需求是这样的:
一、界面上要有这样几种代理类型可以选。
1.HTTP代理
2.Socks代理
3.不使用代理(直连)
4.使用浏览器设置(浏览器也是HTTP、Socks、直连三种)。
可参考QQ登录设置里的代理能,其实跟qq的代理功能是一样的。
二、测试使用所填写的代理配置信息是否可连接
三、记录用户上次选择的代理配置,默认使用用户上次使用的代理配置进行网络连接。
程序运行环境是WindowsXP、Windows7、Windows8系统。
使用的技术为Java7,Swing,CXF。
难点:
1.如何进行全居的代理设置:
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/**
* 网络代理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; // 代理类型
private String address; // ip 地址
private String port; // 端口号
private String username; // 代理服务器用户名
private String password; // 代理服务器用户密码
private String domain; // 域
private String typeText; // 代理类型显示的文本
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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/**
* 根据指定的代理信息设置系统全局的网络代理
*
* @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" );
}
}
/**
* 网络用户名密码校验提供者
*/
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());
}
}
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2.如何让CXF的Service使用系统的代理:
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/**
* 为WebService接口添加网络代理支持: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);
}
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3.使用浏览器设置:
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/**
* 读取用户注册表获取浏览器的代理设置
*
* @return 该方法不会返回null值也不会抛出异常
*/
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\"" ; // 注册表浏览器代理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) { // 从注册表读取失败
e.printStackTrace();
}
return networkBean;
}
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4.测试代理是否可用
因为程序中使用了服务器的两个不同的端口,所以需要测试两个端口是否都可连。
如果使用了多台服务器,更加需要分别测试了。
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/**
* 测试网络代理是否能通过连接,如果不通过抛出异常
*
* @throws Exception
*/
private static void testNetworkProxy() throws Exception {
testWebService();
testURLConnection();
}
/**
* 测试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);
}
/**
* 从HttpURLConnection对象读取指定字符,如果不匹配则抛出异常
*
* @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固定返回这个字符串,如果service作了更改此处也应更改
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;
}
}
/**
* 测试文件下载接口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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/**
* 测试代理服务器连接
*/
private void testProxyConnection() {
NetworkBean readNetworkBean = NetworkProxyTool.readNetworkBean(); // 先获得正在使用的NetworkBean
try {
NetworkBean networkBean = createNetworkBean(); // 根据用户填写的信息创建的NetworkBean对象
showTestResultDialog(NetworkProxyTool.testNetworkProxyBySystem(networkBean));
} catch (Exception ex) {
showTestResultDialog( false );
}
NetworkProxyTool.setNetworkProxyBySystem(readNetworkBean); // 测试结束,还原原来的NetworkBean
}
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5.因为java连接网络时,如果使用当前的代理连接失败,那么就会使用操作系统中缓存的代理进行网络连接,如何是测试连接时不使用操作系统缓存,但测试结束后使用操作系统缓存。
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/**
* 设置长连接和验证信息缓存是否开启
*
* @param keepAlive
*/
public static void setKeepAliveAndAuthCache( boolean keepAlive) {
System.setProperty( "http.keepAlive" , keepAlive + "" ); // 设置是否开始长连接,如果为false可以防止连接被缓存(如果连接被缓存,用户名密码等所有信息都会被缓存)
if (keepAlive) {
AuthCacheValue.setAuthCache( new AuthCacheImpl());
} else {
// 设置一个空的实现AuthCache可以防止用户名密码信息被缓存
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 ;
}
});
}
}
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在登录之前:
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NetworkProxyTool.setKeepAliveAndAuthCache( false );
new .Login();
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登录成功后:
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NetworkProxyTool.setKeepAliveAndAuthCache( true );
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6.保存用户的代理配置:
因为直接序列化自定义类型的对象,会存在版本问题(比如这个类的包名、类名改了,就死定了)。
所以不能直接序列化自定义类的对象,二是将自定义类对象的属性转成字典(Map),然后序列化map。
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/**
* 读取本地网络代理设置配置文件
*
* @return
*/
public static NetworkBean readNetworkBean() {
NetworkBean networkBean = getCurrNetworkBean(readNetworkBeanMap());
if (networkBean == null ) {
networkBean = new NetworkBean();
networkBean.setType(Proxy.Type.DIRECT);
}
return networkBean;
}
/**
* 获取用户上次选择网络代理设置
*
* @param map
* @return
*/
public static NetworkBean getCurrNetworkBean(Map<String, Object> map) {
putBrowserProxy(map);
return (NetworkBean) map.get(getTypeMapKey(map));
}
/**
* 将浏览器的信息存放入代理信息总配置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);
}
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在登录之前:
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NetworkBean networkBean = NetworkProxyTool.readNetworkBean();
NetworkProxyTool.setNetworkProxyBySystem(networkBean);
NetworkProxyTool.setKeepAliveAndAuthCache( false );
new .Login();
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在用户配置完代理点击确定时:
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/**
* 点击确定
*/
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);
}
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System Properties
Java System Properties网络设置有哪些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优先级说明
host和port比set优先级高,也就是说set可以不用去设置。
如存在http.proxyHost和http.proxyPort时,proxySet设为false无效,系统仍然可以使用http代理。
存在socksProxyHost和socksProxyPort时,socksProxySet设为false无效,系统仍然可以使用socks代理。
http比socks优先级高,即存在http.proxyHost和http.proxyPort时,socksProxySet、socksProxyHost、socksProxyPort都会失效,系统会使用http代理。
使用java.net.Proxy
如果只是单个的连接需要使用代理,那么可以采用Proxy类进行代理连接。
说明:
1.Socket只能使用socks代理不能使用http代理。
2.Socket使用使用Authenticator来进行验证。
3.URLConnection 使用RequestProperty是只对当前连接有效,不会缓存,Authenticator是全局性的,对所有网络请求都有效,会缓存,但RequestProperty的优先级比Authenticator高。
4.只有RequestProperty需要64位编码,Authenticator不需要。
5.需要清除验证缓存的,不使用验证缓存上面已经有代码了,这里就不重复写了。
6.其实,建议采用全局性的代理连接,不管是URLConnection 还是Socket 都简单方便、统一。
代码:
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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 ));
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总结
以上就是本文关于Java使用代理进行网络连接方法示例的全部内容,希望对大家学习Java有所帮助,欢迎各位浏览本站其他专题并随时留言,小编会及时回复大家的。
原文链接:http://blog.csdn.net/u012643122/article/details/53032482