从 1.2.69 升级到 1.2.83，@JSONField 行为存在差异

[ymwangzq]

复现case如下：用 1.2.69 和 1.2.83 版本的 fastjson 会得出不同的结果

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.annotation.JSONField;

import lombok.Data;

/**
 * @author wangzhiqian
 * Created on 2022/8/19
 */
class FastJsonTest {

    @Data
    public static class SomeModel {
        private String id;
        @JSONField(name = "some_value")
        private int someValue;
    }

    /**
     * fastjson 1.2.69 即使标注了 JSONField, 仍然会用 propertyName 解析注入
     * 但是 fastjson 1.2.83 只会根据 JSONField  声明的 field 注入
     */
    @Test
    void testFastJson1() {
        String json1 = "{\"id\":\"135951990146386429\",\"someValue\":1}";
        SomeModel dto1 = JSON.parseObject(json1, SomeModel.class);
        Assertions.assertEquals(0, dto1.someValue);
    }

    @Test
    void testFastJson2() {
        String json1 = "{\"id\":\"135951990146386429\",\"some_value\":1}";
        SomeModel dto1 = JSON.parseObject(json1, SomeModel.class);
        Assertions.assertEquals(1, dto1.someValue);
    }
}

[wenshao]

https://github.com/alibaba/fastjson2/releases 升级到2.0.x版本，使用非兼容API可以解决你的问题，如下：

import com.alibaba.fastjson2.annotation.JSONField;
import com.alibaba.fastjson2.JSON;
import lombok.Data;
import org.junit.jupiter.api.Test;

import static org.junit.Assert.assertEquals;

public class Issue4266 {
    @Data
    public static class SomeModel {
        private String id;
        @JSONField(name = "some_value")
        private int someValue;
    }

    @Test
    public void test1() {
        String json1 = "{\"id\":\"135951990146386429\",\"some_value\":1}";
        SomeModel dto1 = JSON.parseObject(json1, SomeModel.class);
        assertEquals(1, dto1.someValue);
    }

    @Test
    public void test2() {
        String json1 = "{\"id\":\"135951990146386429\",\"someValue\":1}";
        SomeModel dto1 = JSON.parseObject(json1, SomeModel.class);
        assertEquals(0, dto1.someValue);
    }
}