Flask接口签名sign原理与实例代码浅析
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2022-12-05
springboot中通过lua脚本来获取序列号的方法
springboot中通过lua脚本来获取序列号的方法
序言：
事件：此web项目的功能及其简单，就是有客户端来访问redis序列号服务时发送jison报文，项目已经在测试环境成功运行2周了，具体的代码我就直接上了，此博客仅是自己的记录，同学们可做参考！
一、工程目录结构
二、配置文件
1、pom.xml
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
2、applicaiton.properties
spring.redis.database= 0
spring.redis.host= 127.0.0.1
spring.redis.port= 6379
spring.redis.pool.max-active= 8
spring.redis.pool.max-wait= -1ms
spring.redis.pool.max-idle= 8
spring.redis.pool.min-idle= 0
spring.redis.pool.timeout= 2000ms
server.port= 8085
3、luaScripts脚本
local function get_next_seq()
--KEYS[1]:第一个参数代表存储序列号的key 相当于代码中的业务类型
local key = tostring(KEYS[1])
--KEYS[2]:第二个参数代表序列号增长速度
local incr_amoutt = tonumber(KEYS[2])
--KEYS[3]`:第四个参数为序列号 (yyMMddHHmmssSSS + 两位随机数)
local seq = tonumber(KEYS[3])
--序列号过期时间大小,单位是秒
-- local month_in_seconds = 24 * 60 * 60 * 7
--Redis的 SETNX 命令可以实现分布式锁,用于解决高并发
--如果key不存在,将 key 的值设为 seq，设置成成功返回1 未设置返回0
--若给定的 key 已经存在，则 SETNX 不做任何动作，获取下一个按照步增的值
if (1 == redis.call('setnx', key, seq)) --不存在key，
then
--设置key的生存时间 为 month_in_seconds秒
-- 由于序列号需要永久有效，不能过期，所以取消这个设置，需要的可以取消注释
-- redis.call('expire', key, month_in_seconds)
--将序列返回给调用者
return seq
else
--key值存在,直接获取下一个增加的值
local nextSeq = redis.call('incrby', key, incr_amoutt)
return nextSeq
end
end
return get_next_seq()
4、log4j2.xml
filePattern="${baseDir}/$${date:yyyy-MM}/all-%d{yyyy-MM-dd}-%i.log">
filePattern="${baseDir}/$${date:yyyy-MM}/all-%d{yyyy-MM-dd}-%i.log">
filePattern="${baseDir}/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log">
filePattern="${baseDir}/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log">
filePattern="${baseDir}/$${date:yyyy-MM}/error-%d{yyyy-MM-dd}-%i.log">
filePattern="${baseDir}/$${date:yyyy-MM}/error-%d{yyyy-MM-dd}-%i.log">
三、代码部分
1、启动类
package com.test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SeqGenApplication {
private static final Logger log = LoggerFactory.getLogger(SeqGenApplication.class);
public static void main(String[] args) {
SpringApplication.run(SeqGenApplication.class, args);
log.info("start SeqGenApplication sucessfully........");
}
}
2、Bean
package com.test.bean;
import com.alibaba.fastjson.annotation.JSONField;
/**
* Copyright (C), 2019-2020
*
* 此类是请求和响应中对应的属性
*
* @author fanhf
* @date 2020-03-25
* @version v1.0.0
*/
public class RspBean {
public RspBean(){}
/* 开始序列号 */
@JSONField(name = "SNNumB")
private Integer sNNumB;
/* 从redis中获取的序列号 */
@JSONField(name = "SNNumE")
private Integer sNNumE;
/* 发起方操作流水 */
@JSONField(name = "OprNumb")
private String oprNumb;
/* 落地方操作时间 */
@JSONField(name = "OprTime")
private String oprTime;
/* 返回码 */
@JSONField(name = "BizOrderResult")
private String bizOrderResult;
/* 返回码描述 */
@JSONField(name = "ResultDesc")
private String resultDesc;
public Integer getSNNumB() {
return sNNumB;
}
public void setSNNumB(Integer sNNumB) {
this.sNNumB = sNNumB;
}
public Integer getSNNumE() {
return sNNumE;
}
public void setSNNumE(Integer sNNumE) {
this.sNNumE = sNNumE;
}
public String getOprNumb() {
return oprNumb;
}
public void setOprNumb(String oprNumb) {
this.oprNumb = oprNumb;
}
public String getOprTime() {
return oprTime;
}
public void setOprTime(String oprTime) {
this.oprTime = oprTime;
}
public String getBizOrderResult() {
return bizOrderResult;
}
public void setBizOrderResult(String bizOrderResult) {
this.bizOrderResult = bizOrderResult;
}
public String getResultDesc() {
return resultDesc;
}
public void setResultDesc(String resultDesc) {
this.resultDesc = resultDesc;
}
@Override
public String toString() {
return "RspBean{" +
"sNNumB=" + sNNumB +
", sNNumE=" + sNNumE +
", oprNumb='" + oprNumb + '\'' +
", oprTime='" + oprTime + '\'' +
", bizOrderResult='" + bizOrderResult + '\'' +
", resultDesc='" + resultDesc + '\'' +
'}';
}
}
3、Controller
package com.test.controller;
import com.test.bean.RspBean;
import com.test.service.RedisService;
import com.test.util.CommonUtils;
import com.alibaba.fastjson.JSONObhttp://ject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap;
import java.util.Map;
/**
* Copyright (C), 2019-2020
*
* 此类是web层的入口，用来接收json请求
*
* @author fanhf
* @date 2020-03-29
* @version v1.0.0
*/
@RestController
public class RedisControlLer {
private static final Logger log = LoggerFactory.getLogger(RedisControlLer.class);
@Autowired
private RedisTemplate
@Autowired
private RedisService redisService;
@PostMapping(path = "/app/v1/sync/bizOrder/QuerySerialNumber", consumes = "application/json", produces = "application/json")
public String rcvReq(@RequestBody String jsonparam){
String prettyJson= CommonUtils.prettyJson(jsonparam);
log.info("receive requset: ");
log.info("\r\n"+prettyJson);
JSONObject jsonObject = new JSONObject();
RspBean rw = new RspBean();
String response = null;
Map
try {
// 将报文放入map中
jsonMap = CommonUtils.putReq2Map(jsonparam);
response = redisService.createResponse(jsonMap);
prettyJson = CommonUtils.prettyJson(response);
log.info("send Response: ");
log.info("\r\n"+prettyJson);
} catch (Exception ex) {
if (null == jsonObject || 0 == jsonObject.size()) {
try {
String oprNumb = jsonMap.get("oprNumb");
rw.setOprNumb(oprNumb);
rw.setBizOrderResult("30000");
rw.setResultDesc(ex.getMessage());
JSONObject json = (JSONObject) JSONObject.toJSON(rw);
response = json.toString();
} catch (Exception e) {
e.printStackTrace();
}
return response;
}
}
return response;
}
}
4、Service
package com.test.service;
import java.util.Map;
public interface RedisService {
String createResponse(Map
}
ServiceImpl
package com.test.service;
import com.test.bean.RspBean;
import com.test.util.CommonUtils;
import com.test.util.RedisUtil;
import com.alibaba.fastjson.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;
import java.util.*;
/**
* Copyright (C), 2019-2020
*
* 此类是service处理层，根据接收到的序列名称和步长值，从redis中获取序列号，再对返回的信息进行组装
* 以及对异常情况时返回数据的处理
*
* @author fanhf
* @date 2020-04-05
* @version v1.0.0
*/
@Component
@Service
public class RedisServiceImpl implements RedisService {
private static final Logger log = LoggerFactory.getLogger(RedisServiceImpl.class);
@Override
public String createResponse(Map
String response = null;
RspBean rw = null;
JSONObject json = null;
// 之所以要遍历map是因为怕传过来的key值有小写的，怕get不到对应的值
String key = null;
String sNNameValue = null;
String increAmountValue = null;
for (Map.Entry
key = entry.getKey();
if ("SNName".equalsIgnoreCase(key)) {
sNNameValue = entry.getValue();
} else if("SNNum".equalsIgnoreCase(key)){
increAmountValue = entry.getValue();
}
}
String seq="0";
// 从redis中获取序列号（根据序列号名称和步长获取序列号）
List
Long seqFromRedis = null;
try {
seqFromRedis = RedisUtil.getBusiSeq(busilist);
} catch (Exception e) {
log.error("cannot get seq from redis cluster ,please check redis cluster"+ "_" + e.getMessage(), e);
}
log.info("seqFromRedis:{}", seqFromRedis);
String oprNumb = jsonMap.get("OprNumb");
String oprTime = CommonUtils.getCurDateTimestamp();
try {
rw =http:// new RspBean();
int sNNumB;
if(!StringUtils.isEmpty(seqFromRedis)){
sNNumB=seqFromRedis.intValue();
rw.setSNNumB(sNNumB);
rw.setSNNumE(sNNumB+Integer.parseInt(increAmountValue));
rw.setBizOrderResult("00000");
rw.setResultDesc("Success");
}else{
rw.setSNNumB(0);
rw.setSNNumE(0);
rw.setBizOrderResult("30000");
rw.setResultDesc("business handles failed....");
}
rw.setOprNumb(oprNumb);
rw.setOprTime(oprTime);
json = (JSONObject) JSONObject.toJSON(rw);
response = json.toString();
} catch (Exception e) {
log.error("boxing response of json happend error "+ "_" + e.getMessage(), e);
if (rw != null) {
rw.setBizOrderResult("30000");
rw.setResultDesc("business handles failed......");
json = (JSONObject) JSONObject.toJSON(rw);
response = json.toString();
}
log.info("send Response: [ {} ]", response );
jsonMap.put("responseToWzw", response);
return response;
}
return response;
}
}
5、Utils
5.1 CommonUtils
package com.test.util;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Date;
import java.util.Map;
/**
* 工具类
* @author fanhf
* @date 2020-04-01
* @version v1.0.0
*/
public class CommonUtils {
private static final Logger log = LoggerFactory.getLogger(CommonUtils.class);
public static Map
// 将json字符串转换为json对象
return (Map
}
/**
* @Description 获取系统当前时间
* @return 时间字符串
*/
public static String getCurDateTimestamp(){
DateTimeFormatter dateTimeFormatter=DateTimeFormatter.ofPattern("yyyyMMddHHmmss");
LocalDateTime localDateTime = LocalDateTime.now();
String now=localDateTime.format(dateTimeFormatter);
return now;
}
/**
* 美化json格式，将一行json转为为有回车换行的json
* @param reqJson
* @return 美化后的json
*/
public static String prettyJson(String reqJson){
JSONObject object = JSONObject.parseObject(reqJson);
String prettyJson = JSON.toJSONString(object, SerializerFeature.PrettyFormat, SerializerFeature.WriteMapNullValue,SerializerFeature.WriteDateUseDateFormat);
return prettyJson;
}
}
5.2 ReadConfigsPathUtil
package com.test.util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Properties;
/**
* @ Description : 用来获取linux和windows的config的绝对路径
* @ Author : fanhf
* @ CreateDate : 2020/4/11 0:33
* @ UpdateUser : fanhf
* @ UpdateDate : 2020/4/11 0:33
* @ UpdateRemark : 修改内容
* @ Version : 1.0.0
*/
public class ReadConfigsPathUtil {
private static final Logger log = LoggerFactory.getLogger(ReadConfigsPathUtil.class);
private ReadConfigsPathUtil() {}
private static Properties properties = null;
/**
* @Description 获取linux和windows系统中config的目录
* @param configPath lua脚本的相对路径
* @return linux和windows系统中config的目录的绝对路径
*/
public static String getPropertiesPath(String configPath) {
String sysPath = getRelativePath();
log.info("sysPath:{}",sysPath);
String filepath = new StringBuffer(sysPath)
.append(File.separator)
.append("config")
.append(File.separator)
.append(configPath).toString();
log.info("filepath:{}",filepath);
return filepath;
}
/**
* @Description 获取系统字符型属性
* @author add by fanhf
* @date 2020-04-08
*/
public static String getRelativePath() {
return System.getProperty("user.dir");
}
/**
* @Description 读取lua脚本的内容
* @param luaScriptPath lua脚本的绝对路径
* @return 读取到的lua脚本的内容
* @author add by fanhf
* @date 2020-04-15
*/
public static String readFileContent(String luaScriptPath) {
String filename = getPropertiesPath(luaScriptPath);
File file = new File(filename);
BufferedReader reader = null;
StringBuffer sbf = new StringBuffer();
try {
reader = new BufferedReader(new FileReader(file));
String tempStr;
while ((tempStr = reader.readLine()) != null) {
sbf.append(tempStr);
sbf.append("\r\n");
}
reader.close();
return sbf.toString();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
return sbf.toString();
}
}
5.3 RedisUtil
package com.test.util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.support.EncodedResource;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.script.DefaultRedisScript;
import org.springframework.data.redis.core.script.DefaultScriptExecutor;
import org.springframework.data.redis.core.script.RedisScript;
import org.springframework.stereotype.Component;
import org.springframework.util.FileCopyUtils;
import java.io.IOException;
import java.util.List;
/**
* @ Description : 用来加载和读取lua脚本并加载
* @ Author : fanhf
* @ CreateDate : 2020/4/01 0:32
* @ UpdateUser : fanhf
* @ UpdateDate : 2020/4/01 0:32
* @ UpdateRemark : 修改内容
* @ Version : 1.0.0
*/
@Component
public class RedisUtil {
private static final Logger log = LoggerFactory.getLogger(RedisUtil.class);
private static StringRedisTemplate redisStringTemplate;
private static RedisScript
private static DefaultScriptExecutor
private RedisUtil(StringRedisTemplate template) throws IOException {
RedisUtil.redisStringTemplate = template;
// 之所以会注释掉是由于这段代码可以直接读取resource目录下的非application.properties的文件，
// 但是这个方法在生产和测试环境不适用，因为配置文件必须暴露初打的jar包里
// ClassPathResource luaResource = new ClassPathResource("luaScript/genSeq.lua");
// EncodedResource encRes = new EncodedResource(luaResource, "UTF-8");
// String luaString = FileCopyUtils.copyToString(encRes.getReader());
String luaString = ReadConfigsPathUtil.readFileContent("luaScript/genSeq.lua");
redisScript = new DefaultRedisScript<>(luaString, Long.class);
scriptExecutor = new DefaultScriptExecutor<>(redisStringTemplate);
}
public static Long getBusiSeq(List
Long seqFromRedis = scriptExecutor.execute(redisScript, Busilist);
return seqFromRedis;
}
}
总结
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