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我实现了一个try块,做一些网络请求,但每当它抛出一个异常,例如有超时之一,android的应用程序将显示一条消息说安卓显示我自己的错误消息I来自一个异常
对不起:应用程序已经意外停止,请重试。
呈现给用户的唯一选项是强制关闭按钮。我想赶上这个异常,并简单地显示我自己的错误消息,并让用户再次尝试连接,而不是用户不得不关闭应用程序。
这里是下面的代码:
所有我想要做的是返回null一个异常被捕获,什么调用这个不断类会做自己的错误处理类似这样的后:
if(postRequest == null){ display error message}
private HttpResponseObject PostRequest() {
//int response = 0;
String responseBody = "";
HttpResponseObject response = new HttpResponseObject();
try {
Log.d(TAG, "IN POST_REQUEST_METHOD");
Log.d(TAG, "URL : " + url);
httpclient = new DefaultHttpClient();
httpclient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 1);
//httpclient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 10000);
httpclient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 5);
Log.d(TAG, "httpclient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 5000);");
post = new HttpPost(url);
// ClientConnectionRequest connRequest = new ManagedClientConnection();
// post.setConnectionRequest((ClientConnectionRequest) connRequest.getConnection(3000, TimeUnit.MILLISECONDS));
ByteArrayEntity entity = new ByteArrayEntity(data.getBytes());
entity.setChunked(true);
post.setEntity(new StringEntity(data));
HttpResponse httpResponse = httpclient.execute(post);
HttpEntity resEntity = httpResponse.getEntity();
if (resEntity != null) {
// indicate that the content of this entity is no longer
// required
response.setResponseBody(EntityUtils.toString(resEntity));
Header[] header = httpResponse.getAllHeaders();
Log.d(TAG, "httpResponse.getAllHeaders() = " + header[0].getName());
response.setResponseHeader(httpResponse.getAllHeaders().toString());
resEntity.consumeContent();
}
// release all recources from the httpClient object
httpclient.getConnectionManager().shutdown();
response.setResponseCode(httpResponse.getStatusLine().getStatusCode()) ;
Log.d(TAG, "responseBody = " + response.getResponseBody());
Log.d(TAG, "response code = " + response.getResponseCode());
Log.d(TAG, "response header = " + response.getResponseHeader());
return response;
} catch (SocketTimeoutException e) {
e.printStackTrace();
Log.d(TAG, "SocketTimeoutException e = " + e.toString());
return null;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.d(TAG, "IOException e = " + e.toString());
return null;
}
}
抛出异常的类型是java.net.SocketTimeoutException,我已经捕获了。 – jonney 2010-12-16 10:24:06
固定。就像你说的那样,我的网络代码没有什么新意,我期待着来自另一个使用这个网络代码的课程并修复它。队友的欢呼声 – jonney 2010-12-16 10:30:54