在HttpClient-Java中发送POST请求时，收到400个错误请求

Question

package com.apex.customer.service;

public class CustServicePostTest {

    public static void main(String[] args) throws ClientProtocolException, IOException {

        String url = "http://www.thomas-bayer.com/sqlrest/CUSTOMER/102";
        //create the http client
        HttpClient client = HttpClientBuilder.create().build();
        //create the post message
        HttpPost post = new HttpPost(url);

        List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
        urlParameters.add(new BasicNameValuePair("ID", "102"));
        urlParameters.add(new BasicNameValuePair("FIRSTNAME", "Apex"));
        urlParameters.add(new BasicNameValuePair("LASTNAME", "Consultancy"));
        urlParameters.add(new BasicNameValuePair("STREET", "Shell Blvd"));
        urlParameters.add(new BasicNameValuePair("CITY", "Fremont"));

        post.setEntity(new UrlEncodedFormEntity(urlParameters));

        HttpResponse response = client.execute(post);

        System.out.println(response.getStatusLine().getStatusCode());
        System.out.println("Parameters : " + urlParameters);
        System.out.println("Response Code: " + response);
        System.out.println(response.getStatusLine().getReasonPhrase());

    }

}

我正在寻找200 OK请求。

Answer 1

这里的问题很少出错：

• 首先与输入格式有关。您使用的代码试图映射键和值，但正如我在本指南中看到的，它希望以纯文本的XML格式作为输入。
• 第二个错误是试图在现有ID上发布。在本例中，要创建资源，应该使用http://www.thomas-bayer.com/sqlrest/customer/

因此，在本例中，为了使其发挥作用，请尝试如下所示：

        String url = "http://www.thomas-bayer.com/sqlrest/CUSTOMER/";
        HttpClient client = HttpClientBuilder.create().build();
        HttpPost post = new HttpPost(url);

        String xml = "<resource>";
        xml += "<ID>102</ID>";
        xml += "<FIRSTNAME>Apex</FIRSTNAME>";
        xml += "<LASTNAME>Consultancy</LASTNAME>";
        xml += "<STREET>Shell Blvd</STREET>";
        xml += "<CITY>Fremont</CITY>";
        xml += "</resource>";

        post.setEntity(new StringEntity(xml));
        HttpResponse response = client.execute(post);

        System.out.println(response.getStatusLine().getStatusCode());
        System.out.println("Response Code: " + response);
        System.out.println(response.getStatusLine().getReasonPhrase());

curl -X POST  http://www.thomas-bayer.com/sqlrest/PRODUCT/ -d '<resource><ID>103</ID><NAME>X</NAME><PRICE>2.2</PRICE></resource>'