之前用jdk1.7去访问https，怎么都不成功，要么成功后就是返回html代码，而不是json数据，但是用jdk1.8访问就是成功的，返回的也是json数据，由于项目搭建是jdk1.7，不能够因为https问题去升级jdk，因为会很麻烦，主要因为jdk1.7默认https 请求是TLS1不支持TLS1.2，而jdk1.8是访问没问题的，下面的jdk1.7代码做了改进之后就可以访问了。
以下jdk1.7和1.8的两种版本代码都会写上。
jdk1.7
需要加入一个jar包：
pom地址或者url地址下载
可惜下载频道上传不了资源了，也不知道为啥违反csdn规则了，暂时直接用pom下吧，如果有需要下载不到包，直接留邮箱账号就行。
<dependency>
<groupId>org.bouncycastle</groupId>
<artifactId>bcprov-jdk15on</artifactId>
<version>1.57</version>
</dependency>import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.KeyStore;
import java.security.Principal;
import java.security.SecureRandom;
import java.security.Security;
import java.security.cert.CertificateExpiredException;
import java.security.cert.CertificateFactory;
import java.util.Hashtable;
import java.util.LinkedList;
import java.util.List;
import javax.net.ssl.HandshakeCompletedListener;
import javax.net.ssl.SSLPeerUnverifiedException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSessionContext;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.security.cert.X509Certificate;
import org.bouncycastle.crypto.tls.*;
import org.bouncycastle.crypto.tls.Certificate;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
public class TLSSocketConnectionFactory extends SSLSocketFactory {
static {
if (Security.getProvider(BouncyCastleProvider.PROVIDER_NAME) == null) {
Security.addProvider(new BouncyCastleProvider());
}
}
@Override
public Socket createSocket(Socket socket, final String host, int port,
boolean arg3) throws IOException {
if (socket == null) {
socket = new Socket();
}
if (!socket.isConnected()) {
socket.connect(new InetSocketAddress(host, port));
}
final TlsClientProtocol tlsClientProtocol = new TlsClientProtocol(socket.getInputStream(), socket.getOutputStream(), new SecureRandom());
return _createSSLSocket(host, tlsClientProtocol);
}
@Override
public String[] getDefaultCipherSuites() {
return null;
}
@Override
public String[] getSupportedCipherSuites() {
return null;
}
@Override
public Socket createSocket(String host, int port) throws IOException, UnknownHostException {
throw new UnsupportedOperationException();
}
@Override
public Socket createSocket(InetAddress host, int port) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException, UnknownHostException {
return null;
}
@Override
public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException {
throw new UnsupportedOperationException();
}
private SSLSocket _createSSLSocket(final String host, final TlsClientProtocol tlsClientProtocol) {
return new SSLSocket() {
private java.security.cert.Certificate[] peertCerts;
@Override
public InputStream getInputStream() throws IOException {
return tlsClientProtocol.getInputStream();
}
@Override
public OutputStream getOutputStream() throws IOException {
return tlsClientProtocol.getOutputStream();
}
@Override
public synchronized void close() throws IOException {
tlsClientProtocol.close();
}
@Override
public void addHandshakeCompletedListener(HandshakeCompletedListener arg0) {
}
@Override
public boolean getEnableSessionCreation() {
return false;
}
@Override
public String[] getEnabledCipherSuites() {
return null;
}
@Override
public String[] getEnabledProtocols() {
return null;
}
@Override
public boolean getNeedClientAuth() {
return false;
}
@Override
public SSLSession getSession() {
return new SSLSession() {
@Override
public int getApplicationBufferSize() {
return 0;
}
@Override
public String getCipherSuite() {
throw new UnsupportedOperationException();
}
@Override
public long getCreationTime() {
throw new UnsupportedOperationException();
}
@Override
public byte[] getId() {
throw new UnsupportedOperationException();
}
@Override
public long getLastAccessedTime() {
throw new UnsupportedOperationException();
}
@Override
public java.security.cert.Certificate[] getLocalCertificates() {
throw new UnsupportedOperationException();
}
@Override
public Principal getLocalPrincipal() {
throw new UnsupportedOperationException();
}
@Override
public int getPacketBufferSize() {
throw new UnsupportedOperationException();
}
@Override
public X509Certificate[] getPeerCertificateChain() throws SSLPeerUnverifiedException {
return null;
}
@Override
public java.security.cert.Certificate[] getPeerCertificates() throws SSLPeerUnverifiedException {
return peertCerts;
}
@Override
public String getPeerHost() {
throw new UnsupportedOperationException();
}
@Override
public int getPeerPort() {
return 0;
}
@Override
public Principal getPeerPrincipal() throws SSLPeerUnverifiedException {
return null;
}
@Override
public String getProtocol() {
throw new UnsupportedOperationException();
}
@Override
public SSLSessionContext getSessionContext() {
throw new UnsupportedOperationException();
}
@Override
public Object getValue(String arg0) {
throw new UnsupportedOperationException();
}
@Override
public String[] getValueNames() {
throw new UnsupportedOperationException();
}
@Override
public void invalidate() {
throw new UnsupportedOperationException();
}
@Override
public boolean isValid() {
throw new UnsupportedOperationException();
}
@Override
public void putValue(String arg0, Object arg1) {
throw new UnsupportedOperationException();
}
@Override
public void removeValue(String arg0) {
throw new UnsupportedOperationException();
}
};
}
@Override
public String[] getSupportedProtocols() {
return null;
}
@Override
public boolean getUseClientMode() {
return false;
}
@Override
public boolean getWantClientAuth() {
return false;
}
@Override
public void removeHandshakeCompletedListener(HandshakeCompletedListener arg0) {
}
@Override
public void setEnableSessionCreation(boolean arg0) {
}
@Override
public void setEnabledCipherSuites(String[] arg0) {
}
@Override
public void setEnabledProtocols(String[] arg0) {
}
@Override
public void setNeedClientAuth(boolean arg0) {
}
@Override
public void setUseClientMode(boolean arg0) {
}
@Override
public void setWantClientAuth(boolean arg0) {
}
@Override
public String[] getSupportedCipherSuites() {
return null;
}
@Override
public void startHandshake() throws IOException {
tlsClientProtocol.connect(new DefaultTlsClient() {
@SuppressWarnings("unchecked")
@Override
public Hashtable<Integer, byte[]> getClientExtensions() throws IOException {
Hashtable<Integer, byte[]> clientExtensions = super.getClientExtensions();
if (clientExtensions == null) {
clientExtensions = new Hashtable<Integer, byte[]>();
}
//Add host_name
byte[] host_name = host.getBytes();
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final DataOutputStream dos = new DataOutputStream(baos);
dos.writeShort(host_name.length + 3);
dos.writeByte(0);
dos.writeShort(host_name.length);
dos.write(host_name);
dos.close();
clientExtensions.put(ExtensionType.server_name, baos.toByteArray());
return clientExtensions;
}
@Override
public TlsAuthentication getAuthentication() throws IOException {
return new TlsAuthentication() {
@Override
public void notifyServerCertificate(Certificate serverCertificate) throws IOException {
try {
KeyStore ks = _loadKeyStore();
CertificateFactory cf = CertificateFactory.getInstance("X.509");
List<java.security.cert.Certificate> certs = new LinkedList<java.security.cert.Certificate>();
boolean trustedCertificate = false;
for (org.bouncycastle.asn1.x509.Certificate c : ((org.bouncycastle.crypto.tls.Certificate) serverCertificate).getCertificateList()) {
java.security.cert.Certificate cert = cf.generateCertificate(new ByteArrayInputStream(c.getEncoded()));
certs.add(cert);
String alias = ks.getCertificateAlias(cert);
if (alias != null) {
if (cert instanceof java.security.cert.X509Certificate) {
try {
((java.security.cert.X509Certificate) cert).checkValidity();
trustedCertificate = true;
} catch (CertificateExpiredException cee) {
// Accept all the certs!
}
}
} else {
// Accept all the certs!
}
}
if (!trustedCertificate) {
// Accept all the certs!
}
peertCerts = certs.toArray(new java.security.cert.Certificate[0]);
} catch (Exception ex) {
ex.printStackTrace();
throw new IOException(ex);
}
}
@Override
public TlsCredentials getClientCredentials(CertificateRequest certificateRequest) throws IOException {
return null;
}
private KeyStore _loadKeyStore() throws Exception {
FileInputStream trustStoreFis = null;
try {
KeyStore localKeyStore = null;
String trustStoreType = System.getProperty("javax.net.ssl.trustStoreType") != null ? System.getProperty("javax.net.ssl.trustStoreType") : KeyStore.getDefaultType();
String trustStoreProvider = System.getProperty("javax.net.ssl.trustStoreProvider") != null ? System.getProperty("javax.net.ssl.trustStoreProvider") : "";
if (trustStoreType.length() != 0) {
if (trustStoreProvider.length() == 0) {
localKeyStore = KeyStore.getInstance(trustStoreType);
} else {
localKeyStore = KeyStore.getInstance(trustStoreType, trustStoreProvider);
}
char[] keyStorePass = null;
String str5 = System.getProperty("javax.net.ssl.trustStorePassword") != null ? System.getProperty("javax.net.ssl.trustStorePassword") : "";
if (str5.length() != 0) {
keyStorePass = str5.toCharArray();
}
localKeyStore.load(trustStoreFis, keyStorePass);
if (keyStorePass != null) {
for (int i = 0; i < keyStorePass.length; i++) {
keyStorePass[i] = 0;
}
}
}
return localKeyStore;
} finally {
if (trustStoreFis != null) {
trustStoreFis.close();
}
}
}
};
}
});
} // startHandshake
};
}
} import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.net.ssl.HttpsURLConnection;
import org.apache.commons.lang.StringUtils;
public class HttpClientUtil {
public HttpURLConnection createConnection(URI uri) throws IOException {
URL url = uri.toURL();
URLConnection connection = url.openConnection();
HttpsURLConnection httpsURLConnection = (HttpsURLConnection) connection;
httpsURLConnection
.setSSLSocketFactory(new TLSSocketConnectionFactory());
return httpsURLConnection;
}
public static String get(String url, Map<String, String> paramMap) {
List<String> list = new ArrayList<String>();
if (null != paramMap && paramMap.size() > 0) {
for (String key : paramMap.keySet()) {
list.add(key + "=" + paramMap.get(key));
}
}
String param = "";
if (null != list && list.size() > 0) {
param = StringUtils.join(list, "&");
}
HttpClientUtil httpsUrlConnectionMessageSender = new HttpClientUtil();
HttpURLConnection connection;
try {
connection = httpsUrlConnectionMessageSender
.createConnection(new URI(url));
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("GET");
connection.setUseCaches(false);
connection.setInstanceFollowRedirects(true);
connection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
connection.connect();
// POST请求
OutputStreamWriter os = null;
String json = "";
os = new OutputStreamWriter(connection.getOutputStream());
os.write(param);
os.flush();
json = getResponse(connection);
if (connection != null) {
connection.disconnect();
}
return json;
} catch (IOException e) {
e.printStackTrace();
} catch (URISyntaxException e) {
e.printStackTrace();
}
return "失败";
}
public static String get(String url, String param) {
HttpClientUtil httpsUrlConnectionMessageSender = new HttpClientUtil();
HttpURLConnection connection;
try {
connection = httpsUrlConnectionMessageSender
.createConnection(new URI(url));
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("GET");
connection.setUseCaches(false);
connection.setInstanceFollowRedirects(true);
connection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
connection.connect();
// POST请求
OutputStreamWriter os = null;
String json = "";
os = new OutputStreamWriter(connection.getOutputStream());
os.write(param);
os.flush();
json = getResponse(connection);
if (connection != null) {
connection.disconnect();
}
return json;
} catch (IOException e) {
e.printStackTrace();
} catch (URISyntaxException e) {
e.printStackTrace();
}
return "失败";
}
public static void main(String[] args) {
String url = "https://crm.zoho.com.cn/crm/private/json/Potentials/searchRecords";
Map<String, String> paramMap = new HashMap<String, String>();
paramMap.put("参数名", "值");
System.out.println(get(url, paramMap));
String param = "&参数名=值&参数名=值";
System.out.println(get(url, param));
}
public static String getResponse(HttpURLConnection Conn) throws IOException {
InputStream is;
if (Conn.getResponseCode() >= 400) {
is = Conn.getErrorStream();
} else {
is = Conn.getInputStream();
}
String response = streamToString(is, "utf-8");
/*
* String response = ""; byte buff[] = new byte[2048]; int b = 0; while
* ((b = is.read(buff, 0, buff.length)) != -1) { response += new
* String(buff, 0, b);
*
* }
*/
is.close();
return response;
}
public static String streamToString(InputStream in, String encoding) {
ByteArrayOutputStream bos = null;
try {
bos = new ByteArrayOutputStream();
byte[] arr = new byte[1024];
int len;
while (-1 != (len = in.read(arr))) {
bos.write(arr, 0, len);
}
return bos.toString(encoding);
} catch (IOException e) {
e.printStackTrace();
throw new RuntimeException("提取 requestBody 异常", e);
} finally {
if (null != bos) {
try {
bos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
jdk1.8
import org.apache.commons.lang.StringUtils;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class HttpUtils {
public static String httpPost(String urlAddress,Map<String, String> paramMap){
if(paramMap==null){
paramMap = new HashMap<String, String>();
}
String [] params = new String[paramMap.size()];
int i = 0;
for(String paramKey:paramMap.keySet()){
String param = paramKey+"="+paramMap.get(paramKey);
params[i] = param;
i++;
}
return http(urlAddress, params, "POST");
}
public static String httpGet(String urlAddress,Map<String, String> paramMap){
if(paramMap==null){
paramMap = new HashMap<String, String>();
}
String [] params = new String[paramMap.size()];
int i = 0;
for(String paramKey:paramMap.keySet()){
String param = paramKey+"="+paramMap.get(paramKey);
params[i] = param;
i++;
}
return http(urlAddress, params, "GET");
}
public static String httpPost(String urlAddress,List<String> paramList){
if(paramList==null){
paramList = new ArrayList<String>();
}
return http(urlAddress, paramList.toArray(new String[0]), "POST");
}
public static String httpGet(String urlAddress,List<String> paramList) {
return http(urlAddress, paramList.toArray(new String[0]), "GET");
}
public static String http(String urlAddress,String []params, String requestType){
URL url = null;
HttpURLConnection con =null;
BufferedReader in = null;
StringBuffer result = new StringBuffer();
try {
url = new URL(urlAddress);
con = (HttpURLConnection) url.openConnection();
con.setUseCaches(false);
con.setDoOutput(true);
con.setRequestMethod(requestType);
String paramsTemp = "";
for(String param:params){
if(StringUtils.isNotEmpty(param)){
paramsTemp+="&"+param;
}
}
byte[] b = paramsTemp.getBytes();
con.getOutputStream().write(b, 0, b.length);
con.getOutputStream().flush();
con.getOutputStream().close();
in = new BufferedReader(new InputStreamReader(con.getInputStream()));
while (true) {
String line = in.readLine();
if (line == null) {
break;
}
else {
result.append(line);
}
}
} catch (IOException e) {
e.printStackTrace();
}finally{
try {
if(in!=null){
in.close();
}
if(con!=null){
con.disconnect();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return result.toString();
}
public static void main(String[] args) {
Map<String,String> objectMap = new HashMap<>();
objectMap.put("参数","值");
HttpUtils.httpGet("url",objectMap);
}
}
二种方式都可以访问成功，亲测的
最后：在项目中遇到的几个问题也提一下，
1.有些https跨域访问，url中文需要编码的，不然也会报错，具体查看报错详情核对原因
2.中间流读取中文本来有乱码，半个文字字节读取那样的，后面屏蔽那段方法加上下面的byte流的读取方式，就没有不读取完整的问题了
任何事情，遇到困难，保持头脑清晰，谁都有麻烦事，不要遇到问题就退缩。
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