springboot分页展示功能_SpringBoot + thymeleaf 实现分页
SpringBoot结合Thymeleaf实现分页，很方便。
效果如下
后台代码
项目结构
1. 数据库Config
由于hibernate自动建表字符集为latin不能插入中文，故需要在application.properties中指定：spring.jpa.properties.hibernate.dialect=com.ikeguang.paging.config.MysqlConfig。
MysqlConfig.java代码：
package com.ikeguang.paging.config;
import org.hibernate.dialect.MySQL5Dialect;
import org.springframework.stereotype.Component;
/**
* @ Author: keguang
* @ Date: 2019/7/16 9:58
* @ version: v1.0.0
* @ description: 解决hibernate自动建表字符集为latin不能插入中文的问题。
*/
@Component
@SuppressWarnings("deprecation")
public class MysqlConfig extends MySQL5Dialect{
@Override
public String getTableTypeString() {
return "ENGINE=InnoDB DEFAULT CHARSET=utf8";
}
}
2. 实体类Model
package com.ikeguang.paging.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import java.io.Serializable;
/**
* @ Author: keguang
* @ Date: 2019/6/24 20:18
* @ version: v1.0.0
* @ description:
*/
@Entity
public class User implements Serializable{
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue
private Long id;
@Column(nullable = false, unique = true)
private String userName;
@Column(nullable = false)
private String passWord;
@Column(nullable = false, unique = true)
private String email;
@Column(nullable = true, unique = true)
private String nickName;
@Column(nullable = false)
private String regTime;
public User(){}
public User(String userName, String passWord, String email, String nickName, String regTime) {
this.userName = userName;
this.passWord = passWord;
this.email = email;
this.nickName = nickName;
this.regTime = regTime;
}
// 省略了必须的getter、setter方法
}
3. Jpa操作数据库
UserRepository.java代码
package com.ikeguang.paging.repository;
import com.ikeguang.paging.model.User;
import org.springframework.data.jpa.repository.JpaRepository;
/**
* @ Author: keguang
* @ Date: 2019/7/18 10:23
* @ version: v1.0.0
* @ description:
*/
public interface UserRepository extends JpaRepository{
User findById(long id);
void deleteById(long id);
}
4. service层
UserService代码
package com.ikeguang.paging.service;
import com.ikeguang.paging.model.User;
import org.springframework.data.domain.Page;
/**
* @ Author: keguang
* @ Date: 2019/7/18 10:26
* @ version: v1.0.0
* @ description:
*/
public interface UserService {
Page getUserList(int pageNum, int pageSize);
User findUserById(long id);
void save(User user);
void edit(User user);
void delete(long id);
}
service实现层
UserServiceImpl.java代码
package com.ikeguang.paging.service.impl;
import com.ikeguang.paging.model.User;
import com.ikeguang.paging.repository.UserRepository;
import com.ikeguang.paging.service.UserService;
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;
/**
* @ Author: keguang
* @ Date: 2019/7/18 10:27
* @ version: v1.0.0
* @ description:
*/
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserRepository userRepository;
@Override
public Page getUserList(int pageNum, int pageSize) {
Sort sort = new Sort(Sort.Direction.DESC, "id");
Pageable pageable = PageRequest.of(pageNum, pageSize, sort);
Page users = userRepository.findAll(pageable);
return users;
}
@Override
public User findUserById(long id) {
return userRepository.findById(id);
}
@Override
public void save(User user) {
userRepository.save(user);
}
@Override
public void edit(User user) {
userRepository.save(user);
}
@Override
public void delete(long id) {
userRepository.deleteById(id);
}
}
5. Controller层
UserController .java代码
package com.ikeguang.paging.web;
import com.ikeguang.paging.model.User;
import com.ikeguang.paging.service.UserService;
import org.springframework.data.domain.Page;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import javax.annotation.Resource;
import java.util.Iterator;
/**
* @ Author: keguang
* @ Date: 2019/7/18 10:29
* @ version: v1.0.0
* @ description:
*/
@Controller
public class UserController {
@Resource
UserService userService;
@RequestMapping("/")
public String index() {
return "redirect:/list";
}
@RequestMapping("/list")
public String list(Model model, @RequestParam(value = "pageNum", defaultValue = "0") int pageNum, @RequestParam(value = "pageSize", defaultValue = "2") int pageSize) {
System.out.println("============================");
Page users=userService.getUserList(pageNum, pageSize);
System.out.println("总页数" + users.getTotalPages());
System.out.println("当前页是：" + pageNum);
System.out.println("分页数据：");
Iterator u = users.iterator();
while (u.hasNext()){
System.out.println(u.next().toString());
}
model.addAttribute("users", users);
return "user/list";
}
@RequestMapping("/toAdd")
public String toAdd() {
return "user/userAdd";
}
@RequestMapping("/add")
public String add(User user) {
userService.save(user);
return "redirect:/list";
}
@RequestMapping("/toEdit")
public String toEdit(Model model,Long id) {
User user=userService.findUserById(id);
model.addAttribute("user", user);
return "user/userEdit";
}
@RequestMapping("/edit")
public String edit(User user) {
userService.edit(user);
return "redirect:/list";
}
@RequestMapping("/delete")
public String delete(Long id) {
userService.delete(id);
return "redirect:/list";
}
}
application.properties配置文件
主要配制了mysql数据源，数据库驱动com.mysql.cj.jdbc.Driver，对于mysql-connector-java用的6.0以上的，如果用com.mysql.jdbc.Driver，就会报错。
spring.datasource.url=jdbc:mysql://localhost/test?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC&useSSL=true
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
# 表不存在则新建表
spring.jpa.properties.hibernate.hbm2ddl.auto=update
spring.jpa.properties.hibernate.dialect=com.ikeguang.paging.config.MysqlConfig
spring.jpa.show-sql= true
spring.thymeleaf.cache=false
模板文件
这里用了bootstrap.css里面的样式。这里主要展示一下分页代码，前面的table主要装一个Pageable的N条数据，接着是一个add添加数据的按钮，最下面就是分页部分，主要有5部分：首页，上一页，中间页，下一页，尾页。
userList用户列表
#userNamepassWordemailnickNameregTimeEditDelete
1neoOtto666 edit deleteadd
代码Github
代码的Github地址：代码地址