trouble in getting drop down values in spring mvc

Question

I am getting trouble in getting the value of drop down ,I have student entity and section entity there is a relation ship between them and in jsp its coming like com.chan.Eschool.student.model.Section@26552d instead of this in jsp i need to get the specific bean property name like sectionName

@Entity
@Table(name="section")

public class Section  implements Serializable  {

            private static final long serialVersionUID = 1L;
            private Integer id;
            private String sectionName;
            private School school;
            private List studentList;

            public static long getSerialversionuid() {
                return serialVersionUID;
            }

            @Id
            @GeneratedValue(strategy=GenerationType.IDENTITY)
            public Integer getId()  {
                      return id;
            }
            public void setId(Integer id) {
                      this.id = id;
            }

            public String getSectionName() {
                      return sectionName;
            }
            public void setSectionName(String sectionName) {
                      this.sectionName = sectionName;
            }

            @ManyToOne(fetch=FetchType.EAGER)
            @JoinColumn(name="school_id")
            public School getSchool() {
                      return school;
            }
            public void setSchool(School school) {
                      this.school = school;
            }

            @OneToMany( mappedBy = "section" )
            public List getStudentList() {
                return studentList;
            }
            public void setStudentList(List studentList) {
                this.studentList = studentList;
            }

}

Student Model Class

@Entity
@Table(name="student")
public class Student {

    private long id;
    private String student_name;
    private String roll_no;
    private String standard;
    private School school;
    private Address address;
    private StudentPhysicalInfo physicalInfo;
    private Section section;


    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    public long getId()  {
              return id;
    }
    public void setId(long id)  {
              this.id = id;
    }

    public String getStudent_name()  {
              return student_name;
    }
    public void setStudent_name(String student_name)  {
              this.student_name = student_name;
    }

    public String getRoll_no()  {
             return roll_no;
    }
    public void setRoll_no(String roll_no)  {
              this.roll_no = roll_no;
    }

    public String getStandard()  {
              return standard;
    }
    public void setStandard(String standard)  {
              this.standard = standard;
    }

    @ManyToOne
    @JoinColumn(name="school_id")
    public School getSchool()  {
              return school;
    }
    public void setSchool(School school)  {
              this.school = school;
    }

    @Embedded
    public Address getAddress()  {
              return address;
    }
    public void setAddress(Address address)  {
              this.address = address;
    }

    @OneToOne(mappedBy="student",cascade=CascadeType.ALL)
    public StudentPhysicalInfo getPhysicalInfo()  {
              return physicalInfo;
    }
    public void setPhysicalInfo(StudentPhysicalInfo physicalInfo)  {
              this.physicalInfo = physicalInfo;
    }

    @ManyToOne
    @JoinColumn(name =" section_Id")
    public Section getSection() {
        return section;
    }
    public void setSection(Section section) {
        this.section = section;
    }

}

My Dao implementation is like this

@Override
            public List getSections()  {

                      Session session  =  this.sessionFactory.getCurrentSession();
                      Query query = session.createQuery( "from Section s" );
                      List sectionList = query.list();
                      return sectionList;
            }

JSP like.


                         
                        
                            
                                
                                    
                                
                                
                                    
                                
                            
                            
                                
                                    
                                
                                
                                    
                                
                            

                            
                                
                                    
                                
                                
                                    
                                
                            


                            Address Details

Controller is like

@RequestMapping(value="/student/register",method=RequestMethod.GET)
         public String registerStudent(Model model,@ModelAttribute Student student)  {

                List  sectionsList = (List) sectionService.getSections();
                for(Section section : sectionsList) {
                    System.out.println("Sections are "+ " "+section.getSectionName());
                }
                model.addAttribute("sectionsList",sectionsList);
                  return "student/registration";
         }

My final touch up to this question is how to get the dropdown values of specified bean property name (here i want to get the bean property name like sectionName) I am getting the drop down value like com.chan.Eschool.student.model.Section@26552d

please guide me where I am wrong

thoitbk · Accepted Answer

Create a Map in your controller

     @RequestMapping(value="/student/register",method=RequestMethod.GET)
     public String registerStudent(Model model,@ModelAttribute Student student)  {

            List  sectionsList = (List) sectionService.getSections();
            Map sections = new LinkedHashMap();
            for(Section section : sectionsList) {
                sections.put(section.getId(), section.getSectionName());
            }
            model.addAttribute("sectionsList",sectionsList);
            model.addAttribute("sections",sections);
              return "student/registration";
     }

And simply bind it to jsp by calling

trouble in getting drop down values in spring mvc

Answers (1)

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