fastjson 多层嵌套的问题

来源：互联网发布：东南大学翻译硕士知乎编辑：程序博客网时间：2024/05/17 23:22

今天使用fastjson的JSON.parseObject(String text,Class<?> clazz)解析3层嵌套的json串时候遇到了奇怪问题，

照着往常的代码写了javabean实体类，如下：

public class AccumulateVo implements Serializable{private static final long serialVersionUID = 2103150417537153021L;public String status;public PlayerData data = new PlayerData();public class PlayerData implements Serializable{private static final long serialVersionUID = 8918875127028668209L;public List<Player> gpplayers;public List<Player> players;}public class Player implements Serializable{private static final long serialVersionUID = -1671946651969264115L;public String sumpoint;public String pl_name;public String rank;}}

但是解析的时候报错如下：

Caused by: java.lang.IllegalArgumentException: argument 1 should have type cn.situne.wifigolfscorer.json.AccumulateVo, got cn.situne.wifigolfscorer.json.AccumulateVo$

PlayerData

转换PlayerData的第一个参数需要类型？这什么鬼？

感觉代码的没问题啊，最后经过一番查阅，有一篇文章提到了多层嵌套的时候需要使用static，但是没有具体的例子，也没说清楚给谁加static。

最后经过试验，需要给第三层的泛型类加static，再次解析，成功

代码如下：

public class AccumulateVo implements Serializable{private static final long serialVersionUID = 2103150417537153021L;public String status;public PlayerData data = new PlayerData();public class PlayerData implements Serializable{private static final long serialVersionUID = 8918875127028668209L;public List<Player> gpplayers;public List<Player> players;}public static class Player implements Serializable{private static final long serialVersionUID = -1671946651969264115L;public String sumpoint;public String pl_name;public String rank;}}

只需要给Player类添加static修饰符即可。

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