Code call interface error http code 405

[zengqinchris]

`public static String httpRequestUtils(String url, String params, String requestMethod) {
PrintWriter out = null;
BufferedReader in = null;
StringBuilder result = new StringBuilder();
try {
URL reqUrl = new URL(url);
// 建立连接
HttpURLConnection conn = (HttpURLConnection)reqUrl.openConnection();
//设置请求头
conn.setRequestProperty("Content-Type", "application/json;charset=utf-8");
conn.setRequestProperty("token", "11111111111111111111");
// conn.setRequestProperty("connection", "Keep-Alive");
// conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");

        conn.setDoOutput(true);  //设置为true才可以使用conn.getOutputStream().write()
        conn.setDoInput(true); //可以使用conn.getInputStream().read();
        conn.setRequestMethod(requestMethod);

        if (!"".equals(params)) {
            //写入参数
            out = new PrintWriter(conn.getOutputStream());
            //设置参数，可以直接写&参数，也可以直接传入拼接好的
            out.print(params);
            // flush输出流的缓冲
            out.flush();
        }

        // 定义BufferedReader输入流来读取URL的响应
        in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));
        String line = in.readLine();
        while (line != null) {
            result.append(line);
            line = in.readLine();
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        if (out != null) {
            out.close();
        }
        if (in != null) {
            try {
                in.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    return result.toString();
}


public static void main(String[] args) {
    String str = httpRequestUtils("http://xxxxxxx/dolphinscheduler/projects/online-test/process/list","pageNo=1&pageSize=50","GET");
    System.out.println(str);
}

`

报错
java.io.IOException: Server returned HTTP response code: 405 for URL: http://xxxxxxxxxxxxx/dolphinscheduler/projects/online-test/process/list at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1900) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1498) at com.wumii.data.platform.manager.service.meta.SchedulerWorkflowService.httpRequestUtils(SchedulerWorkflowService.java:104) at com.wumii.data.platform.manager.service.meta.SchedulerWorkflowService.main(SchedulerWorkflowService.java:129)

[samz406]

405 Method Not Allowed ,so. Please use postman to call the interface first. If it is correct, it means that there is a problem with the value of your calling method. Please check the method call parameters