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default constructor not found 异常解决方法

2021-11-30 2182
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简介： default constructor not found 异常解决方法 
Exception in thread "Thread-13" com.alibaba.fastjson.JSONException: default constructor not found. class com.nowcoder.async.EventModel
  at com.alibaba.fastjson.util.JavaBeanInfo.build(JavaBeanInfo.java:212)
  at com.alibaba.fastjson.parser.ParserConfig.createJavaBeanDeserializer(ParserConfig.java:504)
  at com.alibaba.fastjson.parser.ParserConfig.getDeserializer(ParserConfig.java:451)
  at com.alibaba.fastjson.parser.ParserConfig.getDeserializer(ParserConfig.java:306)
  at com.alibaba.fastjson.parser.DefaultJSONParser.parseObject(DefaultJSONParser.java:611)
  at com.alibaba.fastjson.JSON.parseObject(JSON.java:327)
  at com.alibaba.fastjson.JSON.parseObject(JSON.java:231)
  at com.alibaba.fastjson.JSON.parseObject(JSON.java:444)
  at com.nowcoder.async.EventConsumer.lambda$afterPropertiesSet$0(EventConsumer.java:72)
  at java.lang.Thread.run(Thread.java:745)

在指定类添加默认构造函数即可

这是因为spring底层都是通过反射机制,必须有默认构造器来创建对象,设置好属性

文章标签：
Java
Spring
javaedge
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