门户网站建设方案 模板页面优化的方法
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<String, String> params = new HashMap<String, String>();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<String, String> params2) throws UnsupportedEncodingException {MultiValueMap<String, String> params = new LinkedMultiValueMap<>();HttpHeaders headers = new HttpHeaders();headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);HttpEntity<MultiValueMap<String, String>> 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<String> 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;}}}