Training/RuoYi-Vue-Plus
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This commit is contained in:
Asriya
2025-08-21 09:43:39 +08:00
parent e7773502dd
commit f58cba4a9a
9 changed files with 54 additions and 14 deletions
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11
ruoyi-modules/ruoyi-student/src/main/java/org/dromara/controller/ClsController.java
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@@ -1,7 +1,10 @@
package org.dromara.controller;
import com.baomidou.mybatisplus.core.metadata.IPage;
import jakarta.annotation.Resource;
import org.dromara.common.Result;
import org.dromara.common.core.domain.R;
import org.dromara.domain.Cls;
import org.dromara.domain.Cls;
import org.dromara.service.IClsService;
import org.springframework.web.bind.annotation.*;
@@ -65,4 +68,12 @@ public class ClsController {
clsService.deleteById(id);
return Result.success();
}
/**
* 分页查询
*/
@PostMapping("/selectPage")
public R<IPage<Cls>> selectPage(@RequestBody Cls cls) {
IPage<Cls> list = clsService.selectPage(cls);
return R.ok(list);
}
}

3
ruoyi-modules/ruoyi-student/src/main/java/org/dromara/domain/Cls.java
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@@ -6,5 +6,8 @@ import lombok.Data;
public class Cls {
private Integer id;
private String name;
private Integer num;
private Integer pageNum;
private Integer pageSize;
}

2
ruoyi-modules/ruoyi-student/src/main/java/org/dromara/domain/Student.java
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@@ -15,7 +15,7 @@ public class Student {
private Integer clsId;
private Integer courseId;
private String clsName;
private String avatar;
private Integer pageNum;
private Integer pageSize;
}

8
ruoyi-modules/ruoyi-student/src/main/java/org/dromara/mapper/ClsMapper.java
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@@ -1,9 +1,12 @@
package org.dromara.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.dromara.domain.Cls;
import org.dromara.domain.Cls;
import java.util.List;
@@ -11,13 +14,12 @@ public interface ClsMapper extends BaseMapper<Cls> {
List<Cls> selectAll(Cls cls);
@Select("select * from cls where id = #{id}")
Cls selectById(Integer id);
int insert(Cls cls);
int updateById(Cls cls);
@Delete("delete from `cls` where id = #{id}")
void deleteById(Integer id);
@Select("select * from cls where username = #{username}")
Cls selectByUsername(String username);
IPage<Cls> selectPage(@Param("cls") Cls cls, IPage<Cls> page);
}

4
ruoyi-modules/ruoyi-student/src/main/java/org/dromara/service/IClsService.java
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@@ -1,7 +1,10 @@
package org.dromara.service;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.IService;
import org.dromara.domain.Cls;
import org.dromara.domain.Cls;
import java.util.List;
@@ -22,4 +25,5 @@ public interface IClsService extends IService<Cls> {
Cls selectById( Integer id);
IPage<Cls> selectPage(Cls cls);
}

12
ruoyi-modules/ruoyi-student/src/main/java/org/dromara/service/impl/ClsService.java
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@@ -1,20 +1,18 @@
package org.dromara.service.impl;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import jakarta.annotation.Resource;
import org.dromara.domain.Cls;
import org.dromara.domain.Student;
import org.dromara.mapper.ClsMapper;
import org.dromara.mapper.StudentMapper;
import org.dromara.service.IClsService;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
@Service
public class ClsService extends ServiceImpl<ClsMapper, Cls> implements IClsService {
@@ -48,6 +46,12 @@ public class ClsService extends ServiceImpl<ClsMapper, Cls> implements IClsServi
public Cls selectById(Integer id) {
return clsMapper.selectById(id);
}
@Override
public IPage<Cls> selectPage(Cls cls) {
IPage<Cls> page = new Page<>(cls.getPageNum(), cls.getPageSize());
return clsMapper.selectPage(cls,page);
}
}

2
ruoyi-modules/ruoyi-student/src/main/java/org/dromara/service/impl/StudentService.java
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@@ -1,6 +1,5 @@
package org.dromara.service.impl;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import jakarta.annotation.Resource;
@@ -11,6 +10,7 @@ import org.dromara.service.IStudentService;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
@Service
public class StudentService implements IStudentService {

21
ruoyi-modules/ruoyi-student/src/main/resources/mapper/system/ClsMapper.xml
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@@ -4,12 +4,14 @@
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="org.dromara.mapper.ClsMapper">
<select id="selectAll" resultType="org.dromara.domain.Cls" parameterType="org.dromara.domain.Cls">
select *
select cls.id, cls.name,count(s.id) num
from cls
left join student s on cls.id = s.cls_id
<where>
<if test="name != null">name like concat('%', #{name}, '%')</if>
<if test="name != null">cls.name like concat('%', #{name}, '%')</if>
</where>
order by id desc
group by cls.id,cls.name
order by cls.id desc
</select>
<insert id="insert" parameterType="org.dromara.domain.Cls">
insert into `cls` (name)
@@ -21,4 +23,17 @@
set name= #{name}
where id = #{id}
</update>
<select id="selectPage" resultType="org.dromara.domain.Cls">
select c.id,
c.name,
count(1) num
from cls as c
left join student as s on s.cls_id = c.id
<where>
<if test="cls.name != null">c.name like concat('%', #{cls.name}, '%')</if>
</where>
group by c.id ,c.name
order by c.id desc
</select>
</mapper>

5
ruoyi-modules/ruoyi-student/src/main/resources/mapper/system/StudentMapper.xml
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@@ -48,8 +48,8 @@
</select>
<insert id="insert" parameterType="org.dromara.domain.Student">
insert into `student` (username, password, role, name, age, sex, address, cls_id, course_id)
values (#{username}, #{password}, #{role}, #{name}, #{age}, #{sex}, #{address}, #{clsId}, #{courseId})
insert into `student` (username, password, role, name, age, sex, avatar,address, cls_id, course_id)
values (#{username}, #{password}, #{role}, #{name}, #{age}, #{sex},#{avatar}, #{address}, #{clsId}, #{courseId})
</insert>
<update id="updateById" parameterType="org.dromara.domain.Student">
@@ -60,6 +60,7 @@
name= #{name},
age= #{age},
sex= #{sex},
avatar= #{avatar},
address= #{address},
cls_id= #{clsId},
course_id= #{courseId}