方案2
import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.*;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
public class HttpRequest
{
/**
* 向指定URL发送GET方法的请求
* @param url 发送请求的URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return URL 所代表远程资源的响应结果
*/
public static String Get(String url, String param)
{
return Get(url, param, false);
}
/**
* 向指定URL发送GET方法的请求
* @param url 发送请求的URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return URL 所代表远程资源的响应结果
*/
public static String Get(String url, String param, Boolean isHttpsRequest)
{
String result = "";
BufferedReader in = null;
try
{
if (isHttpsRequest)
{
HttpRequest.Instance().TrustHpps();
}
String urlNameString = url + "?" + param;
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
connection.setRequestProperty("accept", "*/*");
connection.setRequestProperty("connection", "Keep-Alive");
connection.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 建立实际的连接
connection.connect();
// 获取所有响应头字段
Map<String, List<String>> map = connection.getHeaderFields();
// 遍历所有的响应头字段
for (String key : map.keySet())
{
System.out.println(key + "--->" + map.get(key));
}
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(
connection.getInputStream()));
String line;
while ((line = in.readLine()) != null)
{
result += line;
}
}
catch (Exception e)
{
System.out.println("发送GET请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输入流
finally
{
try
{
if (in != null)
{
in.close();
}
}
catch (Exception e2)
{
e2.printStackTrace();
}
}
return result;
}
/**
* 向指定 URL 发送POST方法的请求
* @param url 发送请求的 URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return 所代表远程资源的响应结果
*/
public static String Post(String url, String param)
{
return Post(url, param, false);
}
/**
* 向指定 URL 发送POST方法的请求
* @param url 发送请求的 URL
* @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @param isHttpsRequest 是否Https请求
* @return 所代表远程资源的响应结果
*/
public static String Post(String url, String param, Boolean isHttpsRequest)
{
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try
{
if (isHttpsRequest)
{
HttpRequest.Instance().TrustHpps();
}
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
// 设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
// 发送POST请求必须设置如下两行
conn.setDoOutput(true);
conn.setDoInput(true);
// 获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
// 发送请求参数
out.print(param);
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null)
{
result += line;
}
}
catch (Exception e)
{
System.out.println("发送 POST 请求出现异常！" + e);
e.printStackTrace();
}
// 使用finally块来关闭输出流、输入流
finally
{
try
{
if (out != null)
{
out.close();
}
if (in != null)
{
in.close();
}
}
catch (IOException ex)
{
ex.printStackTrace();
}
}
return result;
}
/**
* 信任证书管理
* */
private static TrustManager[] TrustAllCerts = new TrustManager[]
{
new X509TrustManager()
{
@Override
public void checkClientTrusted(X509Certificate[] chain,
String authType) throws CertificateException
{
// TODO Auto-generated method stub
}
@Override
public void checkServerTrusted(X509Certificate[] chain,
String authType) throws CertificateException
{
// TODO Auto-generated method stub
}
@Override
public X509Certificate[] getAcceptedIssuers()
{
// TODO Auto-generated method stub
return null;
}
}
};
/**
* 主机证书认证
* */
private class NullHostNameVerifier implements HostnameVerifier
{
/*
* (non-Javadoc)
* @see javax.net.ssl.HostnameVerifier#verify(java.lang.String,
* javax.net.ssl.SSLSession)
*/
@Override
public boolean verify(String arg0, SSLSession arg1)
{
// TODO Auto-generated method stub
return true;
}
}
private static HttpRequest _HttpRequest;
/**
* Http请求封装实例
* */
public static HttpRequest Instance()
{
if (_HttpRequest == null)
{
_HttpRequest = new HttpRequest();
}
return _HttpRequest;
}
/**
* 信任HTTPS
* */
public void TrustHpps() throws Exception
{
HttpsURLConnection
.setDefaultHostnameVerifier(new NullHostNameVerifier());
SSLContext sc = SSLContext.getInstance("TLS");
sc.init(null, HttpRequest.TrustAllCerts, new SecureRandom());
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
}
}
测试代码
String address="https网页地址";
//绕过Https证书方案2
String reslt2= HttpRequest.Get(address,null,true);
System.out.println(reslt2);
//说明请求过程中没发生异常，且网页正常返回，就说明成功绕过Https证书；紫红色部分代码是关键代码