package jsonToMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import net.sf.json.JSONArray; import net.sf.json.JSONObject; /** * 说明 json字符串 转成 Map/List * @author xss * @date 2013-1-18 10:22:41 * @mail wuniu2010@126.com */ public class JsonToMap { public static void main(String[] args) { //JSONArray String jsonArrayData="[{"a1":"12","b1":"112","c1":"132","d1":"134"},{"a2":"12","b2":"112","c2":"132","d2":"134"},{"a3":"12","b3":"112","c3":"132","d3":"134"}]"; JSONArray jsonArray = JSONArray.fromObject(jsonArrayData); List<Map<String,Object>> mapListJson = (List)jsonArray; for (int i = 0; i < mapListJson.size(); i++) { Map<String,Object> obj=mapListJson.get(i); for(Entry<String,Object> entry : obj.entrySet()){ String strkey1 = entry.getKey(); Object strval1 = entry.getValue(); System.out.println("KEY:"+strkey1+" --> Value:"+strval1+" "); } } // JSONObject String jsonObjectData="{"data1":{"a1":"12","b1":"112","c1":"132","d1":"134"},"data2":{"a2":"12","b2":"112","c2":"132","d2":"134"},"data3":{"a3":"12","b3":"112","c3":"132","d3":"134"}}"; JSONObject jsonObject = JSONObject.fromObject(jsonObjectData); Map<String, Object> mapJson = JSONObject.fromObject(jsonObject); for(Entry<String,Object> entry : mapJson.entrySet()){ Object strval1 = entry.getValue(); JSONObject jsonObjectStrval1 = JSONObject.fromObject(strval1); Map<String, Object> mapJsonObjectStrval1 = JSONObject.fromObject(jsonObjectStrval1); System.out.println("KEY:"+entry.getKey()+" --> Value:"+entry.getValue()+" "); for(Entry<String, Object> entry1:mapJsonObjectStrval1.entrySet()){ System.out.println("KEY:"+entry1.getKey()+" --> Value:"+entry1.getValue()+" "); } } } }
import java.util.Iterator; import java.util.Set; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; /** * @date 2013-2-1 10:36:22 * @author xss * @说明 org.json jar包环境下 遍历 不知道外层key的json字符串 */ public class JsonTest { public static void main(String[] args) { try { String json = "{"1293142@1098820@1211867_1083940_1293396_1148650":[{"FS_ID":"1293396","SX_MC":"李四","YFS_ID":"1293142","SZ_ID":"1148650","SX_Z":"803932"}],"1293142@1098820@1211867_1083940_1293396_1097084":[{"FS_ID":"1293396","SX_MC":"李四","YFS_ID":"1293142@1084106@1103027","SZ_ID":"1097084","SX_Z":"124"}],"1293142@1098820@1211867_1083940_1293331_1148650":[{"FS_ID":"1293331","SX_MC":"张三","YFS_ID":"1293142","SZ_ID":"1148650","SX_Z":"1005240"}],"1293142@1098820@1211867_1083940_1293331_1097084":[{"FS_ID":"1293331","SX_MC":"张三","YFS_ID":"1293142@1084106@1103027","SZ_ID":"1097084","SX_Z":"204"}],"1293142@1098820@1211867_1083940_1284806_1148650":[{"FS_ID":"1284806","SX_MC":"王小二","YFS_ID":"1293142","SZ_ID":"1148650","SX_Z":"513475"}],"1293142@1098820@1211867_1083940_1284806_1097084":[{"FS_ID":"1284806","SX_MC":"王小二","YFS_ID":"1293142@1084106@1103027","SZ_ID":"1097084","SX_Z":"145"}],"1293142@1098820@1211867_1083940_1293461_1148650":[{"FS_ID":"1293461","SX_MC":"朱重八","YFS_ID":"1293142","SZ_ID":"1148650","SX_Z":"339040"}],"1293142@1098820@1211867_1083940_1293461_1097084":[{"FS_ID":"1293461","SX_MC":"朱重八","YFS_ID":"1293142@1084106@1103027","SZ_ID":"1097084","SX_Z":"52"}]}"; JSONObject jsonObj = new JSONObject(json); //方式二 Iterator it = jsonObj.keys(); for (int j = 0; it.hasNext(); j++) { String str = it.next().toString(); System.out.println(str); JSONArray array = new JSONArray(jsonObj.get(str).toString()); System.out.println(array); for (int i = 0; i < array.length(); i++) { JSONObject jons = array.getJSONObject(i); System.out.println(jons.get("SX_MC")); } } System.out.println("tep2"); //方式1 Set<String> set = jsonObj.keySet(); for (String str : set) { System.out.println(str); JSONArray array = new JSONArray(jsonObj.get(str).toString()); System.out.println(array); for (int i = 0; i < array.length(); i++) { JSONObject jons = array.getJSONObject(i); System.out.println(jons.get("SX_MC")); } } } catch (JSONException e) { e.printStackTrace(); } } }