自定义注解完成字典转换

注入

  @Bean
    @Primary
    @ConditionalOnMissingBean({ObjectMapper.class})
    public ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) {
        ObjectMapper objectMapper = builder.createXmlMapper(false).build();
        // 定义 不为空，才能进行序列化
        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        // 添加 自定义 项目注解内省器
        objectMapper.setAnnotationIntrospector(new ProjectJacksonAnnotationIntrospector());
        return objectMapper;
    }

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;

import java.io.IOException;

/**
 * 功能描述: 字典序列化 <br/>
 */
public class DictSerializer extends StdSerializer<Object> {

    /** 字典类型 */
    private final String type;
    /** 分隔符 */
    private final String separator;

    public DictSerializer(String type, String separator) {
        super(Object.class);
        this.type = type;
        this.separator = separator;
    }

    @Override
    public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException {
//        gen.writeObject(this.getLabel(value.toString()));
        provider.defaultSerializeValue(value, gen);
        gen.writeStringField(gen.getOutputContext().getCurrentName().concat("Text"), "111");
    }

    /**
     * 功能描述: 核心逻辑 <br/>
     * 将码值 转换成 显示对象
     * @param code 数据内容
     * @return "com.cah.project.core.domain.out.DictData"
     */
    private String getLabel(String code) {

        return code;
    }

}

/**
 * 功能描述: 自定义项目内神器 <br/>
 */
public class ProjectJacksonAnnotationIntrospector extends JacksonAnnotationIntrospector {

    public ProjectJacksonAnnotationIntrospector() {}

    @Override
    public Object findSerializer(Annotated a) {
        // 如果是字典注解
        Dict dict = _findAnnotation(a, Dict.class);
        if(dict != null) {
            return new DictSerializer(dict.type(), dict.separator());
        }
        // 其他扩展。。。
        return super.findSerializer(a);
    }

}