Java 我需要一个关于如何使用RESTful from entity类创建的函数create的示例

我需要一个关于如何使用RESTful from entity类创建的函数create的示例

我的实体类别（国家）：

一揽子实体

import java.io.Serializable;

import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import javax.xml.bind.annotation.XmlRootElement;
import org.hibernate.SessionFactory;
import org.hibernate.Session;
import org.hibernate.cfg.Configuration;


/**
 *
 * @author oracle
 */
@Entity
@Table(name = "COUNTRIES")
@XmlRootElement
@NamedQueries({
    @NamedQuery(name = "Countries.findAll", query = "SELECT c FROM Countries c"),
    @NamedQuery(name = "Countries.findByCountryId", query = "SELECT c FROM Countries c WHERE c.countryId = :countryId"),
    @NamedQuery(name = "Countries.findByCountryName", query = "SELECT c FROM Countries c WHERE c.countryName = :countryName")})
public class Countries implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 2)
    @Column(name = "COUNTRY_ID")
    private String countryId;
    @Size(max = 40)
    @Column(name = "COUNTRY_NAME")
    private String countryName;

  static SessionFactory sessionFactory ;


    public Countries() {
    }

    public Countries(String countryId) {
        this.countryId = countryId;
    }

    public String getCountryId() {
        return countryId;
    }

    public void setCountryId(String countryId) {
        this.countryId = countryId;
    }

    public String getCountryName() {
        return countryName;
    }

    public void setCountryName(String countryName) {
        this.countryName = countryName;
    }

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (countryId != null ? countryId.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof Countries)) {
            return false;
        }
        Countries other = (Countries) object;
        if ((this.countryId == null && other.countryId != null) || (this.countryId != null && !this.countryId.equals(other.countryId))) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "entities.Countries[ countryId=" + countryId + " ]";
    }

My Countries Facaderest包含创建函数：

 @POST
    @Override
    @Consumes({"application/xml", "application/json"})
    public void create(Countries entity) {
        super.create(entity);

    }

客户端代码来自android应用程序：

protected String doInBackground(Void... params) {
HttpClient httpClient = new DefaultHttpClient();
HttpContext localContext = new BasicHttpContext();



    HttpPost httpPost = new HttpPost("http://192.168.0.104:8080/wsDatabase/webresources/entities.countries/create");
String text = null;
try {
HttpResponse response = httpClient.execute(httpPost, localContext);


HttpEntity entity = response.getEntity();


text = getASCIIContentFromEntity(entity);


} catch (Exception e) {
return e.getLocalizedMessage();
}

return text;
}

---

顺便说一句：客户端代码正在其他web服务上运行和测试，但我需要让它在“创建web服务”上运行。

尝试使用HttpPost更改您的HttpGet，因为您的rest服务回答了POST请求。

我可以知道为什么我得到了“-1”吗？我想-1是因为这个问题归结为一个问题“请为我写一些代码”，一个更好的问题可能会被表述为“这是我尝试使用此代码中的RESTful函数。我原以为它能做X，但它却做了Y。请帮我理解为什么。“所以我们应该在写任何问题之前先上英语课。我们有很多非英语母语人士提出的问题；拙劣的语法很快就被清理干净了。不赞成的是要求其他用户编写代码；这不是StackOverflow的目的。一个好的问题试图解决问题，然后问一些具体的问题，关于在尝试中可能出现的错误。我是sry JFPicard我复制了这个与HttpGet一起工作的代码。。。我现在要解决我的问题。。。