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Java Spring Basics Modeling, Storing, and Presenting Data Using @PathVariable to Create a Dynamic Detail Page

vikas Rai
vikas Rai
9,703 Points
Posted by vikas Rai
vikas Rai
9,703 Points

Using @PathVariable to Create a Dynamic Detail Page

When I am using Path variable annotation I am getting this error There was an unexpected error (type=Internal Server Error, status=500). Exception evaluating SpringEL expression: "gif.name" (template: "gif-details" - line 13, col 12)

BELOW IS MY CODE

package com.teamtreehouse.giflib.controller;

import com.teamtreehouse.giflib.data.GifRepository; import com.teamtreehouse.giflib.model.Gif; import org.springframework.beans.factory.annotation.Autowired;

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

import java.time.LocalDate;

@Controller //Due to this annotation spring detect this class as controller class public class GifController {

@Autowired
private GifRepository gifRepository;



@RequestMapping("/gif/{nam}")
public String gifDetails(@PathVariable String nam, ModelMap modelMap){
    Gif gif= gifRepository.findByName(nam);
    modelMap.put("gif", gif);
    return "gif-details";
}

}

vikas Rai
vikas Rai
9,703 Points
vikas Rai
vikas Rai
9,703 Points

package com.teamtreehouse.giflib.model;

import java.time.LocalDate;

public class Gif {

private String name;
private LocalDate dateUploaded;
private String userName;
private Boolean favourite;

public Gif(String name, LocalDate dateUploaded, String userName, Boolean favourite) {
    this.name = name;
    this.dateUploaded = dateUploaded;
    this.userName = userName;
    this.favourite = favourite;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public LocalDate getDateUploaded() {
    return dateUploaded;
}

public void setDateUploaded(LocalDate dateUploaded) {
    this.dateUploaded = dateUploaded;
}

public String getUserName() {
    return userName;
}

public void setUserName(String userName) {
    this.userName = userName;
}

public Boolean isFavourite() {
    return favourite;
}

public void setFavourite(Boolean favourite) {
    this.favourite = favourite;
}

}

1 Answer

Daniel Phillips
Daniel Phillips
26,940 Points
Daniel Phillips
Daniel Phillips
26,940 Points

I don't see anything wrong with what you shared* You might look at your gif-details.html template.

*by the way, when sharing code, use the following format for Markdown.

Code: Wrap your code with 3 backticks (```) on the line before and after. If you specify the language after the first set of backticks.