有没有人知道这三者之间的具体差异和特征,或者如果有更多功能/更灵活地用作开发人员？
artificial-intelligence wit.ai azure-language-understanding dialogflow-es
如何在休眠中使用级联和反向？定义它们的过程/标记是什么？它们是否相互关联,它们如何有用？
我需要通过java连接到远程Windows机器上的共享文件夹,在那里我将我的域身份验证(用户名和密码)放在代码中,这是我的代码
File file = new File("\\\\theRemoteIP\\webapps");
File[] files = file.listFiles();
System.out.println("acssed done");
for (int i = 0; i < files.length; i++)
{
String name = files[i].getName();
System.out.println(name);
}
谢谢
我最近建立了一个github帐户来存储我一直在研究的项目的源代码.
我正在使用egit eclipse插件将更改推送到github.
我成功地推送了初始代码和随后的2个更改.然而,当我试图推动第三次改变时,我无法做到.以下例外情况出现在eclipse错误日志中.
如果有人能告诉我这个错误的原因,或者告诉我如何调试问题,这将是一个很大的帮助.
org.eclipse.jgit.api.errors.JGitInternalException: Exception caught during execution of push command
at org.eclipse.jgit.api.PushCommand.call(PushCommand.java:156)
at org.eclipse.egit.core.op.PushOperation.run(PushOperation.java:227)
at org.eclipse.egit.ui.internal.push.PushOperationUI.execute(PushOperationUI.java:145)
at org.eclipse.egit.ui.internal.push.PushOperationUI$1.run(PushOperationUI.java:202)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: org.eclipse.jgit.errors.TransportException: ssh://git@github.com/xxx/xxx.git: session is down
at org.eclipse.jgit.transport.JschSession$JschProcess.<init>(JschSession.java:154)
at org.eclipse.jgit.transport.JschSession$JschProcess.<init>(JschSession.java:118)
at org.eclipse.jgit.transport.JschSession.exec(JschSession.java:91)
at org.eclipse.jgit.transport.TransportGitSsh$SshPushConnection.<init>(TransportGitSsh.java:306)
at org.eclipse.jgit.transport.TransportGitSsh.openPush(TransportGitSsh.java:152)
at org.eclipse.jgit.transport.PushProcess.execute(PushProcess.java:130)
at org.eclipse.jgit.transport.Transport.push(Transport.java:1120)
at org.eclipse.jgit.api.PushCommand.call(PushCommand.java:152)
... 4 more
Caused by: com.jcraft.jsch.JSchException: session is down
at com.jcraft.jsch.Session.openChannel(Session.java:750)
at org.eclipse.jgit.transport.JschSession$JschProcess.<init>(JschSession.java:147)
... 11 more
我正在使用异步Servlet来处理请求,
根据Docs :( complete(),dispatch())
????????????????????????????????????????????????????????????????????????????????
? void complete() ? Completes the asynchronous operation and closes the ?
? ? response associated with this asynchronous context. ?
? ? You call this method after writing to the response object ?
? ? inside the asynchronous context. ?
????????????????????????????????????????????????????????????????????????????????
? void dispatch() ? Dispatches the request and response objects ?
? ? of this AsyncContext to the servlet container. ?
????????????????????????????????????????????????????????????????????????????????
我无法理解async.dispatch(),async.complete()及其工作原理.
我对此几乎没有疑问:
async.dispatch() …我想要做的是在一段时间后更新我的数据库.所以我正在使用java调度程序和连接池.我不知道为什么,但我的代码只工作一次.它将打印:
init success
success
javax.naming.NameNotFoundException: Name [comp/env] is not bound in this Context. Unable to find [comp].
at org.apache.naming.NamingContext.lookup(NamingContext.java:820)
at org.apache.naming.NamingContext.lookup(NamingContext.java:168)
at org.apache.naming.SelectorContext.lookup(SelectorContext.java:158)
at javax.naming.InitialContext.lookup(InitialContext.java:411)
at test.Pool.main(Pool.java:25) ---> line 25 is Context envContext = (Context)initialContext.lookup("java:/comp/env");
我不知道为什么它只能运作一次.如果没有java调度程序我没有运行它我已经测试了它并且它工作正常.没有错误,无论如何.如果我使用调度程序运行它,不知道为什么我会收到此错误.
希望可以有人帮帮我.
我的连接池代码:
public class Pool {
public DataSource main() {
try {
InitialContext initialContext = new InitialContext();
Context envContext = (Context)initialContext.lookup("java:/comp/env");
DataSource datasource = new DataSource();
datasource = (DataSource)envContext.lookup("jdbc/test");
return datasource;
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
}
我的web.xml …
我有以下课程
Hello.java
package speak.hello;
import java.util.Map;
import speak.hi.CustomMap;
import speak.hi.Hi;
public class Hello {
private Hi hi;
Hello(Hi hi) {
this.hi = hi;
}
public String sayHello() {
return "Hello";
}
public String sayHi() {
return hi.sayHi();
}
public Map<String, Object> getMap() {
return hi.getMap();
}
public void clearMap() {
hi.getMap().clear();
}
public void discardMap() {
CustomMap map = (CustomMap) hi.getMap();
map.discard();
}
public static void main(String[] args) {
Hello hello = new Hello(new Hi());
System.out.println(hello.sayHello());
System.out.println(hello.sayHi());
System.out.println(hello.getMap());
hello.clearMap();
System.out.println("--"); …我正在尝试安装SOAPUI工具.安装完成后,执行时,我收到此错误:
无法启动JVM.最大堆大小(-XMx)可能太大,或者防病毒或防火墙工具可能会阻止执行
当安装到不同的机器时,它工作正常.
有什么建议？
我正在测试通过API的Java客户端将文件上传到CKAN/datahub.io上的数据集.
public String uploadFile()
throws CKANException {
String returned_json = this._connection.MultiPartPost("", "");
System.out.println("r: " + returned_json);
return returned_json;
}
和
protected String MultiPartPost(String path, String data)
throws CKANException {
URL url = null;
try {
url = new URL(this.m_host + ":" + this.m_port + path);
} catch (MalformedURLException mue) {
System.err.println(mue);
return null;
}
String body = "";
HttpClient httpclient = new DefaultHttpClient();
try {
String fileName = "D:\\test.jpg";
FileBody bin = new FileBody(new File(fileName),"image/jpeg");
StringBody comment = new StringBody("Filename: …我在项目中使用JAVA SE 1.7和JAVA EE 7,
哪些是可用的服务器(商业/免费),它们将支持JAVA EE 7 web profile 2.1？(必需组件).我需要使用Servlet 3.1和CDI 1.1 ..etc.
JavaEE的-spec_WebProfile
我尝试使用JBoss EAP 6.1/Jboss 7,但我开始知道它将支持JAVA EE 6 web配置文件.(web-profile1,web-profile2)
我发现JAVA EE 7兼容服务器是GlassFish Server Open Source Edition 4.0,TMAX JEUS 8.
还有其他服务器？