<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[lingyun246的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/lingyun246</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; lingyun246]]></copyright><item><title><![CDATA[【IEDA 启动报错: java：找不到符号 符号：变量：log】]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/133648495</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/133648495</guid><author>lingyun246</author><pubDate>Sat, 07 Oct 2023 17:37:40 +0800</pubDate><description><![CDATA[java：找不到符号 符号：变量：log]]></description><category></category></item><item><title><![CDATA[Json文件数据变更对比 java]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/127249449</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/127249449</guid><author>lingyun246</author><pubDate>Mon, 10 Oct 2022 17:56:42 +0800</pubDate><description><![CDATA[Json文件数据变更对比 java]]></description><category></category></item><item><title><![CDATA[java获取当前日期所在周的周六、周日日期]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/127249200</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/127249200</guid><author>lingyun246</author><pubDate>Mon, 10 Oct 2022 17:41:23 +0800</pubDate><description><![CDATA[java获取当前日期所在周的周六、周日日期]]></description><category></category></item><item><title><![CDATA[Java获取当日0点日期]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/127249177</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/127249177</guid><author>lingyun246</author><pubDate>Mon, 10 Oct 2022 17:39:30 +0800</pubDate><description><![CDATA[Java获取当日0点日期]]></description><category></category></item><item><title><![CDATA[java获取当前时间到凌晨还剩多少秒]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/127249128</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/127249128</guid><author>lingyun246</author><pubDate>Mon, 10 Oct 2022 17:38:35 +0800</pubDate><description><![CDATA[获取当前时间到凌晨还剩多少秒
获取当前时间
获取第二天凌晨的日期]]></description><category></category></item><item><title><![CDATA[对集合中双重循环的优化思路]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84925859</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84925859</guid><author>lingyun246</author><pubDate>Tue, 11 Sep 2018 16:13:22 +0800</pubDate><description><![CDATA[对集合中双重循环的优化思路 

一遍哈希表

事实证明，我们可以一次完成。在进行迭代并将元素插入到表中的同时，我们还会回过头来检查表中是否已经存在当前元素所对应的目标元素。如果它存在，那我们已经找到了对应解，并立即将其返回。



[code=&quot;java&quot;]
public int[] twoSum(int[] nums, int target) {
    Map map = ...]]></description><category></category></item><item><title><![CDATA[R2M 缓存]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84925856</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84925856</guid><author>lingyun246</author><pubDate>Tue, 11 Sep 2018 15:43:18 +0800</pubDate><description><![CDATA[R2M一次get对于返回的value的信息大小有什么限制么？

string不允许超过512MB,但是一般建议不超过100kb,否则节点会阻塞
测试时string超过10kb，性能出现拐点...]]></description><category></category></item><item><title><![CDATA[java 获取ip地址]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84816064</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84816064</guid><author>lingyun246</author><pubDate>Tue, 06 Sep 2016 14:59:00 +0800</pubDate><description><![CDATA[private String getIp(HttpServletRequest httpRequest) {
        String ip = httpRequest.getHeader(&quot;X-Forwarded-For&quot;);
        if (ip == null || ip.length() == 0 || &quot;unknown&quot;.equalsIgnoreCase(ip)) {
...]]></description><category></category></item><item><title><![CDATA[java 反射 根据不同方法，不同参数动态调用方法]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84814853</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84814853</guid><author>lingyun246</author><pubDate>Fri, 26 Aug 2016 17:45:40 +0800</pubDate><description><![CDATA[package com.springapp.mvc;

import java.lang.reflect.Method;

/**
 * Created by baiyunpeng on 2016/8/26.
 */
public class helloWord {

    /**
     * @param args
     */
    public static ...]]></description><category></category></item><item><title><![CDATA[maven 编译内存溢出]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84810803</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84810803</guid><author>lingyun246</author><pubDate>Thu, 21 Jul 2016 16:35:21 +0800</pubDate><description><![CDATA[修改pom.xml 文件中的此处即可

				org.apache.maven.plugins
				maven-compiler-plugin
				2.3.2
				
					${jdk.version}
					${jdk.version}
					${project.build.sourceEncoding}
                    true...]]></description><category></category></item><item><title><![CDATA[Java之美系列博文-推荐]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84804331</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84804331</guid><author>lingyun246</author><pubDate>Fri, 27 May 2016 10:20:54 +0800</pubDate><description><![CDATA[文章写的非常不错，强烈推荐

http://bbs.youkuaiyun.com/topics/390669101]]></description><category></category></item><item><title><![CDATA[Java 常用工具类集合]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84796616</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84796616</guid><author>lingyun246</author><pubDate>Fri, 06 May 2016 18:41:07 +0800</pubDate><description><![CDATA[Java 常用工具类]]></description><category></category></item><item><title><![CDATA[StringUtils 工具类的常用方法]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84796612</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84796612</guid><author>lingyun246</author><pubDate>Fri, 06 May 2016 18:19:12 +0800</pubDate><description><![CDATA[StringUtils 源码，使用的是commons-lang3-3.1包。

下载地址 http://commons.apache.org/lang/download_lang.cgi


以下是StringUtils的各项用法
1.空字符串检查
使用函数: StringUtils.isBlank(testString)
函数介绍: 当testString为空,长度为零或者仅由空...]]></description><category></category></item><item><title><![CDATA[html5 File API实现带有进度提示的文件上传]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84794704</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84794704</guid><author>lingyun246</author><pubDate>Mon, 25 Apr 2016 11:56:39 +0800</pubDate><description><![CDATA[转：
Html5终于解决了上传文件的同时显示文件上传进度的老问题。现在大部分的网站用Flash去实现这一功能，还有一些网站继续采用Html with enctype=multipart/form-data，但是需要修改服务器端可用才能显示给用户文件上传的进度。本质上你需要做的工作是在服务器端接收一个文件时，你发送给它一个字节流，所以你需要知道你已经接收到多少字节并以某种方式传达这些信息给客户端浏...]]></description><category></category></item><item><title><![CDATA[java 模拟cookie 调用httpget请求]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84794339</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84794339</guid><author>lingyun246</author><pubDate>Fri, 22 Apr 2016 15:42:07 +0800</pubDate><description><![CDATA[import org.apache.commons.io.FileUtils;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.ap...]]></description><category></category></item><item><title><![CDATA[js 日期工具类]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84775386</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84775386</guid><author>lingyun246</author><pubDate>Wed, 06 Apr 2016 17:16:41 +0800</pubDate><description><![CDATA[//计算日期之差天数
        function getDays(strDateStart,strDateEnd){
            var strSeparator = &quot;-&quot;; //日期分隔符
            var oDate1;
            var oDate2;
            var iDays;
            oDate...]]></description><category></category></item><item><title><![CDATA[java 时间工具类]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84775383</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84775383</guid><author>lingyun246</author><pubDate>Wed, 06 Apr 2016 17:13:17 +0800</pubDate><description><![CDATA[
import org.apache.commons.lang.StringUtils;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCal...]]></description><category></category></item><item><title><![CDATA[java 枚举类循环]]></title><link>https://blog.youkuaiyun.com/lingyun246/article/details/84775029</link><guid>https://blog.youkuaiyun.com/lingyun246/article/details/84775029</guid><author>lingyun246</author><pubDate>Tue, 05 Apr 2016 13:37:23 +0800</pubDate><description><![CDATA[//枚举类
public enum DeptNoEnum {
    DEPT_WEALTH_MANAGE_SOCIAL_FINANCE(1,&quot;财富管理部社交金融组&quot;),
    DEPT_PUBLIC_RELATION(2,&quot;公关部&quot;),
    DEPT_WEALTH_MANAGE_CONTENT(3,&quot;财富管理内容部&quot;);

    private Integer code;
...]]></description><category></category></item></channel></rss>