百度翻译API整合SpringBoot

案例背景,按照官方给的Demo,实在是太啰嗦了,

大致步骤

封装数据>签名>发送请求,

仔细一看劈里啪啦一大堆,最后还要手动关流关连接,难道整合到SpringBoot项目里面我还得为内存管理考虑

所以就有了如下需求

使用

RestTemplate的对象进行发送请求数据,RestTemplate由springboot自行管理

package com.example.demo2.baidu2;

import org.springframework.http.*;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;

import java.io.UnsupportedEncodingException;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.util.HashMap;
import java.util.Map;

public class Trans {
    private static final String APP_ID = "自己的APPID";
    private static final String SECURITY_KEY = "自己的密钥";

    private static final String TRANS_API_HOST = "http://api.fanyi.baidu.com/api/trans/vip/translate";

    public static void main(String[] args) throws UnsupportedEncodingException {
        String query = "高度600米";


        Map params = new HashMap();
        params.put("q", query);
        params.put("from", "auto");
        params.put("to", "en");
        params.put("appid", APP_ID);
        // 随机数
        String salt = String.valueOf(System.currentTimeMillis());
        params.put("salt", salt);
        // 签名
        String src = APP_ID + query + salt + SECURITY_KEY; // 加密前的原文
        String md5 = getMD5(src);
        md5= md5.toLowerCase();
        params.put("sign", md5);
        String s = get(TRANS_API_HOST, params);
        System.out.println(s);

    }

    public static String get(String host, Map params2) throws UnsupportedEncodingException {

        MultiValueMap params = new LinkedMultiValueMap<>();
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
        HttpEntity> requestEntity = new HttpEntity<>(params, headers);
        String s = params2.get("q");
        String salt = params2.get("salt");
        String appid = params2.get("appid");
        String to = params2.get("to");
        String from = params2.get("from");
        String sign = params2.get("sign");

//        String encode = URLEncoder.encode(s, "UTF-8");
        params.add("salt",salt);
        params.add("appid",appid);
        params.add("to",to);
        params.add("from",from);
        params.add("q",s);
        params.add("sign",sign);



        RestTemplate restTemplate = new RestTemplate();
        ResponseEntity response = restTemplate.exchange(host, HttpMethod.POST, requestEntity, String.class);

        int statusCode = response.getStatusCodeValue();
        if (statusCode != 200) {
            System.out.println("Http错误码：" + statusCode);
        }

        return response.getBody();

    }

    public static String getMD5(String s) {
        char[] hexDigits = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
        try {
            byte[] btInput = s.getBytes(StandardCharsets.UTF_8);
            MessageDigest mdInst = MessageDigest.getInstance("MD5");
            mdInst.update(btInput);
            byte[] md = mdInst.digest();
            int j = md.length;
            char[] str = new char[j * 2];
            int k = 0;
            for (byte byte0 : md) {
                str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                str[k++] = hexDigits[byte0 & 0xf];
            }
            return new String(str);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }


}