【发布时间】：2017-06-08 07:43:30
【问题描述】：
这是我从文档中获得的代码，我知道了，我收到了 JSON 格式的结果。但我只需要这个词的含义。所以谁能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，请帮助我。
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，但一旦我得到这个概念，我就会开始着手这个项目。
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只提取“意义”部分？
【问题讨论】：
-
开始使用改造，UrlConnections 已经死了。
-
您是否首先搜索过如何在 Java/Android 中解析 JSON？有很多问题和教程向您展示如何解析 JSON。一些有用的搜索关键字是
java json parsing和android json parsing