java.util.ArrayList 不能被转换为 cn.hutool.json.JSONArray。 在Java 中,java.util.ArrayList 和cn.hutool.json.JSONArray 是两种完全不同的类型,分别属于 Java 标准库和 Hutool 库。尽管它们在某些功能上可能相似(例如,都可以存储一系列的元素),但它们的实现和用途是不同的。 原因分析 类型差异: java.util....
JSONArray 没有办法直接强转成ArrayList<String>报的错误!java.lang.ClassCastException: com.alibaba.fastjson.JSONArray cannot be cast to java.util.ArrayList 上面这个报错是JSONArray 没有办法直接强转成ArrayList,我看你的视频是可以的,但是我自己写的就不行,我想问到底这是怎么回事?下面是我自己多写了几行代...
如:list.add(newElement(4)); Exception in thread"main"java.lang.ClassCastException: java.util.Arrays$ArrayList cannot be cast to java.util.ArrayListat collection.ConvertArray.main(ConvertArray.java:22)。 ~~~ 结语:我只想把我所知道的,尽量简洁清楚地表达出来。
进行枚举输出的时候,报错:java.lang.ClassCastException: com.alibaba.fastjson.JSONArray cannot be cast to java.util.ArrayList 用org.codehaus.jackson.map.ObjectMapper.readValue(text, Suitables.class);解析之后是没有问题的。 版本:1.2.1,1.2.4
} 如果我使用 String[] imgs = (String[]) map.get("imgs") 去获取传过来的数组就会报错: java.lang.ClassCastException: java.util.ArrayList cannot be cast to [Ljava.lang.String; 说ArrayList不能转换成String[]; 我JSON中的内容传的是一个数组呀,为什么变成ArrayList了? java...
!!! powershell script to add a word in the beginning of the text file - URGENT !!! 'A positional parameter cannot be found that accepts argument '$null'. 'Name' Attribute cannot be modified - owned by the system 'set-acl.exe' not recognized as the name of a cmdlet, 'Set-ExecutionP...
Redis获取缓存异常:java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to XXX 2019-10-12 16:28 −Redis获取缓存异常:java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to XXX。 出现这种异常,我需要自定义ObjectMapper,设置一些参数,而不是直接使用Jackson2JsonRedisSer...
MySqlConnection cannot be cast to [B]MySQL.Data.MySqlClient.MySqlConnection. [C#] How to make the Console Process delay [C#] Oracle.DataAccess issue - Unhandled exception of type System.TypeInitializationException occured in mscorlib.dll [C#] Regex - Best Validation of Domain? [C#] Upload ...
I am getting a java.util.ArrayList cannot be cast to java.util.Map error when trying to convert to the X12 EDI adapter. I know why, just not sure how to fix this. Below is the dataweave. I have to loop through all the items and create java.util.Map, but since it is looping thro...
SQLActionException: INTERNAL_SERVER_ERROR 5000 ClassCastException: java.util.ArrayList cannot be cast to java.util.Map at io.crate.types.ObjectType.value(ObjectType.java:59) at io.crate.types.ObjectType.value(ObjectType.java:32) at io.crate.operation.reference.doc.lucene.DocCollectorExpression$1...