爬有道翻译的几种方法

方法一：

刚开始用selenium来爬

public static String changeArticle(String srcTxt) {
		WebDriver driver = SeleniumUtil.getNoHeadDriver();
		driver.get("http://fanyi.youdao.com/");
		
		try {
			driver.findElement(By.id("inputOriginal")).sendKeys(srcTxt);
			String result = driver.findElement(By.id("transTarget")).getAttribute("innerHTML");
			while (result == null || "".equals(result)) {
				Thread.sleep(100);
				result = driver.findElement(By.id("transTarget")).getAttribute("innerHTML");
			}
			result = HtmlUtil.changeP(result);
			result=StringUtil.kill(result, "<", ">");
			
			SeleniumUtil.click(driver, driver.findElement(By.id("inputDelete")));
			driver.findElement(By.id("inputOriginal")).sendKeys(result);
			Thread.sleep(100);
			result = driver.findElement(By.id("transTarget")).getAttribute("innerHTML");
			while (result == null || "".equals(result)) {
				Thread.sleep(100);
				result = driver.findElement(By.id("transTarget")).getAttribute("innerHTML");
			}
			result = HtmlUtil.changeP(result);
			result=StringUtil.kill(result, "<", ">");
			
			return result;
		} catch (InterruptedException e) {
			e.printStackTrace();
		} finally {
			driver.close();
			driver.quit();
		}
		return "";
	}

效率太低，放弃了

方法二：

看了网上的，注释掉salt、sign

fanyi.youdao.com/translate_o改成了fanyi.youdao.com/translate

英文转中文没问题，中文转英文，返回的就是乱码，我一度以为是我的post方法导致的，折腾了一整夜，放弃了

public static String translate_en2zh(Map params,String i,String from,String to) throws Exception {//这个只能英文转中文
		Map forms=new HashMap();
		forms.put("i", i);
		forms.put("from",from);//en zh-CHS vi
		forms.put("to", to);
		forms.put("smartresult", "dict");
		forms.put("client", "fanyideskweb");
//		forms.put("salt", "16374128938108");
//		forms.put("sign", "40869be25369a6f5a33a689596a4ffea");
		forms.put("lts", "1637412893810");
		forms.put("bv", "b0ff5d17f404993192085bf8b1e93587");
		forms.put("doctype", "json");
		forms.put("version", "2.1");
		forms.put("keyfrom", "fanyi.web");
		forms.put("action", "FY_BY_REALTlME");
		String post = SpiderUtil.post("https://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule", params, forms);
		return post;
	}

方法三：

破解sign的奥秘

网上有现成的方法，但是给我返回了{"errorCode":50}

后来发现是sign的密钥不同。自己写了个getCode()方法，让它自动获取，总算没问题了。

我后来想将越南语转成英文，返回了{"errorCode":40}。再看了一下网站，发现都是中文转其他，或者其他转中文，没有其他转其他的操作。应该是网站不支持这种转换，不了了之。

public static String translate(Map params,String i,String from,String to) throws Exception {
		params.clear();
		 params.put("cookie","OUTFOX_SEARCH_USER_ID=1799185238@10.169.0.83;");
		params.put("Referer","http://fanyi.youdao.com/");
		 params.put("User-Agent","Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36");
	        
		Map forms=new HashMap();
		String bv= DigestUtils.md5Hex("Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36");
		String ts=String.valueOf(System.currentTimeMillis());
		String slat = String.valueOf(ts + (long) (Math.random() * 10 + 1));
	     String sign = DigestUtils.md5Hex("fanyideskweb" + i + slat + getCode());
		forms.put("i", i);
		forms.put("from",from);//en zh-CHS vi
		forms.put("to", to);
		forms.put("smartresult", "dict");
		forms.put("client", "fanyideskweb");
		forms.put("salt", slat);
		forms.put("sign", sign);
		forms.put("lts", ts);
		forms.put("bv", bv);
		forms.put("doctype", "json");
		forms.put("version", "2.1");
		forms.put("keyfrom", "fanyi.web");
		forms.put("action", "FY_BY_REALTlME");
		forms.put("typoResult", "true");
		String post = SpiderUtil.post("http://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule", params, forms);
		return post;
	}
	private static String getCode() throws IOException{
		String downhref="";
		String page=SpiderUtil.getPageContent("http://fanyi.youdao.com/");
		for(String s:Hp.find(page, "script[attr=src]")){
			if(s.endsWith("fanyi.min.js")){
				downhref=s;
				break;
			}
		}
		String tem2="c:/temspace/tem"+System.currentTimeMillis()+".txt";
		SpiderUtil.download(downhref, tem2);
		String file = FileUtil.getFile(tem2);
		FileUtil.del(tem2);
		String feature = SearchUtil.getListWithFeature(file, Arrays.asList("sign:n.md5("","")")).get(0);
		feature=feature.replace("sign:n.md5("fanyideskweb"+e+i+"", "").replace("")", "");
		return feature;
	}