spring boot +mybatis分页查询

这是spring boot集合mybatis的分页查询。

pom依赖：

		<!-- 分页插件 -->
		<dependency>
		    <groupId>com.github.pagehelper</groupId>
		    <artifactId>pagehelper</artifactId>
		    <version>4.1.0</version>
		</dependency>

　往spring容器注入一个Bean,写在main方法下面就行，或者另外写个类，加上注解@Configuration，被spring boot容器扫描到就行:

	    @Bean
	    public PageHelper pageHelper() {
	        PageHelper pageHelper = new PageHelper();
	        Properties p = new Properties();
	        p.setProperty("offsetAsPageNum", "true");
	        p.setProperty("rowBoundsWithCount", "true");
	        p.setProperty("reasonable", "true");
	        p.setProperty("dialect", "mysql");
	        p.setProperty("supportMethodsArguments", "false");
	         p.setProperty("pageSizeZero", "true");
	        pageHelper.setProperties(p);
	        return pageHelper;
	    }

　　

　创建一个抽象类，分页类需要继承这个抽象类AbstractPageForm。

import java.io.Serializable;
 
import com.github.pagehelper.PageHelper;
 
public abstract class AbstractPageForm<T extends AbstractPageForm<T>> implements Serializable {
 
    private static final long serialVersionUID = 1L;
 
    /**
     * @Description 页码为首页
     */
    protected int pageNum = 1;
 
    /**
     * @Description 每页显示数量，默认为10
     */
    protected int pageSize = 10;
 
    public int getPageNum() {
        return pageNum;
    }
 
    public void setPageNum(int pageNum) {
        this.pageNum = pageNum;
    }
 
    public int getPageSize() {
        return pageSize;
    }
 
    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
 
    /**
     * @Title enablePaging
     * @Description 启用分页
     * @return
     */
    @SuppressWarnings("unchecked")
    public final T enablePaging() {
        PageHelper.startPage(pageNum, pageSize);
        return (T) this;
    }
 
}

　　写一个分页类，继承上面个抽象类

import *.AbstractPageForm;//换成自己的包
 
public class TestPage extends AbstractPageForm<TestPage>{
 
	/**
	 *
	 */
	private static final long serialVersionUID = 1L;
 
}

　　查询方法：

	public PageInfo selectAll() {
		TestPage TestPage = new TestnPage();
		List<Test> selectAll = TestMapper.selectAll(TestPage.enablePaging());
		PageInfo<Test> pageInfo = new PageInfo<>(selectAll);
		return pageInfo;
	}