I can't show an html page - spring

I have to develop a project for college using Spring. I started watching some tutorials and I can't show an html page. I do the same but it returns only one string.
I'm using visual studio code.
Controller:
package com.example.springteste.controllers;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
#RestController
public class ProductController {
#GetMapping("/formulario")
public String formulario()
{
return "form";
}
}
My view is just inside templates
View:
<!DOCTYPE html>
<html lang="pt-br">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<main>
<section id="sectionProduct">
<div>
<div id="sectionProduct-title">
<h1>
Título
</h1>
</div>
<div id="sectionProduct-form">
<form action="">
<div class="sectionProduct-form-inputLabel">
<input type="text" id="title" name="title">
<label for="title">
Título
</label>
</div>
</form>
</div>
</div>
</section>
</main>
</body>
</html>
I believe something is missing. I am a beginner in java and spring

If you want to return a view name from the controller method handler - you have to use #Controller annotation. Also make sure you put your views into the correct directory, according to your view resolver configuration.
About #RestController - as the name suggests, it shall be used in case of REST style controllers i.e. handler methods shall return the JSON/XML response directly to the client rather using view resolvers.
In your case the handler method will return "form" to the client.

Related

How to pass individual variables to view in thymeleaf?

Hi I'm building a skeleton of a car renting webapp and I'm trying to create a view that shows some details like location name, car name etc.
View code- car-list.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>Vehicle List</title>
<h2 th:text="${location1}">Locations</h2>
<table class="table table-stripped">
<thead>
<td th:text="${vehicle1Name}">Vehicle Name</td>
</tr>
</thead>
<td th:text="${vehicle2Name}">Vehicle Name</td>
</tr>
</table>
</head>
<body>
</body>
</html>
And heres my controller
package com.project.CS4125.controller;
import com.project.CS4125.model.*;
import com.project.CS4125.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.ArrayList;
import java.util.List;
#Controller
#RequestMapping("/car-list")
public class VehicleController {
#GetMapping("/car-list")
public String carList(Model model){
Vehicle VWGolf = new BasicCar();
Vehicle Duster = new SUVDecorator(new BasicCar());
Location limerick= new Location("Limerick");
model.addAttribute("location1", limerick.getLocationName());
model.addAttribute("vehicle1Name", "Volkswagen Golf");
model.addAttribute("vehicle2Name", "Dacia Duster");
return "index";
}
}
My problem is the view comes up completely empty, any help appreciated.
EDIT
Before this page I have a register and login page
index.html (register page
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>Register</title>
</head>
<body>
<form action="#" th:action="#{/register}" th:object="${user}"
method="post">
<p>User Name <input type="text" name="name"></p>
<p>Password <input type="password" name="password"></p>
<button type="submit">Register</button>
</form>
<button>Login Here</button>
</body>
</html>
login.html
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>Login</title>
</head>
<body>
<form action="#" th:action="#{/login}" th:object="${user}"
method="post">
<p>User Name <input type="text" name="name"></p>
<p>Password <input type="password" name="password"></p>
<button type="submit">Login</button>
</form>
<button>Register Here</button>
</body>
</html>
And heres the controller for these
#Controller
#RequestMapping("/")
public class IndexController {
#Autowired
private UserService userService;
#Autowired
private CustomerFactory userFactory;
#PostMapping("/register")
public String registerUser(#ModelAttribute User user){
User u = userFactory.createUser(user.getName(), user.getPassword());
userService.saveUser(u);
return "login";
}
#GetMapping("/login")
public String login(){
return "login";
}
#PostMapping("/login")
public String loginUser(#ModelAttribute User user){
User authenticatedUser = userService.authenticate(user.getName(), user.getPassword());
System.out.println(authenticatedUser.toString());
return "car-list";
}
}
Even after adding the code from the answer below I'm still getting an empty page, after submitting the login form moving to the car list page its still empty.
I also noticed in the answer the URL is http://localhost:8080/car-list but when I try it its http://localhost:8080/login
I've just tested your code and you have two problems.
The first one is at your:
#Controller
#RequestMapping("/car-list")
public class VehicleController {
#GetMapping("/car-list")
In this GetMapping you're saying that you want to access your template at /car-list/car-list.
The seccond one is with your template name. You're returning "index" when you should return "car-list", at this you're returning the template name.
So, editting your code like this:
#Controller
#RequestMapping("/car-list")
public class VehicleController {
#GetMapping
public String carList(Model model){
model.addAttribute("location1", "Answer");
model.addAttribute("vehicle1Name", "Volkswagen Golf");
model.addAttribute("vehicle2Name", "Dacia Duster");
return "car-list";
}
}
I got:
Template working and returning

can we call a ftl macro from javascript function

<html lang="en">
<head>
<meta charset="UTF-8">
<title> Java, Spring Boot, FreeMarker</title>
<link href="/css/main.css" rel="stylesheet">
</head>
<script>
function myFunction() {
<#test/>
}
</script>
<body>
<h2>Java, Spring Boot, FreeMarker</h2>
<form action="/search" method="post">
Search : <input type="text" name="firstName" onkeyup="myFunction()" id = "fname">
<input type="submit" value="Submit">
</form>
<div style="background-color:lightblue">
<#macro test>
<#list empList as emp>
<div id="emp-data">
<ul>
<li>${emp}</li>
</ul>
</#list>
</div>
</#macro>
<script src="/js/main.js"></script>
</div>
</body>
When I run this code I am getting some errors on the browser console:
(index):60 Uncaught ReferenceError: myFunction is not defined at HTMLInputElement.onkeyup ((index):60) onkeyup # (index):60 – PCS 1 hour ago
Is it possible in FreeMarker to do something like that?
In a sense you can... but it doesn't do what you apparently believe it does. First all FreeMarker instructions, like <#test/>, are resolved on the server, then later the resulting output runs in the browser. So as far as the browser sees, function myFunction() { ... } contains HTML div-s directly in inside the { ... }, which is invalid JavaScript.

Thymleaf - how to call model Attribute on html document

Im trying to render a webapge and use the thymleaf attribute "url" added with model.addAttribute but the Attribute is not beeing displayed on the html document.
My document.html file path is here:
/templates/webpage/document.html
#RequestMapping(value = "/webpage/document")
public String document(HttpServletRequest req, Model model) {
model.addAttribute("dialogurl", url);
return "/webpage/document";
}
Here is the html document
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org" th:include="wrapperdialog :: page">
<head>
<title></title>
</head>
<body>
<div th:fragment="content">
<div class="container dialogpage">
<div class="row">
<div class="col-md-12">
<div id="typeform" th:attr="data-url=*{dialogurl}">
</div>
</div>
</div>
</div>
</div>
Please use this expression to bind dialog url: #{${dialogurl}}
<div id="typeform" th:attr="data-url=#{${dialogurl}}">
# prefix is used to specify a link and $ prefix is used to bind your model value.
Use $ to bind data.
<div id="typeform" th:attr="data-url=${dialogurl}">

Thymeleaf + spring dynamic replace

Is it possible to create a dynamic replace in Thymeleaf?
I have the following controller:
#Controller
public class LoginController {
#RequestMapping("/login")
public String getLogin(Model model){
model.addAttribute("template","login");
return "index";
}
}
And the following view:
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org" >
<head></head>
<body>
<div th:replace="fragments/${template} :: ${template}"></div>
</body>
</html>
And i'm getting the following error:
Error resolving template "fragments/${template}", template might not exist or might not be accessible by any of the configured Template Resolvers
UPDATE
I tried to preprocess my variables like this:
<div th:replace="fragments/${__#{${template}}__} :: ${__#{${template}}__}"></div>
How ever now ${template} is getting replaced with login i have the following error now:
Exception evaluating SpringEL expression: "??login_en_US??"
Although Joe Essey's solution is working as well i solved with following code:
<div th:replace="#{'fragments/' + ${template}} :: ${template}"></div>
I believe the appropriate method to manage this behavior in thymeleaf is to use layout:fragment tags. Please correct me if I'm wrong. Here is a simple example of my layout page, and the login page which is 'dynamically' loaded:
layout.html
<html xmlns:layout="http://www.w3.org/1999/xhtml" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
<title layout:title-pattern="$DECORATOR_TITLE - $CONTENT_TITLE">Layout</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=Edge"/>
</head>
<body>
<div>
<div class="app-container">
<div th:fragment="content">
</div>
</div>
</div>
<div th:fragment="script"></div>
</body>
</html>
Then, when login gets loaded, it replaces the th:fragment div with the associated div in the html view which matches the string returned by the controller method, in this case login.html:
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
xmlns:layout="http://www.w3.org/1999/xhtml"
layout:decorator="layout">
<head>
<title>Login</title>
</head>
<body>
<div th:fragment="content">
<form th:action="#{/login}" method="post">
<div><label> User Name : <input type="text" name="username"/> </label></div>
<div><label> Password: <input type="password" name="password"/> </label></div>
<div><input type="submit" value="Sign In"/></div>
</form>
</div>
</body>
</html>
Now, if you want to load another fragment conditionally, the approach I take is to add replace tags with th:if cases. Here's an example of a Form that displays different questions based on an attribute of the current user:
<div th:if="${foo.type)} == 'type_1'">
<div th:replace="fragments/custom-questions :: type-1-checkboxes"></div>
</div>
<div th:if="${foo.type} == 'type_2'">
<div th:replace="fragments/custom-questions :: type-2-checkboxes"></div>
</div>
Then the associated div gets loaded from the file custom-questions.html:
<div th:fragment="type-1-checkboxes">
//stuff
</div>
<div th:fragment="type-2-checkboxes">
//stuff
</div>
I am just encountering this issue (this is my first time with thymeleaf/spring). This is what solved it for me:
<div class="col-md-12" th:include="__${template}__ :: body" ...
In Thymeleaf 3.0, the following solution has worked for me:
<div th:replace="('fragments/' + ${template}) :: (${template})">
(Note however, that I use it with fixed name of the fragment and dynamic name of the template, so the parantheses around :: (${template}) might be optional.)
The solution is inspired by documentation for Thymeleaf in https://www.thymeleaf.org/doc/tutorials/3.0/usingthymeleaf.html#fragment-specification-syntax
Both templatename and selector in the above examples can be fully-featured expressions (even conditionals!) like:
<div th:insert="footer :: (${user.isAdmin}? #{footer.admin} : #{footer.normaluser})"></div>
Note again how the surrounding ~{...} envelope is optional in th:insert/th:replace
<div th:insert=“${subpage}::fragementName”>
Just change subpage names and you will dynamic behaviour in thymleaf

Unable to add events after AJAX load using jQuery

I have a web page on which I use jQuery's AJAX to load new elements into a div. This part of my page works fine.
I now want to add a similar event to these newly-added elements. To do this I planned to use jQuery's .live() method but nothing appears to happen.
So I initially start with this
<div id="change-agent-list" class="tooltip">
<div class="top"></div>
<div class="middle"></div>
<div class="bottom"></div>
</div>
Into .middle I asynchronously load markup that looks like this:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title></title>
</head>
<body>
<form name="main" method="post" action="/ils/agent-selector/" id="main">
<div>
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKMTQ1MTc3ODM4NGRkg9mLyLiGNVcP/ppO9C/IbwpxdwI=" />
</div>
<ul id="content_0_agentsUL">
<li>
Agent 1
</li>
<li>
Agent 2
</li>
<li>
Agent 3
</li>
</ul>
<div id="agent-details"></div>
</form>
</body>
</html>
When the page initially loads I use this script - my intention is to add a click handler for each of the .agent-name elements that are asynchronously added later.
$j(document).ready(function () {
$j(".agent-name").live("click", function() {
var agentDetails = $j(".agent-details");
var loadingContent = '<div id="ajax-load"><img src="/sitecore/__/_images/global/ajax-load.gif" alt="AJAX content loading" /></div>';
agentDetails.show();
agentDetails.empty().html(loadingContent);
var modalURL = $j(".agent-name").attr("href");
agentDetails.load(modalURL);*/
return false;
});
});
The problem is that no events are being bound to the .agent-name elements. I've tried replacing all the inner script with a simple alert() so that I can see if any events are being bound to the .agent-name elements, and I can't get this alert() to display.
So in other words, no events are being bound to my .agent-name elements.
Even if I move the agent-name class to the list elements and change the jQuery to simply
$j(".agent-name").live("click", function() {
alert('1');
});
I still get nothing when I click on the elements.
Can anyone explain why, or how I fix this so that I can late-bind events to elements created in an AJAX callback?
I eventually solved this by using jQuery's on instead of "live".
You can only have one #agent-name because IDs are unique. You can just use $('#agents .link') since you already have a class on each anchor.
Not sure if this is helpful, but this works for me:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title></title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$(".agent-name").live("click", function() {
alert("click");
return false;
});
});
</script>
</head>
<body>
<form name="main" method="post" action="/ils/agent-selector/" id="main">
<div>
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKMTQ1MTc3ODM4NGRkg9mLyLiGNVcP/ppO9C/IbwpxdwI=" />
</div>
<ul id="content_0_agentsUL">
<li>
Agent 1
</li>
<li>
Agent 2
</li>
<li>
Agent 3
</li>
</ul>
<div id="agent-details"></div>
</form>
</body>
</html>

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