java訪問https網頁
Ⅰ java https怎麼打開
不清楚你們用weblogic/tomcat或是其他web容器
tomcat的https配置網上有詳細的介紹
自己搜索就行了
weblogic直接打開ssl埠就行
重要的是證書的申請
看用什麼證書了
申請完成以後自己用jdk的keytool命令導入下
扔到web容器裡面，差不多就行了！
Ⅱ JAVA怎樣調用https類型的webservice
方法/步驟
第
一步按照Axis生成本地訪問客戶端，完成正常的webservice調用的開發，這里的細節我就不再描述，重點說明和http不同的地方-證書的生成和
使用。這里假設需要訪問的網址是https://www.abc.com
，那麼就需要生成網址的安全證書設置到系統屬性中，並且需要在調用代碼前。如下圖
第二步就是介紹怎樣生成證書，先寫一個InstallCert.java類放到自己電腦的D盤根目錄下，（注意這個類是沒有包名的）類中代碼如下：
/**
*
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.security.KeyStore;
import java.security.MessageDigest;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;
public class InstallCert {
public static void main(String[] args) throws Exception {
String host;
int port;
char[] passphrase;
if ((args.length == 1) || (args.length == 2)) {
String[] c = args[0].split(":");
host = c[0];
port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
String p = (args.length == 1) ? "changeit" : args[1];
passphrase = p.toCharArray();
} else {
System.out
.println("Usage: java InstallCert <host>[:port] [passphrase]");
return;
}
File file = new File("jssecacerts");
if (file.isFile() == false) {
char SEP = File.separatorChar;
File dir = new File(System.getProperty("java.home") + SEP + "lib"
+ SEP + "security");
file = new File(dir, "jssecacerts");
if (file.isFile() == false) {
file = new File(dir, "cacerts");
}
}
System.out.println("Loading KeyStore " + file + "...");
InputStream in = new FileInputStream(file);
KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
ks.load(in, passphrase);
in.close();
SSLContext context = SSLContext.getInstance("TLS");
TrustManagerFactory tmf = TrustManagerFactory
.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(ks);
X509TrustManager defaultTrustManager = (X509TrustManager) tmf
.getTrustManagers()[0];
SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
context.init(null, new TrustManager[] { tm }, null);
SSLSocketFactory factory = context.getSocketFactory();
System.out
.println("Opening connection to " + host + ":" + port + "...");
SSLSocket socket = (SSLSocket) factory.createSocket(host, port);
socket.setSoTimeout(10000);
try {
System.out.println("Starting SSL handshake...");
socket.startHandshake();
socket.close();
System.out.println();
System.out.println("No errors, certificate is already trusted");
} catch (SSLException e) {
System.out.println();
e.printStackTrace(System.out);
}
X509Certificate[] chain = tm.chain;
if (chain == null) {
System.out.println("Could not obtain server certificate chain");
return;
}
BufferedReader reader = new BufferedReader(new InputStreamReader(
System.in));
System.out.println();
System.out.println("Server sent " + chain.length + " certificate(s):");
System.out.println();
MessageDigest sha1 = MessageDigest.getInstance("SHA1");
MessageDigest md5 = MessageDigest.getInstance("MD5");
for (int i = 0; i < chain.length; i++) {
X509Certificate cert = chain[i];
System.out.println(" " + (i + 1) + " Subject "
+ cert.getSubjectDN());
System.out.println(" Issuer " + cert.getIssuerDN());
sha1.update(cert.getEncoded());
System.out.println(" sha1 " + toHexString(sha1.digest()));
md5.update(cert.getEncoded());
System.out.println(" md5 " + toHexString(md5.digest()));
System.out.println();
}
System.out
.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
String line = reader.readLine().trim();
int k;
try {
k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
} catch (NumberFormatException e) {
System.out.println("KeyStore not changed");
return;
}
X509Certificate cert = chain[k];
String alias = host + "-" + (k + 1);
ks.setCertificateEntry(alias, cert);
OutputStream out = new FileOutputStream("jssecacerts");
ks.store(out, passphrase);
out.close();
System.out.println();
System.out.println(cert);
System.out.println();
System.out
.println("Added certificate to keystore 'jssecacerts' using alias '"
+ alias + "'");
}
private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();
private static String toHexString(byte[] bytes) {
StringBuilder sb = new StringBuilder(bytes.length * 3);
for (int b : bytes) {
b &= 0xff;
sb.append(HEXDIGITS[b >> 4]);
sb.append(HEXDIGITS[b & 15]);
sb.append(' ');
}
return sb.toString();
}
private static class SavingTrustManager implements X509TrustManager {
private final X509TrustManager tm;
private X509Certificate[] chain;
SavingTrustManager(X509TrustManager tm) {
this.tm = tm;
}
public X509Certificate[] getAcceptedIssuers() {
throw new UnsupportedOperationException();
}
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
throw new UnsupportedOperationException();
}
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
this.chain = chain;
tm.checkServerTrusted(chain, authType);
}
}
}
將上面的InstallCert.java編譯成InstallCert.class文件放到自己電腦的D盤根目錄下。這是正常的情況下D盤根目錄下會有3個文件，
打開cmd進入到d盤開始執行生成證書命令，我這里不便於那我的網址測試我用支付寶的網址來測試的，輸入：java InstallCert
當出現了：Enter certificate to add to trusted keystore or 'q' to quit: [1]
這行代碼時，輸入1，回車。正常執行完後在D盤根目錄下就會出現證書「jssecacerts」文件，
得到證書後將證書拷貝到$JAVA_HOME/jre/lib/security目錄下，我這里是win7系統，在嘗試的過程中需要將證書重命名為：cacerts 放進去才會有用。（這個步驟在不同的環境和操作系統下有點不同，需要注意）
Ⅲ java客戶端怎麼訪問帶有pfx格式證書的https網站（伺服器）呢，
使用HttpURLConnection訪問https地址。
以下是導入JKS證書的方式，可以參考。
Stringkeystorefile="file";
Stringkeystorepw="password";
Stringkeypw="password";
KeyStorekeystore=KeyStore.getInstance("JKS");
keystore.load(newFileInputStream(keystorefile),keystorepw.toCharArray());
=KeyManagerFactory.getInstance("SunX509");
keymanagerfactory.init(keystore,keypw.toCharArray());
KeyManagerakeymanager[]=keymanagerfactory.getKeyManagers();
=TrustManagerFactory.getInstance("SunX509");
trustmanagerfactory.init(keystore);
TrustManageratrustmanager[]=trustmanagerfactory.getTrustManagers();
sslcontext=SSLContext.getInstance("TLS");
sslcontext.init(akeymanager,atrustmanager,null);
sslSocketFactory=sslcontext.getSocketFactory();
Stringurl="asdfdf";
URLtestURL=newURL(url);
=(HttpURLConnection)testURL.openConnection();
if(){
HttpsURLConnectionconn=(HttpsURLConnection)urlConnection;
conn.setSSLSocketFactory(sslSocketFactory);
}
Ⅳ 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。
Ⅳ 如何使用JAVA請求HTTPS
//處理http請求requestUrl為請求地址requestMethod請求方式，值為"GET"或"POST"
publicstaticStringhttpRequest(StringrequestUrl,StringrequestMethod,StringoutputStr){
StringBufferbuffer=null;
try{
URLurl=newURL(requestUrl);
HttpURLConnectionconn=(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){
OutputStreamos=conn.getOutputStream();
os.write(outputStr.getBytes("utf-8"));
os.close();
}
//讀取伺服器端返回的內容
InputStreamis=conn.getInputStream();
InputStreamReaderisr=newInputStreamReader(is,"utf-8");
BufferedReaderbr=newBufferedReader(isr);
buffer=newStringBuffer();
Stringline=null;
while((line=br.readLine())!=null){
buffer.append(line);
}
}catch(Exceptione){
e.printStackTrace();
}
returnbuffer.toString();
}
Ⅵ https怎麼用java進行訪問
沒有證書認證的，如果想訪問支付寶等，需要配置一個訪問的公鑰
public class HttpClient {
private String charset = "UTF-8";
private boolean safe = false;
private String url;
Map<String, String> headers = null;
public HttpClient(String url) {
this.url = url;
...
public String post(String httpStr) throws IOException {
if (this.safe) {
return this.sendhttpsReq("POST", "", headers);
.....
while ((byteread = in.read(buf)) != -1) {
result.append(buf, 0, byteread);
}
....
conn.setRequestMethod(method);
conn.setDoOutput(true);
}
});
conn.setRequestProperty("Content-Type", "text/html");
.....
}
StringBuilder result = new StringBuilder(100);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (KeyManagementException e) {
e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return "";
}
private static c
Ⅶ JAVA怎樣調用https類型的webservice
第一步按照Axis生成本地訪問客戶端，完成正常的webservice調用的開發，這里的細節我就不再描述，重點說明和http不同的地方-證書的生成和使用。這里假設需要訪問的網址是https://www.abc.com ，那麼就需要生成網址的安全證書設置到系統屬性中，並且需要在調用代碼前。如下圖
第二步就是介紹怎樣生成證書，先寫一個InstallCert.java類放到自己電腦的D盤根目錄下，（注意這個類是沒有包名的）類中代碼如下：
/**
*
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.security.KeyStore;
import java.security.MessageDigest;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;
import javax.net.ssl.X509TrustManager;
public class InstallCert {
public static void main(String[] args) throws Exception {
String host;
int port;
char[] passphrase;
if ((args.length == 1) || (args.length == 2)) {
String[] c = args[0].split(":");
host = c[0];
port = (c.length == 1) ? 443 : Integer.parseInt(c[1]);
String p = (args.length == 1) ? "changeit" : args[1];
passphrase = p.toCharArray();
} else {
System.out
.println("Usage: java InstallCert <host>[:port] [passphrase]");
return;
}
File file = new File("jssecacerts");
if (file.isFile() == false) {
char SEP = File.separatorChar;
File dir = new File(System.getProperty("java.home") + SEP + "lib"
+ SEP + "security");
file = new File(dir, "jssecacerts");
if (file.isFile() == false) {
file = new File(dir, "cacerts");
}
}
System.out.println("Loading KeyStore " + file + "...");
InputStream in = new FileInputStream(file);
KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
ks.load(in, passphrase);
in.close();
SSLContext context = SSLContext.getInstance("TLS");
TrustManagerFactory tmf = TrustManagerFactory
.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init(ks);
X509TrustManager defaultTrustManager = (X509TrustManager) tmf
.getTrustManagers()[0];
SavingTrustManager tm = new SavingTrustManager(defaultTrustManager);
context.init(null, new TrustManager[] { tm }, null);
SSLSocketFactory factory = context.getSocketFactory();
System.out
.println("Opening connection to " + host + ":" + port + "...");
SSLSocket socket = (SSLSocket) factory.createSocket(host, port);
socket.setSoTimeout(10000);
try {
System.out.println("Starting SSL handshake...");
socket.startHandshake();
socket.close();
System.out.println();
System.out.println("No errors, certificate is already trusted");
} catch (SSLException e) {
System.out.println();
e.printStackTrace(System.out);
}
X509Certificate[] chain = tm.chain;
if (chain == null) {
System.out.println("Could not obtain server certificate chain");
return;
}
BufferedReader reader = new BufferedReader(new InputStreamReader(
System.in));
System.out.println();
System.out.println("Server sent " + chain.length + " certificate(s):");
System.out.println();
MessageDigest sha1 = MessageDigest.getInstance("SHA1");
MessageDigest md5 = MessageDigest.getInstance("MD5");
for (int i = 0; i < chain.length; i++) {
X509Certificate cert = chain[i];
System.out.println(" " + (i + 1) + " Subject "
+ cert.getSubjectDN());
System.out.println(" Issuer " + cert.getIssuerDN());
sha1.update(cert.getEncoded());
System.out.println(" sha1 " + toHexString(sha1.digest()));
md5.update(cert.getEncoded());
System.out.println(" md5 " + toHexString(md5.digest()));
System.out.println();
}
System.out
.println("Enter certificate to add to trusted keystore or 'q' to quit: [1]");
String line = reader.readLine().trim();
int k;
try {
k = (line.length() == 0) ? 0 : Integer.parseInt(line) - 1;
} catch (NumberFormatException e) {
System.out.println("KeyStore not changed");
return;
}
X509Certificate cert = chain[k];
String alias = host + "-" + (k + 1);
ks.setCertificateEntry(alias, cert);
OutputStream out = new FileOutputStream("jssecacerts");
ks.store(out, passphrase);
out.close();
System.out.println();
System.out.println(cert);
System.out.println();
System.out
.println("Added certificate to keystore 'jssecacerts' using alias '"
+ alias + "'");
}
private static final char[] HEXDIGITS = "0123456789abcdef".toCharArray();
private static String toHexString(byte[] bytes) {
StringBuilder sb = new StringBuilder(bytes.length * 3);
for (int b : bytes) {
b &= 0xff;
sb.append(HEXDIGITS[b >> 4]);
sb.append(HEXDIGITS[b & 15]);
sb.append(' ');
}
return sb.toString();
}
private static class SavingTrustManager implements X509TrustManager {
private final X509TrustManager tm;
private X509Certificate[] chain;
SavingTrustManager(X509TrustManager tm) {
this.tm = tm;
}
public X509Certificate[] getAcceptedIssuers() {
throw new UnsupportedOperationException();
}
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
throw new UnsupportedOperationException();
}
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
this.chain = chain;
tm.checkServerTrusted(chain, authType);
}
}
}
將上面的InstallCert.java編譯成InstallCert.class文件放到自己電腦的D盤根目錄下。這是正常的情況下D盤根目錄下會有3個文件，如下圖：
打開cmd進入到d盤開始執行生成證書命令，我這里不便於那我的網址測試我用支付寶的網址來測試的，輸入：java InstallCert www.alipay.com 如下圖
當出現了：Enter certificate to add to trusted keystore or 'q' to quit: [1]
這行代碼時，輸入1，回車。正常執行完後在D盤根目錄下就會出現證書「jssecacerts」文件，具體如下圖：
6
得到證書後將證書拷貝到$JAVA_HOME/jre/lib/security目錄下，我這里是win7系統，在嘗試的過程中需要將證書重命名為：cacerts 放進去才會有用。（這個步驟在不同的環境和操作系統下有點不同，需要注意）
Ⅷ 如何使用JAVA請求HTTPS
//處理http請求requestUrl為請求地址requestMethod請求方式，值為"GET"或"POST"
publicstaticStringhttpRequest(StringrequestUrl,StringrequestMethod,StringoutputStr){
StringBufferbuffer=null;
try{
URLurl=newURL(requestUrl);
HttpURLConnectionconn=(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){
OutputStreamos=conn.getOutputStream();
os.write(outputStr.getBytes("utf-8"));
os.close();
}
//讀取伺服器端返回的內容
InputStreamis=conn.getInputStream();
InputStreamReaderisr=newInputStreamReader(is,"utf-8");
BufferedReaderbr=newBufferedReader(isr);
buffer=newStringBuffer();
Stringline=null;
while((line=br.readLine())!=null){
buffer.append(line);
}
}catch(Exceptione){
e.printStackTrace();
}
returnbuffer.toString();
}
Ⅸ JAVA怎樣調用https類型的webservice
使用httpurlconnection就可以了
URL url = new URL("Ipaddress");
URLConnection rulConnection = url.openConnection();
// 此處的urlConnection對象實際上是根據URL的
// 請求協議(此處是http)生成的URLConnection類
// 的子類HttpURLConnection,故此處最好將其轉化
// 為HttpURLConnection類型的對象,以便用到
// HttpURLConnection更多的API.如下:
HttpURLConnection httpUrlConnection = (HttpURLConnection) rulConnection;
// 設置是否向httpUrlConnection輸出，因為這個是post請求，參數要放在
// http正文內，因此需要設為true, 默認情況下是false;
httpUrlConnection.setDoOutput(true);
// 設置是否從httpUrlConnection讀入，默認情況下是true;
httpUrlConnection.setDoInput(true);
// Post 請求不能使用緩存
httpUrlConnection.setUseCaches(false);
// 設定傳送的內容類型是可序列化的java對象
// (如果不設此項,在傳送序列化對象時,當WEB服務默認的不是這種類型時可能拋java.io.EOFException)
httpUrlConnection.setRequestProperty("Content-type", "application/x-java-serialized-object");
// 設定請求的方法為"POST"，默認是GET
httpUrlConnection.setRequestMethod("POST");
// 連接，從上述第2條中url.openConnection()至此的配置必須要在connect之前完成，
httpUrlConnection.connect();
//向伺服器傳值都封裝在這個流中
OutputStream outStrm = httpUrlConnection.getOutputStream();
ObjectOutputStream objOutputStrm = new ObjectOutputStream(outStrm);
//如果有指定的參數列表，可以在content拼接
objOutputStrm.writeObject(new String("我是測試數據"));
objOutputStm.flush();
objOutputStm.close();
// 調用HttpURLConnection連接對象的getInputStream()函數,
// 將內存緩沖區中封裝好的完整的HTTP請求電文發送到服務端。
//執行此代碼真正發送數據到伺服器
InputStream inStrm = httpConn.getInputStream();
Ⅹ Java的HttpClient如何去支持無證書訪問https
Java的HttpClient如何去支持無證書訪問https
SSL 連接的 context 目前用那個 KeyManager, TrustManager 的實現（Sun 公司提供的）都是默認地從命令行提供的參數或代碼中明確初始化的 trust manager / key manager 中查找的，這裡面可以肯定的是這個參數在連接建立之前已經固定了的靜態形式，這要求我們把可以信任的伺服器證書的頒發機構的根證書先導入到 trust store 中然後指派給 java 程序。