从JavaScript调用后，Applet URLConnection.connect失败（js调用ios方法）

25-02-11 15

本文将带您了解关于从JavaScript调用后，AppletURLConnection.connect失败的新内容，同时我们还将为您解释js调用ios方法的相关知识，另外，我们还将为您提供关于.con

本文将带您了解关于从JavaScript调用后，Applet URLConnection.connect失败的新内容，同时我们还将为您解释js调用ios方法的相关知识，另外，我们还将为您提供关于.conn.ManagedClientConnectionImpl@604ed9f0 java.net.ConnectException: Connection refused: connect、:10000/hive: java.net.ConnectException: Connection refused: connect、HttpURLConnection.connect() 卡死死锁怎么解决、iphone – 为什么不需要在NSURLConnectionDelegate协议中声明的NSURLConnection委托方法的实用信息。

本文目录一览：

从JavaScript调用后，Applet URLConnection.connect失败（js调用ios方法）
.conn.ManagedClientConnectionImpl@604ed9f0 java.net.ConnectException: Connection refused: connect
:10000/hive: java.net.ConnectException: Connection refused: connect
HttpURLConnection.connect() 卡死死锁怎么解决
iphone – 为什么不需要在NSURLConnectionDelegate协议中声明的NSURLConnection委托方法

从JavaScript调用后，Applet URLConnection.connect失败（js调用ios方法）

我有一个带有Java Applet的网站，该Applet需要连接到我的服务器。这在JApplets @Override
init（）中有效，但不适用于javascript调用的我自己的函数中。

final URL url = new URL(SERVER_URL + action);System.out.println("url:" + url);System.out.println("postString: " + postString);final HttpURLConnection connection = (HttpURLConnection) url.openConnection();if(!postString.isEmpty()) {    connection.setRequestMethod("POST");    connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");    connection.setRequestProperty("Content-Length", Integer.toString(postString.getBytes().length));    connection.setUseCaches(false);    connection.setDoInput(true);    connection.setDoOutput(true);    System.out.println("connecting...");    connection.connect(); // same with connection.getOutputStream();    System.out.println("connected");    ....

网站：

<a href="javascript: document.applet.update();" title="update from server">Update</a><applet id="applet" archive="/public/Antucation-0.1.0.jar?random=3765332307555812156" code="de.antucation.controller.Controller.class" width="100%" height="800px"><param name="colonyId" value="1"></applet>

输出：

url:http://localhost:9000/applet/showCodepostString: colonyId=1connecting...

我尝试通过System.out调用解决它，但是那里也没有任何反应。但是，这绝对可以：

@Overridepublic void init() {    update();}

哦，小程序当然也来自 http://localhost:9000/

我该如何解决或解决它？

答案1

小编典典

尝试以下方法：

public void callFromJavaScript(final String param) {    AccessController.doPrivileged( new PrivilegedAction<Void>() {        public Void run() {            // call code to make the connection..            return null;        }    });}

.conn.ManagedClientConnectionImpl@604ed9f0 java.net.ConnectException: Connection refused: connect

DEBUG 2016-11-07 14:32:47,518 Get connection for route {}->http://127.0.0.1:8087->http://rdsearch.zhaopin.com:80
DEBUG 2016-11-07 14:32:47,519 Connecting to 127.0.0.1:8087
DEBUG 2016-11-07 14:32:48,530 Connection org.apache.http.impl.conn.DefaultClientConnection@91161c7 closed
DEBUG 2016-11-07 14:32:48,531 Connection org.apache.http.impl.conn.DefaultClientConnection@91161c7 shut down
DEBUG 2016-11-07 14:32:48,532 Releasing connection org.apache.http.impl.conn.ManagedClientConnectionImpl@604ed9f0
java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:117)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:304)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:882)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:107)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)

:10000/hive: java.net.ConnectException: Connection refused: connect

java.sql.SQLException: Could not establish connection to 192.168.2.100:10000/hive: java.net.ConnectException: Connection refused: connect
at org.apache.hadoop.hive.jdbc.HiveConnection.<init>(HiveConnection.java:116)
at org.apache.hadoop.hive.jdbc.HiveDriver.connect(HiveDriver.java:104)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at cn.itcas.hive.udf.HiveJdbcClient2.main(HiveJdbcClient2.java:23)
15/09/15 10:52:18 ERROR udf.HiveJdbcClient: Connection error!

HttpURLConnection.connect() 卡死死锁怎么解决

我的程序有时候会卡死关闭的时候还必须用任务管理器才能结束进程

经调试发现问题在

Log.println("connecting");
conn.connect();
Log.println("connected");

打印了connecting就一直不动了，卡在 conn.connect() 设置了超时时间不管用

不知道知道是什么原因引起的呢

还望各位不吝赐教，谢谢

URL serverUrl = new URL(url);
			HttpURLConnection conn = (HttpURLConnection) serverUrl.openConnection();
			conn.setConnectTimeout(20000);
			conn.setRequestMethod(method);// "POST" ,"GET"
			conn.addRequestProperty("Accept",	"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
			conn.addRequestProperty("User-Agent","Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.110 Safari/537.36 CoolNovo/2.0.9.16");
			if (method.equalsIgnoreCase(Method.GET.name())) {
				Log.println("connecting");
				conn.connect();
				Log.println("connected");
			} else if (method.equalsIgnoreCase(Method.POST.name())) {
				conn.setDoOutput(true);
				conn.connect();
				conn.getOutputStream().write(contents.getBytes());
			}

iphone – 为什么不需要在NSURLConnectionDelegate协议中声明的NSURLConnection委托方法

我正在浏览apple.developer.com网站上的NSURLConnectionDelegate类引用.在那里,我意识到一些函数,比如connectionDidFinishLoading在 IOS类中不存在,但在MAC库中存在.

然后当我尝试在XCODE中为IOS应用程序使用这些功能时,自动完成将无法完成它,但功能确实按预期工作.

任何人都可以解释这些是如何工作的,并且在部署应用程序时会导致任何问题.
谢谢！！

解决方法

请记住,如果您发现API不一致,则需要向 RADAR提交错误报告,因为Black Pixel的友好人员解释说： RADAR or GTFO

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