/*
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* Copyright (c) 2017. Lorem ipsum dolor sit amet, consectetur adipiscing elit.
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* www.hnapay.com
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*/
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package project.web.api;
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import com.alibaba.fastjson.JSONArray;
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import com.fasterxml.jackson.core.JsonGenerationException;
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import com.fasterxml.jackson.core.JsonParseException;
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import com.fasterxml.jackson.databind.JsonMappingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import org.apache.commons.lang3.StringUtils;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.io.BufferedReader;
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/**
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* JSON操作工具类
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*
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*/
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public class JsonUtils {
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/**
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* 将JSON串转为Map
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*
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* @param json
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* @return
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* @throws JsonParseException
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* @throws JsonMappingException
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* @throws IOException
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*/
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@SuppressWarnings("unchecked")
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public static Map<String, Object> jsonToMap(String json) throws Exception {
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if (StringUtils.isBlank(json)) {
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return null;
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}
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Map<String, Object> model = new HashMap<String, Object>();
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ObjectMapper mapper = new ObjectMapper();
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System.out.println("************:"+json);
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model = mapper.readValue(json, Map.class);
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return model;
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}
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/**
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* 将对象解析为json串
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*
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* @param obj
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* @return
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* @throws JsonGenerationException
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* @throws JsonMappingException
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* @throws IOException
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*/
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public static String toJson(Object obj) throws JsonGenerationException, JsonMappingException, IOException {
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ObjectMapper mapper = new ObjectMapper();
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String json = mapper.writeValueAsString(obj);
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return json;
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}
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/**
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* JSON数组转LIST
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* @param json
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* @param clazz
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* @param <T>
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* @return
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*/
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public static <T> List<T> jsonArrayToList(String json,Class<T> clazz){
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return JSONArray.parseArray(json,clazz);
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}
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}
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