spring java將一個網頁鏈接轉化爲html字符串並當作一個頁面返回給瀏覽器

導入依賴

 <dependency>
        <groupId>org.jsoup</groupId>
        <artifactId>jsoup</artifactId>
        <version>1.10.3</version>
    </dependency>

 

import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;


	public String doPost(String url, Map<String, String> param) {
        // 創建Httpclient對象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 創建Http Post請求
            HttpPost httpPost = new HttpPost(url);
            // 創建參數列表
            if (param != null) {
                List<NameValuePair> paramList = new ArrayList<>();
                for (String key : param.keySet()) {
                    paramList.add(new BasicNameValuePair(key, param.get(key)));
                }
                // 模擬表單
                UrlEncodedFormEntity entity = new UrlEncodedFormEntity(paramList,"utf-8");
                httpPost.setEntity(entity);
            }
            // 執行http請求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
 
        return resultString;
    }
	/**
	 * 操作html字符串
	 * @param request
	 * @param response
	 * @throws IOException
	 */
	@GetMapping("newsInfo")
	public void WStoHtml(HttpServletRequest request,HttpServletResponse response) throws IOException{
		String url = request.getParameter("url");
		//String url = "http://localhost:8082/bim/static/form2/ApplicationFormTable.htm";
		String body = doPost(url,new HashMap<String, String>());//body爲獲取的html代碼
	    //System.out.println(body);
	    //System.out.println("11111");
	    Document doc = Jsoup.parse(body);
	    Elements es =  doc.select("table");
	    for (Element element : es) {
            element.html("123");//將table的內容替換爲123
        }
	    for (Element element : es) {
            System.out.println(element.html());
        }
	    System.out.println(doc.outerHtml());
	    response.setContentType("text/html;charset=utf-8"); 
	    PrintWriter out=response.getWriter();
	    out.println(doc.outerHtml());
	}