在本教程中，您将学习使用 Spring JdbcTemplate、MySQL 和 Thymeleaf 为现有 Spring Boot 应用程序实现分页、排序和过滤/搜索功能。
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>net.codejava</groupId>
<artifactId>SortingPagingSearchFilterJdbcTemplate</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>SortingPagingSearchFilterJdbcTemplate</name>
<description>Spring Boot Web App</description>
<properties>
<java.version>17</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<!-- <scope>true</scope> -->
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
application.properties
spring.jpa.hibernate.ddl-auto=none
spring.datasource.url=jdbc:mysql://localhost:3306/sales?autoReconnect=true&useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
spring.datasource.username=root
spring.datasource.password=root
#logging.level.root=
#debug=true
logging.level.org.springframework.jdbc.core.JdbcTemplate=DEBUG
ProductManagerApplication.java
package net.codejava;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class ProductManagerApplication {
public static void main(String[] args) {
SpringApplication.run(ProductManagerApplication.class, args);
}
}
Product.java
package net.codejava;
public class Product {
private Long id;
private String name;
private String brand;
private String madein;
private float price;
protected Product() {
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getBrand() {
return brand;
}
public void setBrand(String brand) {
this.brand = brand;
}
public String getMadein() {
return madein;
}
public void setMadein(String madein) {
this.madein = madein;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
this.price = price;
}
}
ProductRepository.java
package net.codejava;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.domain.Sort.Order;
import org.springframework.jdbc.core.JdbcTemplate;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.namedparam.BeanPropertySqlParameterSource;
import org.springframework.jdbc.core.namedparam.MapSqlParameterSource;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
import org.springframework.jdbc.core.namedparam.SqlParameterSource;
import org.springframework.jdbc.support.GeneratedKeyHolder;
import org.springframework.stereotype.Repository;
@Repository
public class ProductRepository {
@Autowired
private JdbcTemplate jdbcTemplate;
// sort by single column name
public List<Product> findAll(Sort sort) {
Order order = sort.toList().get(0);
return jdbcTemplate.query("SELECT * FROM product ORDER BY " + order.getProperty() + " " + order.getDirection().name(),
BeanPropertyRowMapper.newInstance(Product.class));
}
// defaults sorts by Id if order not provided
public Page<Product> findAll(Pageable page) {
int count = jdbcTemplate.queryForObject("SELECT count(*) FROM product", Integer.class);
Order order = !page.getSort().isEmpty() ? page.getSort().toList().get(0) : Order.by("ID");
List<Product> products = jdbcTemplate.query("SELECT * FROM product ORDER BY " + order.getProperty() + " "
+ order.getDirection().name() + " LIMIT " + page.getPageSize() + " OFFSET " + page.getOffset(),
BeanPropertyRowMapper.newInstance(Product.class));
return new PageImpl<Product>(products, page, count);
}
public Page<Product> findAllByContaining(String keyword, Pageable page) {
int count = jdbcTemplate.queryForObject("SELECT count(* ) FROM product WHERE CONCAT(id, ' ', name, ' ' , brand, ' ' , madein, ' ' , price) LIKE CONCAT('%',?,'%') ", Integer.class, keyword);
Order order = !page.getSort().isEmpty() ? page.getSort().toList().get(0) : Order.by("ID");
List<Product> products = jdbcTemplate.query("SELECT * FROM product WHERE CONCAT(id, ' ', name, ' ' , brand, ' ' , madein, ' ' , price) LIKE CONCAT('%',?,'%') ORDER BY " + order.getProperty() + " "
+ order.getDirection().name() + " LIMIT " + page.getPageSize() + " OFFSET " + page.getOffset(),
BeanPropertyRowMapper.newInstance(Product.class), keyword
);
return new PageImpl<Product>(products, page, count);
}
public void save(Product product) {
NamedParameterJdbcTemplate namedParameterJdbcTemplate = new NamedParameterJdbcTemplate(jdbcTemplate);
GeneratedKeyHolder generatedKeyHolder = new GeneratedKeyHolder();
String sql = "insert into product (name, brand,madein,price) values (:name, :brand,:madein,:price)";
SqlParameterSource paramSource = new MapSqlParameterSource().addValue("name", product.getName()).addValue("brand", product.getBrand()
).addValue("madein", product.getMadein()).addValue("price", product.getPrice());
namedParameterJdbcTemplate.update(sql, paramSource, generatedKeyHolder);
long id = generatedKeyHolder.getKey().longValue();
System.out.println(id);
product.setId(id);
}
public Product findById(long id) {
NamedParameterJdbcTemplate namedParameterJdbcTemplate = new NamedParameterJdbcTemplate(jdbcTemplate);
String sql = "SELECT * FROM product WHERE id = :id";
Map parameters = new HashMap();
parameters.put("id", id);
return namedParameterJdbcTemplate.queryForObject(sql, parameters, BeanPropertyRowMapper.newInstance(Product.class));
}
public void update(Product product) {
NamedParameterJdbcTemplate namedParameterJdbcTemplate = new NamedParameterJdbcTemplate(jdbcTemplate);
String sql = "UPDATE product SET name=:name, brand=:brand, madein=:madein, price=:price WHERE id=:id";
BeanPropertySqlParameterSource param = new BeanPropertySqlParameterSource(product);
int i = namedParameterJdbcTemplate.update(sql, param);
System.out.println(i);
}
public void deleteById(long id) {
NamedParameterJdbcTemplate namedParameterJdbcTemplate = new NamedParameterJdbcTemplate(jdbcTemplate);
String sql = "DELETE FROM product WHERE id = :id";
SqlParameterSource paramSource = new MapSqlParameterSource("id", id);
int i = namedParameterJdbcTemplate.update(sql, paramSource);
System.out.println(i);
}
}
ProductService.java
package net.codejava;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.stereotype.Service;
@Service
public class ProductService {
@Autowired
private ProductRepository repo;
public Page<Product> listAll(int pageNumber, String sortField, String sortDir, String keyword) {
Sort sort = Sort.by(sortField);
sort = sortDir.equals("asc") ? sort.ascending() : sort.descending();
Pageable pageable = PageRequest.of(pageNumber - 1, 7, sort); // 7 rows per page
if (keyword != null) {
return repo.findAllByContaining(keyword, pageable);
}
return repo.findAll(pageable);
}
public void save(Product product) {
repo.save(product);
}
public Product get(Long id) {
return repo.findById(id);
}
public void update(Product product) {
repo.update(product);
}
public void delete(Long id) {
repo.deleteById(id);
}
}
AppController.java
package net.codejava;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.repository.query.Param;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import java.util.List;
@Controller
public class AppController {
@Autowired
private ProductService service;
@RequestMapping("/")
public String viewHomePage(Model model) {
// String keyword = "reebok";
String keyword = null;
/*
* if (keyword != null) { return listByPage(model, 1, "name", "asc", keyword); }
*/
return listByPage(model, 1, "name", "asc", keyword);
}
@GetMapping("/page/{pageNumber}")
public String listByPage(Model model, @PathVariable("pageNumber") int currentPage,
@Param("sortField") String sortField, @Param("sortDir") String sortDir, @Param("keyword") String keyword) {
Page<Product> page = service.listAll(currentPage, sortField, sortDir, keyword);
long totalItems = page.getTotalElements();
int totalPages = page.getTotalPages();
// int currentPage = page.previousPageable().getPageNumber();
List<Product> listProducts = page.getContent();
model.addAttribute("totalItems", totalItems);
model.addAttribute("totalPages", totalPages);
model.addAttribute("currentPage", currentPage);
model.addAttribute("listProducts", listProducts); // next bc of thymeleaf we make the index.html
model.addAttribute("sortField", sortField);
model.addAttribute("sortDir", sortDir);
model.addAttribute("keyword", keyword);
String reverseSortDir = sortDir.equals("asc") ? "desc" : "asc";
model.addAttribute("reverseSortDir", reverseSortDir);
return "index";
}
@RequestMapping("/new")
public String showNewProductForm(Model model) {
Product product = new Product();
model.addAttribute("product", product);
return "new_product";
}
@RequestMapping(value = "/save", method = RequestMethod.POST)
public String saveProduct(@ModelAttribute("product") Product product) {
service.save(product);
return "redirect:/";
}
@RequestMapping("/edit/{id}")
public ModelAndView showEditProductForm(@PathVariable(name = "id") Long id) {
ModelAndView modelAndView = new ModelAndView("edit_product");
Product product = service.get(id);
modelAndView.addObject("product", product);
return modelAndView;
}
@RequestMapping(value = "/update", method = RequestMethod.POST)
public String updateProduct(@ModelAttribute("product") Product product) {
service.update(product);
return "redirect:/";
}
@RequestMapping("/delete/{id}")
public String deleteProduct(@PathVariable(name = "id") Long id) {
service.delete(id);
return "redirect:/";
}
}
index.html
<!-- http://localhost:8086/ -->
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="utf-8" />
<title>Product Manager</title>
</head>
<body>
<div align="center">
<div>
<h1>Product Manager</h1>
<a href="/new">Create New Product</a> <br />
<br />
</div>
<div>
<form th:action="@{/page/1}">
<input type="hidden" name="sortField" th:value="${sortField}" /> <input
type="hidden" name="sortDir" th:value="${sortDir}" /> Filter: <input
type="text" name="keyword" size="50" th:value="${keyword}" required />
<input type="submit" value="Search" /> <input
type="button" value="Clear" id="btnClear" onclick="clearSearch()" />
</form>
</div>
<div> </div>
<div>
<table border="1" cellpadding="10">
<thead>
<tr>
<th><a
th:href="@{'/page/' + ${currentPage} + '?sortField=id&sortDir=' + ${reverseSortDir} + ${keyword != null ? '&keyword=' + keyword : ''}}">
Product ID</a>
</th>
<th><a
th:href="@{'/page/' + ${currentPage} + '?sortField=name&sortDir=' + ${reverseSortDir} + ${keyword != null ? '&keyword=' + keyword : ''}}">
Name</a>
</th>
<th><a
th:href="@{'/page/' + ${currentPage} + '?sortField=brand&sortDir=' + ${reverseSortDir} + ${keyword != null ? '&keyword=' + keyword : ''}}">
Brand</a>
</th>
<th><a
th:href="@{'/page/' + ${currentPage} + '?sortField=madein&sortDir=' + ${reverseSortDir} + ${keyword != null ? '&keyword=' + keyword : ''}}">
Made In</a>
</th>
<th><a
th:href="@{'/page/' + ${currentPage} + '?sortField=price&sortDir=' + ${reverseSortDir} + ${keyword != null ? '&keyword=' + keyword : ''}}">
Price</a>
</th>
<th><a>Actions</a></th>
</tr>
</thead>
<tbody>
<tr th:each="product : ${listProducts}">
<td th:text="${product.id}">Product ID</td>
<td th:text="${product.name}">Name</td>
<td th:text="${product.brand}">Brand</td>
<td th:text="${product.madein}">Made in</td>
<td th:text="${product.price}">Price</td>
<td><a th:href="@{'/edit/' + ${product.id}}">Edit</a>
<a th:href="@{'/delete/' + ${product.id}}">Delete</a>
</td>
</tr>
</tbody>
</table>
</div>
<div> </div>
<div>
Total items: [[${totalItems}]] - Page [[${currentPage}]] of
[[${totalPages}]] <a th:if="${currentPage > 1}"
th:href="@{'/page/1?sortField=' + ${sortField} + '&sortDir=' + ${sortDir} + ${keyword != null ? '&keyword=' + keyword : ''}}">First</a>
<span th:unless="${currentPage > 1}">First</span> <a
th:if="${currentPage > 1}"
th:href="@{'/page/' + ${currentPage - 1} + '?sortField=' + ${sortField} + '&sortDir=' + ${sortDir} + ${keyword != null ? '&keyword=' + keyword : ''}}">Previous</a>
<span th:unless="${currentPage > 1}">Previous</span> <span
th:each="i: ${#numbers.sequence(1, totalPages)}"> <a
th:if="${i != currentPage}"
th:href="@{'/page/' + ${i}} + '?sortField=' + ${sortField} + '&sortDir=' + ${sortDir} + ${keyword != null ? '&keyword=' + keyword : ''}">[[${i}]]</a>
<span th:unless="${i != currentPage}">[[${i}]]</span>
</span> <a th:if="${currentPage < totalPages}"
th:href="@{'/page/' + ${currentPage + 1} + '?sortField=' + ${sortField} + '&sortDir=' + ${sortDir} + ${keyword != null ? '&keyword=' + keyword : ''}}">Next</a>
<span th:unless="${currentPage < totalPages}">Next</span>
<a th:if="${currentPage < totalPages}"
th:href="@{'/page/' + ${totalPages} + '?sortField=' + ${sortField} + '&sortDir=' + ${sortDir} + ${keyword != null ? '&keyword=' + keyword : ''}}">Last</a>
<span th:unless="${currentPage < totalPages}">Last</span>
</div>
<script type="text/javascript">
function clearSearch() {
window.location = "/";
}
</script>
</div>
</body>
</html>new_product.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="ISO-8859-1">
<title>Create new product</title>
</head>
<body>
<div align="center">
<h1>Create new product</h1>
<br />
<form action="#" th:action="@{/save}" th:object="${product}"
method="post">
<table border="0" cellpadding="10">
<tr>
<td>Product Name:</td>
<td><input type="text" th:field="*{name}" /></td>
</tr>
<tr>
<td>Brand</td>
<td><input type="text" th:field="*{brand}" /></td>
</tr>
<tr>
<td>Made in:</td>
<td><input type="text" th:field="*{madein}" /></td>
</tr>
<tr>
<td>Price:</td>
<td><input type="text" th:field="*{price}" /></td>
</tr>
<tr>
<td colspan="2"><button type="submit">Save</button></td>
</tr>
</table>
</form>
</div>
</body>
</html>edit_product.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="ISO-8859-1">
<title>Edit product</title>
</head>
<body>
<div align="center">
<h1>Edit product</h1>
<br />
<form action="#" th:action="@{/update}" th:object="${product}"
method="post">
<table border="0" cellpadding="10">
<tr>
<td>Product ID:</td>
<td><input type="text" th:field="*{id}" readonly="readonly" />
</td>
</tr>
<tr>
<td>Product Name:</td>
<td><input type="text" th:field="*{name}" /></td>
</tr>
<tr>
<td>Brand</td>
<td><input type="text" th:field="*{brand}" /></td>
</tr>
<tr>
<td>Made in:</td>
<td><input type="text" th:field="*{madein}" /></td>
</tr>
<tr>
<td>Price:</td>
<td><input type="text" th:field="*{price}" /></td>
</tr>
<tr>
<td colspan="2"><button type="submit">Save</button></td>
</tr>
</table>
</form>
</div>
</body>
</html>下载：