2. SpringBoot整合Mybatis分页插件

引入maven依赖

这里注意如果是和springboot整合项目的话，一定要引入springboot依赖，不是独立依赖。

构建三层代码：

1. pojo，dao以及mapper文件。 ``` package com.angyi.pojo;

import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import java.util.Date; // 实体类 @Data @AllArgsConstructor @NoArgsConstructor public class Blog { private Integer id; private String title; private String content; private String first_picture; private String flag; private Integer views; private Integer appreciation; private Integer share_statement; private Integer commentabled; private Integer published; private Integer recommend; private Date create_time; private Date update_time; private Integer type_id; private Integer user_id; private String description; private String tag_ids; }

```
package com.angyi.dao;
import com.angyi.pojo.Blog;
import org.apache.ibatis.annotations.Mapper;
import java.util.List;
//dao接口 注意要配置mapperscan或者这里标明mapper注解
public interface BlogDao {
    List<Blog> getBlogList();
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.angyi.dao.BlogDao">
    <select id="getBlogList" resultType="com.angyi.pojo.Blog">
        select * from t_blog order by id
    </select>
</mapper>

1. service层 接口以及接口实现类

package com.angyi.service;
import com.angyi.pojo.Blog;
import java.util.List;
public interface IndexBlogService {
    public List<Blog> getIndexBlog();
}

  package com.angyi.service.impl;
  import com.angyi.dao.BlogDao;
  import com.angyi.pojo.Blog;
  import com.angyi.service.IndexBlogService;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Service;
  import java.util.List;
  @Service
  public class IndexBlogServiceImpl implements IndexBlogService {
      @Autowired
      BlogDao blogDao;
      @Override
      public List<Blog> getIndexBlog() {
          return blogDao.getBlogList();
      }
  }

1. Controller

package com.angyi.controller;
import com.angyi.pojo.Blog;
import com.angyi.service.IndexBlogService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
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.PathVariable;
import org.springframework.web.bind.annotation.RequestParam;
import java.util.List;
@Controller
public class IndexController {
    @Autowired
    private IndexBlogService indexBlogService;
    @GetMapping("/index")
    public String toIndex(@RequestParam(defaultValue = "1",value = "pageNum") int pageNum , Model model){
        PageHelper.startPage(pageNum,5);
        List<Blog> bloglist = indexBlogService.getIndexBlog();
        //得到分页结果对象
        PageInfo<Blog> pageInfo = new PageInfo<>(bloglist);
        model.addAttribute("pageInfo", pageInfo);
        return "index";
    }
}

1. Thymeleaf index.html

// 页码部分
<nav aria-label="Page navigation example">
    <ul class="pagination justify-content-center">
        <!-- 首页-->
        <li class="page-item" >
            <a class="page-link" aria-label="Previous" th:href="'/index?pageNum=1'">首页
            </a>
        </li>
        <!-- 上一页-->
        <li class="page-item"  th:if="${pageInfo.hasPreviousPage}">
            <a class="page-link" th:href="'/index?pageNum='+${pageInfo.prePage}">
                <i class="ace-icon fa fa-angle-double-left"></i>
            </a>
        </li>
        <li class="page-item" th:each="nav:${pageInfo.navigatepageNums}">
            <a class="page-link" style="font-weight: bold;background: #0da2f012;" th:if="${nav == pageInfo.pageNum}" th:text="${nav}" ></a>
            <a class="page-link" th:href="'/index?pageNum='+${nav}" th:text="${nav}" th:if="${nav != pageInfo.pageNum}">                      </a>
        </li>
        <!--  下一页-->
        <li lass="page-item" th:if="${pageInfo.hasNextPage}">
            <a class="page-link" href="#" aria-label="Next" th:href="'/index?pageNum='+${pageInfo.nextPage}">
                <span aria-hidden="true">&raquo;</span>
            </a>
        </li>
        <!--  最后一页-->
        <li  class="page-item" th:if="${pageInfo.hasNextPage}" >
            <a class="page-link" th:href="'/index?pageNum='+${pageInfo.pages}">尾页</a>
        </li>
    </ul>
</nav>