content: package com.ncst.seckill.util;
  
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.io.RandomAccessFile;
  import java.net.HttpURLConnection;
  import java.net.URL;
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  
  import com.alibaba.fastjson.JSON;
  import com.alibaba.fastjson.JSONObject;
  import com.ncst.seckill.pojo.SkUser;
  
  public class UserUtil {
  
  	private static void createUser(int count) throws Exception{
  		List<SkUser> users = new ArrayList<SkUser>(count);
  		//生成用户
  		for(int i=0;i<count;i++) {
  			SkUser user = new SkUser();
  			user.setId(13000000000L+i);
  			user.setLoginCount(1);
  			user.setNickname("user"+i);
  			user.setRegisterDate(new Date());
  			user.setLastLoginDate(new Date());
  			user.setSalt("1a2b3c");
  			user.setPassword(Md5Utils.inputPassToDbPass("123456", user.getSalt()));
  			users.add(user);
  		}
  		System.out.println("create user");
  	//插入数据库
  //		Connection conn = DBUtil.getConn();
  //		String sql = "insert into seckill_user(login_count, nickname,register_date,last_login_date,  salt, password, id)values(?,?,?,?,?,?,?)";
  //		PreparedStatement pstmt = conn.prepareStatement(sql);
  //		for(int i=0;i<users.size();i++) {
  //			SeckillUser user = users.get(i);
  //			pstmt.setInt(1, user.getLoginCount());
  //			pstmt.setString(2, user.getNickname());
  //			pstmt.setTimestamp(3, new Timestamp(user.getRegisterDate().getTime()));
  //			pstmt.setTimestamp(4, new Timestamp(user.getLastLoginDate().getTime()));
  //			pstmt.setString(5, user.getSalt());
  //			pstmt.setString(6, user.getPassword());
  //			pstmt.setLong(7, user.getId());
  //			pstmt.addBatch();
  //		}
  //		pstmt.executeBatch();
  //		pstmt.close();
  //		conn.close();
  //		System.out.println("insert to db");
  		//登录，生成token
  		String urlString = "http://localhost:8080/login/do_login";
  		File file = new File("D:/JMeter/apache-jmeter-5.3/seckillJmx/token.txt");
  		if(file.exists()) {
  			file.delete();
  		}
  		RandomAccessFile raf = new RandomAccessFile(file, "rw");
  		file.createNewFile();
  		raf.seek(0);
  		for(int i=0;i<users.size();i++) {
  			SkUser user = users.get(i);
  			URL url = new URL(urlString);
  			HttpURLConnection co = (HttpURLConnection)url.openConnection();
  			co.setRequestMethod("POST");
  			co.setDoOutput(true);
  			OutputStream out = co.getOutputStream();
  			String params = "mobile="+user.getId()+"&password="+Md5Utils.inputPassToFormPass("123456");
  			out.write(params.getBytes());
  			out.flush();
  			InputStream inputStream = co.getInputStream();
  			ByteArrayOutputStream bout = new ByteArrayOutputStream();
  			byte buff[] = new byte[1024];
  			int len = 0;
  			while((len = inputStream.read(buff)) >= 0) {
  				bout.write(buff, 0 ,len);
  			}
  			inputStream.close();
  			bout.close();
  			String response = new String(bout.toByteArray());
  			JSONObject jo = JSON.parseObject(response);
  			String token = jo.getString("data");
  			System.out.println("create token : " + user.getId());
  
  			String row = user.getId()+","+token;
  			raf.seek(raf.length());
  			raf.write(row.getBytes());
  			raf.write("\r\n".getBytes());
  			System.out.println("write to file : " + user.getId());
  		}
  		raf.close();
  
  		System.out.println("over");
  	}
  
          public static void main(String[] args)throws Exception {
  		createUser(5000);
  	}
  }
  