spring cloud全套学习代码

package com.cloud.util; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; import java.util.ArrayList; 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 org.apache.commons.beanutils.BeanUtils; public class JsonUrlUtil { private String url = "http://mall.51tys.com/Register/TysUser?p="; public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String loadJson () { StringBuilder json = new StringBuilder(); try { URL urlObject = new URL(url); URLConnection uc = urlObject.openConnection(); InputStreamReader istreamReader = new InputStreamReader(uc.getInputStream(), "utf-8"); BufferedReader in = new BufferedReader(istreamReader); String inputLine = null; while ( (inputLine = in.readLine()) != null) { json.append(inputLine); } in.close(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return json.toString(); } public String getValue(String key) { String jsonstr = loadJson(); JSONObject jb = JSONObject.fromObject(jsonstr); return jb.getString(key); } /** * * @author wangwei JSON工具类 * @param * */ /*** * 将List对象序列化为JSON文本 */ public static <T> String toJSONString(List<T> list) { JSONArray jsonArray = JSONArray.fromObject(list); return jsonArray.toString(); } /*** * 将对象序列化为JSON文本 * @param object * @return */ public static String toJSONString(Object object) { JSONArray jsonArray = JSONArray.fromObject(object); return jsonArray.toString(); } /*** * 将JSON对象数组序列化为JSON文本 * @param jsonArray * @return */ public static String toJSONString(JSONArray jsonArray) { return jsonArray.toString(); } /*** * 将JSON对象序列化为JSON文本 * @param jsonObject * @return */ public static String toJSONString(JSONObject jsonObject) { return jsonObject.toString(); } /*** * 将对象转换为List对象 * @param object * @return */ public static List toArrayList(Object object) { List arrayList = new ArrayList(); JSONArray jsonArray = JSONArray.fromObject(object); Iterator it = jsonArray.iterator(); while (it.hasNext()) { JSONObject jsonObject = (JSONObject) it.next(); Iterator keys = jsonObject.keys(); while (keys.hasNext()) { Object key = keys.next(); Object value = jsonObject.get(key); arrayList.add(value); } } return arrayList; } /*** * 将对象转换为Collection对象 * @param object * @return */ // public static Collection toCollection(Object object) // { // JSONArray jsonArray = JSONArray.fromObject(object); // // return JSONArray.toCollection(jsonArray); // } /*** * 将对象转换为JSON对象数组 * @param object * @return */ public static JSONArray toJSONArray(Object object) { return JSONArray.fromObject(object); } /*** * 将对象转换为JSON对象 * @param object * @return */ public static JSONObject toJSONObject(Object object) { return JSONObject.fromObject(object); } /*** * 将对象转换为HashMap * @param object * @return */ public static HashMap toHashMap(Object object) { HashMap<String, Object> data = new HashMap<String, Object>(); JSONObject jsonObject = JsonUrlUtil.toJSONObject(object); Iterator it = jsonObject.keys(); while (it.hasNext()) { String key = String.valueOf(it.next()); Object value = jsonObject.get(key); data.put(key, value); } return data; } /*** * 将对象转换为List> * @param object * @return */ // 返回非实体类型(Map)的List public static List<Map<String, Object>> toList(Object object) { List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); JSONArray jsonArray = JSONArray.fromObject(object); for (Object obj : jsonArray) { JSONObject jsonObject = (JSONObject) obj; Map<String, Object> map = new HashMap<String, Object>(); Iterator it = jsonObject.keys(); while (it.hasNext()) { String key = (String) it.next(); Object value = jsonObject.get(key); map.put((String) key, value); } list.add(map); } return list; } /*** * 将JSON对象数组转换为传入类型的List * @param * @param jsonArray * @param objectClass * @return */ public static <T> List<T> toList(JSONArray jsonArray, Class<T> objectClass) { return JSONArray.toList(jsonArray, objectClass); } /*** * 将对象转换为传入类型的List * @param * @param jsonArray * @param objectClass * @return */ public static <T> List<T> toList(Object object, Class<T> objectClass) { JSONArray jsonArray = JSONArray.fromObject(object); return JSONArray.toList(jsonArray, objectClass); } /*** * 将JSON对象转换为传入类型的对象 * @param * @param jsonObject * @param beanClass * @return */ public static <T> T toBean(JSONObject jsonObject, Class<T> beanClass) { return (T) JSONObject.toBean(jsonObject, beanClass); } /*** * 将将对象转换为传入类型的对象 * @param * @param object * @param beanClass * @return */ public static <T> T toBean(Object object, Class<T> beanClass) { JSONObject jsonObject = JSONObject.fromObject(object); return (T) JSONObject.toBean(jsonObject, beanClass); } /*** * 将JSON文本反序列化为主从关系的实体 * @param 泛型T 代表主实体类型 * @param 泛型D 代表从实体类型 * @param jsonString JSON文本 * @param mainClass 主实体类型 * @param detailName 从实体类在主实体类中的属性名称 * @param detailClass 从实体类型 * @return */ public static <T, D> T toBean(String jsonString, Class<T> mainClass, String detailName, Class<D> detailClass) { JSONObject jsonObject = JSONObject.fromObject(jsonString); JSONArray jsonArray = (JSONArray) jsonObject.get(detailName); T mainEntity = JsonUrlUtil.toBean(jsonObject, mainClass); List<D> detailList = JsonUrlUtil.toList(jsonArray, detailClass); try { BeanUtils.setProperty(mainEntity, detailName, detailList); } catch (Exception ex) { throw new RuntimeException("主从关系JSON反序列化实体失败！"); } return mainEntity; } /*** * 将JSON文本反序列化为主从关系的实体 * @param 泛型T 代表主实体类型 * @param 泛型D1 代表从实体类型 * @param 泛型D2 代表从实体类型 * @param jsonString JSON文本 * @param mainClass 主实�