我正在运行多个工作线程(大约10个)来访问redis Q中的数据.
因为我正在使用Jedis Client的 infinte timeout .
Jedis jedis = pool.getResource();
jedis.getClient().setTimeoutInfinite();
我仍然收到错误"无法从池中获取资源".堆栈跟踪如下所示.
redis.clients.jedis.exceptions.JedisConnectionException: Could not get a resource from the pool
at redis.clients.util.Pool.getResource(Pool.java:22)
at Workers.Worker1.met1(Worker1.java:124)
at Workers.Worker1.work(Worker1.java:108)
at org.gearman.impl.worker.WorkerConnectionController$3.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: connect timed out
at redis.clients.jedis.Connection.connect(Connection.java:124)
at redis.clients.jedis.BinaryClient.connect(BinaryClient.java:54)
at redis.clients.jedis.BinaryJedis.connect(BinaryJedis.java:1657)
at redis.clients.jedis.JedisPool$JedisFactory.makeObject(JedisPool.java:63)
at org.apache.commons.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:1188)
at redis.clients.util.Pool.getResource(Pool.java:20)
... 6 more
Caused by: java.net.SocketTimeoutException: connect timed out
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) …从数据库列中检索文件对象时,我经常收到以下错误.我该如何解决这个问题？
May 8, 2009 3:18:14 PM org.apache.catalina.core.StandardHostValve status
WARNING: Exception Processing ErrorPage[errorCode=404, location=/error.jsp]
ClientAbortException: java.net.SocketException: Connection reset by peer: socket write error
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:327)
at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:293)
at org.apache.catalina.connector.Response.flushBuffer(Response.java:537)
at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:286)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Unknown Source)
Caused by: java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(Unknown Source)
at java.net.SocketOutputStream.write(Unknown Source)
at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:746)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:433)
at org.apache.coyote.http11.InternalOutputBuffer.flush(InternalOutputBuffer.java:304)
at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:991)
at org.apache.coyote.Response.action(Response.java:182) …我有一个Android模拟器,我从eclipse运行,只是尝试连接到我在.NET(c#)中编写的简单套接字服务器.
服务器在端口4505上的同一台机器上运行.我能够telnet(通过PuTTy)到服务器,它工作正常,但当我尝试使用android模拟器连接到服务器时,我得到一个:java.net .ConnectException - localhost/127.0.0.1:4505 - 在org.apache.harmony.luni.net错误时拒绝连接.
我假设这是因为模拟器在不同的子网或什么？如果是这种情况虽然我认为我会得到一个不同的错误,将在UnknownHostException catch块中捕获...
在我编写的应用程序中,我在特定计算机上有一个java.net.SocketException:
java.net.SocketException:协议族不支持的地址族:connect
此特定计算机运行Windows 7 32位并通过本地连接(以太网)连接到Internet.该应用程序在其他计算机上正常运行,Windows 7和Windows 8,通过本地连接或Wi-Fi连接,所以我实际上不确定问题是程序化的.我试图检查本地连接的协议,但我没有看到任何问题.有人可以帮我理解是什么问题吗？为什么抛出这个异常？
这需要花费很多时间来获取数据json.当删除并再次安装它将json在1分钟内得到,当我再次点击按钮,json它需要这么多时间,仍然数据没有进入listview
这是我的异常代码
E/JSONDemo: IOExceptiojava.net.SocketTimeoutException
at java.net.PlainSocketImpl.read(PlainSocketImpl.java:493)
at java.net.PlainSocketImpl.-wrap0(PlainSocketImpl.java)
at java.net.PlainSocketImpl$PlainSocketInputStream.read(PlainSocketImpl.java:242)
at okio.Okio$2.read(Okio.java:140)
at okio.AsyncTimeout$2.read(AsyncTimeout.java:238)
at okio.RealBufferedSource.indexOf(RealBufferedSource.java:325)
at okio.RealBufferedSource.indexOf(RealBufferedSource.java:314)
at okio.RealBufferedSource.readUtf8LineStrict(RealBufferedSource.java:210)
at okhttp3.internal.http.Http1xStream.readResponse(Http1xStream.java:184)
at okhttp3.internal.http.Http1xStream.readResponseHeaders(Http1xStream.java:125)
at okhttp3.internal.http.HttpEngine.readNetworkResponse(HttpEngine.java:775)
at okhttp3.internal.http.HttpEngine.access$200(HttpEngine.java:86)
at okhttp3.internal.http.HttpEngine$NetworkInterceptorChain.proceed(HttpEngine.java:760)
at okhttp3.internal.http.HttpEngine.readResponse(HttpEngine.java:613)
at okhttp3.RealCall.getResponse(RealCall.java:244)
at okhttp3.RealCall$ApplicationInterceptorChain.proceed(RealCall.java:201)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:163)
at okhttp3.RealCall.access$100(RealCall.java:30)
at okhttp3.RealCall$AsyncCall.execute(RealCall.java:127)
at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
这是java文件中的json代码:
progress = ProgressDialog.show(MainActivity.this, "dialog title", "dialog message", true);
Toast.makeText(MainActivity.this, "ok", Toast.LENGTH_LONG).show();
if (isNetworkAvailable()) {
String url = "ConstantValue.URL";
RequestBody formBody = new …我正在使用tomcat 7和java 1.7开发debian服务器.这是一个收到多个TCP连接的应用程序,每个TCP连接都是java进程打开的文件.
看着/proc/pid of java/fd我发现,有时,打开文件的数量超过1024,当发生这种情况时,我会在catalina.out日志中找到stacktrace_SocketException: Too many open files_
我发现有关此错误的一切,人们都提到了ulimit,我已经改变了这个问题并且错误一直在发生.这是配置:
在 /etc/security/limits.conf
root soft nofile 8192
root hard nofile 8192
在 /etc/sysctl.conf
fs.file-max = 300000
该ulimit -a命令返回:
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 16382
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 8192
pipe size (512 bytes, …我正在考虑通过多个Android设备之间的Wi-Fi Direct连接进行广播的可能性.我创建了一个简单的消息广播应用程序来测试它是否有效,但到目前为止我还没有能够广播消息.当我尝试发送数据包时,我得到一个SocketException(网络无法访问):
03-20 13:23:00.148: E/UdpBroadcaster(4180): sendto failed: ENETUNREACH (Network is unreachable)
03-20 13:23:00.148: E/UdpBroadcaster(4180): java.net.SocketException: sendto failed: ENETUNREACH (Network is unreachable)
03-20 13:23:00.148: E/UdpBroadcaster(4180): at libcore.io.IoBridge.maybeThrowAfterSendto(IoBridge.java:496)
03-20 13:23:00.148: E/UdpBroadcaster(4180): at libcore.io.IoBridge.sendto(IoBridge.java:465)
03-20 13:23:00.148: E/UdpBroadcaster(4180): at java.net.PlainDatagramSocketImpl.send(PlainDatagramSocketImpl.java:182)
03-20 13:23:00.148: E/UdpBroadcaster(4180): at java.net.DatagramSocket.send(DatagramSocket.java:307)
03-20 13:23:00.148: E/UdpBroadcaster(4180): at com.example.android.wifidirect.UdpBroadcaster.sendMessage(UdpBroadcaster.java:59)
03-20 13:23:00.148: E/UdpBroadcaster(4180): at com.example.android.wifidirect.UdpBroadcaster.run(UdpBroadcaster.java:44)
03-20 13:23:00.148: E/UdpBroadcaster(4180): Caused by: libcore.io.ErrnoException: sendto failed: ENETUNREACH (Network is unreachable)
03-20 13:23:00.148: E/UdpBroadcaster(4180): at libcore.io.Posix.sendtoBytes(Native Method)
03-20 13:23:00.148: E/UdpBroadcaster(4180): at libcore.io.Posix.sendto(Posix.java:146)
03-20 13:23:00.148: E/UdpBroadcaster(4180): at …我正在尝试使用套接字实现HTTP服务器.如果客户端(例如浏览器)请求目录,则服务器显示可用文件列表.当客户端请求文件时出现问题.我收到以下错误:
java.net.SocketException: Connection reset by peer: socket write error
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113)
at java.net.SocketOutputStream.write(SocketOutputStream.java:159)
at cf.charly1811.java.web.RequestHandler.writeFile(RequestHandler.java:152)
at cf.charly1811.java.web.RequestHandler.processRequest(RequestHandler.java:139)
at cf.charly1811.java.web.RequestHandler.handleRequest(RequestHandler.java:110)
at cf.charly1811.java.web.RequestHandler.run(RequestHandler.java:86)
at java.lang.Thread.run(Thread.java:745)
堆栈跟踪显示问题来自writeFile()方法:
private void writeFile(File request) throws IOException
{
InputStream byteReader = new BufferedInputStream(new FileInputStream(request));
byte[] buffer = new byte[1024];
int bytesRead;
while ((bytesRead = byteReader.read(buffer)) != -1)
{
outputStream.write(buffer, 0, bytesRead);
}
byteReader.close();
}
但我无法弄清楚出了什么问题.你能帮助我吗？
编辑
谢谢大家的回答.在我读完你的答案之后,我明白问题是Socket发生错误时.这是我的错误代码:
// Method to process a single request
handleRequest() throw IOException
{
// process here
// …您好我使用Apache HTTP Client 4.0基于HTTPS协议上传服务器上的一些文件.上传的应用程序全天候运行.今天突然间它开始抛出这个例外 -
java.net.SocketException: No buffer space available (maximum connections reached?): connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.connect(Unknown Source)
at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:333)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:123)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:147)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:101)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:381)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:641)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:576)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:554)
谁能帮帮我吗？我对发生的事情完全无能为力？
这是上传文件的源代码 -
public File call() throws Exception {
HttpClient httpclient = new DefaultHttpClient();
try{
httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
/*
* Create POST REQUEST
*/
HttpPost httpPost = new HttpPost(this.URL);
/* …我在我的应用程序的登录页面上运行负载测试为100个用户中的100个用户正在传递休息80个用户即时获取以下异常,请帮我修复
java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:166)
at org.apache.http.impl.io.SocketInputBuffer.fillBuffer(SocketInputBuffer.java:90)
at org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:281)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:92)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:61)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:254)
at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:289)
at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:252)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.receiveResponseHeader(ManagedClientConnectionImpl.java:191)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:300)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:127)
at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:715)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:520)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.executeRequest(HTTPHC4Impl.java:505)
at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(HTTPHC4Impl.java:328)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:74)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1141)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1130)
at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:431)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:258)
at java.lang.Thread.run(Unknown Source)
socketexception ×10
java ×6
sockets ×4
android ×2
broadcast ×1
connection ×1
httpclient ×1
jedis ×1
jmeter ×1
json ×1
okhttp ×1
okhttp3 ×1
redis ×1
tomcat ×1
ulimit ×1
wifi-direct ×1