场景：项目升级后突然访问接口提示com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field

原因：前端传的json对象在转化实体类bean时，有多余的属性值，解析不了

几种解决方法：

第一种：在指定类上添加属性如下属性

@JsonIgnoreProperties(ignoreUnknown = true)

第二种：全局配置

package org.activiti.rest.conf;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * @author Joram Barrez
 */
@Configuration
public class JacksonConfiguration {

    @Bean()
    public ObjectMapper objectMapper() {
        
        ObjectMapper mapper = new ObjectMapper();
      
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); 
        return mapper;
    }
}

总结：前端传递参数时尽量按照后端要求的参数传递。