package cn.stylefeng.roses.kernel.wrapper.field.simple;
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import cn.stylefeng.roses.kernel.rule.base.SimpleFieldFormatProcess;
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import cn.stylefeng.roses.kernel.rule.enums.FormatTypeEnum;
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import cn.stylefeng.roses.kernel.wrapper.field.util.CommonFormatUtil;
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import com.fasterxml.jackson.core.JsonGenerator;
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import com.fasterxml.jackson.databind.JsonSerializer;
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import com.fasterxml.jackson.databind.SerializerProvider;
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import lombok.extern.slf4j.Slf4j;
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import java.io.IOException;
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/**
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* 针对@SimpleFieldFormat注解的具体序列化过程
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*
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* @author fengshuonan
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* @date 2022/9/6 14:09
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*/
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@Slf4j
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public class SimpleFieldFormatSerializer extends JsonSerializer<Object> {
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/**
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* 序列化类型，覆盖还是wrapper模式
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*/
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private final FormatTypeEnum formatTypeEnum;
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/**
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* 具体序列化过程
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*/
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private final Class<? extends SimpleFieldFormatProcess> processClass;
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public SimpleFieldFormatSerializer(FormatTypeEnum formatTypeEnum, Class<? extends SimpleFieldFormatProcess> processClass) {
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this.formatTypeEnum = formatTypeEnum;
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this.processClass = processClass;
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}
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@Override
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public void serialize(Object originValue, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
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try {
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this.action(originValue, jsonGenerator, serializerProvider);
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} catch (Exception e) {
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log.error("执行json的字段序列化出错", e);
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// 报错后继续写入原始值，否则会响应的json不是规范的json
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jsonGenerator.writeObject(originValue);
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}
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}
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/**
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* 真正处理序列化的逻辑
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*
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* @author fengshuonan
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* @date 2022/9/7 11:11
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*/
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private void action(Object originValue, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws InstantiationException, IllegalAccessException, IOException {
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// 创建具体字段转化的实现类
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SimpleFieldFormatProcess simpleFieldFormatProcess = processClass.newInstance();
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// 判断当前字段值是否可以转化
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boolean canFormat = simpleFieldFormatProcess.canFormat(originValue);
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if (!canFormat) {
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jsonGenerator.writeObject(originValue);
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return;
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}
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// 执行转化，获取转化过的值
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Object formattedValue = simpleFieldFormatProcess.formatProcess(originValue);
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// 将转化的值，根据策略，进行写入到渲染的json中
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CommonFormatUtil.writeField(formatTypeEnum, originValue, formattedValue, jsonGenerator);
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}
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}
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