├── .gitignore
├── README.md
├── pom.xml
└── src
    ├── main
        ├── java
        │   └── org
        │   │   └── paginationdemo
        │   │       ├── Application.java
        │   │       ├── controller
        │   │           └── PersonController.java
        │   │       ├── domain
        │   │           ├── Pager.java
        │   │           └── Person.java
        │   │       ├── repository
        │   │           └── PersonRepository.java
        │   │       └── service
        │   │           ├── PersonService.java
        │   │           └── impl
        │   │               └── PersonServiceImpl.java
        └── resources
        │   ├── application.properties
        │   ├── data.sql
        │   ├── static
        │       ├── css
        │       │   └── style.css
        │       └── js
        │       │   └── app.js
        │   └── templates
        │       └── persons.html
    └── test
        └── java
            └── org
                └── paginationdemo
                    └── ApplicationTests.java


/.gitignore:
--------------------------------------------------------------------------------
1 | target/
2 | .classpath
3 | .project
4 | .settings/
5 | /.idea/
6 | *.iml


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/README.md:
--------------------------------------------------------------------------------
 1 | # Demo for pagination with Thymeleaf template engine
 2 | 
 3 | ## How to run
 4 | 
 5 | Run `mvn install` in root directory
 6 | 
 7 | Run `java -jar target/spring-thymeleaf-pagination-0.0.1-SNAPSHOT.jar`
 8 | 
 9 | Go to http://localhost:8080
10 | 
11 | Special thanks to [Bruno Raljic](https://github.com/brunoraljic) for implementation of algorithm that calculates button span.


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/pom.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 4 |     <modelVersion>4.0.0</modelVersion>
 5 | 
 6 |     <groupId>org.paginationdemo</groupId>
 7 |     <artifactId>spring-thymeleaf-pagination</artifactId>
 8 |     <version>0.0.1-SNAPSHOT</version>
 9 |     <packaging>jar</packaging>
10 | 
11 |     <name>spring-thymeleaf-pagination</name>
12 |     <description>Thymeleaf pagination demo with Spring</description>
13 | 
14 |     <parent>
15 |         <groupId>org.springframework.boot</groupId>
16 |         <artifactId>spring-boot-starter-parent</artifactId>
17 |         <version>2.3.1.RELEASE</version>
18 |         <relativePath/> <!-- lookup parent from repository -->
19 |     </parent>
20 | 
21 |     <properties>
22 |         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
23 |         <java.version>15</java.version>
24 |     </properties>
25 | 
26 |     <dependencies>
27 |         <dependency>
28 |             <groupId>org.springframework.boot</groupId>
29 |             <artifactId>spring-boot-starter-data-jpa</artifactId>
30 |         </dependency>
31 | 
32 |         <dependency>
33 |             <groupId>org.springframework.boot</groupId>
34 |             <artifactId>spring-boot-starter-thymeleaf</artifactId>
35 |         </dependency>
36 |         <dependency>
37 |             <groupId>org.springframework.boot</groupId>
38 |             <artifactId>spring-boot-starter-web</artifactId>
39 |         </dependency>
40 |         <dependency>
41 |             <groupId>org.webjars</groupId>
42 |             <artifactId>bootstrap</artifactId>
43 |             <version>3.3.7-1</version>
44 |         </dependency>
45 | 
46 |         <dependency>
47 |             <groupId>com.h2database</groupId>
48 |             <artifactId>h2</artifactId>
49 |             <scope>runtime</scope>
50 |         </dependency>
51 |         <dependency>
52 |             <groupId>org.springframework.boot</groupId>
53 |             <artifactId>spring-boot-starter-test</artifactId>
54 |             <scope>test</scope>
55 |         </dependency>
56 |     </dependencies>
57 | 
58 |     <build>
59 |         <plugins>
60 |             <plugin>
61 |                 <groupId>org.springframework.boot</groupId>
62 |                 <artifactId>spring-boot-maven-plugin</artifactId>
63 |             </plugin>
64 |         </plugins>
65 |     </build>
66 | 
67 | 
68 | </project>
69 | 


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/src/main/java/org/paginationdemo/Application.java:
--------------------------------------------------------------------------------
 1 | package org.paginationdemo;
 2 | 
 3 | import org.springframework.boot.SpringApplication;
 4 | import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 | 
 6 | @SpringBootApplication
 7 | public class Application {
 8 | 
 9 |     public static void main(String[] args) {
10 |         SpringApplication.run(Application.class, args);
11 |     }
12 | }
13 | 


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/src/main/java/org/paginationdemo/controller/PersonController.java:
--------------------------------------------------------------------------------
 1 | package org.paginationdemo.controller;
 2 | 
 3 | import org.paginationdemo.domain.Pager;
 4 | import org.paginationdemo.service.PersonService;
 5 | import org.springframework.data.domain.PageRequest;
 6 | import org.springframework.stereotype.Controller;
 7 | import org.springframework.web.bind.annotation.GetMapping;
 8 | import org.springframework.web.bind.annotation.RequestParam;
 9 | import org.springframework.web.servlet.ModelAndView;
10 | 
11 | import java.util.Optional;
12 | 
13 | /**
14 |  * @author Branislav Lazic
15 |  */
16 | @Controller
17 | public class PersonController {
18 | 
19 |     private static final int BUTTONS_TO_SHOW = 5;
20 |     private static final int INITIAL_PAGE = 0;
21 |     private static final int INITIAL_PAGE_SIZE = 5;
22 |     private static final int[] PAGE_SIZES = {5, 10, 20};
23 | 
24 |     private final PersonService personService;
25 | 
26 |     public PersonController(PersonService studentService) {
27 |         this.personService = studentService;
28 |     }
29 | 
30 |     /**
31 |      * Handles all requests
32 |      *
33 |      * @param pageSize - the size of the page
34 |      * @param page     - the page number
35 |      * @return model and view
36 |      */
37 |     @GetMapping("/")
38 |     public ModelAndView showPersonsPage(@RequestParam("pageSize") Optional<Integer> pageSize,
39 |                                         @RequestParam("page") Optional<Integer> page) {
40 |         var modelAndView = new ModelAndView("persons");
41 | 
42 |         // Evaluate page size. If requested parameter is null, return initial
43 |         // page size
44 |         int evalPageSize = pageSize.orElse(INITIAL_PAGE_SIZE);
45 |         // If a requested parameter is null or less than 1,
46 |         // return the initial size. Otherwise, return value of
47 |         // param. decreased by 1.
48 |         int evalPage = page.filter(p -> p >= 1)
49 |                 .map(p -> p - 1)
50 |                 .orElse(INITIAL_PAGE);
51 | 
52 |         var persons = personService.findAllPageable(PageRequest.of(evalPage, evalPageSize));
53 |         var pager = new Pager(persons.getTotalPages(), persons.getNumber(), BUTTONS_TO_SHOW);
54 | 
55 |         modelAndView.addObject("persons", persons);
56 |         modelAndView.addObject("selectedPageSize", evalPageSize);
57 |         modelAndView.addObject("pageSizes", PAGE_SIZES);
58 |         modelAndView.addObject("pager", pager);
59 |         return modelAndView;
60 |     }
61 | 
62 | }
63 | 


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/src/main/java/org/paginationdemo/domain/Pager.java:
--------------------------------------------------------------------------------
 1 | package org.paginationdemo.domain;
 2 | 
 3 | /**
 4 |  * Used to calculate span of buttons which will be displayed on a page
 5 |  *
 6 |  * @author Branislav Lazic
 7 |  * @author Bruno Raljic
 8 |  */
 9 | public class Pager {
10 | 
11 |     private int buttonsToShow = 5;
12 | 
13 |     private int startPage;
14 | 
15 |     private int endPage;
16 | 
17 |     public Pager(int totalPages, int currentPage, int buttonsToShow) {
18 | 
19 |         setButtonsToShow(buttonsToShow);
20 | 
21 |         int halfPagesToShow = getButtonsToShow() / 2;
22 | 
23 |         if (totalPages <= getButtonsToShow()) {
24 |             setStartPage(1);
25 |             setEndPage(totalPages);
26 | 
27 |         } else if (currentPage - halfPagesToShow <= 0) {
28 |             setStartPage(1);
29 |             setEndPage(getButtonsToShow());
30 | 
31 |         } else if (currentPage + halfPagesToShow == totalPages) {
32 |             setStartPage(currentPage - halfPagesToShow);
33 |             setEndPage(totalPages);
34 | 
35 |         } else if (currentPage + halfPagesToShow > totalPages) {
36 |             setStartPage(totalPages - getButtonsToShow() + 1);
37 |             setEndPage(totalPages);
38 | 
39 |         } else {
40 |             setStartPage(currentPage - halfPagesToShow);
41 |             setEndPage(currentPage + halfPagesToShow);
42 |         }
43 | 
44 |     }
45 | 
46 |     public int getButtonsToShow() {
47 |         return buttonsToShow;
48 |     }
49 | 
50 |     public void setButtonsToShow(int buttonsToShow) {
51 |         if (buttonsToShow % 2 != 0) {
52 |             this.buttonsToShow = buttonsToShow;
53 |         } else {
54 |             throw new IllegalArgumentException("Must be an odd value!");
55 |         }
56 |     }
57 | 
58 |     public int getStartPage() {
59 |         return startPage;
60 |     }
61 | 
62 |     public void setStartPage(int startPage) {
63 |         this.startPage = startPage;
64 |     }
65 | 
66 |     public int getEndPage() {
67 |         return endPage;
68 |     }
69 | 
70 |     public void setEndPage(int endPage) {
71 |         this.endPage = endPage;
72 |     }
73 | 
74 |     @Override
75 |     public String toString() {
76 |         return "Pager [startPage=" + startPage + ", endPage=" + endPage + "]";
77 |     }
78 | 
79 | }
80 | 


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/src/main/java/org/paginationdemo/domain/Person.java:
--------------------------------------------------------------------------------
 1 | package org.paginationdemo.domain;
 2 | 
 3 | import javax.persistence.Entity;
 4 | import javax.persistence.GeneratedValue;
 5 | import javax.persistence.GenerationType;
 6 | import javax.persistence.Id;
 7 | 
 8 | @Entity
 9 | public class Person {
10 | 
11 |     @Id
12 |     @GeneratedValue(strategy = GenerationType.IDENTITY)
13 |     private long personId;
14 | 
15 |     private String firstName;
16 | 
17 |     private String lastName;
18 | 
19 |     private int age;
20 | 
21 |     public Person() {
22 |     }
23 | 
24 |     public Person(String firstName, String lastName, int age) {
25 |         this.firstName = firstName;
26 |         this.lastName = lastName;
27 |         this.age = age;
28 |     }
29 | 
30 |     public long getPersonId() {
31 |         return personId;
32 |     }
33 | 
34 |     public void setPersonId(long studentId) {
35 |         this.personId = studentId;
36 |     }
37 | 
38 |     public String getFirstName() {
39 |         return firstName;
40 |     }
41 | 
42 |     public void setFirstName(String firstName) {
43 |         this.firstName = firstName;
44 |     }
45 | 
46 |     public String getLastName() {
47 |         return lastName;
48 |     }
49 | 
50 |     public void setLastName(String lastName) {
51 |         this.lastName = lastName;
52 |     }
53 | 
54 |     public int getAge() {
55 |         return age;
56 |     }
57 | 
58 |     public void setAge(int age) {
59 |         this.age = age;
60 |     }
61 | 
62 |     @Override
63 |     public String toString() {
64 |         return "Person [personId=" + personId + ", firstName=" + firstName + ", lastName=" + lastName + ", age=" + age + "]";
65 |     }
66 | 
67 | }
68 | 


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/src/main/java/org/paginationdemo/repository/PersonRepository.java:
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 1 | package org.paginationdemo.repository;
 2 | 
 3 | import org.paginationdemo.domain.Person;
 4 | import org.springframework.data.repository.PagingAndSortingRepository;
 5 | import org.springframework.stereotype.Repository;
 6 | 
 7 | @Repository
 8 | public interface PersonRepository extends PagingAndSortingRepository<Person, Long> {
 9 | 
10 | }
11 | 


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/src/main/java/org/paginationdemo/service/PersonService.java:
--------------------------------------------------------------------------------
 1 | package org.paginationdemo.service;
 2 | 
 3 | import org.paginationdemo.domain.Person;
 4 | import org.springframework.data.domain.Page;
 5 | import org.springframework.data.domain.Pageable;
 6 | 
 7 | public interface PersonService {
 8 | 
 9 |     /**
10 |      * Finds a "page" of persons
11 |      *
12 |      * @param pageable
13 |      * @return {@link Page} instance
14 |      */
15 |     Page<Person> findAllPageable(Pageable pageable);
16 | }
17 | 


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/src/main/java/org/paginationdemo/service/impl/PersonServiceImpl.java:
--------------------------------------------------------------------------------
 1 | package org.paginationdemo.service.impl;
 2 | 
 3 | import org.paginationdemo.domain.Person;
 4 | import org.paginationdemo.repository.PersonRepository;
 5 | import org.paginationdemo.service.PersonService;
 6 | import org.springframework.data.domain.Page;
 7 | import org.springframework.data.domain.Pageable;
 8 | import org.springframework.stereotype.Service;
 9 | 
10 | @Service
11 | public class PersonServiceImpl implements PersonService {
12 | 
13 |     private final PersonRepository personRepository;
14 | 
15 |     public PersonServiceImpl(PersonRepository personRepository) {
16 |         this.personRepository = personRepository;
17 |     }
18 | 
19 |     @Override
20 |     public Page<Person> findAllPageable(Pageable pageable) {
21 |         return personRepository.findAll(pageable);
22 |     }
23 | }
24 | 


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/src/main/resources/application.properties:
--------------------------------------------------------------------------------
1 | spring.thymeleaf.cache=false


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/src/main/resources/data.sql:
--------------------------------------------------------------------------------
  1 | -- test data generated by http://www.generatedata.com/
  2 | insert into person
  3 | (first_name, last_name, age)
  4 | values
  5 |   ('Aiko', 'Thompson', 23),
  6 |   ('Dorian', 'Carpenter', 61),
  7 |   ('Blythe', 'Harvey', 69),
  8 |   ('Lunea', 'Mcconnell', 17),
  9 |   ('Hector', 'Hopkins', 23),
 10 |   ('Darius', 'Brady', 54),
 11 |   ('Samuel', 'Kennedy', 88),
 12 |   ('Allegra', 'Anderson', 32),
 13 |   ('Mollie', 'Logan', 43),
 14 |   ('Belle', 'Francis', 65),
 15 |   ('Ivan', 'Nguyen', 55),
 16 |   ('Alden', 'Christensen', 22),
 17 |   ('Selma', 'Hendrix', 81),
 18 |   ('Pascale', 'Padilla', 44),
 19 |   ('Brody', 'Rosales', 44),
 20 |   ('Tucker', 'Simmons', 95),
 21 |   ('Zelenia', 'Slater', 63),
 22 |   ('Skyler', 'Bush', 17),
 23 |   ('Zephr', 'Alexander', 52),
 24 |   ('Myra', 'Mccarthy', 53),
 25 |   ('Ross', 'Hebert', 88),
 26 |   ('Craig', 'Fox', 54),
 27 |   ('Isaiah', 'Rich', 92),
 28 |   ('Myra', 'Small', 56),
 29 |   ('Sigourney', 'Briggs', 68),
 30 |   ('Christian', 'Pollard', 20),
 31 |   ('Aidan', 'Ramsey', 91),
 32 |   ('Anne', 'Johnston', 78),
 33 |   ('Sybil', 'Lara', 82),
 34 |   ('Astra', 'Burgess', 33),
 35 |   ('Harlan', 'Short', 76),
 36 |   ('Wyoming', 'Bruce', 44),
 37 |   ('Martena', 'Hewitt', 52),
 38 |   ('Gavin', 'Middleton', 99),
 39 |   ('Angelica', 'Mcfarland', 94),
 40 |   ('Rama', 'Bauer', 76),
 41 |   ('Ishmael', 'Lyons', 33),
 42 |   ('Laith', 'Todd', 31),
 43 |   ('Finn', 'Schultz', 59),
 44 |   ('Brock', 'Schroeder', 37),
 45 |   ('Britanney', 'Trujillo', 57),
 46 |   ('Evelyn', 'Mcneil', 90),
 47 |   ('Jada', 'Ray', 19),
 48 |   ('Abel', 'Watkins', 23),
 49 |   ('Leonard', 'Martin', 10),
 50 |   ('Karleigh', 'Velez', 26),
 51 |   ('Shoshana', 'Joyner', 49),
 52 |   ('Bryar', 'Bush', 83),
 53 |   ('Hayfa', 'Foster', 28),
 54 |   ('Shoshana', 'Giles', 66),
 55 |   ('Amos', 'Owen', 46),
 56 |   ('Erin', 'Slater', 36),
 57 |   ('Kalia', 'Mason', 73),
 58 |   ('Amber', 'Livingston', 62),
 59 |   ('Ralph', 'Mayo', 86),
 60 |   ('Brenden', 'Evans', 27),
 61 |   ('Noble', 'Mcclure', 75),
 62 |   ('Hiram', 'Holland', 20),
 63 |   ('Zachary', 'Diaz', 24),
 64 |   ('Nigel', 'Santos', 100),
 65 |   ('Dominic', 'Ingram', 60),
 66 |   ('Aline', 'Caldwell', 35),
 67 |   ('Mara', 'Clarke', 65),
 68 |   ('Cora', 'Tyson', 47),
 69 |   ('Avram', 'Compton', 87),
 70 |   ('Bruno', 'Tanner', 95),
 71 |   ('Roth', 'Sharpe', 18),
 72 |   ('Zelenia', 'Nicholson', 84),
 73 |   ('Kitra', 'Olson', 17),
 74 |   ('Ina', 'Knox', 14),
 75 |   ('Quin', 'Durham', 46),
 76 |   ('Noelani', 'Cruz', 32),
 77 |   ('Kiayada', 'Kerr', 20),
 78 |   ('Harrison', 'Maldonado', 18),
 79 |   ('Clark', 'Baird', 81),
 80 |   ('Nina', 'Roy', 20),
 81 |   ('Barry', 'William', 73),
 82 |   ('Samuel', 'Frye', 92),
 83 |   ('Kato', 'French', 90),
 84 |   ('Ursa', 'Heath', 31),
 85 |   ('Hollee', 'Fields', 79),
 86 |   ('Fulton', 'Pollard', 94),
 87 |   ('Brody', 'Fleming', 10),
 88 |   ('Brock', 'Garrison', 23),
 89 |   ('Lani', 'Fields', 20),
 90 |   ('Sybill', 'Hickman', 59),
 91 |   ('Todd', 'Goodwin', 14),
 92 |   ('Ezekiel', 'Solomon', 11),
 93 |   ('Karly', 'Juarez', 100),
 94 |   ('Portia', 'Grant', 31),
 95 |   ('Wang', 'Sherman', 52),
 96 |   ('Justine', 'Perkins', 25),
 97 |   ('Ryan', 'Stevenson', 85),
 98 |   ('Rogan', 'Johns', 50),
 99 |   ('Carson', 'West', 48),
100 |   ('Ulysses', 'Garrison', 87),
101 |   ('Chiquita', 'Kramer', 48),
102 |   ('Dahlia', 'Conner', 73),
103 |   ('Sara', 'Becker', 71),
104 |   ('Plato', 'Craig', 17);


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/src/main/resources/static/css/style.css:
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 1 | .pagination-container {
 2 |     text-align: right;
 3 |     padding-right: 0;
 4 | }
 5 | 
 6 | .page-select {
 7 |     padding-left: 0;
 8 | }
 9 | 
10 | .disabled {
11 |     pointer-events: none;
12 |     opacity: 0.5;
13 | }
14 | 
15 | .pointer-disabled {
16 |     pointer-events: none;
17 | }


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/src/main/resources/static/js/app.js:
--------------------------------------------------------------------------------
 1 | $(document).ready(() => {
 2 |     changePageAndSize();
 3 | });
 4 | 
 5 | changePageAndSize = () => {
 6 |     $('#pageSizeSelect').change(evt => {
 7 |         window.location.replace(`/?pageSize=${evt.target.value}&page=1`);
 8 |     });
 9 | }
10 | 


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/src/main/resources/templates/persons.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
 3 | <head>
 4 |     <link th:href="@{/webjars/bootstrap/3.3.7-1/css/bootstrap.min.css}" rel="stylesheet"/>
 5 |     <link th:href="@{/css/style.css}" rel="stylesheet"/>
 6 |     <title>Persons</title>
 7 | </head>
 8 | <body>
 9 | <div class="container">
10 |     <div class="row">
11 |         <h1>Persons</h1>
12 |     </div>
13 |     <div class="row">
14 |         <table class="table table-bordered">
15 |             <tr>
16 |                 <th>First name</th>
17 |                 <th>Last name</th>
18 |                 <th>Age</th>
19 |             </tr>
20 |             <tr th:each="person : ${persons}">
21 |                 <td th:text="${person.firstName}"></td>
22 |                 <td th:text="${person.lastName}"></td>
23 |                 <td th:text="${person.age}"></td>
24 |             </tr>
25 |         </table>
26 |     </div>
27 |     <div class="row">
28 |         <div class="form-group col-md-1 page-select">
29 |             <select class="form-control pagination" id="pageSizeSelect">
30 |                 <option th:each="pageSize : ${pageSizes}" th:text="${pageSize}" th:value="${pageSize}"
31 |                         th:selected="${pageSize} == ${selectedPageSize}"></option>
32 |             </select>
33 |         </div>
34 |         <div th:if="${persons.totalPages != 1}" class="form-group col-md-11 pagination-container">
35 |             <ul class="pagination">
36 |                 <li th:class="${persons.number == 0} ? disabled">
37 |                     <a class="pageLink" th:href="@{/(pageSize=${selectedPageSize}, page=1)}">&laquo;</a>
38 |                 </li>
39 |                 <li th:class="${persons.number == 0} ? disabled">
40 |                     <a class="pageLink" th:href="@{/(pageSize=${selectedPageSize}, page=${persons.number})}">&larr;</a>
41 |                 </li>
42 |                 <li th:class="${persons.number == (page - 1)} ? 'active pointer-disabled'"
43 |                     th:each="page : ${#numbers.sequence(pager.startPage, pager.endPage)}">
44 |                     <a class="pageLink" th:href="@{/(pageSize=${selectedPageSize}, page=${page})}"
45 |                        th:text="${page}"></a>
46 |                 </li>
47 |                 <li th:class="${persons.number + 1 == persons.totalPages} ? disabled">
48 |                     <a class="pageLink"
49 |                        th:href="@{/(pageSize=${selectedPageSize}, page=${persons.number + 2})}">&rarr;</a>
50 |                 </li>
51 |                 <li th:class="${persons.number + 1 == persons.totalPages} ? disabled">
52 |                     <a class="pageLink"
53 |                        th:href="@{/(pageSize=${selectedPageSize}, page=${persons.totalPages})}">&raquo;</a>
54 |                 </li>
55 |             </ul>
56 |         </div>
57 |     </div>
58 | </div>
59 | <script th:src="@{/webjars/jquery/1.11.1/jquery.min.js}"></script>
60 | <script th:src="@{/webjars/bootstrap/3.3.7-1/js/bootstrap.min.js}"></script>
61 | <script th:src="@{/js/app.js}"></script>
62 | </body>
63 | </html>


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/src/test/java/org/paginationdemo/ApplicationTests.java:
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 1 | package org.paginationdemo;
 2 | 
 3 | import org.junit.Test;
 4 | import org.junit.runner.RunWith;
 5 | import org.springframework.boot.test.context.SpringBootTest;
 6 | import org.springframework.test.context.junit4.SpringRunner;
 7 | 
 8 | @RunWith(SpringRunner.class)
 9 | @SpringBootTest
10 | public class ApplicationTests {
11 | 
12 |     @Test
13 |     public void contextLoads() {
14 |     }
15 | 
16 | }
17 | 


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