我正在尝试在 LWUIT 中打开一个外部 HTML 文档，但我有一个例外
htmlC = new HTMLComponent(this);
htmlC.setPage(formURL);
并且该类正在实现 DocumentRequestHandler
这是方法的实现
public InputStream resourceRequested(DocumentInfo di) {
final String url = di.getUrl();
final boolean isPostRequest = di.isPostRequest();
new Thread(new Runnable() {
public void run() {
in = getExternalData(url, isPostRequest);
}
}).start();
return in;
}
private InputStream getExternalData(String url, boolean isPostRequest) {
if (url.startsWith("http://") == false) {
return getErrorStream("This handler handles http only.");
}
if (isPostRequest) {
return getErrorStream("GET requests only please!");
}
try {
connection = (HttpConnection) Connector.open(url);
connection.setRequestMethod(HttpConnection.GET);
int resCode = connection.getResponseCode();
if (resCode == connection.HTTP_OK) {
sb = new StringBuffer();
in = connection.openDataInputStream();
int chr;
while ((chr = in.read()) != -1) {
sb.append((char) chr);
}
System.out.println("sb : " + sb);
connection.close();
return in;
} else {
return getErrorStream("Error Opening HTTP Connection.");
}
} catch (IOException ex) {
ExceptionController.printExceptionData("ExternalHTMLForm", "getExternalData", ex.getMessage());
return getErrorStream(ex.getMessage());
} finally {
}
}
// To print error message incase not able to open HTML file
private InputStream getErrorStream(String err) {
err = "<html><body>" + err + "</body></html>";
ByteArrayInputStream bais = new ByteArrayInputStream(err.getBytes());
return bais;
}
我有以下例外
Uncaught exception: java.lang.UnsupportedOperationException: Not supported yet.
at com.veripark.view.ui.ExternalHTMLForm.parsingError(ExternalHTMLForm.java:233)
at com.sun.lwuit.html.HTMLComponent.streamReady(), bci=210
at com.sun.lwuit.html.HTMLComponent$2.run(HTMLComponent.java:968)