java json 解析

在接口测试的过程中，遇到响应数据是一个json的格式里面在嵌套一个jsonarray。

---

public class Common {

/*

* @author a'Echo

* @description 解析json

* eg: {"Code":10000,"Message":"成功","Result":[{"areaId":396,"areaName":"东胜区"},

* {"areaId":397,"areaName":"达拉特旗"},{"areaId":398,"areaName":"准格尔旗"},

* {"areaId":399,"areaName":"鄂托克前旗"},{"areaId":400,"areaName":"鄂托克旗"},

* {"areaId":401,"areaName":"杭锦旗"},{"areaId":402,"areaName":"乌审旗"},

* {"areaId":403,"areaName":"伊金霍洛旗"}]}

*getJsonValue:可获取Code，Message

*getJsonArrayValue:获取整个Result  json数组

*getJsonValueForJsonArray：获取Result中json的值 并指定第几个  getJsonValueForJsonArray(Result,areaId,1) 则返回的为 第二个areaId=397

*/

public static String getJsonValue(String JsonString, String JsonId) {

String JsonValue = "";

if (JsonString == null || JsonString.trim().length() < 1) {

return null;

}

try {

JSONObject obj1 = new JSONObject(JsonString);

JsonValue = (String) obj1.getString(JsonId);

} catch (JSONException e) {

e.printStackTrace();

}

return JsonValue;

}

/*

* 从响应信息 json 里面获取里面的json数组

*

*/

public static JSONArray getJsonArrayValue(String JsonString, String JsonId) {

JSONArray JsonArrayValue =null;

if (JsonString == null || JsonString.trim().length() < 1) {

return null;

}

try {

JSONObject obj2 = new JSONObject(JsonString);

JsonArrayValue = (JSONArray) obj2.getJSONArray(JsonId);

} catch (JSONException e) {

e.printStackTrace();

}

return JsonArrayValue;

}

/*

* 从json数组里面获取第几个的json

*

*/

public static String getJsonValueForJsonArray(JSONArray JsonArray, String JsonId,int index) {

String JsonValue = "";

if (JsonArray == null || JsonArray.length() < 1) {

return null;

}

try {

String JsonString=JsonArray.getString(index);

JSONObject obj3 = new JSONObject(JsonString);

JsonValue = (String) obj3.getString(JsonId);

} catch (JSONException e) {

e.printStackTrace();

}

return JsonValue;

}

}