenPanel.Dimension.Y=625
#Font of jCheckBoxYesAgreement
JPanelPreUpgradeStepsScreen.jCheckBoxYesAgreement.Font.Name=Tahoma
JPanelPreUpgradeStepsScreen.jCheckBoxYesAgreement.Font.Style=0
JPanelPreUpgradeStepsScreen.jCheckBoxYesAgreement.Font.Size=12
这篇关于如何使用 ResoucesBundles 在属性文件中存储与可用性相关的值(字体、尺寸、颜色...)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
