com.zhucan.jpa.conversion.serializer.JsonEnumDeserializer Maven / Gradle / Ivy
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package com.zhucan.jpa.conversion.serializer;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.BeanProperty;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.deser.ContextualDeserializer;
import com.zhucan.jpa.conversion.CodeEnum;
import org.springframework.util.StringUtils;
import java.io.IOException;
import java.util.regex.Pattern;
/**
* @author: zhuCan
* @date: 18:05
* @description: 枚举反序列化
*/
public class JsonEnumDeserializer extends JsonDeserializer> implements ContextualDeserializer {
/**
* 枚举类的class
*/
private Class clazz;
/**
* 执行反序列化
*
* @param p
* @param context
* @return
* @throws IOException
*/
@Override
public Enum deserialize(JsonParser p, DeserializationContext context) throws IOException {
if (!StringUtils.isEmpty(p.getText()) && CodeEnum.class.isAssignableFrom(clazz) && isInteger(p.getText())) {
return (Enum) CodeEnum.valueOf(clazz, Integer.valueOf(p.getText()));
}
return null;
}
/**
* 获取 需要转的枚举的 class
*
* @param context
* @param property
* @return
*/
@Override
public JsonDeserializer createContextual(DeserializationContext context, BeanProperty property) {
Class rawCls = context.getContextualType().getRawClass();
JsonEnumDeserializer clone = new JsonEnumDeserializer();
clone.setClazz(rawCls);
return clone;
}
/**
* 判断是否为整数
*
* @param str 传入的字符串
* @return 是整数返回true, 否则返回false
*/
public static boolean isInteger(String str) {
Pattern pattern = Pattern.compile("^[-\\+]?[\\d]*$");
return pattern.matcher(str).matches();
}
public Class getClazz() {
return clazz;
}
public void setClazz(Class clazz) {
this.clazz = clazz;
}
}