package com.zhaoonline.coupen.utils;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import java.io.IOException;
import java.io.InputStream;
import java.util.Map;

/**
 * Created by ZhaoOnline<br/>
 * User: yangyoupeng<br/>
 * Date: 2016/12/15<br/>
 * Time: 20:00<br/>
 * Description:please descript you class
 */
public class JsonUtils {
    private static ObjectMapper mapper= new ObjectMapper();


    /**
     * Method name: toObject <BR>
     * Description: 读取失败就返回null <BR>
     * Remark: <BR>
     * @param inputStram
     * @param clazz
     * @return  T<BR>
     * @throws IOException
     * @throws JsonMappingException
     * @throws JsonParseException
     */
    public static <T> T toObject(InputStream inputStram , Class<T> clazz) throws JsonParseException, JsonMappingException, IOException {
        return mapper.readValue(inputStram, clazz);
    }

    public static String toJson(Object object) throws JsonProcessingException {
        return mapper.writeValueAsString(object);
    }

    public static <T> T toObject(String jsonString,Class<T> clazz) throws IOException {
        return mapper.readValue(jsonString, clazz);
    }
    public static Map toMap(String jsonString) throws IOException {
        return toObject(jsonString,Map.class);
    }
    
}