fastjson 与jackson 工具类封装

package util.json;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONArray;import com.alibaba.fastjson.JSONObject;import com.alibaba.fastjson.TypeReference;@SuppressWarnings("all")public class FastJsonUtil {private static final Logger logger = LoggerFactory.getLogger(FastJsonUtil.class);public static final <T> List<T> getList(String jsontext, String list_str,Class<T> clazz) {JSONObject jsonobj = JSON.parseObject(jsontext);if (jsonobj == null) {return null;}Object obj = jsonobj.get(list_str);if (obj == null) {return null;}// if(obj instanceof JSONObject){}if (obj instanceof JSONArray) {JSONArray jsonarr = (JSONArray) obj;List<T> list = new ArrayList<T>();for (int i = 0; i < jsonarr.size(); i++) {list.add(jsonarr.getObject(i, clazz));}return list;}return null;}/** * @param <T> *            -> DepartmentBean * @param jsontext *            -> {"department":{"id":"1","name":"生产部"},"password":"admin", *            "username":"admin"} * @param obj_str *            -> department * @param clazz *            -> DepartmentBean * @return -> T */public static final <T> T getObject(String jsontext, String obj_str,Class<T> clazz) {JSONObject jsonobj = JSON.parseObject(jsontext);if (jsonobj == null) {return null;}Object obj = jsonobj.get(obj_str);if (obj == null) {return null;}if (obj instanceof JSONObject) {return jsonobj.getObject(obj_str, clazz);} else {logger.info(obj.getClass()+"");}return null;}/** * @param <T> * @param jsontext *            ->{"department":{"id":"1","name":"生产部"},"password":"admin", *            "username":"admin"} * @param clazz *            -> UserBean.class * @return -> UserBean */// 注：传入任意的jsontext,返回的T都不会为null,只是T的属性为nullpublic static final <T> T getObject(String jsontext, Class<T> clazz) {T t = null;try {t = JSON.parseObject(jsontext, clazz);} catch (Exception e) {logger.error("json字符串转换失败！" + jsontext, e);}return t;}public static final String toJSONString(Object object, boolean prettyFormat) {return JSON.toJSONString(object, prettyFormat);}/** * @Description： json字符串转成为List * @author: GuXiYang * @date: 2017/05/08 10:25:00 * @param jsonStr *            json字符串 * @param clazz *            class名称 * @return */public static <T> List<T> getList(String jsonStr, Class<T> clazz) {List<T> list = new ArrayList<T>();try {list = JSON.parseArray(jsonStr, clazz);} catch (Exception e) {logger.error("json字符串转List失败！" + jsonStr, e);}return list;}/** *  * @Description： json字符串转换成list<Map> * @author: GuXiYang * @date: 2017/05/08 10:27:16 * @param jsonString *            json字符串 * @return */public static List<Map<String, Object>> listKeyMaps(String jsonString) {List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();try {list = JSON.parseObject(jsonString,new TypeReference<List<Map<String, Object>>>() {});} catch (Exception e) {logger.error("json字符串转map失败", e);}return list;}/** * @Description： json字符串转换为Map * @author: GuXiYang * @date: 2017/05/08 10:32:33 * @param jsonStr *            json字符串 * @return */public static Map<String, Object> json2Map(String jsonStr) {try {return JSON.parseObject(jsonStr, Map.class);} catch (Exception e) {logger.error("json字符串转换失败！" + jsonStr, e);}return null;}//public static void main(String[] args) {//Map<String,Object> dataMap = new HashMap<String,Object>();//dataMap.put("tag", "data");//dataMap.put("hospitalName", "宜都市妇幼保健院");//dataMap.put("name", "欧阳夏凡");//dataMap.put("gender", "女");//dataMap.put("age", "28");//dataMap.put("code", "420502042");//dataMap.put("examineDoc", "杨林");//dataMap.put("examineDate", "2016-05-10");//dataMap.put("verifyDoc", "王菲");//String jsonString=JSON.toJSONString(dataMap);//System.out.println(jsonString);//       Map object = getObject(jsonString,Map.class);//       System.out.println(object.get("age"));//}}

package org.ph.system.utils;import java.io.IOException;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import com.alibaba.fastjson.JSON;import com.fasterxml.jackson.core.JsonProcessingException;import com.fasterxml.jackson.core.type.TypeReference;import com.fasterxml.jackson.databind.ObjectMapper;/** * Created by phshy on 2017/1/19. */public class JSONUtils {      private static final ObjectMapper mapper = new ObjectMapper();    private JSONUtils() {    }    public static Map<String, Object> json2Map(String json) throws IOException {        Map map = (Map) mapper.readValue(json, Map.class);        return map;    }    public static String object2Json(Object object) throws IOException {        return mapper.writeValueAsString(object);    }    public static <T> T json2Object(String json, Class<T> clazz) throws IOException {        return mapper.readValue(json, clazz);    }    public static List<?> json2List(String json, TypeReference<?> typeRef) throws IOException {        List list = (List) mapper.readValue(json, typeRef);        return list;    }         public static void main(String[] args) throws IOException {List<Map<String,Object>> list=new ArrayList<Map<String,Object>>();Map<String,Object> dataMap = new HashMap<String,Object>();dataMap.put("tag", "data");dataMap.put("hospitalName", "宜都市妇幼保健院");dataMap.put("name", "欧阳夏凡");dataMap.put("gender", "女");dataMap.put("age", "28");dataMap.put("code", "420502042");dataMap.put("examineDoc", "杨林");dataMap.put("examineDate", "2016-05-10");dataMap.put("verifyDoc", "王菲");Map<String,Object> dataMap2 = new HashMap<String,Object>();dataMap2.put("no", "340812");dataMap2.put("name", "古夕旸"); //String jsonString=JSON.toJSONString(dataMap);list.add(dataMap);list.add(dataMap2);//String jsonString2=mapper.writeValueAsString(list);String jsonString2=JSON.toJSONString(list);System.out.println(jsonString2);List<Map<String,Object>> json2List = (List<Map<String, Object>>) json2List(jsonString2,new TypeReference<List<Map<String,Object>>>(){});for (Map<String,Object> s:json2List) {System.out.println(s.get("name"));}}}