需求是這樣的：
一、界面上要有這樣幾種代理類型可以選。
1.HTTP代理
2.Socks代理
3.不使用代理（直連）
4.使用瀏覽器設(shè)置（瀏覽器也是HTTP、Socks、直連三種）。
可參考QQ登錄設(shè)置里的代理能，其實跟qq的代理功能是一樣的。
二、測試使用所填寫的代理配置信息是否可連接
三、記錄用戶上次選擇的代理配置，默認(rèn)使用用戶上次使用的代理配置進行網(wǎng)絡(luò)連接。
程序運行環(huán)境是WindowsXP、Windows7、Windows8系統(tǒng)。
使用的技術(shù)為Java7，Swing，CXF。
難點：
1.如何進行全居的代理設(shè)置：
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/** * 網(wǎng)絡(luò)代理Bean * * @author tang */public class NetworkBean implements Serializable { private static final long serialVersionUID = 1L; // private static sun.misc.BASE64Encoder base64Encoder = new sun.misc.BASE64Encoder(); private Proxy.Type type;// 代理類型 private String address;// ip 地址 private String port;// 端口號 private String username;// 代理服務(wù)器用戶名 private String password;// 代理服務(wù)器用戶密碼 private String domain;// 域 private String typeText;// 代理類型顯示的文本 public NetworkBean() { } public NetworkBean(Type type, String address, String port, String username, String password) { this.type = type; this.address = address; this.port = port; this.username = username; this.password = password; } public NetworkBean(Type type, String address, String port, String username, String password, String domain) { super(); this.type = type; this.address = address; this.port = port; this.username = username; this.password = password; this.domain = domain; } public Proxy.Type getType() { return type; } public void setType(Proxy.Type type) { this.type = type; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public String getPort() { return port; } public void setPort(String port) { this.port = port; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getDomain() { return domain; } public void setDomain(String domain) { this.domain = domain; } public String getTypeText() { return typeText; } public void setTypeText(String typeText) { this.typeText = typeText; } /** * return domain + "\" + username */ public String getDomainAndUsername() { return (Utils.toString(domain).trim().isEmpty()) ? username : domain.trim() + "\\" + username; } /** * return domain + "\" + username + ":" + password */ public String getDomainAndUsernameAndPassword() { return getDomainAndUsername() + ":" + password; } /** * return username + ":" + password */ public String getUsernameAndPassword() { return username + ":" + password; } /** * return (domain + "\" + username + ":" + password) to 64 bit */ public String getDomainAndUsernameAndPassword64() { return org.apache.commons.codec.binary.Base64.encodeBase64String(getDomainAndUsernameAndPassword().getBytes()); } @Override public String toString() { return "NetworkBean [type=" + type + ", typeText=" + typeText + ", address=" + address + ", port=" + port + ", username=" + username + ", password=" + password + ", domain=" + domain + "]"; }} |
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/** * 根據(jù)指定的代理信息設(shè)置系統(tǒng)全局的網(wǎng)絡(luò)代理 * * @param networkBean */ public static void setNetworkProxyBySystem(NetworkBean networkBean) { System.out.println("System Set Proxy : " + networkBean); if (isUserProxy(networkBean)) { if (networkBean.getType() == Proxy.Type.SOCKS) { System.getProperties().remove("http.proxyHost"); System.getProperties().remove("http.proxyPort"); System.getProperties().setProperty("socksProxyHost", networkBean.getAddress()); System.getProperties().setProperty("socksProxyPort", networkBean.getPort()); } else { System.getProperties().setProperty("http.proxyHost", networkBean.getAddress()); System.getProperties().setProperty("http.proxyPort", networkBean.getPort()); } Authenticator.setDefault(new BairuiAuthenticator(networkBean.getDomainAndUsername(), networkBean.getPassword())); } else if (networkBean != null) { System.getProperties().remove("proxySet"); System.getProperties().remove("socksProxySet"); System.getProperties().remove("http.proxyHost"); System.getProperties().remove("http.proxyPort"); System.getProperties().remove("socksProxyHost"); System.getProperties().remove("socksProxyPort"); } } /** * 網(wǎng)絡(luò)用戶名密碼校驗提供者 */ public static class BairuiAuthenticator extends Authenticator { private String username, password; public BairuiAuthenticator(String username, String password) { this.username = username; this.password = password; } protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(username, password == null ? null : password.toCharArray()); } } |
2.如何讓CXF的Service使用系統(tǒng)的代理：
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/** * 為WebService接口添加網(wǎng)絡(luò)代理支持：httpClientPolicy.setAllowChunking(false); * * @param client */ public static void setWebServiceSupportProxy(Client client) { HTTPConduit conduit = (HTTPConduit) client.getConduit(); HTTPClientPolicy httpClientPolicy = new HTTPClientPolicy(); httpClientPolicy.setAllowChunking(false); conduit.setClient(httpClientPolicy); } |
3.使用瀏覽器設(shè)置：
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/** * 讀取用戶注冊表獲取瀏覽器的代理設(shè)置 * * @return 該方法不會返回null值也不會拋出異常 */ public static NetworkBean getBrowserProxy() { NetworkBean networkBean = new NetworkBean(); networkBean.setTypeText(typeTexts[3]); networkBean.setType(Proxy.Type.DIRECT); String key = "reg query \"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings\"";// 注冊表瀏覽器代理key try { Process exec = Runtime.getRuntime().exec(key); try (InputStreamReader i = new InputStreamReader(exec.getInputStream()); BufferedReader ir = new BufferedReader(i)) { for (String line = ir.readLine(); line != null; line = ir.readLine()) { if (line.indexOf("ProxyServer") >= 0) { String[] split1 = line.split(" "); if (split1.length > 3) { String[] split2 = split1[3].trim().split(":"); if (split2.length > 1) { if (!Utils.toString(split2[0]).isEmpty() && !Utils.toString(split2[1]).isEmpty()) { networkBean.setAddress(split2[0]); networkBean.setPort(split2[1]); networkBean.setType(Proxy.Type.HTTP); break; } } } } } } catch (Exception e) { e.printStackTrace(); } } catch (Exception e) {// 從注冊表讀取失敗 e.printStackTrace(); } return networkBean; } |
4.測試代理是否可用
因為程序中使用了服務(wù)器的兩個不同的端口，所以需要測試兩個端口是否都可連。
如果使用了多臺服務(wù)器，更加需要分別測試了。
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/** * 測試網(wǎng)絡(luò)代理是否能通過連接,如果不通過拋出異常 * * @throws Exception */ private static void testNetworkProxy() throws Exception { testWebService(); testURLConnection(); } /** * 測試CXF Service接口50367端口 * * @param networkBean * @throws Exception */ public static void testWebService() throws Exception { JcptLoginService service = WebServiceUtils.getService(JcptLoginService.class, GeneralWebServiceAddress.LOGIN_SERVICE_URL_ADD); String result = service.getLoginPicture(); System.out.println(result); } /** * 從HttpURLConnection對象讀取指定字符，如果不匹配則拋出異常 * * @param connection * @throws Exception */ private static void checkConnectionContent(HttpURLConnection connection) throws Exception { try (InputStream inputStream = connection.getInputStream()) { byte[] b = new byte[1024]; boolean success = false; StringBuffer sb = new StringBuffer(); for (int i = inputStream.read(b); i > 0; i = inputStream.read(b)) { String tempStr = new String(b, 0, i); sb.append(tempStr); if (tempStr.indexOf("3,file not found") >= 0) {// service固定返回這個字符串，如果service作了更改此處也應(yīng)更改 success = true; break; } } if (!success) { String str = sb.toString(); if (str.length() > 3) { char char0 = str.charAt(0); char char1 = str.charAt(1); if (Utils.isNumber(char0 + "") && char1 == ',') { success = true; } } } if (!success) { throw new RuntimeException("result content does not meet expectations."); } } catch (Exception ex) { throw ex; } } /** * 測試文件下載接口9067端口 * * @param networkBean * @throws Exception */ public static void testURLConnection() throws Exception { HttpURLConnection connection = (HttpURLConnection) new URL(GeneralWebServiceAddress.FILE_DOWN_URL_ADD + "path=").openConnection(); checkConnectionContent(connection); } |
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/** * 測試代理服務(wù)器連接 */ private void testProxyConnection() { NetworkBean readNetworkBean = NetworkProxyTool.readNetworkBean();// 先獲得正在使用的NetworkBean try { NetworkBean networkBean = createNetworkBean();// 根據(jù)用戶填寫的信息創(chuàng)建的NetworkBean對象 showTestResultDialog(NetworkProxyTool.testNetworkProxyBySystem(networkBean)); } catch (Exception ex) { showTestResultDialog(false); } NetworkProxyTool.setNetworkProxyBySystem(readNetworkBean);// 測試結(jié)束，還原原來的NetworkBean } |
5.因為java連接網(wǎng)絡(luò)時，如果使用當(dāng)前的代理連接失敗，那么就會使用操作系統(tǒng)中緩存的代理進行網(wǎng)絡(luò)連接，如何是測試連接時不使用操作系統(tǒng)緩存，但測試結(jié)束后使用操作系統(tǒng)緩存。
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/** * 設(shè)置長連接和驗證信息緩存是否開啟 * * @param keepAlive */ public static void setKeepAliveAndAuthCache(boolean keepAlive) { System.setProperty("http.keepAlive", keepAlive + "");// 設(shè)置是否開始長連接，如果為false可以防止連接被緩存（如果連接被緩存，用戶名密碼等所有信息都會被緩存） if (keepAlive) { AuthCacheValue.setAuthCache(new AuthCacheImpl()); } else { // 設(shè)置一個空的實現(xiàn)AuthCache可以防止用戶名密碼信息被緩存 AuthCacheValue.setAuthCache(new AuthCache() { public void remove(String pkey, AuthCacheValue entry) { } public void put(String pkey, AuthCacheValue value) { } public AuthCacheValue get(String pkey, String skey) { return null; } }); } } |
在登錄之前：
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NetworkProxyTool.setKeepAliveAndAuthCache(false);new.Login(); |
登錄成功后：
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NetworkProxyTool.setKeepAliveAndAuthCache(true); |
6.保存用戶的代理配置：
因為直接序列化自定義類型的對象，會存在版本問題（比如這個類的包名、類名改了，就死定了）。
所以不能直接序列化自定義類的對象，二是將自定義類對象的屬性轉(zhuǎn)成字典（Map），然后序列化map。
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/** * 讀取本地網(wǎng)絡(luò)代理設(shè)置配置文件 * * @return */ public static NetworkBean readNetworkBean() { NetworkBean networkBean = getCurrNetworkBean(readNetworkBeanMap()); if (networkBean == null) { networkBean = new NetworkBean(); networkBean.setType(Proxy.Type.DIRECT); } return networkBean; } /** * 獲取用戶上次選擇網(wǎng)絡(luò)代理設(shè)置 * * @param map * @return */ public static NetworkBean getCurrNetworkBean(Map<String, Object> map) { putBrowserProxy(map); return (NetworkBean) map.get(getTypeMapKey(map)); } /** * 將瀏覽器的信息存放入代理信息總配置map * * @param map */ private static void putBrowserProxy(Map<String, Object> map) { if (browserProxyBean == null) { browserProxyBean = getBrowserProxy(); } NetworkBean networkBeanBrowser = (NetworkBean) map.get(key_browser); if (networkBeanBrowser == null) { networkBeanBrowser = browserProxyBean; } if ((Utils.toString(browserProxyBean.getAddress()).isEmpty() || !browserProxyBean.getAddress().equals(networkBeanBrowser.getAddress())) || (Utils.toString(browserProxyBean.getPort()).isEmpty() || !browserProxyBean.getPort().equals(networkBeanBrowser.getPort()))) { networkBeanBrowser.setUsername(null); networkBeanBrowser.setPassword(null); networkBeanBrowser.setDomain(null); } networkBeanBrowser.setType(browserProxyBean.getType()); networkBeanBrowser.setTypeText(browserProxyBean.getTypeText()); networkBeanBrowser.setAddress(browserProxyBean.getAddress()); networkBeanBrowser.setPort(browserProxyBean.getPort()); map.put(key_browser, networkBeanBrowser); } |
在登錄之前：
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NetworkBean networkBean = NetworkProxyTool.readNetworkBean();NetworkProxyTool.setNetworkProxyBySystem(networkBean);NetworkProxyTool.setKeepAliveAndAuthCache(false);new.Login(); |
在用戶配置完代理點擊確定時：
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/** * 點擊確定 */ private void confirm() { if ((isHttp() || isSocks()) && !checkIpAndPortNotNull()) { return; } NetworkBean networkBean = createNetworkBean(); if (isHttp()) {// HTTP代理 if (networkBean.getDomain() != null) { networkBean.setDomain(networkBean.getDomain().trim()); } proxySettingMap.put(key_http, networkBean); proxySettingMap.put(key_proxy_type, key_http); } else if (isSocks()) {// SOCKS代理 proxySettingMap.put(key_socks, networkBean); proxySettingMap.put(key_proxy_type, key_socks); } else if (isBrowser()) { proxySettingMap.put(key_browser, networkBean); proxySettingMap.put(key_proxy_type, key_browser); } else { proxySettingMap.put(key_direct, networkBean); proxySettingMap.put(key_proxy_type, key_direct); } userCurrShowNetworkBean = networkBean; isConfirm = true; setVisible(false); NetworkProxyTool.saveNetworkProxyConfig(proxySettingMap); } |
System Properties
Java System Properties網(wǎng)絡(luò)設(shè)置有哪些key
http://docs.oracle.com/javase/7/docs/technotes/guides/net/properties.html
http://docs.oracle.com/javase/7/docs/api/java/net/doc-files/net-properties.html
Java System Properties優(yōu)先級說明
host和port比set優(yōu)先級高，也就是說set可以不用去設(shè)置。
如存在http.proxyHost和http.proxyPort時，proxySet設(shè)為false無效，系統(tǒng)仍然可以使用http代理。
存在socksProxyHost和socksProxyPort時，socksProxySet設(shè)為false無效，系統(tǒng)仍然可以使用socks代理。
http比socks優(yōu)先級高，即存在http.proxyHost和http.proxyPort時，socksProxySet、socksProxyHost、socksProxyPort都會失效，系統(tǒng)會使用http代理。
使用java.net.Proxy
如果只是單個的連接需要使用代理，那么可以采用Proxy類進行代理連接。
說明：
1.Socket只能使用socks代理不能使用http代理。
2.Socket使用使用Authenticator來進行驗證。
3.URLConnection 使用RequestProperty是只對當(dāng)前連接有效，不會緩存，Authenticator是全局性的，對所有網(wǎng)絡(luò)請求都有效，會緩存，但RequestProperty的優(yōu)先級比Authenticator高。
4.只有RequestProperty需要64位編碼，Authenticator不需要。
5.需要清除驗證緩存的，不使用驗證緩存上面已經(jīng)有代碼了，這里就不重復(fù)寫了。
6.其實，建議采用全局性的代理連接，不管是URLConnection 還是Socket 都簡單方便、統(tǒng)一。
代碼：
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NetworkBean httpBean = new NetworkBean(Proxy.Type.HTTP, "192.168.77.5", "8888", "tzc", "123", null);Proxy httpProxy = new Proxy(httpBean.getType(), new InetSocketAddress(httpBean.getAddress(), Integer.parseInt(httpBean.getPort())));NetworkBean socksBean = new NetworkBean(Proxy.Type.SOCKS, "192.168.77.5", "9999", "tzc", "123", "ttt");Proxy socksProxy = new Proxy(socksBean.getType(), new InetSocketAddress(socksBean.getAddress(), Integer.parseInt(socksBean.getPort())));URLConnection httpProxyConnection = new URL("http://www.baidu.com/").openConnection(httpProxy);//或者Authenticator.setDefault(new BairuiAuthenticator(networkBean.getDomainAndUsername(), networkBean.getPassword()));httpProxyConnection.setRequestProperty("Proxy-Authorization", "Basic "+httpBean.getDomainAndUsernameAndPassword64());URLConnection socksProxyConnection = new URL("http://www.baidu.com/").openConnection(socksProxy);//或者Authenticator.setDefault(new BairuiAuthenticator(networkBean.getDomainAndUsername(), networkBean.getPassword()));socksProxyConnection.setRequestProperty("Proxy-Authorization", "Basic "+httpBean.getDomainAndUsernameAndPassword64());Socket socket = new Socket(socksProxy);Authenticator.setDefault(new BairuiAuthenticator(networkBean.getDomainAndUsername(), networkBean.getPassword()));socket.connect(new InetSocketAddress("www.baidu.com", 5555)); |
總結(jié)
以上就是本文關(guān)于Java使用代理進行網(wǎng)絡(luò)連接方法示例的全部內(nèi)容，希望對大家學(xué)習(xí)Java有所幫助，歡迎各位瀏覽本站其他專題并隨時留言，小編會及時回復(fù)大家的。
原文鏈接：http://blog.csdn.net/u012643122/article/details/53032482
