关于struts.i18n.encoding的疑问
大家现在都清楚了，struts.i18n.encoding既应用于请求流也应用于返回流。但通过对源码org.apache.struts2.dispatcher.FilterDispatcher的研究发现好像只对requst指定了encode啊？大家请看源码
Java代码

  1. public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {  
  2. HttpServletRequest request = (HttpServletRequest) req;  
  3. HttpServletResponse response = (HttpServletResponse) res;  
  4. ServletContext servletContext = getServletContext();  
  5. String timerKey = "FilterDispatcher_doFilter: ";  
  6. try {  
  7. UtilTimerStack.push(timerKey);  
  8. request = prepareDispatcherAndWrapRequest(request, response);//这里是重点  
  9. //这里省略后面的代码  
  10. } finally {  
  11. try {  
  12. ActionContextCleanUp.cleanUp(req);  
  13. } finally {  
  14. UtilTimerStack.pop(timerKey);  
  15. }  
  16. }  
  17. }  
  18. }  

public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
  HttpServletRequest request = (HttpServletRequest) req;
  HttpServletResponse response = (HttpServletResponse) res;
  ServletContext servletContext = getServletContext();
  String timerKey = "FilterDispatcher_doFilter: ";
  try {
  UtilTimerStack.push(timerKey);
  request = prepareDispatcherAndWrapRequest(request, response);//这里是重点
  //这里省略后面的代码
  } finally {
  try {
  ActionContextCleanUp.cleanUp(req);
  } finally {
  UtilTimerStack.pop(timerKey);
  }
  }
  }
}

 

  prepareDispatcherAndWrapRequest
Java代码

  1. protected HttpServletRequest prepareDispatcherAndWrapRequest(HttpServletRequest request, HttpServletResponse response) throws  
  2. ServletException {  
  3. Dispatcher du = Dispatcher.getInstance();  
  4. if (du == null) {  
  5. Dispatcher.setInstance(dispatcher);  
  6. dispatcher.prepare(request, response);//这里是重点  
  7. } else {  
  8. dispatcher = du;  
  9. }  
  10. //省略了一些代码  
  11. return request;  
  12. }  

protected HttpServletRequest prepareDispatcherAndWrapRequest(HttpServletRequest request, HttpServletResponse response) throws 
ServletException {
  Dispatcher du = Dispatcher.getInstance();
  if (du == null) {
  Dispatcher.setInstance(dispatcher);
  dispatcher.prepare(request, response);//这里是重点
  } else {
  dispatcher = du;
  }
  //省略了一些代码
  return request;
}

  prepare
Java代码

  1. public void prepare(HttpServletRequest request, HttpServletResponse response) {  
  2. String encoding = null;  
  3. if (defaultEncoding != null) {  
  4. encoding = defaultEncoding;  
  5. }  
  6. //省略了一些代码  
  7. if (encoding != null) {