u010536669的博客

public class TestDatagramChannel { @Test public void send()throws Exception{ DatagramChannel datagramChannel = DatagramChannel.open(); datagramChannel.configureBlocking(false); ByteBuffer buffer = ByteBuffer.allocate(1024).

public class TestPipe { @Test public void test()throws Exception{ Pipe pipe = Pipe.open(); final Pipe.SinkChannel sinkChannel = pipe.sink(); final Pipe.SourceChannel sourceChannel = pipe.source(); Thread t1 = new .

RabbitMQ

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework..

@RequestMapping(value = "/selectPatrolAddressTree", method = {RequestMethod.GET, RequestMethod.POST}) @ResponseBody public String selectPatrolAddressTree(HttpServletRequest request, HttpServletResponse response) { JSONObject json = new JSO.

@Test public void client() throws IOException { SocketChannel socketChannel = SocketChannel.open(new InetSocketAddress("127.0.0.1", 9896)); socketChannel.configureBlocking(false); ByteBuffer buffer = ByteBuffer.allocate(1024); buffer.put((n.

@Test public void client() throws IOException { SocketChannel socketChannel = SocketChannel.open(new InetSocketAddress("127.0.0.1", 9897)); FileChannel fileChannel = FileChannel.open(Paths.get("D:\\1.png"), StandardOpenOption.READ); ByteBuffer buff.

/** * 分散读取与聚集写入 * @throws Exception */ @Test public void test4() throws Exception { RandomAccessFile file = new RandomAccessFile("D:\\2.txt", "rw"); FileChannel channel1 = file.getChannel(); ByteBuffer buff1 = ByteBuffer.allocate(20); .

@RequestMapping("imgSecond") public void genImageChart(HttpServletResponse resp) { DefaultPieDataset dataset = new DefaultPieDataset(); dataset.setValue("A1", new Double(20)); dataset.setValue("B1", new Double(20)); dataset.setValue("C1", new Dou.

添加了监听org.springframework.web.context.ContextLoaderListener，导致quartz任务报错：Unable to store Job : 'FH_JOBGROUP_NAME.job1', because one already exists with this identification.原因是ContextLoaderListener 和 DispatcherServlet 对应用上下文重复加载，applicationContext.xml被实例化2

QuartzServletContextListener 代码如下（用于监听quartz，生成ServletContext）：public class QuartzServletContextListener extends QuartzInitializerListener { public static final String MY_CONTEXT_NAME = "servletContext"; @Override public void contextDestroyed(Se

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %><c:set.

添加jar包改编译版本

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"><struts> <!--设置用户界面主题，默认值为XHTML风格 --> <consta.

@RequestMapping("img") public void genImage(HttpServletResponse resp) throws Exception { try { InputStream is = new FileInputStream(new File("e:/PieChart2.png")); OutputStream os = new BufferedOutputStream(resp.getOutputStream()); byte[] bu.

package cn.bdqn.test;import java.awt.Color;import java.awt.image.BufferedImage;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;.

package cn.bdqn.websocket;import java.util.HashMap;import java.util.Map;import javax.websocket.OnClose;import javax.websocket.OnError;import javax.websocket.OnMessage;import javax.websocket.O...

package com.zwkj.test;import java.text.DateFormat;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.Timer;import java.util.TimerTask;pu...

Javascript刷新页面的几种方法：1 history.go(0)2 location.reload()3 location=location4 location.assign(location)5 document.execCommand('Refresh')6 window.navigate(location)7 location.replace(location)8 d...

like concat(#{selectword},'%')

当mybatis有多个参数时，mapper.java文件即dao层必须写上@Param注解List<AddressBean> listAddressByDate(@Param("startDate")String startDate, @Param("endDate")String endDate);然后在xml文件里用where if判断是否为空，注意if的test判断里不...

String str = "02"; String newStr = str.replaceFirst("^0*", ""); System.out.println(newStr);

List<BasicNameValuePair> list = new ArrayList<BasicNameValuePair>();list.add(new BasicNameValuePair("jsonStr", JSON.toJSONString(myMap)));String params = EntityUtils.toString(new UrlEnc...

package cn.zwkj.utils;public class MyUtils { public static void main(String[] args) { String str = "2019"; // 将字符串数字转化为汉字 toChinese(str); } private st...

@DateTimeFormat(pattern="yyyy-MM-dd")private Date DENGJISHIJIAN;

long nowtime=Long.parseLong("1571068800000"); //13位时间戳;Date date=new Date(nowtime); //10位时间戳需要*1000SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");String nowDateS...

ScheduledExecutorService scheduledThreadPool = Executors.newScheduledThreadPool(3); //延迟2秒后执行该任务scheduledThreadPool.schedule(new Runnable() { @Override public void run() { }...

1.list转JSON格式String JSONStr = JSONArray.fromObject(list).toString;response.setContentType("application/json;charset=utf-8") //传递回去必须设置格式2.字符串和JSON格式互相转换JSON.parse() //字符串转为JSONJSON.s...

首先在登陆方法里把username添加到cookie里Cookie c = new Cookie("saveName",URLEncoder.encode(username,"UTF-8"));c.setMaxAge(10000000);c.setPath(request.getContextPath+"/");response.addCookie(c);然后在登陆页面设置用户...

&lt;![CDATA[ &lt;= ]]&gt; 

//将 Date原始格式"EEE MMM dd HH:mm:ss Z yyyy"转成指定格式 String x = "Mon Mar 02 13:57:49 CST 2015";SimpleDateFormat sdf1 = new SimpleDateFormat ("EEE MMM dd HH:mm:ss Z yyyy", Locale.UK);try{ Date date=...

BigDecimal divideBigDecimal = subBigDecimal.divide(new BigDecimal(13),0,BigDecimal.ROUND_HALF_UP);第一参数表示除数， 第二个参数表示小数点后保留位数，第三个参数表示舍入模式，只有在作除法运算或四舍五入时才用到舍入模式，有下面这几种ROUND_CEILING //向正无穷方向...

CSS/* The actual popup */.popup .popuptext { display:none; width: 160px; background-color: #555; color: #fff; text-align: center; border-radius: 6px; padding: 8px 0; ...

&lt;fmt:formatNumber type="number" value="${var.TM_YONGJIN}" pattern="0.00"/&gt;toFixed(2)SELECT FORMAT(250500.5634, 2)SELECT TRUNCATE(1.23456,2)format会四舍五入，truncate不会四舍五入...

$("#loginbox").tips({ side : 1, msg : '正在登录 , 请稍后 ...', bg : '#68B500', time : 10 }); 

import org.json.JSONArray;import org.json.JSONObject;JSONObject ingredients = new JSONObject();ingredients.put("apples", "3kg");ingredients.put("sugar", "1kg");ingredients.put("pastry", "2.4kg.

<jsp:forward page="/login_toLogin" /><% response.sendRedirect("/jsp/index.jsp")%>

Class clazz = this.getClass();Method method = clazz.getMethod(mt,HttpRequest.calss,HttpRespose.class); //mt为方法名，后面为参数类型String path = method.invoke(this,request,response); //this为对象,后面为传递给方法的参数...

1.写上标签库<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%>2.在表单里格式化时间数据<fmt:formatDate value="${var.tp_add_date}" pattern="yyyy-MM-dd HH:mm:ss" />...

package cn.bdqn.demo;public class TicketThread implements Runnable{ private int num = 100; //剩余的票数 private int next=0; //售出了几张票 @Override public void run() { // TODO Auto-generated meth...