Question

我正在尝试使用JSON请求体调用服务的POST操作并读取JSON响应。

我有以下方法将JSON请求构建为JSONObject对象。

public class CashFundTransfer {
public JSONObject buildRequest(){
    JSONObject request = new JSONObject();
    request.put("dateTime", getDateTimeObj());
    request.put("businessDate", getBusinessDateObj());
    request.put("description", getDescriptionObj());
    request.put("transferAccount", buildTransferAccount());
    request.put("amount", buildAmount());
    request.put("businessUnit", buildBusinessUnit());
    request.put("status", buildStatus());
    request.put("recipient", buildRecipient());
    request.put("cashFundTransferee", buildCashFundTransferee());
    request.put("enteringAssoc", buildEnteringAssoc());
    request.put("approvingAssoc", buildApprovingAssoc());
    request.put("accountingDivision", buildAccountingDivision());
    return request;
   }
}

我调用的所有方法都返回一个JSONObject的对象，该对象是父节点的子节点。

在我的测试课中，我有以下代码。当我执行代码时，服务正在接收StringEntity对象的哈希码，而不是内容。

public class CFTTest {
   CashFundTransfer cft = new CashFundTransfer();
   JSONObject request = cft.buildRequest();
   System.out.println("request: "+request);

   public void callService() throws IOException{
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost postRequest = new HttpPost(url);
        try {
          String inputString = request.toString();
          System.out.println("inputString 1: "+inputString);
          StringEntity input = new StringEntity(inputString);
          System.out.println("input: "+input);
          } catch (UnsupportedEncodingException e) {
           e.printStackTrace();
          }
          input.setContentType("application/json");
          postRequest.setEntity(input);
          try {
               response = httpClient.execute(postRequest);
          } catch (ClientProtocolException e) {
                e.printStackTrace();
          } catch (IOException e) {
                e.printStackTrace();
          }
          System.out.println("response: "+response);
      }
}

执行此代码时，下面是控制台。

request: {"dateTime":"2016-12-04","businessDate":"2016-12-04","amount":      {"Value":200.0,"currency":{"code":"USD","description":"dollar"}},"businessUnit":{"number":5525,"name":"WMT","location":{"countryCode":"US"},"id":"0"},"recipient":{"name":{"fullName":"Samuel"}},"description":"Store Use 1","transferAccount":{"id":992},"accountingDivision":{"number":"1"},"enteringAssoc":{"id":"0"},"cashFundTransferee":{"id":"0","type":"OPERATOR"},"approvingAssoc":{"id":"0"},"status":{"code":"1"}}
inputString 1: {"dateTime":"2016-12-04","businessDate":"2016-12-04","amount":{"Value":200.0,"currency":{"code":"USD","description":"dollar"}},"businessUnit":{"number":5525,"name":"WMT","location":{"countryCode":"US"},"id":"0"},"recipient":{"name":{"fullName":"Samuel"}},"description":"Store Use 1","transferAccount":{"id":992},"accountingDivision":{"number":"1"},"enteringAssoc":{"id":"0"},"cashFundTransferee":{"id":"0","type":"OPERATOR"},"approvingAssoc":{"id":"0"},"status":{"code":"1"}}
input: org.apache.http.entity.StringEntity@737996a0
14:06:22.238 [main] DEBUG o.a.h.i.c.BasicClientConnectionManager - Get    connection for route {s}-   >https://nodejs.dev.cashfundtransfer.bofbua.prod.cloud.wal-mart.com
14:06:22.506 [main] DEBUG o.a.h.i.c.DefaultClientConnectionOperator - Connecting to nodejs.dev.cashfundtransfer.bofbua.prod.cloud.wal-mart.com:443
14:06:22.609 [main] DEBUG o.a.h.c.protocol.RequestAddCookies - CookieSpec selected: best-match
14:06:22.630 [main] DEBUG o.a.h.c.protocol.RequestAuthCache - Auth cache   not set in the context
14:06:22.630 [main] DEBUG o.a.h.c.p.RequestTargetAuthentication - Target auth state: UNCHALLENGED
14:06:22.631 [main] DEBUG o.a.h.c.p.RequestProxyAuthentication - Proxy auth state: UNCHALLENGED
14:06:22.631 [main] DEBUG o.a.h.impl.client.DefaultHttpClient - Attempt 1 to execute request
14:06:22.632 [main] DEBUG o.a.h.i.conn.DefaultClientConnection - Sending request: POST /api/cashfundtransfer/v1 HTTP/1.1
14:06:22.632 [main] DEBUG org.apache.http.wire -  >> "POST /api/cashfundtransfer/v1 HTTP/1.1[\r][\n]"
14:06:22.634 [main] DEBUG org.apache.http.wire -  >> "Content-Length: 475[\r][\n]"
14:06:22.634 [main] DEBUG org.apache.http.wire -  >> "Content-Type: text/plain; charset=ISO-8859-1[\r][\n]"
14:06:22.634 [main] DEBUG org.apache.http.wire -  >> "Host: nodejs.dev.cashfundtransfer.bofbua.prod.cloud.wal-mart.com[\r][\n]"
14:06:22.634 [main] DEBUG org.apache.http.wire -  >> "Connection: Keep-Alive[\r][\n]"
14:06:22.635 [main] DEBUG org.apache.http.wire -  >> "User-Agent: Apache-HttpClient/4.3.5 (java 1.5)[\r][\n]"
14:06:22.635 [main] DEBUG org.apache.http.wire -  >> "[\r][\n]"
14:06:22.635 [main] DEBUG org.apache.http.headers - >> POST /api/cashfundtransfer/v1 HTTP/1.1
14:06:22.635 [main] DEBUG org.apache.http.headers - >> Content-Length: 475
14:06:22.635 [main] DEBUG org.apache.http.headers - >> Content-Type: text/plain; charset=ISO-8859-1
14:06:22.635 [main] DEBUG org.apache.http.headers - >> Host: nodejs.dev.cashfundtransfer.bofbua.prod.cloud.wal-mart.com
14:06:22.635 [main] DEBUG org.apache.http.headers - >> Connection: Keep-Alive
14:06:22.635 [main] DEBUG org.apache.http.headers - >> User-Agent: Apache-HttpClient/4.3.5 (java 1.5)
14:06:22.636 [main] DEBUG org.apache.http.wire -  >> "{"dateTime":"2016-12-04","businessDate":"2016-12-04","amount":{"Value":200.0,"currency":{"code":"USD","description":"dollar"}},"businessUnit":{"number":5525,"name":"WMT","location":{"countryCode":"US"},"id":"0"},"recipient":{"name":{"fullName":"Samuel"}},"description":"Store Use 1","transferAccount":{"id":992},"accountingDivision":{"number":"1"},"enteringAssoc":{"id":"0"},"cashFundTransferee":{"id":"0","type":"OPERATOR"},"approvingAssoc":{"id":"0"},"status":{"code":"1"}}"
14:06:22.653 [main] DEBUG org.apache.http.wire -  << "HTTP/1.1 400 Bad Request[\r][\n]"
14:06:22.658 [main] DEBUG org.apache.http.wire -  << "content-type: application/json; charset=utf-8[\r][\n]"
14:06:22.659 [main] DEBUG org.apache.http.wire -  << "strict-transport-security: max-age=15768000[\r][\n]"
14:06:22.659 [main] DEBUG org.apache.http.wire -  << "x-frame-options: DENY[\r][\n]"
14:06:22.659 [main] DEBUG org.apache.http.wire -  << "x-xss-protection: 1; mode=block[\r][\n]"
14:06:22.659 [main] DEBUG org.apache.http.wire -  << "x-download-options: noopen[\r][\n]"
14:06:22.659 [main] DEBUG org.apache.http.wire -  << "x-content-type-options: nosniff[\r][\n]"
14:06:22.659 [main] DEBUG org.apache.http.wire -  << "cache-control: no-cache[\r][\n]"
14:06:22.660 [main] DEBUG org.apache.http.wire -  << "content-length: 197[\r][\n]"
14:06:22.660 [main] DEBUG org.apache.http.wire -  << "Date: Wed, 21 Dec 2016 20:06:23 GMT[\r][\n]"
14:06:22.660 [main] DEBUG org.apache.http.wire -  << "Connection: keep-alive[\r][\n]"
14:06:22.660 [main] DEBUG org.apache.http.wire -  << "[\r][\n]"
14:06:22.661 [main] DEBUG o.a.h.i.conn.DefaultClientConnection - Receiving response: HTTP/1.1 400 Bad Request
14:06:22.661 [main] DEBUG org.apache.http.headers - << HTTP/1.1 400 Bad Request
14:06:22.661 [main] DEBUG org.apache.http.headers - << content-type: application/json; charset=utf-8
14:06:22.661 [main] DEBUG org.apache.http.headers - << strict-transport-security: max-age=15768000
14:06:22.661 [main] DEBUG org.apache.http.headers - << x-frame-options: DENY
14:06:22.661 [main] DEBUG org.apache.http.headers - << x-xss-protection: 1; mode=block
14:06:22.661 [main] DEBUG org.apache.http.headers - << x-download-options: noopen
14:06:22.661 [main] DEBUG org.apache.http.headers - << x-content-type-options: nosniff
14:06:22.661 [main] DEBUG org.apache.http.headers - << cache-control: no-cache
14:06:22.661 [main] DEBUG org.apache.http.headers - << content-length: 197
14:06:22.662 [main] DEBUG org.apache.http.headers - << Date: Wed, 21 Dec 2016 20:06:23 GMT
14:06:22.662 [main] DEBUG org.apache.http.headers - << Connection: keep-alive
14:06:22.667 [main] DEBUG o.a.h.impl.client.DefaultHttpClient - Connection can be kept alive indefinitely
response: HTTP/1.1 400 Bad Request [content-type: application/json; charset=utf-8, strict-transport-security: max-age=15768000, x-frame-options: DENY, x-xss-protection: 1; mode=block, x-download-options: noopen, x-content-type-options: nosniff, cache-control: no-cache, content-length: 197, Date: Wed, 21 Dec 2016 20:06:23 GMT, Connection: keep-alive]

无法识别我在哪里出错。

Answer 1

我假设JSONObject来自JSON.simple第三方（您可能应该在下次问题中添加此信息，因为java还没有任何标准方法来处理json）。

您需要调用JSONObject.toJSONString()来检索json字符串，如下所示：

String inputString = request.toJSONString();
System.out.printf("inputString 1: %s\n", inputString);
StringEntity input = new StringEntity(inputString);

此外，在处理Web服务时，内容类型应与请求的内容相匹配。如果将StringEntity构造函数与单个参数一起使用，则apache http客户端将采用text/plain内容类型，这是不正确的。你应该使用：

StringEntity input = new StringEntity(inputString, ContentType.APPLICATION_JSON);

Answer 2

由于我的请求对象中存在拼写错误而失败。它的工作正常。

如何使用java

2 个答案: