<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)); } }