今天做了一个Jsoup解析网站的项目,使用Jsoup.connect(url).get()连接某网站时偶尔会出现java.net.SocketTimeoutException:Read timed out异常.原因是默认的Socket的延时比较短,而有些网站的响应速度比较慢,所以会发生超时的情况. 解决方法: 链接的时候设定超时时间即可.doc = Jsoup.connect(url).timeout(5000).get();5000表示延时时间设置为5s. 测试代码如下:1,不设定timeou…

1.先说明一下代码实现:自定义package sine, 源代码保存路径为:E:\JSP\HibernateDemo\HibernateDemoProject\src\sine\ConnectSQLServer.java package sine; import java.sql.*; public class ConnectSQLServer { public static void main(String args[]){ String url="jdbc:sqlserver://local…

Exception in thread "main" java.net.UnknownHostException: file at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.Socket.connect(Socket.java:579…

import java.nio.channels.AsynchronousServerSocketChannel; import java.nio.channels.AsynchronousSocketChannel; import java.net.InetSocketAddress; import java.util.concurrent.Future; import java.nio.ByteBuffer; public class SimpleAIOServer{ static fina…

代码如下 public static void producer1() throws ExecutionException, InterruptedException { Properties props = new Properties(); props.put("bootstrap.servers", "xxx:9092,xxx:9092,xxx:9092"); props.put("zookeeper.connect", "xxx…

学习架构探险,从零开始写Java Web框架时,在学习到springAOP时遇到一个异常: "C:\Program Files\Java\jdk1.7.0_40\bin\java" -Didea.launcher.port=7533 "-Didea.launcher.bin.path=D:\JetBrains\xxIntelliJ IDEA 2016.3\bin" -Dfile.encoding=UTF-8 -classpath "C:\Program F…

在学习CGlib动态代理时,遇到如下错误: Exception in thread "main" java.lang.NoSuchMethodError: org.objectweb.asm.ClassWriter.<init>(I)V 经过百度上寻找答案,是jar包冲突导致,解决方案: 把cglib.jar包换成cglib-nodep-2.2.jar,便可以解决这个错误: cglib-nodep-2.2.jar文件下载路径:http://files.cnblogs.com…

运行时出现错误:Exception in thread "main" java.lang.NullPointerException 该问题多半是由于用到的某个对象只进行了声明,而没有初始化,即没有被new. 找到32行:heightTextField.addFocusListener(this); 前面有:JTextField heightTextField;只创建了heigthTextField对象,编写程序时没有报错,但是没有new,不能add. 错误原因:heigthTextFi…

Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes at sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:240) at sun.security.util.SignatureFileVerifier.…

Exception in thread "main" java.lang.ExceptionInInitializerErrorCaused by: java.util.MissingResourceException: Can't find bundle for base name javax.servlet.LocalStrings, locale zh_CN at java.util.ResourceBundle.throwMissingResourceException(Res…