显然问题仍然存在，它的根源在javax.faces.component.UIComponent 类中，特别是在findComponentResourceBundleLocaleMatch 方法中。截图如下
private Resource findComponentResourceBundleLocaleMatch(FacesContext context,
String resourceName, String libraryName) {
Resource result = null;
ResourceBundle resourceBundle = null;
int i;
if (-1 != (i = resourceName.lastIndexOf("."))) {
resourceName = resourceName.substring(0, i) +
".properties"; //THE PROBLEM IS HERE
if (null != context) {
result = context.getApplication().getResourceHandler().
createResource(resourceName, libraryName);
InputStream propertiesInputStream = null;
try {
propertiesInputStream = result.getInputStream();
resourceBundle = new PropertyResourceBundle(propertiesInputStream);
} catch (IOException ex) {
Logger.getLogger(UIComponent.class.getName()).log(Level.SEVERE, null, ex);
} finally{
if(null != propertiesInputStream){
try{
propertiesInputStream.close();
} catch(IOException ioe){
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(Level.SEVERE, null, ioe);
}
}
}
}
}
}
result = (null != resourceBundle) ? result : null;
return result;
}
您可以在带有“问题在这里”的注释的行中看到它。正是当它寻找要加载的属性文件时，它不尊重任何语言和/或国家代码。它总是加载一个默认资源。
可能的解决方案
'problematic' 方法是从同一类的另一个方法 getResourceBundleMap 调用的，并且您感兴趣的部分代码用注释标记（第 1000 行）
// Step 2: if this is a composite component, look for a
// ResourceBundle as a Resource
这并不奇怪，因为您需要一个复合组件。因此解决方案是为您的复合组件定义一个支持组件类并重新定义resourceBundleMap 加载。您可能会在下面找到仅尊重语言的实现，这意味着它适用于 componentName_en.properties 和 componentName_de.properties 等文件，但不适用于 componentName_zh_CN.properties
您的 .properties 文件应与组件定义位于同一目录中
testComponent.properties
testComponent_de.properties
testComponent_en.properties
testComponent_fr.properties
在你的组件中testComponent.xhtml在componentType属性中指定一个定义类。
<cc:interface componentType="test.component">
....
</cc:interface>
组件可能如下所示。我主要使用原始代码进行了几次更改。想法是覆盖有问题的方法，并使用代码尝试首先读取指定语言的属性文件，如果找不到，则读取默认的。
@FacesComponent("test.component")
public class TestComponent extends UINamingContainer {
private static final String PROPERTIES_EXT = ".properties";
private Logger LOGGER = <use one you like>;
private Map<String, String> resourceBundleMap = null;
@Override
public Map<String, String> getResourceBundleMap() {
ResourceBundle resourceBundle = null;
if (null == resourceBundleMap) {
FacesContext context = FacesContext.getCurrentInstance();
UIViewRoot root = context.getViewRoot();
Locale currentLocale = null;
if (null != context) {
if (null != root) {
currentLocale = root.getLocale();
}
}
if (null == currentLocale) {
currentLocale = Locale.getDefault();
}
if (this.getAttributes().containsKey(Resource.COMPONENT_RESOURCE_KEY)) {
Resource ccResource = (Resource)
this.getAttributes().get(Resource.COMPONENT_RESOURCE_KEY);
if (null != ccResource) {
InputStream propertiesInputStream = null;
try {
propertiesInputStream = ccResource.getInputStream();
resourceBundle = findComponentResourceBundleLocaleMatch(ccResource.getResourceName(),
ccResource.getLibraryName(), currentLocale.getLanguage());
} catch (IOException ex) {
LOGGER.error(null, ex);
} finally {
if (null != propertiesInputStream) {
try {
propertiesInputStream.close();
} catch (IOException ioe) {
LOGGER.error(null, ioe);
}
}
}
}
}
if (null != resourceBundle) {
final ResourceBundle bundle = resourceBundle;
resourceBundleMap =
new Map() {
// this is an immutable Map
public String toString() {
StringBuffer sb = new StringBuffer();
Iterator<Map.Entry<String, Object>> entries =
this.entrySet().iterator();
Map.Entry<String, Object> cur;
while (entries.hasNext()) {
cur = entries.next();
sb.append(cur.getKey()).append(": ").append(cur.getValue()).append('\n');
}
return sb.toString();
}
// Do not need to implement for immutable Map
public void clear() {
throw new UnsupportedOperationException();
}
public boolean containsKey(Object key) {
boolean result = false;
if (null != key) {
result = (null != bundle.getObject(key.toString()));
}
return result;
}
public boolean containsValue(Object value) {
Enumeration<String> keys = bundle.getKeys();
boolean result = false;
while (keys.hasMoreElements()) {
Object curObj = bundle.getObject(keys.nextElement());
if ((curObj == value) ||
((null != curObj) && curObj.equals(value))) {
result = true;
break;
}
}
return result;
}
public Set<Map.Entry<String, Object>> entrySet() {
HashMap<String, Object> mappings = new HashMap<String, Object>();
Enumeration<String> keys = bundle.getKeys();
while (keys.hasMoreElements()) {
String key = keys.nextElement();
Object value = bundle.getObject(key);
mappings.put(key, value);
}
return mappings.entrySet();
}
@Override
public boolean equals(Object obj) {
return !((obj == null) || !(obj instanceof Map))
&& entrySet().equals(((Map) obj).entrySet());
}
public Object get(Object key) {
if (null == key) {
return null;
}
try {
return bundle.getObject(key.toString());
} catch (MissingResourceException e) {
return "???" + key + "???";
}
}
public int hashCode() {
return bundle.hashCode();
}
public boolean isEmpty() {
Enumeration<String> keys = bundle.getKeys();
return !keys.hasMoreElements();
}
public Set keySet() {
Set<String> keySet = new HashSet<String>();
Enumeration<String> keys = bundle.getKeys();
while (keys.hasMoreElements()) {
keySet.add(keys.nextElement());
}
return keySet;
}
// Do not need to implement for immutable Map
public Object put(Object k, Object v) {
throw new UnsupportedOperationException();
}
// Do not need to implement for immutable Map
public void putAll(Map t) {
throw new UnsupportedOperationException();
}
// Do not need to implement for immutable Map
public Object remove(Object k) {
throw new UnsupportedOperationException();
}
public int size() {
int result = 0;
Enumeration<String> keys = bundle.getKeys();
while (keys.hasMoreElements()) {
keys.nextElement();
result++;
}
return result;
}
public java.util.Collection values() {
ArrayList<Object> result = new ArrayList<Object>();
Enumeration<String> keys = bundle.getKeys();
while (keys.hasMoreElements()) {
result.add(
bundle.getObject(keys.nextElement()));
}
return result;
}
};
}
if (null == resourceBundleMap) {
resourceBundleMap = Collections.EMPTY_MAP;
}
}
return resourceBundleMap;
}
private ResourceBundle findComponentResourceBundleLocaleMatch(String resourceName, String libraryName, String lng) {
FacesContext context = FacesContext.getCurrentInstance();
ResourceBundle resourceBundle = null;
int i;
if (-1 != (i = resourceName.lastIndexOf("."))) {
if (null != context) {
InputStream propertiesInputStream = null;
try {
propertiesInputStream = getResourceInputStream(context, resourceName.substring(0, i), libraryName, lng);
resourceBundle = new PropertyResourceBundle(propertiesInputStream);
} catch (IOException ex) {
LOGGER.error(null, ex);
} finally {
if (null != propertiesInputStream) {
try {
propertiesInputStream.close();
} catch (IOException ioe) {
LOGGER.error(null, ioe);
}
}
}
}
}
return resourceBundle;
}
private InputStream getResourceInputStream(FacesContext context, final String resourceName, String libraryName, String lng) throws IOException {
InputStream propertiesInputStream = null;
propertiesInputStream = getPropertiesResourceInputStream(context, String.format("%s_%s%s", resourceName, lng, PROPERTIES_EXT), libraryName);
if (null == propertiesInputStream) {
propertiesInputStream = getPropertiesResourceInputStream(context, resourceName + PROPERTIES_EXT, libraryName);
}
return propertiesInputStream;
}
private InputStream getPropertiesResourceInputStream(FacesContext context, final String resourceName, String libraryName) throws IOException {
Resource result = context.getApplication().getResourceHandler().createResource(resourceName, libraryName);
if (null == result) {
return null;
}
return result.getInputStream();
}
}
完成。
但这显然是 Mojarra 中的一个错误，我希望它会尽快修复。仔细查看与复合组件相关的代码会发现，组件的默认 .properties 文件被读取了两次，我想这也不是一个好主意，但这是另一回事了。
附言。如果您愿意，您也可以轻松调整 te 代码以尊重国家/地区代码。