Android有道词典开发

第一步，申请API key，申请地址：http://fanyi.youdao.com/openapi?path=data-mode

数据接口：

http://fanyi.youdao.com/openapi.do?keyfrom=<keyfrom>&key=<key>&type=data&doctype=<doctype>&version=1.1&q=要翻译的文本

版本：1.1，请求方式：get，编码方式：utf-8

主要功能：中英互译，同时获得有道翻译结果和有道词典结果（可能没有）

参数说明：

　type - 返回结果的类型，固定为data

　doctype - 返回结果的数据格式，xml或json或jsonp

　version - 版本，当前最新版本为1.1

　q - 要翻译的文本，不能超过200个字符，需要使用utf-8编码

errorCode：

　0 - 正常

　20 - 要翻译的文本过长

　30 - 无法进行有效的翻译

　40 - 不支持的语言类型

　50 - 无效的key

json数据格式举例

请求链接：http://fanyi.youdao.com/openapi.do?keyfrom=<keyfrom>&key=<key>&type=data&doctype=json&version=1.1&q=翻译

返回的json数据：

{

"errorCode":0

"query":"翻译",

"translation":["translation"], // 有道翻译

"basic":{ // 有道词典-基本词典

"phonetic":"fān yì",

"explains":[

"translate",

"interpret"

]

"web":[ // 有道词典-网络释义

{

"key":"翻译",

"value":["translator","translation","translate","Interpreter"]

{...}

]

}

下面实现android客户端功能。

main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical"     android:background="@drawable/a">    <EditText        android:id="@+id/edit"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:hint="输入你要查询的内容......" />    <Button        android:id="@+id/search"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:hint="查询" />    <ScrollView        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:scrollbars="none" >        <TextView            android:id="@+id/text"            android:layout_width="fill_parent"            android:layout_height="wrap_content"             android:textColor="#000000"/>    </ScrollView></LinearLayout>

实现效果如下：

MainActivity.java

import org.apache.http.HttpResponse;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import org.json.JSONArray;import org.json.JSONObject;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity {private EditText edit = null;private Button search = null;private TextView text = null;private String YouDaoBaseUrl = "http://fanyi.youdao.com/openapi.do";private String YouDaoKeyFrom = "你的daoKeyFrom";private String YouDaoKey = "你的api key";private String YouDaoType = "data";private String YouDaoDoctype = "json";private String YouDaoVersion = "1.1";public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);init();}private void init() {edit = (EditText) findViewById(R.id.edit);search = (Button) findViewById(R.id.search);search.setOnClickListener(new searchListener());text = (TextView) findViewById(R.id.text);}private class searchListener implements OnClickListener {@Overridepublic void onClick(View v) {String YouDaoSearchContent = edit.getText().toString().trim();String YouDaoUrl = YouDaoBaseUrl + "?keyfrom=" + YouDaoKeyFrom+ "&key=" + YouDaoKey + "&type=" + YouDaoType + "&doctype="+ YouDaoDoctype + "&type=" + YouDaoType + "&version="+ YouDaoVersion + "&q=" + YouDaoSearchContent;try {AnalyzingOfJson(YouDaoUrl);} catch (Exception e) {e.printStackTrace();}}}private void AnalyzingOfJson(String url) throws Exception {// 第一步，创建HttpGet对象HttpGet httpGet = new HttpGet(url);// 第二步，使用execute方法发送HTTP GET请求，并返回HttpResponse对象HttpResponse httpResponse = new DefaultHttpClient().execute(httpGet);if (httpResponse.getStatusLine().getStatusCode() == 200) {// 第三步，使用getEntity方法活得返回结果String result = EntityUtils.toString(httpResponse.getEntity());System.out.println("result:" + result);JSONArray jsonArray = new JSONArray("[" + result + "]");String message = null;for (int i = 0; i < jsonArray.length(); i++) {JSONObject jsonObject = jsonArray.getJSONObject(i);if (jsonObject != null) {String errorCode = jsonObject.getString("errorCode");if (errorCode.equals("20")) {Toast.makeText(getApplicationContext(), "要翻译的文本过长",Toast.LENGTH_SHORT);} else if (errorCode.equals("30 ")) {Toast.makeText(getApplicationContext(), "无法进行有效的翻译",Toast.LENGTH_SHORT);} else if (errorCode.equals("40")) {Toast.makeText(getApplicationContext(), "不支持的语言类型",Toast.LENGTH_SHORT);} else if (errorCode.equals("50")) {Toast.makeText(getApplicationContext(), "无效的key",Toast.LENGTH_SHORT);} else {// 要翻译的内容String query = jsonObject.getString("query");message = query;// 翻译内容String translation = jsonObject.getString("translation");message += "\t" + translation;// 有道词典-基本词典if (jsonObject.has("basic")) {JSONObject basic = jsonObject.getJSONObject("basic");if (basic.has("phonetic")) {String phonetic = basic.getString("phonetic");message += "\n\t" + phonetic;}if (basic.has("explains")) {String explains = basic.getString("explains");message += "\n\t" + explains;}}// 有道词典-网络释义if (jsonObject.has("web")) {String web = jsonObject.getString("web");JSONArray webString = new JSONArray("[" + web + "]");message += "\n网络释义：";JSONArray webArray = webString.getJSONArray(0);int count = 0;while (!webArray.isNull(count)) {if (webArray.getJSONObject(count).has("key")) {String key = webArray.getJSONObject(count).getString("key");message += "\n\t<" + (count + 1) + ">"+ key;}if (webArray.getJSONObject(count).has("value")) {String value = webArray.getJSONObject(count).getString("value");message += "\n\t   " + value;}count++;}}}}}text.setText(message);} else {Toast.makeText(getApplicationContext(), "提取异常", Toast.LENGTH_SHORT);}}}

运行效果如下：最后，勿忘添加Manifest.xml权限

    <uses-permission android:name="android.permission.INTERNET"/>     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>

json数据格式举例

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