如何使用post方法在json数据中发送请求有效载荷

Question

String pay= "["
            + "{"
            + "\"internalAssessmentResponseId\" : \"Mer\\/ccclsv__AC1B752E-D079-4BA9-AA4F-46E1F8DDC11F__3048\","
            + "\"responses\":["
            + "{"
            + "\"assessmentCreatedDate\":\"2016-11-25T11:35:54\","
            + "\"responseData\":[],"
            + "\"assessmentId\":\"943\","
            + "}"
            + "],"
            + "\"addtionalInformation\":[],"
            + "\"emailId\":\"lucky@me.com\","
            + "\"salesTeam\" :\"\","
            + "\"demographic\": {"
            + "},"
            + "\"repId\":\"AJMA-OG9OMQ\","
            + "\"assesseeId\":\"AGHA-2D0FVL\","
            + "\"assesseeType\":\"CONTACT\","
            + "\"typeOfResponse\":\"iPad\","
            + "\"userTimeZone\":\"a\""
            + "}"
            + "]";

    HttpClient httpclient = new HttpClient();
       PostMethod post = new PostMethod("http://signature");
       post.setRequestEntity(new StringRequestEntity(pay, "application/json", null));    
       httpclient.executeMethod(post);
       String jsonResponse = post.getResponseBodyAsString();
       jsonInsertRes = jsonResponse;
       System.out.println("Response in create==>"+jsonResponse);
      }
 catch (MalformedURLException e) 
  { 
      e.printStackTrace(); 
  }
  catch
  (IOException e)
  { 
  e.printStackTrace();
  }
       return jsonString.toString();        
    }

我收到这样的错误响应：无法构造org.jboss.resteasy.plugins.providers.multipart.MultipartFormDataInput的实例，问题：抽象类型只能在[Source：org.apache.catalina.connector中使用其他类型信息进行实例化。 CoyoteInputStream @ 11ff00b3; 行：1，列：1]

Answer 1

您可以尝试将JSON字符串作为字符串形式的参数发送，然后在服务器上读取JSON字符串值并将该字符串转换为Java对象（例如说Message.java的对象）。

消息msgFromJSON = new ObjectMapper（）。readValue（JSONString，Message.class）;

我尝试了几次，效果很好。