1.工具类：

Utils.class:

(1)简单的键值对map

[java] view plain copy

public class Utils {
public static String getRaw(Context context, int RawId) {
try {
InputStream is = context.getResources().openRawResource(RawId);
BufferedReader reader = new BufferedReader(
new InputStreamReader(is));
// StringBuffer线程安全；StringBuilder线程不安全
StringBuffer sb = new StringBuffer();
for (String str = null; (str = reader.readLine()) != null;) {
sb.append(str);
}
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
public static String getAsset(Context context, String fileName) {
try {
InputStream is = context.getResources().getAssets().open(fileName);
// StringBuffer线程安全；StringBuilder线程不安全
BufferedReader reader = new BufferedReader(
new InputStreamReader(is));
StringBuffer sb = new StringBuffer();
for (String str = null; (str = reader.readLine()) != null;) {
sb.append(str);
}
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
public static void JsonObject2HashMap(JSONObject jo, List<Map<?, ?>> rstList) {
for (Iterator<String> keys = jo.keys(); keys.hasNext();) {
try {
String key1 = keys.next();
System.out.println("key1---" + key1 + "------" + jo.get(key1)
+ (jo.get(key1) instanceof JSONObject) + jo.get(key1)
+ (jo.get(key1) instanceof JSONArray));
if (jo.get(key1) instanceof JSONObject) {
JsonObject2HashMap((JSONObject) jo.get(key1), rstList);
continue;
}
if (jo.get(key1) instanceof JSONArray) {
JsonArray2HashMap((JSONArray) jo.get(key1), rstList);
continue;
}
System.out.println("key1:" + key1 + "----------jo.get(key1):"
+ jo.get(key1));
json2HashMap(key1, jo.get(key1), rstList);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
public static void JsonArray2HashMap(JSONArray joArr,
List<Map<?, ?>> rstList) {
for (int i = 0; i < joArr.length(); i++) {
try {
if (joArr.get(i) instanceof JSONObject) {
JsonObject2HashMap((JSONObject) joArr.get(i), rstList);
continue;
}
if (joArr.get(i) instanceof JSONArray) {
JsonArray2HashMap((JSONArray) joArr.get(i), rstList);
continue;
}
System.out.println("Excepton~~~~~");
} catch (JSONException e) {
e.printStackTrace();
}
}
}
public static void json2HashMap(String key, Object value,
List<Map<?, ?>> rstList) {
HashMap<String, Object> map = new HashMap<String, Object>();
map.put(key, value);
rstList.add(map);
}
}

(2)完全Map深层嵌套模式形式：

[java] view plain copy

/**
* @param jsonData
* @param rstList
* @param params
* @func hashmap追加字段
*/
public static void JsonToHashMap(JSONObject jsonData, Map<String, Object> rstList,
String... params) {
try {
for (Iterator<String> keyStr = jsonData.keys(); keyStr.hasNext();) {
String key1 = keyStr.next().trim();
if (jsonData.get(key1) instanceof JSONObject) {
HashMap<String, Object> mapObj = new HashMap<String, Object>();
JsonToHashMap((JSONObject) jsonData.get(key1), mapObj, params);
rstList.put(key1, mapObj);
continue;
}
if (jsonData.get(key1) instanceof JSONArray) {
ArrayList<Map<String, Object>> arrayList = new ArrayList<Map<String, Object>>();
JsonToHashMap((JSONArray) jsonData.get(key1), arrayList, params);
rstList.put(key1, arrayList);
continue;
}
JsonToHashMap(key1, jsonData.get(key1), rstList);
}
// 追加字段
if (params != null && params.length == 2) {
rstList.put(params[0], params[1]);
}
if (params != null && params.length == 4) {
rstList.put(params[0], params[1]);
rstList.put(params[2], params[3]);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
public static void JsonToHashMap(JSONArray jsonarray, List<Map<String, Object>> rstList,
String... params) {
try {
for (int i = 0; i < jsonarray.length(); i++) {
if (jsonarray.get(i) instanceof JSONObject) {
HashMap<String, Object> mapObj = new HashMap<String, Object>();
JsonToHashMap((JSONObject) jsonarray.get(i), mapObj, params);
rstList.add(mapObj);
continue;
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
public static void JsonToHashMap(String key, Object value, Map<String, Object> rstList) {
key = BBSUtils.replaceBlank(key);
if (value instanceof String) {
rstList.put(key, BBSUtils.replaceBlank((String) value));
return;
}
rstList.put(key, value);
}
public static String getRaw(Context context, int RawId) {
try {
InputStream is = context.getResources().openRawResource(RawId);
BufferedReader reader = new BufferedReader(
new InputStreamReader(is));
// StringBuffer线程安全；StringBuilder线程不安全
StringBuffer sb = new StringBuffer();
for (String str = null; (str = reader.readLine()) != null;) {
sb.append(str);
}
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
public static String getAsset(Context context, String fileName) {
try {
InputStream is = context.getResources().getAssets().open(fileName);
// StringBuffer线程安全；StringBuilder线程不安全
BufferedReader reader = new BufferedReader(
new InputStreamReader(is));
StringBuffer sb = new StringBuffer();
for (String str = reader.readLine(); str != null;) {
sb.append(str);
}
return sb.toString();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}

备注：

JsonObject里面有两种情况：（1）JsonObject (2)JsonArray

JsonArray 后面有三种情况：（1）JsonObject (2)JsonArray (3)Object

====================================================

2.调用类：

[java] view plain copy

String jsonStr = Utils.getRaw(mContext, R.raw.file1);
String temp = "{\"\":[{\"aa\":\"1\",\"bb\":\"2\"},{\"aa\":\"3\",\"bb\":\"4\"},{\"aa\":\"5\",\"bb\":\"6\"}]}";
System.out.println("---------jsonStr" + jsonStr);
ArrayList<Map<?, ?>> rstList = new ArrayList<Map<?, ?>>();
try {
Utils.JsonObject2HashMap(new JSONObject(jsonStr), rstList);
Utils.JsonObject2HashMap(new JSONObject(temp), rstList);
System.out.println("---------rstList" + rstList);
} catch (JSONException e) {
e.printStackTrace();
}

3.Raw文件夹下文本文件file1：

{
"programmers": [
{
"firstName": "Brett",
"lastName": "McLaughlin"
},
{
"firstName": "Jason",
"lastName": "Hunter"
}
],
"authors": [
{
"firstName": "Isaac",
"lastName": "Asimov"
},
{
"firstName": "Tad",
"lastName": "Williams"
}
]
}

=================================================================

转载于:https://www.cnblogs.com/telwanggs/p/5430135.html

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将JsonObject转换成HashMap

1.工具类：

2.调用类：

3.Raw文件夹下文本文件file1：

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