左侧thymeleaf动态绑定li，右侧layuitable

　　pom.xml 添加pagehelper 依赖             com.github.pagehelper       pagehelper       5.3.0     
　　MyBatisConfig 添加 注解 （ssm java类注解，可以看我前面的文章） @Bean     public PageHelper pageHelper(){         //分页插件         PageHelper pageHelper = new PageHelper();         Properties properties = new Properties();         properties.setProperty(＂helperDialect＂, ＂mysql＂);         properties.setProperty(＂reasonable＂, ＂true＂);         pageHelper.setProperties(properties);         return pageHelper;      }
　　实体类 subject:package com.pojo;  public class Subject {     private Integer id;     private String sname;     private Integer gradelevel;      public Integer getId() {         return id;     }      public void setId(Integer id) {         this.id = id;     }      public String getSname() {         return sname;     }      public void setSname(String sname) {         this.sname = sname;     }      public Integer getGradelevel() {         return gradelevel;     }      public void setGradelevel(Integer gradelevel) {         this.gradelevel = gradelevel;     } }
　　实体类:Gradepackage com.pojo;  public class Grade {     private Integer id;     private String gname;      public Integer getId() {         return id;     }      public void setId(Integer id) {         this.id = id;     }      public String getGname() {         return gname;     }      public void setGname(String gname) {         this.gname = gname;     } }
　　数据层接口: GradeMapper 和SubjectMapperpublic interface GradeMapper {     @Select(＂select * from grade＂)     public List getAll(); } public interface SubjectMapper {     @Select(＂select * from subject＂)     public ListfindAlls();     @Select({         ＂＂     })     public ListFy(@Param(＂page＂) Integer page,                            @Param(＂limit＂)Integer limit,@Param(＂gradelevel＂) int gradelevel);     }
　　GradeServiceImpl 和SubjectServiceImpl 实现接口（service 层的接口就不赘述了，把mapper的接口复制粘贴即可，顺便把@Param() 这玩意干掉）@Service public class GradeServiceImpl implements GradeService {     @Autowired     private GradeMapper mapper;     @Override     public List getAll() {         return mapper.getAll();     } }package com.service.impl;  import com.mapper.SubjectMapper; import com.pojo.Subject; import com.service.SubjectService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;  import java.util.List; @Service public class SubjectServiceImpl implements SubjectService {     @Autowired     private SubjectMapper mapper;      @Override     public List findAlls() {         return mapper.findAlls();     }      @Override     public List Fy(Integer page, Integer limit,int id) {         return mapper.Fy(page,limit, id);     } }
　　Controller 控制器层 （thymeleaf 模板引擎这些，可以看前面的文章）@Controller public class SubjectController {     @Autowired     private SubjectService service;     @Autowired     private GradeService gservice;     @GetMapping(＂/subjectshow＂)     public String subjectshow(HttpSession session){         List all = gservice.getAll();         session.setAttribute(＂all＂, all);         return ＂views/subjectshow.htm＂;     }     @GetMapping(＂/subjectshows＂)     @ResponseBody     public Object subjectshows(Integer page,Integer limit,String id){         PageHelper.startPage(page,limit);         List all=service.findAlls();//得到所有         PageInfo pageInfo=new PageInfo(all);         int ids=Integer.parseInt(id)>0?Integer.parseInt(id):0;         List list = service.Fy((page-1)*limit, limit,ids);         int count=(int)pageInfo.getTotal();//得到总条数         String str= ConvertUtil.ConvertPageJson(list,count);         JSONObject object = JSON.parseObject(str);         return object;     } }
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