public void execute() {
client = new HttpClient();
// if (requestType.equals("GET")) {
// Instantiate a GET HTTP method
// HttpMethod method = new GetMethod(apiUrl);
// if (!authentication.equals("")) {
// method.setRequestHeader("Authorization", "basic " + authentication);
// }
try {
int statusCode = client.executeMethod(method);
System.out.println("QueryString>>> " + apiUrl);
System.out.println("Status Text>>>" + HttpStatus.getStatusText(statusCode));
// Get data as a String
System.out.println(method.getResponseBodyAsString());
// OR as a byte array
byte[] res = method.getResponseBody();
// write to file
FileOutputStream fos = new FileOutputStream("donepage.html");
fos.write(res);
// release connection
method.releaseConnection();
} catch (IOException e) {
e.printStackTrace();
}
// }
}
protected void construct(String legalurl) throws HTTPException {
this.legalurl = legalurl;
try {
sessionClient = new HttpClient(connmgr);
HttpClientParams clientparams = sessionClient.getParams();
// Allow (circular) redirects
clientparams.setParameter(ALLOW_CIRCULAR_REDIRECTS, true);
clientparams.setParameter(MAX_REDIRECTS, 25);
if (globalSoTimeout > 0) setSoTimeout(globalSoTimeout);
if (globalConnectionTimeout > 0) setConnectionTimeout(globalConnectionTimeout);
if (globalAgent != null) setUserAgent(globalAgent); // May get overridden by setUserAgent
setAuthenticationPreemptive(globalauthpreemptive);
setProxy();
if (TESTING) HTTPSession.track(this);
} catch (Exception e) {
throw new HTTPException("url=" + legalurl, e);
}
}
// ���� URL ָ�����ҳ
public String downloadFile(String url) {
String filePath = null;
// 1.���� HttpClinet��������
HttpClient httpClient = new HttpClient();
// ���� HTTP���ӳ�ʱ 5s
httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(5000);
// 2.���� GetMethod��������
GetMethod getMethod = new GetMethod(url);
// ���� get����ʱ 5s
getMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, 5000);
// �����������Դ���
getMethod
.getParams()
.setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler());
// 3.ִ��GET����
try {
int statusCode = httpClient.executeMethod(getMethod);
// �жϷ��ʵ�״̬��
if (statusCode != HttpStatus.SC_OK) {
System.err.println("Method failed: " + getMethod.getStatusLine());
filePath = null;
}
// 4.���� HTTP ��Ӧ����
byte[] responseBody = getMethod.getResponseBody(); // ��ȡΪ�ֽ�����
// ������ҳ url ���ɱ���ʱ���ļ���
filePath =
"temp\\" + getFileNameByUrl(url, getMethod.getResponseHeader("Content-Type").getValue());
File file = new File(filePath);
if (!file.getParentFile().exists()) {
file.getParentFile().mkdir();
}
saveToLocal(responseBody, filePath);
} catch (HttpException e) {
// �����������쳣��������Э�鲻�Ի��߷��ص�����������
System.out.println("�������http��ַ�Ƿ���ȷ");
e.printStackTrace();
} catch (IOException e) {
// ���������쳣
e.printStackTrace();
} finally {
// �ͷ�����
getMethod.releaseConnection();
}
return filePath;
}
// All proxy activity goes thru here
void setProxy(Proxy proxy) {
if (sessionClient == null) return;
if (proxy != null && proxy.host != null)
sessionClient.getHostConfiguration().setProxy(proxy.host, proxy.port);
}
public void clearState() {
sessionClient.getState().clearCookies();
sessionClient.getState().clearCredentials();
}
public void setMaxRedirects(int n) {
HttpClientParams clientparams = sessionClient.getParams();
clientparams.setParameter(MAX_REDIRECTS, n);
}
public Cookie[] getCookies() {
if (sessionClient == null) return null;
Cookie[] cookies = sessionClient.getState().getCookies();
return cookies;
}
public String getCookiePolicy() {
return sessionClient == null ? null : sessionClient.getParams().getCookiePolicy();
}
public void setConnectionTimeout(int timeout) {
sessionClient.setConnectionTimeout(timeout);
}
public void setSoTimeout(int timeout) {
sessionClient.getParams().setSoTimeout(timeout);
}
public void setAuthenticationPreemptive(boolean tf) {
if (sessionClient != null) sessionClient.getParams().setAuthenticationPreemptive(tf);
}
public void setUserAgent(String agent) {
useragent = agent;
if (useragent != null && sessionClient != null)
sessionClient.getParams().setParameter(USER_AGENT, useragent);
}
public static Cookie[] getGlobalCookies() {
HttpClient client = new HttpClient(connmgr);
Cookie[] cookies = client.getState().getCookies();
return cookies;
}