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Java Spring Basics Modeling, Storing, and Presenting Data Capture a URI Parameter

Posted by Rajasekhar Reddy Nalla
Rajasekhar Reddy Nalla
7,894 Points

How to solve this challenge

How to solve this challenge

com/teamtreehouse/contactmgr/controller/ContactController.java 
package com.teamtreehouse.contactmgr.controller;

import com.teamtreehouse.contactmgr.model.Contact;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.ui.ModelMap;

@Controller
public class ContactController {
    @RequestMapping("/")
    public String home() {
      return "index";
    }

    @RequestMapping("/contact")
    public String contact(ModelMap modelMap) {
      Contact c = new Contact();
      modelMap.put("contact",c);
      return "contact_detail";
    }
}
com/teamtreehouse/contactmgr/model/Contact.java 
package com.teamtreehouse.contactmgr.model;

public class Contact {
  private int id;
  private String firstName;
  private String lastName;
  private String email;

  public Contact() {}

  public Contact(int id, String firstName, String lastName, String email) {
    this.id = id;
    this.firstName = firstName;
    this.lastName = lastName;
    this.email = email;
  }

  public int getId() {
    return id;  
  }

  public String getFirstName() {
    return firstName;  
  }

  public String getLastName() {
    return lastName;  
  }

  public String getEmail() {
    return email;  
  }

  public void setId(int id) {
    this.id = id;  
  }

  public void setFirstName(String firstName) {
    this.firstName = firstName;  
  }

  public void setLastName(String lastName) {
    this.lastName = lastName;  
  }

  public void setEmail(String email) {
    this.email = email;
  }
}
Xayaseth Boudsady
Xayaseth Boudsady
21,951 Points

See Comments

package com.teamtreehouse.contactmgr.controller;

import com.teamtreehouse.contactmgr.model.Contact;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.ui.ModelMap;

@Controller
public class ContactController {
    @RequestMapping("/")
    public String home() {
      return "index";
    }

    // Update our path
    @RequestMapping("/contact/{id}")
   // Add the path
    public String contact(@PathVariable int id, ModelMap modelMap) {
      Contact c = new Contact();
      // Use setter method from our Contact.java class 
      c.setId(id);
      modelMap.put("contact",c);
      return "contact_detail";
    }
}

3 Answers

xinhuang79
PLUS
xinhuang79
Courses Plus Student 918 Points
xinhuang79
xinhuang79
Courses Plus Student 918 Points

change your contact to

@RequestMapping("/contact/{id}") //added the id parameter public String contact(@PathVariable int id, ModelMap modelMap) { //added the @PathVariable... Contact c = new Contact(); c.setId(id) //added assign id modelMap.put("contact",c); return "contact_detail"; }

Dean Vollebregt
Dean Vollebregt
24,583 Points

Thanks xinhuang79, that worked great

Awais Jamil
Awais Jamil
7,539 Points
Awais Jamil
Awais Jamil
7,539 Points

package com.teamtreehouse.contactmgr.controller;

import com.teamtreehouse.contactmgr.model.Contact;

import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.ui.ModelMap;

@Controller public class ContactController {

@RequestMapping("/")
public String home() {
  return "index";
}

@RequestMapping("/contact/{id}")
public String contact(@PathVariable int id, ModelMap modelMap) {
  Contact c = new Contact();
  c.setId(id);
  modelMap.put("contact",c);
  return "contact_detail";
}

}

Shane Robinson
Shane Robinson
7,324 Points
Shane Robinson
Shane Robinson
7,324 Points

Could you tell us specifically what part you are stuck on? That would help us know how to guide you.

Rajasekhar Reddy Nalla
Rajasekhar Reddy Nalla
7,894 Points

The question for the above challenge is: In ContactController.java, update the contact method so that it captures an int id in the URI, such as "/contact/8" or "/contact/723". Then, use this captured value as the id for a new Contact object you construct and add to the ModelMap. Don't worry about the firstName, lastName, or email.

Please give me a solution for this.