java多条件分页查询

java多条件分页查询

引入mybatis-plus插件

<!--mybatis-plus-->
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>

配置分页插件

建立vo实体类

过程图解

代码

	@GetMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable long current,
                                  @PathVariable long limit,
                                  @RequestBody(required = false) TeacherQuery teacherQuery){

        Page<EduTeacher> page = new Page<>(current,limit);
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        if (!StringUtils.isEmpty(name)){
            wrapper.like("name",name);
        }
        if (!StringUtils.isEmpty(level)){
            wrapper.eq("level",level);
        }
        if (!StringUtils.isEmpty(begin)){
            wrapper.ge("gmt_create",begin);
        }
        if (!StringUtils.isEmpty(end)){
            wrapper.le("gmt_modified",end);
        }
        eduTeacherService.page(page,wrapper);
        long total = page.getTotal();
        List<EduTeacher> records = page.getRecords();
        Map map = new HashMap();
        map.put("total",total);
        map.put("rows",records);
        return R.ok().data(map);
    }