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java 生成压测数据

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08/21
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询价接口压测，需要批量生成数据，

数据包括4个字段（车牌号，车架号，发动机号，支付号）licenseNo,vehicleFrameNo,engineNo,payFlowId

需符合LoadRunner 读取数据的格式

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Random;public class Pattern{public static void main(String [] agrs) throws IOException{File file = new File("D:\\testXml.txt");
if(!file.exists()){
try {
file.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
FileWriter writer;
try {
writer = new FileWriter(file);
for (int i = 0; i < 10000; i++) {
String payFlowId = "A"+getRandomString(14,"A");
String engineNo = "AWL"+getRandomString(3,"A")+getRandomString(1,"B")+getRandomString(5,"A");
String vehicleFrameNo = "LSV"+getRandomString(4,"A")+getRandomString(2,"B")+getRandomString(8,"A");
String licenseNo = "*";
System.out.println(licenseNo+","+vehicleFrameNo+","+engineNo+","+payFlowId);
writer.write(licenseNo+","+vehicleFrameNo+","+engineNo+","+payFlowId+"\n");// 写内容 }writer.flush();// 清空缓冲区，立即将输出流里的内容写到文件里
writer.close();// 关闭输出流，施放资源
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}public static String getRandomString(int length,String flg) { //length表示生成字符串的长度
String baseall = "ABCDEFGHJKLMNPRSTUVWXY0123456789";
String base = "ABCDEFGHJKLMNPRSTUVWXY";
String intbase = "0123456789";
Random random = new Random();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < length; i++) {
int number;
if("A".equals(flg)){
number = random.nextInt(intbase.length());
sb.append(intbase.charAt(number));
}
else if("B".equals(flg)){
number = random.nextInt(base.length());
sb.append(base.charAt(number));
}else {
number = random.nextInt(baseall.length());
sb.append(baseall.charAt(number));
}
}
return sb.toString();
}
}