通过 restlet API 调用 RESTful WS

Question

我正在尝试从我的客户端代码（基于 Restlet）调用 WS，但我在 client.post 方法上收到错误的请求异常（HTTP 状态代码 400）。

public static void main(String[] args) throws Exception{
    String serviceUrl = "http://localhost:8080/MPosBEService"+BeServicePath.MERCHANT_REGISTRATION;
    //String serviceUrl = "http://192.168.101.124:8081/be"+BeServicePath.MERCHANT_REGISTRATION;
    ClientResource client = new ClientResource( serviceUrl );
    addHeaders( client );
    objectMapper=new ObjectMapper();
    objectMapper.configure(Feature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    objectMapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);
    try{
        Form form = new Form();
        form.set("username", "intendanet");
        form.set("password", "1111");
        client.post( form, MediaType.APPLICATION_JSON );//**this line is the culprit**
        //client.post(new  MerchantRegisterRequestPojo("intendanet","1111"), MediaType.APPLICATION_JSON );
    }catch(Exception e) 
    {
        System.out.println(e.getLocalizedMessage());
        throw e;
    }
    Response response = client.getResponse();
    if( response.getStatus().getCode() == 200 )
    {
        m = deserializeJson( (HttpEntity)response.getEntity(), MerchantPojo.class );
        System.out.println("Result:" + m.id);
    }else {
        System.out.println("Exception: "+ response.getStatus().getCode());
        throw new HttpStatusException(response.getStatus().getCode());
    }
}
static private void addHeaders(ClientResource client){
    client.getRequestAttributes().put(BeServiceHTTPHeader.REQ_MPOS_BE_SERVICE_LANGUAGE_ID.toString(), "1"+"");
    client.getRequestAttributes().put(BeServiceHTTPHeader.REQ_MPOS_BE_SERVICE_DEVICE_APP_VERSION.toString(), "1"+"");
    client.getRequestAttributes().put(BeServiceHTTPHeader.REQ_MPOS_BE_SERVICE_DEVICE_GENERATED_ID.toString(), "flskdjf9ksmflskmfl");
    client.getRequestAttributes().put(BeServiceHTTPHeader.REQ_MPOS_BE_SERVICE_DEVICE_INFO.toString(), "ovo je moj device!");
}
static private <T> T deserializeJson(HttpEntity json, Class<T> targetType) throws Exception{
    return objectMapper.readValue(EntityUtils.toString(json), targetType);
}

谢谢

Answer 1

我不完全是您的 REST 服务所期望的，但我在您的代码中看到两个潜在问题。

首先，响应中的标头设置不正确。您应该更新方法addHeaders如下所述：

static private void addHeaders(ClientResource client){
    Series<Header> headers = (Series<Header>) cr.getRequestAttributes().get(
                                     "org.restlet.http.headers");
    if (headers==null) {
        headers = new Series<Header>(Header.class);
        cr.getRequestAttributes().put(
                "org.restlet.http.headers", headers);
    }
    headers.set(BeServiceHTTPHeader.REQ_MPOS_BE_SERVICE_LANGUAGE_ID.toString(), "1");
    headers.put(BeServiceHTTPHeader.REQ_MPOS_BE_SERVICE_DEVICE_APP_VERSION.toString(), "1");
    headers.put(BeServiceHTTPHeader.REQ_MPOS_BE_SERVICE_DEVICE_GENERATED_ID.to String(), "flskdjf9ksmflskmfl");
    headers.put(BeServiceHTTPHeader.REQ_MPOS_BE_SERVICE_DEVICE_INFO.toString(), "ovo je moj device!");
}

其次，您需要注意您发送的内容和相关媒体类型。你应该有这样的东西：

// With form
Form form = new Form();
form.set("username", "intendanet");
form.set("password", "1111");
client.post(form, MediaType.APPLICATION_FORM_URLENCODED);
// With JSON
JSONObject jsonObj = new JSONObject
jsonObj.put("username", "intendanet");
jsonObj.put("password", "1111");
client.post(new JsonRepresentation(jsonObj));

希望对您有所帮助，蒂埃里