javahttps介面

⑴ 如何使用java請求HTTPS

1.寫http請求方法
[java] view plain

//處理http請求 requestUrl為請求地址 requestMethod請求方式，值為"GET"或"POST"
public static String httpRequest(String requestUrl,String requestMethod,String outputStr){
StringBuffer buffer=null;
try{
URL url=new URL(requestUrl);
HttpURLConnection conn=(HttpURLConnection)url.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod(requestMethod);
conn.connect();
//往伺服器端寫內容 也就是發起http請求需要帶的參數
if(null!=outputStr){
OutputStream os=conn.getOutputStream();
os.write(outputStr.getBytes("utf-8"));
os.close();
}
//讀取伺服器端返回的內容
InputStream is=conn.getInputStream();
InputStreamReader isr=new InputStreamReader(is,"utf-8");
BufferedReader br=new BufferedReader(isr);
buffer=new StringBuffer();
String line=null;
while((line=br.readLine())!=null){
buffer.append(line);
}
}catch(Exception e){
e.printStackTrace();
}
return buffer.toString();
}
2.測試。
[java] view plain

public static void main(String[] args){
String s=httpRequest("","GET",null);
System.out.println(s);
}
輸出結果為的源代碼，說明請求成功。
註：1).第一個參數url需要寫全地址，即前邊的http必須寫上，不能只寫這樣的。

2).第二個參數是請求方式，一般介面調用會給出URL和請求方式說明。
3).第三個參數是我們在發起請求的時候傳遞參數到所要請求的伺服器，要傳遞的參數也要看介面文檔確定格式，一般是封裝成json或xml.
4).返回內容是String類，但是一般是有格式的json或者xml。
二：發起https請求。
1.https是對鏈接加了安全證書SSL的，如果伺服器中沒有相關鏈接的SSL證書，它就不能夠信任那個鏈接，也就不會訪問到了。所以我們第一步是自定義一個信任管理器。自要實現自帶的X509TrustManager介面就可以了。
[java] view plain

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.X509TrustManager;
public class MyX509TrustManager implements 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;
}
}
註：1)需要的包都是java自帶的，所以不用引入額外的包。
2.)可以看到裡面的方法都是空的，當方法為空是默認為所有的鏈接都為安全，也就是所有的鏈接都能夠訪問到。當然這樣有一定的安全風險，可以根據實際需要寫入內容。

2.編寫https請求方法。
[java] view plain

/*
* 處理https GET/POST請求
* 請求地址、請求方法、參數
* */
public static String httpsRequest(String requestUrl,String requestMethod,String outputStr){
StringBuffer buffer=null;
try{
//創建SSLContext
SSLContext sslContext=SSLContext.getInstance("SSL");
TrustManager[] tm={new MyX509TrustManager()};
//初始化
sslContext.init(null, tm, new java.security.SecureRandom());;
//獲取SSLSocketFactory對象
SSLSocketFactory ssf=sslContext.getSocketFactory();
URL url=new URL(requestUrl);
HttpsURLConnection conn=(HttpsURLConnection)url.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestMethod(requestMethod);
//設置當前實例使用的SSLSoctetFactory
conn.setSSLSocketFactory(ssf);
conn.connect();
//往伺服器端寫內容
if(null!=outputStr){
OutputStream os=conn.getOutputStream();
os.write(outputStr.getBytes("utf-8"));
os.close();
}
//讀取伺服器端返回的內容
InputStream is=conn.getInputStream();
InputStreamReader isr=new InputStreamReader(is,"utf-8");
BufferedReader br=new BufferedReader(isr);
buffer=new StringBuffer();
String line=null;
while((line=br.readLine())!=null){
buffer.append(line);
}
}catch(Exception e){
e.printStackTrace();
}
return buffer.toString();
}
可見和http訪問的方法類似，只是多了SSL的相關處理。
3.測試。先用http請求的方法訪問，再用https的請求方法訪問，進行對比。

http訪問：
[java] view plain

public static void main(String[] args){
String s=httpRequest("","GET",null);
System.out.println(s);
}
結果為：

https訪問：

[java] view plain

public static void main(String[] args){
String s=httpsRequest("","GET",null);
System.out.println(s);
}
結果為：

可見https的鏈接一定要進行SSL的驗證或者過濾之後才能夠訪問。

三：https的另一種訪問方式——導入服務端的安全證書。
1.下載需要訪問的鏈接所需要的安全證書。 以這個網址為例。
1）在瀏覽器上訪問。

2）點擊上圖的那個打了×的鎖查看證書。

3）選擇復制到文件進行導出，我們把它導入到java項目所使用的jre的lib文件下的security文件夾中去，我的是這個路徑。D:\Program Files (x86)\Java\jre8\lib\security

註：中間需要選導出格式，就選默認的就行，還需要命名，我命名的是12306.

2.打開cmd,進入到java項目所使用的jre的lib文件下的security目錄。
3.在命令行輸入 Keytool -import -alias 12306 -file 12306.cer -keystore cacerts
4.回車後會讓輸入口令，一般默認是changeit,輸入時不顯示，輸入完直接按回車，會讓確認是否信任該證書，輸入y，就會提示導入成功。

5.導入成功後就能像請求http一樣請求https了。

測試：
[java] view plain

public static void main(String[] args){
String s=httpRequest("","GET",null);
System.out.println(s);
}
結果：
現在就可以用http的方法請求https了。
註：有時候這一步還是會出錯，那可能是jre的版本不對，我們右鍵run as——run configurations,選擇證書所在的jre之後再運行。

⑵ Java SpringMVC如何開放一個https介面

通過在tomcat的server.xml中可以配置，普通請求在8080埠上，https在8448埠上，具體的配置你可以網上找找看很多。
這樣tomcat就可以完成到調用者的數據傳輸加密。業務層無干擾。

⑶ java怎麼調用https外部介面

方法：只要New一個Map，然後把要傳遞的參數以鍵值對的形式存入Map即可。privatevoidExample(){Stringurl=地址;Mapparam=newHashMap();p.put("ParamName","ParamValue");Stringhtml=this.visitURL(url,param);}

⑷ java1.6 能訪問https的介面嗎

用兩種方式分別實現了，第一種是jdk原生的，代碼稍微多點，第二種是基於httpclient4版本的。在我的機器上，訪問同一個介面原生的性能要好很多（前者900ms，後者5.7s左右），httpclient主要性能消耗在"HttpResponse res = client.execute(post);"，大約占總執行時間的90%。

Java代碼
private static final String METHOD_POST = "POST";
private static final String DEFAULT_CHARSET = "utf-8";

public static String doPost(String url, String params, String charset, int connectTimeout, int readTimeout) throws Exception {
String ctype = "application/json;charset=" + charset;
byte[] content = {};
if(params != null){
content = params.getBytes(charset);
}

return doPost(url, ctype, content, connectTimeout, readTimeout);
}
public static String doPost(String url, String ctype, byte[] content,int connectTimeout,int readTimeout) throws Exception {
HttpsURLConnection conn = null;
OutputStream out = null;
String rsp = null;
try {
try{
SSLContext ctx = SSLContext.getInstance("TLS");
ctx.init(new KeyManager[0], new TrustManager[] {new DefaultTrustManager()}, new SecureRandom());
SSLContext.setDefault(ctx);

conn = getConnection(new URL(url), METHOD_POST, ctype);
conn.setHostnameVerifier(new HostnameVerifier() {
@Override
public boolean verify(String hostname, SSLSession session) {
return true;
}
});
conn.setConnectTimeout(connectTimeout);
conn.setReadTimeout(readTimeout);
}catch(Exception e){
log.error("GET_CONNECTOIN_ERROR, URL = " + url, e);
throw e;
}
try{
out = conn.getOutputStream();
out.write(content);
rsp = getResponseAsString(conn);
}catch(IOException e){
log.error("REQUEST_RESPONSE_ERROR, URL = " + url, e);
throw e;
}

}finally {
if (out != null) {
out.close();
}
if (conn != null) {
conn.disconnect();
}
}

return rsp;
}

private static class DefaultTrustManager implements X509TrustManager {

@Override
public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {}

@Override
public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {}

@Override
public X509Certificate[] getAcceptedIssuers() {
return null;
}

}

private static HttpsURLConnection getConnection(URL url, String method, String ctype)
throws IOException {
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
conn.setRequestMethod(method);
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestProperty("Accept", "text/xml,text/javascript,text/html");
conn.setRequestProperty("User-Agent", "stargate");
conn.setRequestProperty("Content-Type", ctype);
return conn;
}

protected static String getResponseAsString(HttpURLConnection conn) throws IOException {
String charset = getResponseCharset(conn.getContentType());
InputStream es = conn.getErrorStream();
if (es == null) {
return getStreamAsString(conn.getInputStream(), charset);
} else {
String msg = getStreamAsString(es, charset);
if (StringUtils.isEmpty(msg)) {
throw new IOException(conn.getResponseCode() + ":" + conn.getResponseMessage());
} else {
throw new IOException(msg);
}
}
}

private static String getStreamAsString(InputStream stream, String charset) throws IOException {
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(stream, charset));
StringWriter writer = new StringWriter();

char[] chars = new char[256];
int count = 0;
while ((count = reader.read(chars)) > 0) {
writer.write(chars, 0, count);
}

return writer.toString();
} finally {
if (stream != null) {
stream.close();
}
}
}

private static String getResponseCharset(String ctype) {
String charset = DEFAULT_CHARSET;

if (!StringUtils.isEmpty(ctype)) {
String[] params = ctype.split(";");
for (String param : params) {
param = param.trim();
if (param.startsWith("charset")) {
String[] pair = param.split("=", 2);
if (pair.length == 2) {
if (!StringUtils.isEmpty(pair[1])) {
charset = pair[1].trim();
}
}
break;
}
}
}

return charset;
}

Java代碼
public static JSONObject post(String url, String json) {
HttpClient client = new DefaultHttpClient();
client = WebClientDevWrapper.wrapClient(client);
HttpPost post = new HttpPost(url);
JSONObject response = null;
try {
StringEntity s = new StringEntity(json);
s.setContentEncoding("UTF-8");
s.setContentType("application/json");
post.setEntity(s);

Long startTime = System.currentTimeMillis();
HttpResponse res = client.execute(post);
System.out.println(System.currentTimeMillis() - startTime);
if (res.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
HttpEntity entity = res.getEntity();
String charset = EntityUtils.getContentCharSet(entity);
if(charset == null){
charset = "utf-8";
}
response = new JSONObject(new JSONTokener(
new InputStreamReader(entity.getContent(), charset)));
}
} catch (Exception e) {
throw new RuntimeException(e);
}
return response;
}

public static class WebClientDevWrapper {
public static HttpClient wrapClient(HttpClient base) {
try {
SSLContext ctx = SSLContext.getInstance("TLS");
X509TrustManager tm = new X509TrustManager() {
@Override
public X509Certificate[] getAcceptedIssuers() {
return null;
}

@Override
public void checkClientTrusted(
java.security.cert.X509Certificate[] chain,
String authType)
throws java.security.cert.CertificateException {

}

@Override
public void checkServerTrusted(
java.security.cert.X509Certificate[] chain,
String authType)
throws java.security.cert.CertificateException {

}
};
ctx.init(null, new TrustManager[] { tm }, null);
SSLSocketFactory ssf = new SSLSocketFactory(ctx, SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
ClientConnectionManager ccm = base.getConnectionManager();
SchemeRegistry sr = ccm.getSchemeRegistry();
sr.register(new Scheme("https", 443, ssf));
return new DefaultHttpClient(ccm, base.getParams());
} catch (Exception ex) {
ex.printStackTrace();
return null;
}
}
}

⑸ java https介面調用出錯

您這個明顯HTTPS埠不信任或不通，請檢查HTTPS鏈接是否可以直接正常信任訪問，並且進行ATS安全標准檢測，是否達到要求，相關HTTPS技術支持：網頁鏈接

⑹ java 建立雙向認證 https連接

絕對好用的。直用的這個，GOOD LUCK FOR YOU

public static String httpRequest(String requestUrl, String requestMethod, String outputStr) {
JSONObject jsonObject = null;
StringBuffer buffer = new StringBuffer();
try {
// 創建SSLContext對象，並使用我們指定的信任管理器初始化
TrustManager[] tm = { new MyX509TrustManager() };
SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
sslContext.init(null, tm, new java.security.SecureRandom());
// 從上述SSLContext對象中得到SSLSocketFactory對象
SSLSocketFactory ssf = sslContext.getSocketFactory();

URL url = new URL(requestUrl);
HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
httpUrlConn.setSSLSocketFactory(ssf);

httpUrlConn.setDoOutput(true);
httpUrlConn.setDoInput(true);
httpUrlConn.setUseCaches(false);
// 設置請求方式（GET/POST）
httpUrlConn.setRequestMethod(requestMethod);

if ("GET".equalsIgnoreCase(requestMethod))
httpUrlConn.connect();

// 當有數據需要提交時
if (null != outputStr) {
OutputStream outputStream = httpUrlConn.getOutputStream();
// 注意編碼格式，防止中文亂碼
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}

// 將返回的輸入流轉換成字元串
InputStream inputStream = httpUrlConn.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

String str = null;
while ((str = bufferedReader.readLine()) != null) {
buffer.append(str);
}
bufferedReader.close();
inputStreamReader.close();
// 釋放資源
inputStream.close();
inputStream = null;
httpUrlConn.disconnect();
System.out.println("返回的數據："+buffer.toString());
// jsonObject = JSONObject.fromObject(buffer.toString());
} catch (ConnectException ce) {
log.error("Weixin server connection timed out.");
} catch (Exception e) {
log.error("https request error:{}", e);
}
return buffer.toString();
}

⑺ java怎麼調用https介面

方法：只要New一個Map，然後把要傳遞的參數以鍵值對的形式存入Map即可。 private void Example() { String url =地址; Map param = new HashMap(); p.put("ParamName", "ParamValue"); String html = this.visitURL(url, param); }

⑻ 怎樣用java調用https介面

下面這個函數可以直接用：
public static String requsetUrl(String urls) throws Exception{
BufferedReader br = null;
String sTotalString= "";
try{
URL url = new URL(urls);
URLConnection connection = url.openConnection();
connection.setConnectTimeout(3000);
connection.setDoOutput(true);
String line = "";
InputStream l_urlStream;
l_urlStream = connection.getInputStream();

br = new BufferedReader(new InputStreamReader(l_urlStream, "UTF-8"));
while ((line = br.readLine()) != null) {
sTotalString += line + "\r\n";
}
} finally {
if(br!=null){
try {
br.close();
} catch (IOException e) {
br = null;
}
}
}
return sTotalString;
}

⑼ 如何用JAVA實現HTTPS客戶端

import java.io.*;
import java.net.*;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.*;
public class TrustSSL {
private static class TrustAnyTrustManager implements X509TrustManager {
   public void checkClientTrusted(X509Certificate[] chain, String authType)
     throws CertificateException {
   }
   public void checkServerTrusted(X509Certificate[] chain, String authType)
     throws CertificateException {
   }
   public X509Certificate[] getAcceptedIssuers() {
    return new X509Certificate[] {};
   }
}
private static class TrustAnyHostnameVerifier implements HostnameVerifier {
   public boolean verify(String hostname, SSLSession session) {
    return true;
   }
}
public static void main(String[] args) throws Exception {
   InputStream in = null;
   OutputStream out = null;
   byte[] buffer = new byte[4096];
   String str_return = "";
   try {
    SSLContext sc = SSLContext.getInstance("SSL");
    sc.init(null, new TrustManager[] { new TrustAnyTrustManager() },
      new java.security.SecureRandom());
    URL console = new URL(
      "https://192.168.1.188/test.php?username=測試");
    HttpsURLConnection conn = (HttpsURLConnection) console
      .openConnection();
    conn.setSSLSocketFactory(sc.getSocketFactory());
    conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
    conn.connect();
    InputStream is = conn.getInputStream();
    DataInputStream indata = new DataInputStream(is);
    String ret = "";
    while (ret != null) {
     ret = indata.readLine();
     if (ret != null && !ret.trim().equals("")) {
      str_return = str_return
        + new String(ret.getBytes("ISO-8859-1"), "GBK");
     }
    }
    conn.disconnect();
   } catch (ConnectException e) {
    System.out.println("ConnectException");
    System.out.println(e);
    throw e;
   } catch (IOException e) {
    System.out.println("IOException");
    System.out.println(e);
    throw e;
   } finally {
    try {
     in.close();
    } catch (Exception e) {
    }
    try {
     out.close();
    } catch (Exception e) {
    }
   }
   System.out.println(str_return);
}
}

⑽ 如何用java代碼實現https請求，我要最新的代碼，謝謝

HttpURLConnectionconn=(HttpURLConnection)newURL(url).openConnection();
BufferedReaderbufferReader=newBufferedReader(newInputStreamReader(conn.getInputStream(),"utf-8"));
StringinputLine=null;
while((inputLine=bufferReader.readLine())!=null){
buffer.append(inputLine);
}
bufferReader.close();
conn.disconnect();

System.out.println(inputLine);