FastJson解析错误：com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze

程序员文章站 2022-03-23 12:30:12

...

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

FastJson解析错误：com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze

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
 */
@Component
 public   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() {
    }

    @Override
    public 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 1.2.58
	at 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：

FastJson解析错误：com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze

{
	
    "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

FastJson解析错误：com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze

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/

FastJson解析错误：com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze

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);

FastJson解析错误：com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze

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redis
        String 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);

FastJson解析错误：com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze

1.错误代码

2.redis 数据

3.实体类

4.错误日志

5.测试：

FastJson对实体类和Json还有JSONObject相互转换

解析错误富文本json字符串(带双引号)的快速解决方法

HTTP状态代码及其定义解析 Ajax捕捉回调错误参考

Android apk安装时出现“解析软件包错误”

JavaScript语句错误throw、try及catch实例解析

Zend 输出产生XML解析错误

网站域名出现解析错误时的决绝方法与措施

网站出现域名解析错误怎么办？利用dnspod解决域名解析出错的方法

宽带错误代码解析及简单处理办法宽度网络连不上网页打不开的解决办法

bootstrap搜索建议插件suggest+使用FastJSON进行JSON和String转换解析

网站域名解析错误导致网站降权怎么办

FastJson解析错误：com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze

1.错误代码

2.redis 数据

3.实体类

4.错误日志

5.测试：

FastJson对实体类和Json还有JSONObject相互转换

解析错误富文本json字符串(带双引号)的快速解决方法

HTTP状态代码及其定义解析 Ajax捕捉回调错误参考

Android apk安装时出现“解析软件包错误”

JavaScript语句错误throw、try及catch实例解析

Zend 输出产生XML解析错误

网站域名出现解析错误时的决绝方法与措施

网站出现域名解析错误怎么办？利用dnspod解决域名解析出错的方法

宽带错误代码解析及简单处理办法 宽度网络连不上网页打不开的解决办法

bootstrap搜索建议插件suggest+使用FastJSON进行JSON和String转换解析

网站域名解析错误导致网站降权怎么办

宽带错误代码解析及简单处理办法宽度网络连不上网页打不开的解决办法