使用restTemplate的Post方法，错误java.net.UnknownHostException

Question

我需要将一个Json发布到服务器并获得Json结果，我正在使用restTemplate实现该结果。但问题是它总是出错

UnknownHostException

@RequestMapping(value = "/test")
public String test(HttpServletRequest request, HttpServletResponse response){
    String user=request.getParameter("txtUser");
    HttpSession session = request.getSession();
    session.setAttribute("result",accountService.findFarmsByUser(user));
    return "test";
}

<form action="test">
    <input type="text" value="insert search" name="txtUser">
    <input type="submit" value="submit" name="btnSubmit">
    <input type="text" value="" name="result">
</form>

  //create  request json
    JSONObject json = new JSONObject().put(
            "input",
            new JSONObject().put(
                    "username",
                    "Administrator"));

    // set headers
    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_JSON);
    HttpEntity<String> entity = new HttpEntity<String>(json.toString(), headers);
    headers.set(proxyHost,Host);
    headers.set(proxyPort,Port);

    ResponseEntity<String> loginResponse = restTemplate
            .exchange(url, HttpMethod.POST, entity, String.class);
    logger.info("reutrn data: {}",loginResponse);

错误：

org.springframework.web.client.ResourceAccessException：“http：//{myserver：port}/thingworx/things/{...}/services/finduser”的POST请求时出现I/O错误：{myserver}；嵌套异常为java.net.UnknownHostException：{myserver}（位于org.springframework.web.client.restTemplate.doExecute（restTemplate.java:607)（位于org.springframework.web.client.restTemplate.execute（restTemplate.java:557)（位于org.springframework.web.client.restTemplate.execute（restTemplate.java:557)（位于org.springframework.web.client.restTemplate.execute（restTemplate.java:475)（位于spring.web.services.impl.AccountServeImpl.findUser

Answer 1

可能是你公司的代理人。您可以在spring配置中定义它：

    @Bean
    public RestTemplate restTemplate(RestTemplateBuilder builder) {

        SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
        Proxy proxy = new Proxy(Type.HTTP, new InetSocketAddress("clientproxy.corp.url", 8080));
        requestFactory.setProxy(proxy);
        return builder.requestFactory(requestFactory).setConnectTimeout(5000).setReadTimeout(5000).build();
    }