restTemplate java.lang.IllegalArgumentException：“none”不包含“/”

Question

好的，首先是代码（它非常简单）：

@Controller
@RequestMapping("/")

public class HelloController {

private final static Logger logger = Logger.getLogger(HelloController.class);
@RequestMapping(method = RequestMethod.GET)
public String printWelcome(ModelMap model) {

    logger.info("ELO ELO");
    model.addAttribute("message", "Hello world!");

    RestTemplate restTemplate = new RestTemplate();

    String url = "http://192.168.0.200:8000/GPIO/11/function/in";
    //String url = "http://192.168.0.200:8000/GPIO/11/function";
    //restTemplate.getForObject(url, String.class);
    String test = "";

    restTemplate.postForObject(url, null, String.class);



    logger.info(test);
    return "hello";
}

我不是疯子的下一个例子是邮差的回复（chrome）：

并在完整错误日志的末尾：

例外情况

org.springframework.web.util.NestedServletException：请求处理失败；嵌套的异常为java.lang.IllegalArgumentException：“none”不包含“/”org.springframework.web.servlet.frameworkservlet.processRequest（frameworkservlet.java:927)org.springframework.web.servlet.frameworkservlet.doget（frameworkservlet.java:811)javax.servet.service（httpservlet.java:618)org.springframework.web.servet.frameworkservet.service（

请求标头：

Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding:gzip,deflate,sdch
Accept-Language:pl-PL,pl;q=0.8,en-US;q=0.6,en;q=0.4
Cache-Control:max-age=0
Connection:keep-alive
Cookie:__utma=212787668.2094541430.1400264829.1400264829.1400268775.2; __utmz=212787668.1400264829.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
Host:192.168.0.200:8000
User-Agent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.137 Safari/537.36

响应标头：

Cache-Control:no-cache
Content-Length:2
Content-Type:None
Date:Fri, 16 May 2014 22:37:16 GMT
Server:WebIOPi/0.7.0/Python3.2

Answer 1

您是否尝试像下面这样设置标题,

 HttpHeaders headers = new HttpHeaders();
 headers.setContentType(MediaType.MULTIPART_FORM_DATA);//or any other required
 HttpEntity request = new HttpEntity(null, headers);
 RestTemplate restTemplate = new RestTemplate();
 String url = "http://192.168.0.200:8000/GPIO/11/function/in";
 String response = restTemplate.postForObject(url,request,String.class);