json to list map bean

JsonUtils.java

import com.alibaba.fastjson.JSON;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;
import net.sf.json.util.PropertyFilter;

public class JsonUtil {
    private static final ObjectMapper MAPPER = new ObjectMapper();

    public JsonUtil() {
    }

    public static <T> List<T> jsonToListByJackson(String jsonStr, Class<T> clazz) {
        JavaType type = MAPPER.getTypeFactory().constructCollectionType(List.class, clazz);
        Object list = new ArrayList();

        try {
            if (!CollectionUtil.isEmpty(jsonStr)) {
                list = (List)MAPPER.readValue(jsonStr, type);
            }

            return (List)list;
        } catch (Exception var5) {
            throw new RuntimeException("json无法解析成包含 " + clazz.getSimpleName() + " 类型的 list");
        }
    }

    public static String beanToJsonByJackson(Object bean) {
        String json = "";

        try {
            if (!CollectionUtil.isEmpty(bean)) {
                json = MAPPER.writeValueAsString(bean);
            }

            return json;
        } catch (Exception var3) {
            throw new RuntimeException("bean无法转换");
        }
    }

    public static <T> T jsonToBeanByJackson(String jsonStr, Class<T> clazz) {
        try {
            return !CollectionUtil.isEmpty(jsonStr) ? MAPPER.readValue(jsonStr, clazz) : null;
        } catch (Exception var3) {
            throw new RuntimeException("json无法解析成  " + clazz.getSimpleName() + " 类型的 bean");
        }
    }

    public static String mapToJsonArray(Map<String, Object> map) {
        JSONArray json = JSONArray.fromObject(map);
        return json.toString();
    }

    public static String mapToJsonObj(Map<String, Object> map) {
        return JSON.toJSONString(map);
    }

    public static String objectToJson(Object object) {
        StringBuilder json = new StringBuilder();
        if (object == null) {
            json.append("\"\"");
        } else if (object instanceof String) {
            json.append("\"").append((String)object).append("\"");
        } else if (object instanceof Integer) {
            json.append("\"").append(String.valueOf(object)).append("\"");
        } else if (object instanceof Date) {
            SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            json.append("\"").append(formatter.format((Date)object)).append("\"");
        } else if (object instanceof List) {
            json.append("\"").append(listToJson((List)object)).append("\"");
        } else if (object instanceof Map) {
            json.append(mapToJsonObj((Map)object));
        } else {
            json.append(beanToJson(object));
        }

        return json.toString();
    }

    public static String beanToJson(Object bean) {
        JSONObject jsonObject = JSONObject.fromObject(bean);
        return jsonObject.toString();
    }

    public static String beanToJsonNullNotConvert(Object bean) {
        JsonConfig config = new JsonConfig();
        config.setJsonPropertyFilter(new PropertyFilter() {
            public boolean apply(Object source, String name, Object value) {
                return value == null || "".equals(value);
            }
        });
        JSONObject jsonObject = JSONObject.fromObject(bean, config);
        return jsonObject.toString();
    }

    public static String listToJson(List<?> list) {
        StringBuilder json = new StringBuilder();
        json.append("[");
        if (list != null && list.size() > 0) {
            Iterator var2 = list.iterator();

            while(var2.hasNext()) {
                Object obj = var2.next();
                json.append(objectToJson(obj));
                json.append(",");
            }

            json.setCharAt(json.length() - 1, ']');
        } else {
            json.append("]");
        }

        return json.toString();
    }

    public static <T> List<T> jsonToList(String jsonStr, Class<T> clazz) {
        JSONArray array = JSONArray.fromObject(jsonStr);
        List<T> list = new ArrayList();

        for(int i = 0; i < array.size(); ++i) {
            JSONObject jsonObject = array.getJSONObject(i);
            T t = JSONObject.toBean(jsonObject, clazz);
            list.add(t);
        }

        return list;
    }

    public static <T> T jsonToBean(String jsonStr, Class<T> clazz) {
        JSONObject jsonObject = JSONObject.fromObject(jsonStr);
        return JSONObject.toBean(jsonObject, clazz);
    }

    public static <T> T jsonToBeanUseFastJson(String jsonStr, Class<T> clazz) {
        return JSON.parseObject(jsonStr, clazz);
    }

    public static HashMap<String, Object> jsonToMap(Object jsonObj) {
        HashMap<String, Object> map = new HashMap();
        if (CollectionUtil.isEmpty(jsonObj)) {
            return map;
        } else {
            JSONObject json = JSONObject.fromObject(jsonObj);
            Iterator var3 = json.keySet().iterator();

            while(true) {
                while(var3.hasNext()) {
                    Object k = var3.next();
                    Object v = json.get(k);
                    if (v instanceof JSONArray) {
                        List<Map<String, Object>> list = new ArrayList();
                        Iterator it = ((JSONArray)v).iterator();

                        while(it.hasNext()) {
                            JSONObject json2 = (JSONObject)it.next();
                            Map<String, Object> tempMap = jsonToMap(json2.toString());
                            if (!CollectionUtil.isEmpty(tempMap)) {
                                list.add(tempMap);
                            }
                        }

                        if (!CollectionUtil.isEmpty(list) && list.contains((Object)null)) {
                            List<Map<String, Object>> nullCollectionList = new ArrayList();
                            nullCollectionList.add((Object)null);
                            list.removeAll(nullCollectionList);
                        }

                        map.put(k.toString(), list);
                    } else {
                        map.put(k.toString(), v);
                    }
                }

                return map;
            }
        }
    }

    public static String removeJsonNode(String jsonStr, String key) {
        if (!CollectionUtil.isEmpty(jsonStr) && !CollectionUtil.isEmpty(key)) {
            Map<String, Object> tempMap = jsonToMap(jsonStr);
            if (tempMap.containsKey(key)) {
                tempMap.remove(key);
            }

            return objectToJson(tempMap);
        } else {
            return null;
        }
    }
}