来自 Post 人的 HTTP Post 工作但不是通过浏览器

Question

我在服务器上使用 JaxRS jersey，我已经将它部署在 aws 上。对服务器的 Http post 请求与 postman 一起工作，但与 Http post apache 客户端一起工作。以下是我的 Java 休息服务

@Path("/data")
public class MyResource {


    @GET
    @Produces(MediaType.APPLICATION_JSON)
    public List<trackerdetails> getIt() {
        SessionFactory sessionfactory = new Configuration().configure().buildSessionFactory();
        Session session = sessionfactory.openSession();
        session.beginTransaction(); 
        trackerdetails user = new trackerdetails();
        List<trackerdetails> sendlist = (List<trackerdetails>) session.createQuery("from trackerdetails").list();

        session.getTransaction().commit();
        session.close();
        return sendlist;
    }

    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public trackerdetails putit(trackerdetails track) {
        track.setDate(new Date());
        SessionFactory sessionfactory = new Configuration().configure().buildSessionFactory();
        Session session = sessionfactory.openSession();
        session.beginTransaction(); 

        session.save(track);
        session.getTransaction().commit();
        session.close();
        return track;
    }

以下是我的追踪器详情class

@Entity
@XmlRootElement
public class trackerdetails {
    @Id @GeneratedValue(strategy = GenerationType.AUTO)
    private int autoid;
    private String latitude;
    private String longitude;
    private String devicename;
    private Date date;
    public trackerdetails(){

    }
    public int getAutoid() {
        return autoid;
    }
    public void setAutoid(int autoid) {
        this.autoid = autoid;
    }
    public String getLatitude() {
        return latitude;
    }
    public void setLatitude(String latitude) {
        this.latitude = latitude;
    }
    public String getLongitude() {
        return longitude;
    }
    public void setLongitude(String longitude) {
        this.longitude = longitude;
    }
    public String getDevicename() {
        return devicename;
    }
    public void setDevicename(String devicename) {
        this.devicename = devicename;
    }
    public Date getDate() {
        return date;
    }
    public void setDate(Date date) {
        this.date = date;
    }

以下是我的客户端 httppost 请求

HttpPost httpPost = new HttpPost("myurl");
List <NameValuePair> nvps = new ArrayList <NameValuePair>();
nvps.add(new BasicNameValuePair("devicename", "vip"));
nvps.add(new BasicNameValuePair("date", "hjksvn"));
nvps.add(new BasicNameValuePair("latitude", "hello"));
nvps.add(new BasicNameValuePair("longitude","hi"));
httpPost.setEntity(new UrlEncodedFormEntity(nvps));


httpPost.setHeader("Cache-Control", "no-cache");
httpPost.setHeader("Content-type", "application/json");
httpPost.setHeader("Host", "trackertest.herokuapp.com");


CloseableHttpResponse response2 = httpclient.execute(httpPost);

try {
    System.out.println(response2.getStatusLine());
    System.out.println(response2.toString());
    HttpEntity entity2 = response2.getEntity();
    // do something useful with the response body
    // and ensure it is fully consumed
      BufferedReader rd = new BufferedReader(
    new InputStreamReader(response2.getEntity().getContent()));

StringBuffer result1 = new StringBuffer();
String line = "";
while ((line = rd.readLine()) != null) {
    result1.append(line);

        System.out.println(line);
        System.out.println("");
}
System.out.println(result1);
    EntityUtils.consume(entity2);
} finally {
    response2.close();
}

以下是我的错误状态是400 Bad Request

描述客户端发送的请求在语法上不正确。

Answer 1

您的 REST API 需要 JSON 格式的请求，但您使用 NameValuePair 构建请求正文的方式不会导致 JSON 格式。

您应该通过使用一些可以将对象转换为 JSON 的库来制作有效的 JSON 请求正文，例如 Jackson 或者您可以手动构建 JSON 请求正文然后打电话给你的 API.

下面是手动构造JSON请求体的一种方式-

HttpPost httpPost = new HttpPost("myurl");

StringBuilder jsonBody = new StringBuilder();
jsonBody.append("{");
jsonBody.append("\"devicename\" : ").append("\"vip\"").append(",");
// Pass a valid date because on server side, you are using Date object for accepting it
jsonBody.append("\"date\" : ").append("\"2017-09-23\"").append(",");
jsonBody.append("\"latitude\" : ").append("\"vip\"").append(",");
jsonBody.append("\"longitude\" : ").append("\"vip\"");
jsonBody.append("}");

StringRequestEntity requestEntity = new StringRequestEntity(jsonBody.toString(),"application/json","UTF-8");


httpPost.setRequestEntity(requestEntity);

httpPost.setHeader("Cache-Control", "no-cache");
httpPost.setHeader("Content-type", "application/json");
httpPost.setHeader("Host", "trackertest.herokuapp.com");
// Rest code should remain same

来自 Post 人的 HTTP Post 工作但不是通过浏览器

HTTP Post from Postman working but not through browser

javascript

java

eclipse

jax-rs

jersey