KenThomas的博客

<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <version>3.0.2</version> <configuration> <archive&gt..

说明直接new 一个 Thread 很占用cpu，所以可以使用线程池 ExecutorService aa = Executors.newCachedThreadPool(); aa.execute(()->{ try { Thread.sleep(200); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out

import java.io.FileOutputStream;import java.util.UUID;import com.itextpdf.text.Document;import com.itextpdf.text.Font;import com.itextpdf.text.PageSize;import com.itextpdf.text.Paragraph;import...

@WebServlet("/uploadWithParams")public class AServlet extends HttpServlet { @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOExcep...

Filter代码@WebFilter(urlPatterns = {"/*"},filterName = "MyFilter")@Componentpublic class MyFilter implements Filter { public void destroy() { } public void doFilter(ServletRequest reques...

import java.io.File;import java.util.ArrayList;import java.util.List;import javax.servlet.http.HttpServletRequest;import org.apache.tomcat.util.http.fileupload.FileItem;import org.apache.tomca...

/** * 过滤 */ public static void forListTest(){ List<Pension<String,Integer>> list = new ArrayList<>(); Pension pension = new Pension("小红", 25); ...

final public class TokenUtils { public static long EXPIRY_TIME = 1000*20;//过期时间30分钟 public static Map<String,Object> tokenMap = new HashMap<>(); /** * 用过userId添加token ...

popackage com.example.demo.po;import java.util.List;public class China { private Integer Id; private String Name; private Integer Pid; //省略set get}xml<?xml version="1.0" e...

@Aspect@Componentpublic class ControllerAspect { //request获取方法1 @Autowired private HttpServletRequest request; @Around(value = "execution(* com.example.demo.controller.HelloSpringB...

当你的项目需要永久的运行的时候，就需要使用下面的方法nohup java -jar xxx.jar > system.log 2>&1 &运行命令后，在同级目录下会出现system.log文件，这个文件就项目的日志文件。使用命令：ps -a可以查看Java程序运行的进程号，用于停止程序，不过当程序有好几个的时候，用命令：ps -ef|grep java这个命令会...