123 lines
3.3 KiB
Java
123 lines
3.3 KiB
Java
package com.peanut.common.utils;
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import org.json.JSONObject;
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import java.io.IOException;
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import java.net.HttpURLConnection;
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import java.net.URL;
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public class TokenHolder {
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public static final String ASR_SCOPE = "audio_voice_assistant_get";
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public static final String TTS_SCOPE = "audio_tts_post";
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/**
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* url , Token的url，http可以改为https
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*/
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private static final String url = "http://openapi.baidu.com/oauth/2.0/token";
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/**
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* asr的权限 scope 是 "audio_voice_assistant_get" tts 的权限 scope 是
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* "audio_tts_post"
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*/
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private String scope;
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/**
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* 网页上申请语音识别应用获取的apiKey
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*/
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private String apiKey;
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/**
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* 网页上申请语音识别应用获取的secretKey
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*/
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private String secretKey;
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/**
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* 保存访问接口获取的token
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*/
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private String token;
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/**
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* 当前的时间戳，毫秒
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*/
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private long expiresAt;
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/**
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* @param apiKey
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* 网页上申请语音识别应用获取的apiKey
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* @param secretKey
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* 网页上申请语音识别应用获取的secretKey
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*/
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public TokenHolder(String apiKey, String secretKey, String scope) {
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this.apiKey = apiKey;
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this.secretKey = secretKey;
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this.scope = scope;
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}
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/**
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* 获取token，refresh 方法后调用有效
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*
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* @return
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*/
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public String getToken() {
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return token;
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}
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/**
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* 获取过期时间，refresh 方法后调用有效
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*
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* @return
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*/
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public long getExpiresAt() {
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return expiresAt;
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}
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/**
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* 获取token
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*
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* @return
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* @throws IOException
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* http请求错误
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* @throws DemoException
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* http接口返回不是 200, access_token未获取
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*/
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public void resfresh() throws Exception {
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String getTokenURL = url + "?grant_type=client_credentials" + "&client_id=" + ConnUtil.urlEncode(apiKey)
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+ "&client_secret=" + ConnUtil.urlEncode(secretKey);
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// 打印的url出来放到浏览器内可以复现
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System.out.println("token url:" + getTokenURL);
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URL url = new URL(getTokenURL);
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HttpURLConnection conn = (HttpURLConnection) url.openConnection();
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conn.setConnectTimeout(5000);
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String result = ConnUtil.getResponseString(conn);
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System.out.println("Token result json:" + result);
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parseJson(result);
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}
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/**
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* @param result
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* token接口获得的result
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* @throws DemoException
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*/
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private void parseJson(String result) throws Exception {
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JSONObject json = new JSONObject(result);
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if (!json.has("access_token")) {
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// 返回没有access_token字段
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throw new DemoException("access_token not obtained, " + result);
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}
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if (!json.has("scope")) {
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// 返回没有scope字段
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throw new DemoException("scopenot obtained, " + result);
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}
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if (!json.getString("scope").contains(scope)) {
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throw new DemoException("scope not exist, " + scope + "," + result);
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}
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token = json.getString("access_token");
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expiresAt = System.currentTimeMillis() + json.getLong("expires_in") * 1000;
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}
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}
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