如何在Spring Boot中使用RestTemplate将参数作为POST请求传递到端点？

huangapple
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英文:

How can I pass parameter as post to endpoint using RestTemplate in springboot?

问题

I am using RestTemplate in my project to make a post request to an endpoint. Basically I have lambda function written in nestjs. I am injecting lambda service in my java project. If vehicleName if condition passes, I would like to POST that vehicleName to the url. Is there any suggestions on how I can achieve this?

Here is my code:

  1. private void callLambdaService(String vehicleTypesParamValue)
  2. {
  3.     final String url = "http://localhost:3000/dispatcher/service/api/message";
  5.     final String zMETHOD = "callLambdaService - ";
  7.     RestTemplate restTemplate = new RestTemplate();
  8.     restTemplate.exchange(url, HttpMethod.POST, vehicleName, String.class);
  10.     HttpHeaders headers = new HttpHeaders();
  11.     headers.setContentType(MediaType.APPLICATION_JSON);
  12.     String result = restTemplate.getForObject(url, String.class);
  14.     VehicleType vehicleName=null;
  16.     String[] vehicleTypes = vehicleTypesParamValue.split(",");
  17.     Set<VehicleType> results = new HashSet<>();
  18.     try
  19.     {
  20.         for (String vehicleTypeParam : vehicleTypes)
  21.         {
  22.             vehicleName =
  23.                     vehicleTypeFactory.getVehicleTypeByIspName(
  24.                             vehicleTypeParam);
  25.             if (vehicleName == null)
  26.             {
  27.                 LOGGER.warn("No codes for products or vehicle types were supplied");
  28.             }
  29.             else if (vehicleName.equals("US Mutual Fund"))
  30.             {
  31.                 LOGGER.info(zMETHOD + "Vehicles provided: "
  32.                         + vehicleName.getIspName());
  34.             }
  35.             else
  36.             {
  37.                 LOGGER.warn(
  38.                         String.format("Unknown vehicle type provided: [%s]",
  39.                                 vehicleName.getIspName()));
  40.             }
  42.         }
  43.     }catch (Exception e) {
  44.         LOG.error("Unable to get vehicletype data", e);
  45.     }
  47. }

And the testing command:

  1. curl -X POST "https://gdxdispatcher.dev.awstrp.net/dispatcher/service/api/message" -H "accept: */*" -H "Content-Type: application/json" -d "{\"vehicleType\":\"US Mutual Fund,VIP\",\"source\":\"PCS_DATACACHE_TOPIC\"}"
英文:

I am using RestTemplate in my project to make a post request to an endpoint. Basically I have lambda function written in nestjs. I am injecting lambda service in my java project. If vehicleName if condition passes, I would like to POST that vehicleName to the url. Is there any suggestions on how I can achieve this? I would be testing my application using this command

  1. curl -X POST &quot;https://gdxdispatcher.dev.awstrp.net/dispatcher/service/api/message&quot; -H &quot;accept: */*&quot; -H &quot;Content-Type: application/json&quot; -d &quot;{\&quot;vehicleType\&quot;:\&quot;US Mutual Fund,VIP\&quot;,\&quot;source\&quot;:\&quot;PCS_DATACACHE_TOPIC\&quot;}&quot;

Here is my code

  2. private void callLambdaService(String vehicleTypesParamValue)
  3. {
  4. final String url = &quot;http://localhost:3000/dispatcher/service/api/message&quot;;
  5. final String zMETHOD = &quot;callLambdaService - &quot;;
  6. RestTemplate restTemplate = new RestTemplate();
  7. restTemplate.exchange(&quot;url&quot;, HttpMethod.POST, vehicleName, String.class);
  8. HttpHeaders headers = new HttpHeaders();
  9. headers.setContentType(MediaType.APPLICATION_JSON);
  10. String result = restTemplate.getForObject(url, String.class);
  11. VehicleType vehicleName=null;
  12. String[] vehicleTypes = vehicleTypesParamValue.split(&quot;,&quot;);
  13. Set&lt;VehicleType&gt; results = new HashSet&lt;&gt;();
  14. try
  15. {
  16. for (String vehicleTypeParam : vehicleTypes)
  17. {
  18. vehicleName =
  19. vehicleTypeFactory.getVehicleTypeByIspName(
  20. vehicleTypeParam);
  21. if (vehicleName == null)
  22. {
  23. LOGGER.warn(&quot;No codes for products or vehicle types were supplied&quot;);
  24. }
  25. else if (vehicleName.equals(&quot;US Mutual Fund&quot;))
  26. {
  27. LOGGER.info(zMETHOD + &quot;Vehicles provided: &quot;
  28. + vehicleName.getIspName());
  29. }
  30. else
  31. {
  32. LOGGER.warn(
  33. String.format(&quot;Unknown vehicle type provided: [%s]&quot;,
  34. vehicleName.getIspName()));
  35. }
  36. }
  37. }catch (Exception e) {
  38. LOG.error(&quot;Unable to get vehicletype data&quot;, e);
  39. }
  40. }
  41. </details>
  42. # 答案1
  43. **得分**: 1
  44. 1. 创建一个表示HTTP请求的数据结构的 **headers**。
  45. ```java
  46. HttpHeaders headers = new HttpHeaders();
  47. headers.setContentType(MediaType.APPLICATION_JSON);

  1. 从 org.json 包中创建一个可修改的名称/值映射集合的 JSONObject，并放入名称和值。

    1. JSONObject requestBody = new JSONObject();
    2. requestBody.put("vehicleType", "US Mutual Fund,VIP");
    3. requestBody.put("source", "PCS_DATACACHE_TOPIC");

  2. 创建代表HTTP请求或响应的 HttpEntity，在这种情况下，请求由headers和body组成。

    1. HttpEntity<String> request = new HttpEntity<>(requestBody.toString(), headers);

  3. 通过 posting 对象到给定的URI模板来创建一个新的资源。它将结果自动转换为responseType参数中指定的类型。然后，我们将ObjectNode定义为我们的资源，响应类型定义为我们的结果。

    1. ObjectNode result = restTemplate.postForObject("https://gdxdispatcher.dev.awstrp.net/dispatcher/service/api/message", request, ObjectNode.class);
英文:

Well, following the instructions:

  1. Create headers which will be a data structure representing HTTP request.

    1.  HttpHeaders headers = new HttpHeaders();
    2. headers.setContentType(MediaType.APPLICATION_JSON);

  2. Build a JSONObject from org.json package that is a modifiable set of name/value mappings and put names and values.

    1.  JSONObject requestBody = new JSONObject();
    2. requestBody.put(&quot;vehicleType&quot;, &quot;US Mutual Fund,VIP&quot;);
    3. requestBody.put(&quot;source&quot;, &quot;PCS_DATACACHE_TOPIC&quot;);

  3. Create our HttpEntity that represents an HTTP request or response, in this case request consisting of headers and body.

    1.  HttpEntity&lt;String&gt; request = new HttpEntity&lt;&gt;(requestBody.toString(), headers);

  4. Create a new resource by posting an object to the given URI template.
    It returns the result as automatically converted to the type specified in the responseType parameter.
    Then we define a ObjectNode as our resource and response type as our result.

    1.  ObjectNode result = restTemplate.postForObject(&quot;https://gdxdispatcher.dev.awstrp.net/dispatcher/service/api/message&quot;, 
    2. request, ObjectNode.class);

huangapple
  • 本文由 发表于 2020年1月4日 00:20:55
  • 转载请务必保留本文链接：https://go.coder-hub.com/59581895.html
  • lambda
  • nestjs
  • post
  • resttemplate
  • spring-boot
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