1.错误代码

/**** 获取商品秒杀政策* @param list* @return*/private Map<String, Object> getLimitPolicy(ArrayList<Map<String, Object>> list){Map<String, Object> resultMap = new HashMap<String, Object>();for (Map<String, Object> skuMap: list){//3.1、从redis取出政策String policy = stringRedisTemplate.opsForValue().get("LIMIT_POLICY_"+skuMap.get("sku_id").toString());//3.2、判断有政策的才继续if (policy!=null&&!policy.equals("")){//  Map<String, Object> policyInfo = JSONObject.parseObject(policy, Map.class);Limit_Policy  limit_policy=JSONObject.parseObject(policy,Limit_Policy.class);//3.3、开始时间小于等于当前时间，并且当前时间小于等于结束时间SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");String now = restTemplate.getForObject("http://leyou-time-server/getTime", String.class);try {Date end_time = simpleDateFormat.parse(limit_policy.getEnd_time().toString());Date begin_time = simpleDateFormat.parse(limit_policy.getBegin_time().toString());Date now_time = simpleDateFormat.parse(now);if (begin_time.getTime()<=now_time.getTime()&&now_time.getTime()<=end_time.getTime()){skuMap.put("limitPrice", limit_policy.getPrice());skuMap.put("limitQuanty", limit_policy.getQuanty());skuMap.put("limitBeginTime", limit_policy.getBegin_time());skuMap.put("limitEndTime", limit_policy.getEnd_time());skuMap.put("nowTime", now);}} catch (ParseException e) {e.printStackTrace();}}}resultMap.put("result", true);resultMap.put("msg", "");return resultMap;}

出错位置: Limit_Policy limit_policy=JSONObject.parseObject(policy,Limit_Policy.class);

2.redis 数据

Limit_Policy{id=0, sku_id=26816294479, quanty=7777, price=1000, begin_time=Sun Dec 29 19:00:00 CST 2019, end_time=Mon Dec 30 06:00:00 CST 2019}

3.实体类

package com.zengjx.leyou.pojo;import org.springframework.stereotype.Component;import java.io.Serializable;
import java.util.Date;/*** @ClassName HelloController* @Description TODO* @Author zengjx* @Company zengjx* @Date 2019/12/29  16:30* @Version V1.0*/
@Componentpublic   class Limit_Policy   implements Serializable {private     long   id;private    long sku_id;private    int  quanty;private     int  price;private   Date  begin_time;private   Date end_time;public long getId() {return id;}public void setId(long id) {this.id = id;}public long getSku_id() {return sku_id;}public void setSku_id(long sku_id) {this.sku_id = sku_id;}public int getQuanty() {return quanty;}public void setQuanty(int quanty) {this.quanty = quanty;}public int getPrice() {return price;}public void setPrice(int price) {this.price = price;}public Date getBegin_time() {return begin_time;}public void setBegin_time(Date begin_time) {this.begin_time = begin_time;}public Date getEnd_time() {return end_time;}public void setEnd_time(Date end_time) {this.end_time = end_time;}public Limit_Policy() {}@Overridepublic String toString() {return "Limit_Policy{" +"id=" + id +", sku_id=" + sku_id +", quanty=" + quanty +", price=" + price +", begin_time=" + begin_time +", end_time=" + end_time +'}';}
}

4.错误日志

com.alibaba.fastjson.JSONException: syntax error, expect {, actual error, pos 0, fastjson-version 1.2.58at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:489) ~[fastjson-1.2.58.jar:na]at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.parseRest(JavaBeanDeserializer.java:1537) ~[fastjson-1.2.58.jar:na]at com.alibaba.fastjson.parser.deserializer.FastjsonASMDeserializer_1_Limit_Policy.deserialze(Unknown Source) ~[na:na]at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:284) ~[fastjson-1.2.58.jar:na]at com.alibaba.fastjson.parser.DefaultJSONParser.parseObject(DefaultJSONParser.java:689) ~[fastjson-1.2.58.jar:na]at com.alibaba.fastjson.JSON.parseObject(JSON.java:378) ~[fastjson-1.2.58.jar:na]at com.alibaba.fastjson.JSON.parseObject(JSON.java:282) ~[fastjson-1.2.58.jar:na]at com.alibaba.fastjson.JSON.parseObject(JSON.java:555) ~[fastjson-1.2.58.jar:na]at com.zengjx.leyou.service.StockService.getLimitPolicy(StockService.java:170) ~[classes/:na]at com.zengjx.leyou.service.StockService.getStockListBySpu_id(StockService.java:57) ~[classes/:na]

5.测试：

{"sku_id": 26816294479,"quanty": 7777,"price": 1000,"begin_time": "2019-12-29T11:00:00.000+0000","end_time": "2019-12-29T22:00:00.000+0000"
}

    public static void main(String[] args) {String   policy="{\n" +"\t\n" +"    \"sku_id\": 26816294479,\n" +"    \"quanty\": 7777,\n" +"    \"price\": 1000,\n" +"    \"begin_time\": \"2019-12-29T11:00:00.000+0000\",\n" +"    \"end_time\": \"2019-12-29T22:00:00.000+0000\"\n" +"}";Limit_Policy parseObject = JSONObject.parseObject(policy, Limit_Policy.class);System.out.println(parseObject);}

出错的json数据：与上面不同的是以LimitPolicy开头字符串

使用json格式在线校验下面这行redis 读取的数据。

Limit_Policy {id = 0, sku_id = 26816294479, quanty = 7777, price = 1000, begin_time = Sun Dec 29 19: 00: 00 CST 2019, end_time = Mon Dec 30 06: 00: 00 CST 2019
}

校验出错：在线校验 http://www.bejson.com/

原因是实体类：重写了toString

//存入redis
stringRedisTemplate.opsForValue().set("LIMIT_POLICY_"+limit_policy.getSku_id(),limit_policy.toString(),end_diff, TimeUnit.SECONDS);

以下测试可以相互转换

FastJson对实体类和Json还有JSONObject相互转换

1. 实体类或集合转JSON串

String besnString = JSONObject.toJSONString(实体类);

2.JSON串转JSONObject

JSONObject jsonObject = JSONObject.parseObject(jsonString);

3.JSON串转实体类

实体类 javaBean = JSON.parseObject(json, 实体类.class);

4.JSON串转带泛型的List的集合

List<实体类或其他泛型> list = JSON.parseObject(json, new TypeReference<List<实体类或其他泛型>>(){});

    public static void main(String[] args) {test2();}public   static   void    test1(){String   policy="{\n" +"\t\n" +"    \"sku_id\": 26816294479,\n" +"    \"quanty\": 7777,\n" +"    \"price\": 1000,\n" +"    \"begin_time\": \"2019-12-29T11:00:00.000+0000\",\n" +"    \"end_time\": \"2019-12-29T22:00:00.000+0000\"\n" +"}";Limit_Policy parseObject = JSONObject.parseObject(policy, Limit_Policy.class);System.out.println(parseObject);}public   static   void    test2(){Limit_Policy  limit_policy  =new Limit_Policy();limit_policy.setBegin_time(new Date());limit_policy.setEnd_time(new Date());limit_policy.setId(11111);limit_policy.setPrice(11111333);String besnString = JSONObject.toJSONString(limit_policy);System.out.println(besnString);//{"begin_time":1577625875722,"end_time":1577625875722,"id":11111,"price":11111333,"quanty":0,"sku_id":0}Limit_Policy parseObject = JSONObject.parseObject(besnString, Limit_Policy.class);System.out.println("反转"+parseObject);}

6.修改

原来： stringRedisTemplate.opsForValue().set("LIMIT_POLICY_"+limit_policy.getSku_id(),limit_policy.toString(),end_diff, TimeUnit.SECONDS);
修改后
String besnString = JSONObject.toJSONString(limit_policy);
stringRedisTemplate.opsForValue().set("LIMIT_POLICY_"+limit_policy.getSku_id(),besnString,end_diff, TimeUnit.SECONDS);

//存入redisString besnString = JSONObject.toJSONString(limit_policy);//   stringRedisTemplate.opsForValue().set("LIMIT_POLICY_"+limit_policy.getSku_id(),limit_policy.toString(),end_diff, TimeUnit.SECONDS);stringRedisTemplate.opsForValue().set("LIMIT_POLICY_"+limit_policy.getSku_id(),besnString,end_diff, TimeUnit.SECONDS);

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