使用HttpClient访问https请求
获取CloseableHttpClient对象
public static CloseableHttpClient getCloseableHttpClent() throws KeyManagementException, NoSuchAlgorithmException {
//采用绕过验证的方式处理https请求
SSLContext sslcontext = createIgnoreVerifySSL();
SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslcontext, NoopHostnameVerifier.INSTANCE);
//创建自定义的httpclient对象
HostnameVerifier hostnameVerifier = new HostnameVerifier() {
@Override
public boolean verify(String s, SSLSession sslSession) {
return true;
}
};
CloseableHttpClient client = HttpClients.custom().
setSSLHostnameVerifier(hostnameVerifier).
setSSLContext(sslcontext).
setSSLSocketFactory(sslConnectionSocketFactory).build();
return client;
}
绕过验证
public static SSLContext createIgnoreVerifySSL() throws NoSuchAlgorithmException, KeyManagementException {
SSLContext sc = SSLContext.getInstance(“SSLv3”);
// 实现一个X509TrustManager接口，用于绕过验证，不用修改里面的方法
X509TrustManager trustManager = new X509TrustManager() {
@Override
public void checkClientTrusted(
java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
String paramString) throws CertificateException {
}
@Override
public void checkServerTrusted(
java.security.cert.X509Certificate[] paramArrayOfX509Certificate,
String paramString) throws CertificateException {
}
@Override
public java.security.cert.X509Certificate[] getAcceptedIssuers() {
return null;
}
};
sc.init(null, new TrustManager[]{trustManager}, null);
return sc;
}
自己封装一个调用接口的方法 在该方法里 我们调用了getCloseableHttpClent方法 获取了一个CloseableHttpClient 对象 该对象就可以直接访问https请求
public static HttpResponse get(String requestUrl, Map<String, Object> headers) throws Exception {
HttpGet httpget = new HttpGet(requestUrl);
RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(9000).setConnectTimeout(9000).setConnectionRequestTimeout(9000).build();// 设置请求和传输超时时间
httpget.setConfig(requestConfig);
/**设置请求头**/
if (headers != null) {
Set<String> keySet = headers.keySet();
for (String key : keySet) {
httpget.addHeader(key, headers.get(key).toString());
}
}
CloseableHttpClient client = getCloseableHttpClent();
CloseableHttpResponse response = client.execute(httpget);
return response;
}
调用方法
public static void main(String[] args) throws Exception {
HttpResponse httpResponse = get(“https://www.baidu.com”, null);
if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
HttpEntity entity = httpResponse.getEntity();
if (entity != null) {
String result = EntityUtils.toString(entity, “UTF-8”);
System.out.println(result);
}
}
}
访问结果如下 百度访问通了
