处理json的工具类（{本类为处理json的工具类}）

<jackson.version>2.2.3</jackson.version><!-- json --><dependency> ???<groupId>net.sf.json-lib</groupId> ???<artifactId>json-lib</artifactId> ???<version>2.3</version> ???<classifier>jdk15</classifier> ???<scope>compile</scope></dependency><dependency> ???<groupId>com.alibaba</groupId> ???<artifactId>fastjson</artifactId> ???<version>1.1.41</version></dependency><!-- jackson json --><dependency> ???<groupId>com.fasterxml.jackson.core</groupId> ???<artifactId>jackson-core</artifactId> ???<version>${jackson.version}</version></dependency><dependency> ???<groupId>com.fasterxml.jackson.core</groupId> ???<artifactId>jackson-databind</artifactId> ???<version>${jackson.version}</version></dependency><dependency> ???<groupId>com.fasterxml.jackson.core</groupId> ???<artifactId>jackson-annotations</artifactId> ???<version>${jackson.version}</version></dependency><dependency> ???<groupId>com.fasterxml.jackson.module</groupId> ???<artifactId>jackson-module-jaxb-annotations</artifactId> ???<version>${jackson.version}</version></dependency>

package com.dsj.gdbd.utils.jsonUtil;import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.net.URL;import java.util.ArrayList;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import java.util.Set;import org.apache.commons.collections.map.ListOrderedMap;import org.apache.commons.lang.ObjectUtils;import org.apache.commons.lang3.StringUtils;import org.apache.log4j.Logger;import net.sf.json.JSONArray;import net.sf.json.JSONObject;/** * ?* 处理json的工具类. <br> * 本类为处理json的工具类 * ?* @author slj */public class JsonTools { ???private static Logger log = Logger.getLogger(JsonTools.class); ???/** ????* ?????* json转换list. <br> ????* 详细说明 ????* ?????* @param jsonStr ????* ???????????json字符串 ????* @return ????* @return List<Map<String,Object>> list ????* @throws @author ????* ????????????slj ????* @date 2013年12月24日 下午1:08:03 ????*/ ???public static List<Map<String, Object>> parseJSON2List(String jsonStr) { ???????JSONArray jsonArr = JSONArray.fromObject(jsonStr); ???????List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); ???????Iterator<JSONObject> it = jsonArr.iterator(); ???????while (it.hasNext()) { ???????????JSONObject json2 = it.next(); ???????????list.add(parseJSON2Map(json2.toString())); ???????} ???????return list; ???} ???/** ????* ?????* json转换map. <br> ????* 详细说明 ????* ?????* @param jsonStr ????* ???????????json字符串 ????* @return ????* @return Map<String,Object> 集合 ????* @throws @author ????* ????????????slj ????*/ ???public static Map<String, Object> parseJSON2Map(String jsonStr) { ???????ListOrderedMap map = new ListOrderedMap(); ???????// 最外层解析 ???????JSONObject json = JSONObject.fromObject(jsonStr); ???????for (Object k : json.keySet()) { ???????????Object v = json.get(k); ???????????// 如果内层还是数组的话，继续解析 ???????????if (v instanceof JSONArray) { ???????????????List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); ???????????????Iterator<JSONObject> it = ((JSONArray) v).iterator(); ???????????????while (it.hasNext()) { ???????????????????JSONObject json2 = it.next(); ???????????????????list.add(parseJSON2Map(json2.toString())); ???????????????} ???????????????map.put(k.toString(), list); ???????????} else { ???????????????map.put(k.toString(), v); ???????????} ???????} ???????return map; ???} ???/** ????* ?????* 通过HTTP获取JSON数据. <br> ????* 通过HTTP获取JSON数据返回list ????* ?????* @param url ????* ???????????链接 ????* @return ????* @return List<Map<String,Object>> list ????* @throws @author ????* ????????????slj ????*/ ???public static List<Map<String, Object>> getListByUrl(String url) { ???????try { ???????????// 通过HTTP获取JSON数据 ???????????InputStream in = new URL(url).openStream(); ???????????BufferedReader reader = new BufferedReader(new InputStreamReader(in)); ???????????StringBuilder sb = new StringBuilder(); ???????????String line; ???????????while ((line = reader.readLine()) != null) { ???????????????sb.append(line); ???????????} ???????????return parseJSON2List(sb.toString()); ???????} catch (Exception e) { ???????????log.error("Exception", e); ???????} ???????return null; ???} ???/** ????* ?????* 通过HTTP获取JSON数据. <br> ????* 通过HTTP获取JSON数据返回map ????* ?????* @param url ????* ???????????链接 ????* @return ????* @return Map<String,Object> 集合 ????* @throws @author ????* ????????????slj ????*/ ???public static Map<String, Object> getMapByUrl(String url) { ???????try { ???????????// 通过HTTP获取JSON数据 ???????????InputStream in = new URL(url).openStream(); ???????????BufferedReader reader = new BufferedReader(new InputStreamReader(in)); ???????????StringBuilder sb = new StringBuilder(); ???????????String line; ???????????while ((line = reader.readLine()) != null) { ???????????????sb.append(line); ???????????} ???????????return parseJSON2Map(sb.toString()); ???????} catch (Exception e) { ???????????log.error("Exception", e); ???????} ???????return null; ???} ???/** ????* ?????* map转换json. <br> ????* 详细说明 ????* ?????* @param map ????* ???????????集合 ????* @return ????* @return String json字符串 ????* @throws @author ????* ????????????slj ????*/ ???public static String mapToJson(Map<String, Object> map) { ???????Set<String> keys = map.keySet(); ???????String key=""; ???????StringBuffer jsonBuffer = new StringBuffer(); ???????jsonBuffer.append("{"); ???????for (Iterator<String> it = keys.iterator(); it.hasNext();) { ???????????key = (String) it.next(); ???????????String value = ObjectUtils.toString(map.get(key), ""); ???????????jsonBuffer.append(key + ":" + "\"" + value + "\""); ???????????if (it.hasNext()) { ???????????????jsonBuffer.append(","); ???????????} ???????} ???????jsonBuffer.append("}"); ???????return jsonBuffer.toString(); ???} ???????????/** ????* ?????* map转换json. <br> ????* 详细说明 ????* ?????* @param map ????* ???????????集合 ????* @return ????* @return String json字符串 ????* @throws @author ????* ????????????slj ????*/ ???public static String mapToKvJson(Map<String, Object> map) { ???????Set<String> keys = map.keySet(); ??????????JSONArray jsonArray=new ???JSONArray(); ???????????String key = ""; ???????for (Iterator<String> it = keys.iterator(); it.hasNext();) { ???????????JSONObject object = new JSONObject(); ?????????????key = (String) it.next(); ???????????String value = ObjectUtils.toString(map.get(key), ""); ?????????????object.put("key", key); ???????????????object.put("value", value); ???????????????jsonArray.add(object); ???????} ???????return jsonArray.toString(); ???} ????????????/** ????* key ????value转map ???????[{"name":"sEcho","value":1},{"name":"iColumns","value":3}]转map ????* @param jsonStr ????* @return ????*/ ???public static Map<String, Object> parsePageMap(String jsonStr){ ?????????Map<String, Object> map = new HashMap<String, Object>(); ?????????//最外层解析 ?????????if(StringUtils.isNotBlank(jsonStr)){ ???????????jsonStr=jsonStr.replace("&quot;", "\""); ???????} ???????JSONArray jsonArray = JSONArray.fromObject(jsonStr); ????????for (int i = 0; i < jsonArray.size(); i++) { ???????????JSONObject json = (JSONObject) jsonArray.get(i); ???????????map.put(json.getString("name"), json.getString("value")); ???????} ??????????????return map; ?????} ????// test ???public static void main(String[] args) { ???????Map<String, Object> map=new HashMap<String, Object>(); ???????map.put("2", "1"); ???????map.put("3", "1"); ???????System.out.println(mapToKvJson(map)); ???}}