#Java
java countDownLatch 线程辅助类
countDownLatch 线程辅助类，是一个线程计数类，用来线程同步，每当一个线程执行完成后，就是加1，当达到计数，就算执行完成。初始值必须小于等于要执行的线程数，为0 是，不…
#Java
SpringMVC 邮件发送配置及代码
首先是spring中的配置：（里面使用了FreeMarker模板引擎） <!--邮件发送实现类--> <bean&…
#Java
ftp上传下载Java实现
import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; …
#Java
java读写文件操作工具类
package util; import java.io.BufferedReader; import java.io.File; import java.io.FileInput…
#Java
java实现根据域名获得ip地址代码
mport java.net.InetAddress; import java.net.UnknownHostException; public class GetIPAddres…
#Java
java gzip压缩解压缩代码
java Gzip压缩实现代码 import java.io.FileInputStream; import java.io.FileNotFoundException; impo…
#Java
Java图片处理工具类
import java.io.*; import java.util.Date; import java.awt.*; import java.awt.image.*; impor…
#Java
java实现验证码完整版
第一步：在web.xml中配置servlet <servlet> <servlet-name>ImageServlet</servlet-name&g…
#Java
Java获取本机外网IP的代码
import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.URL; publ…
#Java
jdbc批量数据插入的代码
1899942 ,一 1899944 ,二 1899946 ,三 1899948 ,四 1899950 ,五 1899952 ,六 1899954 ,和 1899956 ,在 18…
#Java
java发送邮件 发送带附件的邮件
import java.io.File; import java.util.Date; import javax.activation.DataHandler; import ja…
#Java
poi 导出Excel 工具类
import java.io.OutputStream; import java.lang.reflect.Method; import java.text.SimpleDateF…
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