JsonTools 工具类

import net.sf.json.JSONObject;

public class JsonTools {

    public static JSONObject getJSONObject(String jData) {

        if (jData == null || jData.length() <= 0)

            return null;

        JSONObject obj = JSONObject.fromObject(jData);

        return obj;

    }

    public static <T> String getJsonString(T t) {

        JSONObject obj = JSONObject.fromObject(t);

        return obj.toString();

    }

    public static String getJsonValueByName(JSONObject object, String name) {

        if (object == null)

            return "--";

        String value = object.getString(name);

        if (null == value || "null".equalsIgnoreCase(value))

            value = "";

        return value;

    }

    public static String getJsonValueByName(String jData, String name) {

        if (jData == null || jData.length() <= 0)

            return "";

        JSONObject obj = JSONObject.fromObject(jData);

        String value = obj.getString(name);

        if (null == value || "null".equalsIgnoreCase(value))

            value = "";

        return value;

    }

    public static String getJsonValueNotNull(String jData, String name)

            throws Exception {

        if (jData == null || jData.length() <= 0)

            throw new Exception("获取请求数据[jsonData]为空");

        JSONObject obj = JSONObject.fromObject(jData);

        String value = obj.getString(name).trim();

        if (null == value || value.length() <= 0)

            throw new Exception("获取的数据对象[" + name + "]为空");

        return value;

    }

    @SuppressWarnings({ "rawtypes", "unchecked" })

    public static <T> T getJavaBean(String jData, Class clazz) {

        /*

         * JSONObject jsonObject = JSONObject.fromObject(jData); return (T)

         * JSONObject.toBean(jsonObject, clazz);

         */

        JSONObject jsonObject = JSONObject.fromObject(jData);

        return (T) JSONObject.toBean(jsonObject, clazz);

    }

}