我们如何调用带有多个参数的spring API？

Question

I tried several ways to call the spring API from spring controller but I could not make it. Can someone please give me some clue on how to post value to the API like this?

@POST
@Path("/referencesfromconverter/update/{referenceType}/{jsonOutput}")
public void saveReferences(@PathParam("referenceType") String referenceType, 
                           @PathParam("jsonOutput") String jsonOutput)

My code to call the API but it is not working.

public static void sendPostReferences(String referenceType,String jsonOutput) throws Exception
{
    List<NameValuePair> params=new ArrayList<>();
    String       postUrl       = "http://localhost:8181/EngineServer/rest/converterbuilder/json/referencesfromconverter/update";
    HttpClient   httpClient    = HttpClientBuilder.create().build();
    HttpPost     post          = new HttpPost(postUrl);

    params.add(new BasicNameValuePair(referenceType,jsonOutput));
    try{
        post.setEntity(new UrlEncodedFormEntity(params,"UTF-8"));
        post.setHeader("Content-type", "application/json");

        String authString = "admin" + ":" + "admin";
        System.out.println("auth string: " + authString);

        byte[] authEncBytes = Base64.getEncoder().encode(authString.getBytes());
        String authStringEnc = new String(authEncBytes);
        System.out.println("Base64 encoded auth string: " + authStringEnc);
        post.setHeader("Authorization", "Basic " + authStringEnc);
        HttpResponse response=httpClient.execute(post);
        log.info(String.valueOf(response.getStatusLine().getStatusCode()));
        log.info(String.valueOf(response.getStatusLine().getReasonPhrase()));
    }catch(Exception ex){
        ex.printStackTrace();
    }

Answer 1

Since you are already using Spring, I would recommend to build URL using UriComponentsBuilder :

URI postUrl = UriComponentsBuilder
    .fromUriString("http://localhost:8181/EngineServer/rest/converterbuilder/json")
    .path("/referencesfromconverter/update/{referenceType}/{jsonOutput}")
    .buildAndExpand(referenceType, jsonOutput)
    .encode()
    .toUri();

And then pass it as parameter to HttpPost constructor.

Answer 2

I see your problem. Use params.add will produce url like this : /referencesfromconverter/update?referenceType=jsonOutput

You must concat your params with url. Du something like this :

String url = "/referencesfromconverter/update/" + referenceType + "/" + jsonOutput;