这是我从文档中获得的代码，我知道，我收到了JSON格式的结果。但我只需要这个词的含义。所以任何人都可以告诉我如何只提取搜索词的含义，而不是获取整个JSON文件。我是android开发的新手，请帮帮我。
package com.example.hsekar.dictionarytestbeta;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
new CallbackTask().execute(dictionaryEntries());
}
private String dictionaryEntries() {
final String language = "en";
final String word = "Ace";
final String word_id = word.toLowerCase(); //word id is case sensitive and lowercase is required
return "https://od-api.oxforddictionaries.com:443/api/v1/entries/" + language + "/" + word_id;
}
//in android calling network requests on the main thread forbidden by default
//create class to do async job
private class CallbackTask extends AsyncTask<String, Integer, String> {
@Override
protected String doInBackground(String... params) {
//TODO: replace with your own app id and app key
final String app_id = "10742428";
final String app_key = "ada344f3a7a7c7de0315fb78c5c9d6f9";
try {
URL url = new URL(params[0]);
HttpsURLConnection urlConnection = (HttpsURLConnection) url.openConnection();
urlConnection.setRequestProperty("Accept","application/json");
urlConnection.setRequestProperty("app_id",app_id);
urlConnection.setRequestProperty("app_key",app_key);
// read the output from the server
BufferedReader reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
StringBuilder stringBuilder = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
stringBuilder.append(line + "\n");
}
return stringBuilder.toString();
}
catch (Exception e) {
e.printStackTrace();
return e.toString();
}
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
Log.d("This will be my result",result);
}
}
}
以下是我的输出。我只是在Logcat中打印它，但是一旦我得到了这个概念，我就会开始研究这个项目。
This will be my result: {
"metadata": {
"provider": "Oxford University Press"
},
"results": [
{
"id": "ace",
"language": "en",
"lexicalEntries": [
{
"entries": [
{
"etymologies": [
"Middle English (denoting the ‘one’ on dice): via Old French from Latin as ‘unity, a unit’"
],
"grammaticalFeatures": [
{
"text": "Singular",
"type": "Number"
}
],
"homographNumber": "000",
"senses": [
{
"definitions": [
"a playing card with a single spot on it, ranked as the highest card in its suit in most card games"
],
"domains": [
"Cards"
],
"examples": [
{
"registers": [
"figurative"
],
"text": "life had started dealing him aces again"
},
{
"text": "the ace of diamonds"
}
],
"id": "m_en_gbus0005680.006"
},
{
"definitions": [
"a person who excels at a particular sport or other activity"
],
"domains": [
"Sport"
],
"examples": [
{
"text": "a motorcycle ace"
}
],
"id": "m_en_gbus0005680.010",
"registers": [
"informal"
],
"subsenses": [
{
"definitions": [
"a pilot who has shot down many enemy aircraft"
],
"domains": [
"Air Force"
],
"examples": [
{
"text": "a Battle of Britain ace"
}
],
"id": "m_en_gbus0005680.011"
}
]
},
{
"definitions": [
"(in tennis and similar games) a service that an opponent is unable to return and thus wins a point"
],
"domains": [
"Tennis"
所以我的问题是如何从这个输出中仅提取'含义'部分？
答案 0 :(得分：0)
你提到的Json结果是不完整的。结果中的对象没有关闭。这就是你从json字符串得到结果的方式。
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
try {
JSONObject js = new JSONObject(result);
JSONArray results = js.getJSONArray("results");
for(int i = 0;i<results.length();i++){
JSONObject lentries = results.getJSONObject(i);
JSONArray la = lentries.getJSONArray("lexicalEntries");
for(int j=0;j<la.length();j++){
JSONObject entries = la.getJSONObject(j);
JSONArray e = entries.getJSONArray("entries");
for(int i1=0;i1<e.length();i1++){
JSONObject senses = la.getJSONObject(i1);
JSONArray s = entries.getJSONArray("senses");
JSONObject d = s.getJSONObject(0);
JSONArray de = d.getJSONArray("definitions");
def = de.getString(0);
}
}
}
Log.e("def",def);
} catch (JSONException e) {
e.printStackTrace();
}
答案 1 :(得分：-1)
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
//Log.d("This will be my result",result);
String def = "";
try {
JSONObject js = new JSONObject(result);
JSONArray results = js.getJSONArray("results");
for (int i = 0; i < results.length(); i++) {
JSONObject lentries = results.getJSONObject(i);
JSONArray la = lentries.getJSONArray("lexicalEntries");
for (int j = 0; j < la.length(); j++) {
JSONObject entries = la.getJSONObject(j);
JSONArray e = entries.getJSONArray("entries");
for (int k= 0; k < e.length(); k++) {
JSONObject senses = e.getJSONObject(k);
JSONArray s = senses.getJSONArray("senses");
JSONObject d = s.getJSONObject(0);
JSONArray de = d.getJSONArray("definitions");
def = de.getString(0);
}
}
}
Log.e("def", def);
} catch (JSONException e) {
e.printStackTrace();
}
//Log.d("This will be my result",result);
}