[英]PUT and POST getting 405 Method Not Allowed Error for Restful Web Services
[英]Request to web services restful with pojo object and method post
我创建了一个宁静的Web服务:
@POST
@Path("grd")
@Consumes("application/json")
@Produces("text/plain")
public String guardarDato(PostParams jsonObject) {
/*
something here
}
PostParams是一个pojo:
public class PostParams {
private final Map<String, String> postParamsList;
public PostParams() {
postParamsList = new HashMap<>();
}
public void addParameter(String name, String value) {
postParamsList.put(name, value);
}
public String getPostParamsList(String name) {
return postParamsList.get(name);
}
public void getPostParamsMap() {
if (postParamsList.isEmpty()) {
System.out.println("Parametros vacios");
} else {
for (String key : postParamsList.keySet()) {
System.out.println("Clave: " + key + " -> Valor: " + postParamsList.get(key));
}
}
}
}
我正在尝试使用HttpUrlConnection从android调用此Web服务,但是我的对象在我的Web服务中为null pojo。
try {
URL url = new URL("http://localhost:8080/VfqCh/hgt/opli/grd");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/json");
// conn.setRequestProperty("Accept", "application/json");
PostParams postParams = new PostParams();
postParams.addParameter("h", "51rt3");
postParams.addParameter("x", "dsfsd8698sdfs");
postParams.addParameter("ax", "Dairon");
postParams.addParameter("tf", "D");
// String input = "{\"qty\":100,\"name\":\"iPad 4\"}";
Gson gson = new Gson();
String gString = gson.toJson(postParams, PostParams.class);
try (OutputStreamWriter printout = new OutputStreamWriter(conn.getOutputStream())) {
printout.write(gString);
printout.flush();
}
if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {
throw new RuntimeException("Failed : HTTP error code : "
+ conn.getResponseCode());
}
BufferedReader br = new BufferedReader(new InputStreamReader(
(conn.getInputStream())));
String output;
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
System.out.println(output);
}
conn.disconnect();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
该信息将发送到Web服务,但该对象为null。 如果我更改了Web服务中接收的对象的类型(如果可以的话):
@POST
@Path("grd")
@Consumes("application/json")
@Produces("text/plain")
public String guardarDato(String jsonObject) {
/*
something here
}
但是我需要在Web服务中接收对象! 有可能的?
您为HashMap制作了POJO,但是您可能只使用了Gson已经提供的JsonObject
,并且基本上像HashMap一样工作。 然后,您将其toString
,并具有可发送到服务器的JSON字符串。 不需要Gson.toJson
,也不必担心它是否正确转换。
您的服务器正在接受JSON字符串,定义如下
@Consumes("application/json")
因此,这应该是方法
public String guardarDato(String jsonObject) {
您将需要将Gson添加为服务器的依赖项,然后您应该能够使用诸如PostParams params = Gson.fromJson(jsonObject, PostParams.class)
类的东西将JSON获取到对象,假设数据是从客户端正确发送的方面,但是如前所述,您的POJO不会在JsonObject
或纯HashMap
之上添加太多功能
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