pom檔案

		
		<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.5</version>
</dependency>
		

get方法

 @RequestMapping("redirect")
    @ResponseBody
    public JSONObject getRedirectUrl(HttpServletRequest request, String path) throws UnsupportedEncodingException
    {

        if (!path.startsWith("\\d"))
        {
            path = "http://localhost:8080/" + path;

        }
        else
        {

            path = "http://" + path;
        }
        // 獲取引數
        Map<String, String[]> parameterMap = request.getParameterMap();
        Set<Entry<String, String[]>> entrySet = parameterMap.entrySet();
        for (Entry<String, String[]> entry : entrySet)
        {
            if (!"path".equals(entry.getKey()))
            {
                if (StringUtils.isNotBlank(entry.getValue()[0]))
                {

                    path += entry.getKey() + "=" + URLEncoder.encode(entry.getValue()[0], "utf-8") + "&";
                }
            }
        }

        JSONObject json = null;

        // 1.使用預設的配置的httpclient
        CloseableHttpClient client = HttpClients.createDefault();
        // 2.使用get方法
        HttpGet httpGet = new HttpGet(path);
        CloseableHttpResponse response = null;

        try
        {
            // 3.執行請求，獲取響應
            response = client.execute(httpGet);

            // 看請求是否成功，這兒列印的是http狀態碼
            System.out.println(response.getStatusLine().getStatusCode());
            // 4.獲取響應的實體內容，就是我們所要抓取得網頁內容
            HttpEntity entity = response.getEntity();

            // 5.將其列印到控制檯上面
            // 方法一：使用EntityUtils
            if (entity != null)
            {
                String json_String = EntityUtils.toString(entity, "utf-8");
                // System.out.println(json_String);
                json = JSONObject.parseObject(json_String);
            }
            EntityUtils.consume(entity);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }

        return json;
    }