springboot+jpa+thymeleaf 按条件分页
1.添加依赖，pom.xml
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.3.RELEASE
com.qikan
demo
0.0.1-SNAPSHOT
demo
Demo project for Spring Boot
1.8
org.springframework.boot
spring-boot-starter-data-jpa
org.springframework.boot
spring-boot-starter-jdbc
org.springframework.boot
spring-boot-starter-thymeleaf
org.springframework.boot
spring-boot-starter-web
mysql
mysql-connector-java
runtime
org.springframework.boot
spring-boot-starter-test
test
com.github.pagehelper
pagehelper-spring-boot-starter
1.2.5
org.springframework.boot
spring-boot-maven-plugin
2.配置application.yml
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/qikan
username: root
password: 123456
jpa:
open-in-view: false
hibernate:
ddl-auto: update
show-sql: true
thymeleaf:
mode: HTML
encoding: UTF-8
servlet:
content-type: text/html
cache: false
suffix: .html
check-template: false
check-template-location: false
prefix: classpath:/templates/
enabled: true
3.entity实体类，Article，QkInfo
package com.qikan.demo.entity;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class Article {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private String title;
private String authorName;
private String zhaiyao;
private String keywords;
private String pdf;
private String startPage;
private String endPage;
public Integer getQkID() {
return qkID;
}
public void setQkID(Integer qkID) {
this.qkID = qkID;
}
private Integer qkID;//所属的第几期
public String getStartPage() {
return startPage;
}
public void setStartPage(String startPage) {
this.startPage = startPage;
}
public String getEndPage() {
return endPage;
}
public void setEndPage(String endPage) {
this.endPage = endPage;
}
public Article() {
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getAuthorName() {
return authorName;
}
public void setAuthorName(String authorName) {
this.authorName = authorName;
}
public String getZhaiyao() {
return zhaiyao;
}
public void setZhaiyao(String zhaiyao) {
this.zhaiyao = zhaiyao;
}
public String getKeywords() {
return keywords;
}
public void setKeywords(String keywords) {
this.keywords = keywords;
}
public String getPdf() {
return pdf;
}
public void setPdf(String pdf) {
this.pdf = pdf;
}
@Override
public String toString() {
return "Article{" +
"id=" + id +
", title='" + title + '\'' +
", authorName='" + authorName + '\'' +
", zhaiyao='" + zhaiyao + '\'' +
", keywords='" + keywords + '\'' +
", pdf='" + pdf + '\'' +
", startPage='" + startPage + '\'' +
", endPage='" + endPage + '\'' +
", qkID=" + qkID +
'}';
}
}
package com.qikan.demo.entity;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import java.util.Date;
/*期刊信息*/
@Entity
public class QkInfo {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private Date date;//出刊日期
private Integer year;
private Integer djq;//第几期
public QkInfo() {
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public Integer getYear() {
return year;
}
public void setYear(Integer year) {
this.year = year;
}
public Integer getDjq() {
return djq;
}
public void setDjq(Integer djq) {
this.djq = djq;
}
}
4.dao(repository)层
package com.qikan.demo.repository;
import org.springframework.data.domain.Page;
import com.qikan.demo.entity.Article;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import java.util.List;
public interface ArticleRepository extends JpaRepository {
public Page findAllByQkID(Integer qkId, Pageable pageable);
}
package com.qikan.demo.repository;
import com.qikan.demo.entity.QkInfo;
import org.springframework.data.jpa.repository.JpaRepository;
public interface QkInfoRepository extends JpaRepository {
public QkInfo findByYearAndDjq(Integer year,Integer djq);
}
5.controller层
package com.qikan.demo.controller;
import com.qikan.demo.entity.Article;
import com.qikan.demo.entity.Author;
import com.qikan.demo.entity.QkInfo;
import com.qikan.demo.repository.ArticleRepository;
import com.qikan.demo.repository.AuthorRepositoy;
import com.qikan.demo.repository.QkInfoRepository;
import com.qikan.demo.service.ArticleService;
import com.qikan.demo.service.AuthorService;
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.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.List;
@Controller
@RequestMapping
public class AuthorController {
@Autowired
private ArticleRepository articleRepository;
@Autowired
private HttpServletRequest request;
@Autowired
private QkInfoRepository qkInfoRepository;
@RequestMapping(value = "/index")
public ModelAndView index(@RequestParam(value = "start", defaultValue = "0") Integer start,
@RequestParam(value = "limit", defaultValue = "12") Integer limit){
Integer year = Calendar.getInstance().get(Calendar.YEAR);
Integer djq = Calendar.getInstance().get(Calendar.MONTH)+1;
QkInfo qkInfo = qkInfoRepository.findByYearAndDjq(year,djq);
// List list = articleService.findAllArticles(year,month);
start = start < 0 ? 0 : start;
Sort sort = new Sort(Sort.DEFAULT_DIRECTION, "id");
Pageable pageable = PageRequest.of(start, limit, sort);
Page page= articleRepository.findAllByQkID(qkInfo.getId(),pageable);
/*
System.out.println(list.getNumber());
System.out.println(list.getNumberOfElements());
System.out.println(list.getSize());
System.out.println(list.getTotalElements());
System.out.println(list.getTotalPages());
System.out.println(list.isFirst());
System.out.println(list.isLast());*/
ModelAndView mav = new ModelAndView("index");
mav.addObject("page", page);
mav.addObject("year",year);
mav.addObject("djq",djq);
Date date = qkInfo.getDate();
DateFormat dateFormat = DateFormat.getDateInstance();
mav.addObject("date",dateFormat.format(date));
mav.addObject("shang","上一期");
mav.addObject("xia","");
return mav;
}
}
6.界面