Java 使用Hibernate和Spring MVC的JSON输出不符合预期
我有一个RestService Spring MVC。我正在使用hibernate并在JBOSS上运行项目。我的JSON输出的格式应该如下所示Java 使用Hibernate和Spring MVC的JSON输出不符合预期,java,json,hibernate,spring-mvc,Java,Json,Hibernate,Spring Mvc,我有一个RestService Spring MVC。我正在使用hibernate并在JBOSS上运行项目。我的JSON输出的格式应该如下所示 { "iteration": "2017 Sprint 1", "project": "MDM - Core & Integration", "isd": "23/12/2016", "ied": "16/01/2017",.... 但我得到的只是结
{
"iteration": "2017 Sprint 1",
"project": "MDM - Core & Integration",
"isd": "23/12/2016",
"ied": "16/01/2017",....
但我得到的只是结果
"2017 Sprint 1",
"MDM - Core & Integration",...
我的代码如下:
IterationInfo.java
package pojoclasses;
import java.util.Date;
public class IterationInfo
{
private int iteration_id;
private int project_id;
private String iteration_name;
private Date isd;
private Date ied;
// getter and setter section
}
PageInfo.java
package pojoclasses;
import java.util.Date;
public class PageInfo
{
private int comment_id;
private String comment_text;
private String comment_type;
private int user_id;
private int retrospective_id;
private Date creation_date;
private Date modification_date;
//getters/setters..
projectInfo.java
package pojoclasses;
public class ProjectInfo
{
private int project_id;
private String project_name;
//getters/setters
retrospectVeInfo.java
package pojoclasses;
import java.util.Date;
public class RetrospectiveInfo
{
private int retrospective_id;
private Date retrospective_date;
private int project_id;
private int iteration_id;
private int user_id;
//getters/setters
UserInfo.java
package pojoclasses;
public class UserInfo
{
private int user_id;
private String user_name;
private String email_id;
private int rally_objectid;
//getters/setters
MainControllerClass.java
package packagecontroller;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import binderclass.Details1;
@Controller
@RequestMapping("/json/retrospective")
public class MainControllerClass
{
@RequestMapping(value="{userid}", method = RequestMethod.GET,produces=MediaType.APPLICATION_JSON_VALUE)
public @ResponseBody List<Details1> getInfoInJSON(@PathVariable int userid)
{
Configuration con = new Configuration();
con.configure("hibernate.cfg.xml");
SessionFactory SF = con.buildSessionFactory();
Session session= SF.openSession();
Query queryinfo=session.createQuery("select itr.iteration_name,prj.project_name,itr.isd,itr.ied from RetrospectiveInfo retro,IterationInfo itr,ProjectInfo prj where retro.retrospective_id ="+userid+" and retro.project_id = prj.project_id and retro.iteration_id = itr.iteration_id");
List<Details1> pagedetails=queryinfo.list();
//Query to be fired..
session.close();
SF.close();
return pagedetails;
}
我创建details1.java只是为了从列表中多个POJO的对象中获取信息。请帮助
`下面的代码只会给出您看到的结果
Query queryinfo=session.createQuery("select itr.iteration_name,prj.project_name,itr.isd,itr.ied from RetrospectiveInfo retro,IterationInfo itr,ProjectInfo prj where retro.retrospective_id ="+userid+" and retro.project_id = prj.project_id and retro.iteration_id = itr.iteration_id");
List<Details1> pagedetails=queryinfo.list();
queryqueryinfo=session.createQuery(“从RetrospectInfo retro、IterationInfo itr、ProjectInfo prj中选择itr.iteration\u名称、prj.project\u名称、itr.isd、itr.ied,其中retro.Retroduction\u id=“+userid+”和retro.project\u id=prj.project\u id和retro.iteration\u id=itr.iteration\u id”);
List pagedetails=queryinfo.List();
您可以在多个级别改进该代码
1> 使用JPA实体
2> 使用CriteriaAPI而不是触发查询
3> 只需将该JPA实体传递到控制器中,而不是将其映射到另一个POJO
4> 使用不同的层访问数据库
下面的链接可能很有用
@ResponseBody注释不注释列表。它注释方法,就像RequestMapping使用方法注释一样
@RequestMapping(value="{userid}", method = RequestMethod.GET,produces=MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public List<Details1> getInfoInJSON(@PathVariable int userid)
{
// your code
}
@RequestMapping(value=“{userid}”,method=RequestMethod.GET,products=MediaType.APPLICATION\u JSON\u value)
@应答器
公共列表getInfoInJSON(@PathVariable int userid)
{
//你的代码
}
类路径中是否有Jackson,如果使用maven,是否有Jackson作为依赖项?json中缺少的字段在Details1类中是否有getter?@EssexBoy..我将Jackson添加为dependency@Massimo是的,他们有getter/setters@EssexBoy..anything您建议??首先在调试模式下检查pagedetails的值
@RequestMapping(value="{userid}", method = RequestMethod.GET,produces=MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public List<Details1> getInfoInJSON(@PathVariable int userid)
{
// your code
}