java.lang.NoClassDefFoundError：comfasterxmljacksoncoreJsonFactory

Java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonFactory是一个常见的Java异常，通常出现在使用Jackson库解析JSON数据时。本文将介绍NoClassDefFoundError异常的原因，以及如何解决此问题。

java
import com.fasterxml.jackson.databind.ObjectMapper;
public class JsonParserExample {
    public static void main(String[] args) {
        String json = "{\"name\":\"John\", \"age\":30, \"city\":\"New York\"}";
        ObjectMapper objectMapper = new ObjectMapper();
        try {
            // 将JSON字符串转换为Java对象
            Person person = objectMapper.readValue(json, Person.class);
            // 访问Java对象的属性
            System.out.println("Name: " + person.getName());
            System.out.println("Age: " + person.getAge());
            System.out.println("City: " + person.getCity());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
class Person {
    private String name;
    private int age;
    private String city;
    // 省略构造函数和getter/setter方法
}

xml
    com.fasterxml.jackson.core
    jackson-core
    2.13.0

groovy
dependencies {
    implementation 'com.fasterxml.jackson.core:jackson-core:2.13.0'
}