Jackson注解 @JsonAnySetter @JsonAnyGetter

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@JsonAnySetter @JsonAnyGetter,主要用来获取反序列时未匹配上的字段,作用在set和get方法上

用法如下:

package com.xhx.json.entity3;

import com.fasterxml.jackson.annotation.JsonAnyGetter;
import com.fasterxml.jackson.annotation.JsonAnySetter;

import java.util.HashMap;
import java.util.Map;

public class Phone {
    private String id;
    private String model;
    private Map<String,Object> other = new HashMap<>();

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    @JsonAnyGetter
    public Map<String, Object> getOther() {
        return other;
    }

    /**
     * 没有匹配上的反序列化属性,放到这里
     * @param key
     * @param value
     */
    @JsonAnySetter
    public void setOther(String key, Object value) {
        this.other.put(key,value);
    }

    @Override
    public String toString() {
        return "Phone{" +
                "id='" + id + '\'' +
                ", model='" + model + '\'' +
                ", other=" + other +
                '}';
    }
}

@JsonAnySetter 的方法,用两个参数接收,一个时key,一个时value

测试方法及结果:

    @Test
    public void testJson6() throws Exception{
        Map<String,Object> map = new HashMap<>();
        map.put("id","abdae");
        map.put("name","我的");
        map.put("model","nokia");
        map.put("size","6.0");
        String s = mapper.writeValueAsString(map);
        Phone phone = mapper.readValue(s, Phone.class);
        System.out.println(phone);
        //Phone{id='abdae', model='nokia', other={size=6.0, name=我的}}
    }

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转载自blog.csdn.net/u012326462/article/details/83020222