net.arccode.wechat.pay.api.common.parser.json.JsonConverter Maven / Gradle / Ivy

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package net.arccode.wechat.pay.api.common.parser.json;


import net.arccode.wechat.pay.api.common.exception.WXPayApiException;
import net.arccode.wechat.pay.api.common.parser.Converter;
import net.arccode.wechat.pay.api.common.constant.WXPayConstants;
import net.arccode.wechat.pay.api.common.parser.Reader;
import net.arccode.wechat.pay.api.common.util.Converters;
import net.arccode.wechat.pay.api.common.util.json.ExceptionErrorListener;
import net.arccode.wechat.pay.api.common.util.json.JSONReader;
import net.arccode.wechat.pay.api.common.util.json.JSONValidatingReader;
import net.arccode.wechat.pay.api.protocol.base.WXPayResponse;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * json格式转换
 *
 * @author http://arccode.net
 * @since 2015-11-06
 */
public class JsonConverter implements Converter {


    @Override
    public  T toResponse(String resp, Class clazz) throws WXPayApiException {
        JSONReader reader = new JSONValidatingReader(new ExceptionErrorListener());
        Object rootObj = reader.read(resp);
        if (rootObj instanceof Map) {
            Map rootJson = (Map) rootObj;
            Collection values = rootJson.values();
            for (Object rspObj : values) {
                if (rspObj instanceof Map) {
                    Map rspJson = (Map) rspObj;
                    return fromJson(rspJson, clazz);
                }
            }
        }
        return null;
    }

    /**
     * 把JSON格式的数据转换为对象
     *
     * @param    泛型领域对象
     * @param json  JSON格式的数据
     * @param clazz 泛型领域类型
     * @return 领域对象
     * @throws WXPayApiException
     */
    public  T fromJson(final Map json, Class clazz) throws WXPayApiException {
        return Converters.convert(clazz, new Reader() {
            public boolean hasReturnField(Object name) {
                return json.containsKey(name);
            }

            public Object getPrimitiveObject(Object name) {
                return json.get(name);
            }

            public Object getObject(Object name, Class type) throws WXPayApiException {
                Object tmp = json.get(name);
                if (tmp instanceof Map) {
                    Map map = (Map) tmp;
                    return fromJson(map, type);
                } else {
                    return null;
                }
            }

            public List getListObjects(Object listName, Object itemName, Class subType)
                    throws WXPayApiException {
                List