新

ruoyi-modules/ruoyi-student/src/main/java/org/dromara/controller/TeacherController.java

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+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.Teacher;
+import org.dromara.domain.Teacher;
+import org.dromara.mapper.TeacherMapper;
+import org.dromara.service.IClsService;
+import org.dromara.service.ITeacherService;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+
+@RestController
+@RequestMapping("/teacher")
+public class TeacherController {
+
+    @Resource
+    private ITeacherService teacherService;
+
+    /**
+     * 增
+     */
+    @PostMapping("/add")
+    public Result add(@RequestBody Teacher teacher){
+        teacherService.add(teacher);
+        return Result.success();
+    }
+    /**
+     * 改
+     */
+    @PutMapping("/update")
+    public Result update(@RequestBody Teacher teacher){
+        teacherService.update(teacher);
+        return Result.success();
+    }
+
+    /**
+     * 删
+     */
+    @DeleteMapping("/deleteById/{id}")
+    public Result deleteById(@PathVariable Integer id){
+        teacherService.deleteById(id);
+        return Result.success();
+    }
+
+    /**
+     * 查找
+     */
+    @GetMapping("/selectAll")
+    public Result selectAll(Teacher teacher){
+        List<Teacher> list=teacherService.selectAll(teacher);
+        return Result.success(list);
+    }
+    /**
+     * 查询单个数据
+     */
+    @GetMapping("/selectById/{id}")
+    public Result selectById(@PathVariable Integer id){
+        Teacher teacher = teacherService.selectById(id);
+        return Result.success(teacher);
+    }
+
+    @PostMapping("/selectPage")
+    public R<IPage<Teacher>> selectPage(@RequestBody Teacher teacher) {
+        IPage<Teacher> list = teacherService.selectPage(teacher);
+        return R.ok(list);
+    }
+
+}

ruoyi-modules/ruoyi-student/src/main/java/org/dromara/domain/Teacher.java

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+package org.dromara.domain;
+
+import lombok.Data;
+
+@Data
+public class Teacher {
+        private Integer id;
+        private Integer teacherNo;
+        private String name;
+        private Integer age;
+        private String post;
+        private String email;
+        private String avatar;
+        private String clsName;
+        private String sex;
+        private String status;
+        private String remark;
+        private Integer clsId;
+        private Long pageNum;
+        private Long pageSize;
+}

ruoyi-modules/ruoyi-student/src/main/java/org/dromara/mapper/TeacherMapper.java

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+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.Teacher;
+import org.dromara.domain.Teacher;
+import org.dromara.domain.Teacher;
+
+import java.util.List;
+
+public interface TeacherMapper extends BaseMapper<Teacher> {
+
+    List<Teacher> selectAll(Teacher teacher);
+
+    @Select("select * from teacher where id = #{id}")
+    Teacher selectById(Integer id);
+
+    int insert(Teacher teacher);
+
+    int updateById(Teacher teacher);
+
+    @Delete("delete from `teacher` where id = #{id}")
+    void deleteById(Integer id);
+
+    IPage<Teacher> selectPage(@Param("teacher") Teacher teacher, IPage<Teacher> page);
+
+
+}

ruoyi-modules/ruoyi-student/src/main/java/org/dromara/service/ITeacherService.java

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+package org.dromara.service;
+
+import com.baomidou.mybatisplus.core.metadata.IPage;
+import com.baomidou.mybatisplus.extension.service.IService;
+import org.dromara.domain.Teacher;
+import org.dromara.domain.Teacher;
+
+import java.util.List;
+
+/**
+ * 班级业务接口
+ *
+ * @author SkySource
+ * @Date: 2025/8/8 9:18
+ */
+public interface ITeacherService extends IService<Teacher> {
+    void add(Teacher teacher);
+
+    void update(Teacher teacher);
+
+    void deleteById(Integer id);
+
+    List<Teacher> selectAll(Teacher teacher);
+
+    Teacher selectById(Integer id);
+    IPage<Teacher> selectPage(Teacher teacher);
+}

ruoyi-modules/ruoyi-student/src/main/java/org/dromara/service/impl/TeacherService.java

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+package org.dromara.service.impl;
+
+
+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.Teacher;
+import org.dromara.domain.Teacher;
+import org.dromara.domain.Teacher;
+import org.dromara.mapper.TeacherMapper;
+import org.dromara.mapper.TeacherMapper;
+import org.dromara.service.ITeacherService;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Service
+public class TeacherService extends ServiceImpl<TeacherMapper, Teacher> implements ITeacherService {
+
+    @Resource
+    private TeacherMapper teacherMapper;
+
+    @Transactional
+    public void add(Teacher teacher) {
+        teacherMapper.insert(teacher);
+    }
+
+    @Transactional
+    public void update(Teacher teacher){
+        teacherMapper.updateById(teacher);
+    }
+
+    @Transactional
+    public void deleteById(Integer id){
+        teacherMapper.deleteById(id);
+    }
+    @Transactional(readOnly = true)
+    public List<Teacher> selectAll(Teacher teacher){
+        return teacherMapper.selectAll(teacher);
+    }
+    @Transactional(readOnly = true)
+    public Teacher selectById(Integer id){
+         return teacherMapper.selectById(id);
+    }
+    @Override
+    public IPage<Teacher> selectPage(Teacher teacher) {
+        IPage<Teacher> page = new Page<>(teacher.getPageNum(), teacher.getPageSize());
+        return teacherMapper.selectPage(teacher,page);
+    }
+}
+

ruoyi-modules/ruoyi-student/src/main/resources/mapper/system/TeacherMapper.xml

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+<?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="org.dromara.mapper.TeacherMapper">
+    <resultMap id="teacherResultMap" type="org.dromara.domain.Teacher">
+        <id column="id" property="id"/>
+        <result column="name" property="name"/>
+        <result column="cls_name" property="clsName"/>
+    </resultMap>
+
+    <select id="selectAll" resultMap="teacherResultMap" parameterType="org.dromara.domain.Teacher">
+        select teacher.id, teacher.name,teacher.cls_id, cls.name as cls_name
+        from teacher
+        left join cls on teacher.cls_id = cls.id
+        <where>
+            <if test="name != null">teacher.name like concat('%', #{name}, '%')</if>
+        </where>
+        order by teacher.id desc
+    </select>
+
+    <insert id="insert" parameterType="org.dromara.domain.Teacher">
+        insert into `teacher` (name,cls_id)
+        values (#{name},#{clsId})
+    </insert>
+    <update id="updateById" parameterType="org.dromara.domain.Teacher">
+        update `teacher`
+        set name = #{name},
+            cls_id = #{clsId}
+        where id =#{id}
+    </update>
+    <select id="selectPage" resultType="org.dromara.domain.Teacher">
+        select t.id, t.name,t.cls_id, cls.name as clsName
+        from teacher as t
+        left join cls on t.cls_id = cls.id
+        <where>
+            <if test="teacher.name != null">t.name like concat('%', #{teacher.name}, '%')</if>
+        </where>
+        order by t.id desc
+    </select>
+
+</mapper>