若依是什么：

若依是一套全部开源的快速开发平台，毫无保留给个人及企业免费使用。而且有前后端分离版和微服务版

如何上手 后端部分：

1.官网下载拉取git项目，也可以直接下载zip压缩包

2.直接导入我们这里后端使用IDEA打开
第一步我们应该新建一个数据库，把这个sql文件导入进去
第二步修改application-druid.yml里面的数据库连接信息
第三步根据自己的配置修改application.yml里面的设置

前端部分

1.也是通过官网进行拉取或者下载zip解压
然后直接启动项目即可，前端项目启动先要使用npm install 初始化

npm install --registry=https://registry.npm.taobao.org

然后前端项目在ruoyi-ui 里面右键使用npm run dev启动项目

后端运行RuoYiApplication

新建自己模版并且完成增删改查

直接看一下效果图
1.首先我们先创建一个科室管理的数据库表：

CREATE TABLE `his_departments` (
  `departments_id` bigint NOT NULL AUTO_INCREMENT COMMENT '科室ID',
  `departments_code` varchar(64) NOT NULL COMMENT '科室编码',
  `departments_name` varchar(50) NOT NULL COMMENT '科室名称',
  `departments_sort` int NOT NULL COMMENT '显示顺序',
  `departments_registration` varchar(50) NOT NULL DEFAULT '0' COMMENT '挂号量',
  `departments_principal` varchar(50) NOT NULL COMMENT '负责人',
  `departments_phone` varchar(50) NOT NULL COMMENT '电话',
  `status` char(1) NOT NULL COMMENT '状态（0正常 1停用）',
  `create_by` varchar(64) DEFAULT '' COMMENT '创建者',
  `create_time` datetime DEFAULT NULL COMMENT '创建时间',
  `update_by` varchar(64) DEFAULT '' COMMENT '更新者',
  `update_time` datetime DEFAULT NULL COMMENT '更新时间',
  `remark` varchar(500) DEFAULT NULL COMMENT '备注',
  PRIMARY KEY (`departments_id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8 COMMENT='信息表';

2.通过若依提供的代码生成器，生成我们的后端代码
3.生成以后把对应的代码放到我们的后端里面
前端部分创建菜单：
可以模仿其他模块如何创建
注意这里的权限标识要和后端controller里面的对应起来
然后是前端部分，我们如何做到呢
首先是页面，我们要根据我们创建的菜单去创建对应的目录，对应的目录里面去创建文件
his/departments/index
然后我们的页面需要发送请求到我们的后端，我们需要编写一个js

直接附上index.vue代码

<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="科室名称" prop="departmentsName">
        <el-input
          v-model="queryParams.departmentsName"
          placeholder="请输入科室名称"
          clearable
          size="small"
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="状态" prop="status">
        <el-select v-model="queryParams.status" placeholder="可用状态" clearable size="small">
          <el-option
            v-for="dict in statusOptions"
            :key="dict.dictValue"
            :label="dict.dictLabel"
            :value="dict.dictValue"
          />
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['his:post:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['his:post:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:post:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['system:post:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="departmentsList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="科室ID" align="center" prop="departmentsId" />
      <el-table-column label="科室名称" align="center" prop="departmentsName" />
      <el-table-column label="科室编码" align="center" prop="departmentsCode" />
      <el-table-column label="当前挂号量" align="center" prop="departmentsRegistration" />
      <el-table-column label="负责人" align="center" prop="departmentsPrincipal" />
      <el-table-column label="电话" align="center" prop="departmentsPhone" />
      <el-table-column label="状态" align="center" prop="status" :formatter="statusFormat" />
      <el-table-column label="创建时间" align="center" prop="createTime" width="180">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.createTime) }}</span>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['his:departments:edit']"
          >修改</el-button>
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['his:departments:remove']"
          >删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改科室对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="科室名称" prop="departmentsName">
          <el-input v-model="form.departmentsName" placeholder="请输入科室名称" />
        </el-form-item>
        <el-form-item label="科室编码" prop="departmentsCode">
          <el-input v-model="form.departmentsCode" placeholder="请输入科室编码" />
        </el-form-item>
         <el-form-item label="负责人" prop="departmentsPrincipal">
          <el-input v-model="form.departmentsPrincipal" placeholder="请输入负责人" />
        </el-form-item>
         <el-form-item label="电话" prop="departmentsPhone">
          <el-input v-model="form.departmentsPhone" placeholder="请输入电话" />
        </el-form-item>
        <el-form-item label="排序码" prop="departmentsSort">
          <el-input-number v-model="form.departmentsSort" controls-position="right" :min="0" />
        </el-form-item>
        <el-form-item label="状态" prop="status">
          <el-radio-group v-model="form.status">
            <el-radio
              v-for="dict in statusOptions"
              :key="dict.dictValue"
              :label="dict.dictValue"
            >{{dict.dictLabel}}</el-radio>
          </el-radio-group>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { listDepartments, getDepartments, delDepartments, addDepartments, updateDepartments, exportPost } from "@/api/his/departments";

export default {
  name: "Post",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 岗位表格数据
      departmentsList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 状态数据字典
      statusOptions: [],
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        departmentsName: undefined,
        status: undefined
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {
        departmentsName: [
          { required: true, message: "科室名称不能为空", trigger: "blur" }
        ],
        departmentsCode: [
          { required: true, message: "科室编码不能为空", trigger: "blur" }
        ],
         departmentsPrincipal: [
          { required: true, message: "负责人不能为空", trigger: "blur" }
        ],
         departmentsPhone: [
          { required: true, message: "电话不能为空", trigger: "blur" }
        ],
        departmentsSort: [
          { required: true, message: "科室顺序不能为空", trigger: "blur" }
        ]
      }
    };
  },
  created() {
    this.getList();
    this.getDicts("sys_normal_disable").then(response => {
      this.statusOptions = response.data;
    });
  },
  methods: {
    /** 查询科室列表 */
    getList() {
      this.loading = true;
      listDepartments(this.queryParams).then(response => {
        this.departmentsList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 岗位状态字典翻译
    statusFormat(row, column) {
      return this.selectDictLabel(this.statusOptions, row.status);
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        departmentsId: undefined,
        departmentsCode: undefined,
        departmentsName: undefined,
        departmentsPrincipal: undefined,
        departmentsPhone: undefined,
        departmentsSort: 0,
        status: "0",
        remark: undefined
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map(item => item.postId)
      this.single = selection.length!=1
      this.multiple = !selection.length
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加科室";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const departmentsId = row.departmentsId || this.ids
      getDepartments(departmentsId).then(response => {
        this.form = response.data;
        this.open = true;
        this.title = "修改科室";
      });
    },
    /** 提交按钮 */
    submitForm: function() {
      this.$refs["form"].validate(valid => {
        if (valid) {
          if (this.form.departmentsId != undefined) {
            updateDepartments(this.form).then(response => {
              this.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addDepartments(this.form).then(response => {
              this.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const departmentsId = row.departmentsId || this.ids
      this.$confirm('是否确认删除科室编号为"' + departmentsId + '"的数据项?', "警告", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }).then(function() {
          return delDepartments(departmentsId);
        }).then(() => {
          this.getList();
          this.msgSuccess("删除成功");
        })
    },
    /** 导出按钮操作 */
    handleExport() {
      const queryParams = this.queryParams;
      this.$confirm('是否确认导出所有科室数据项?', "警告", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }).then(function() {
          return exportPost(queryParams);
        }).then(response => {
          this.download(response.msg);
        })
    }
  }
};
</script>

js代码

import request from '@/utils/request'

// 查询科室列表
export function listDepartments(query) {
  return request({
    url: '/his/departments/list',
    method: 'get',
    params: query
  })
}

// 查询科室详细
export function getDepartments(departmentsId) {
  return request({
    url: '/his/departments/' + departmentsId,
    method: 'get'
  })
}

// 新增岗位
export function addDepartments(data) {
  return request({
    url: '/his/departments',
    method: 'post',
    data: data
  })
}

// 修改科室
export function updateDepartments(data) {
  return request({
    url: '/his/departments',
    method: 'put',
    data: data
  })
}

// 删除科室
export function delDepartments(departmentsId) {
  return request({
    url: '/his/departments/' + departmentsId,
    method: 'delete'
  })
}

// 导出科室
export function exportDepartments(query) {
  return request({
    url: '/his/departments/export',
    method: 'get',
    params: query
  })
}

后端controller代码

package com.ruoyi.project.his.controller;

import java.util.List;

import com.ruoyi.project.his.domain.HisDepartments;
import com.ruoyi.project.his.service.IHisDepartmentsService;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.ruoyi.framework.aspectj.lang.annotation.Log;
import com.ruoyi.framework.aspectj.lang.enums.BusinessType;
import com.ruoyi.framework.web.controller.BaseController;
import com.ruoyi.framework.web.domain.AjaxResult;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.framework.web.page.TableDataInfo;

/**
 * 信息Controller
 * 
 * @author ruoyi
 * @date 2022-08-14
 */
@RestController
@RequestMapping("/his/departments")
public class HisDepartmentsController extends BaseController
{
    @Autowired
    private IHisDepartmentsService hisDepartmentsService;

    /**
     * 查询信息列表
     */
    @PreAuthorize("@ss.hasPermi('his:departments:list')")
    @GetMapping("/list")
    public TableDataInfo list(HisDepartments hisDepartments)
    {
        startPage();
        List<HisDepartments> list = hisDepartmentsService.selectHisDepartmentsList(hisDepartments);
        return getDataTable(list);
    }

    /**
     * 导出信息列表
     */
    @PreAuthorize("@ss.hasPermi('his:departments:export')")
    @Log(title = "信息", businessType = BusinessType.EXPORT)
    @GetMapping("/export")
    public AjaxResult export(HisDepartments hisDepartments)
    {
        List<HisDepartments> list = hisDepartmentsService.selectHisDepartmentsList(hisDepartments);
        ExcelUtil<HisDepartments> util = new ExcelUtil<HisDepartments>(HisDepartments.class);
        return util.exportExcel(list, "departments");
    }

    /**
     * 获取信息详细信息
     */
    @PreAuthorize("@ss.hasPermi('his:departments:query')")
    @GetMapping(value = "/{departmentsId}")
    public AjaxResult getInfo(@PathVariable("departmentsId") Long departmentsId)
    {
        return AjaxResult.success(hisDepartmentsService.selectHisDepartmentsById(departmentsId));
    }

    /**
     * 新增信息
     */
    @PreAuthorize("@ss.hasPermi('his:departments:add')")
    @Log(title = "信息", businessType = BusinessType.INSERT)
    @PostMapping
    public AjaxResult add(@RequestBody HisDepartments hisDepartments)
    {
        return toAjax(hisDepartmentsService.insertHisDepartments(hisDepartments));
    }

    /**
     * 修改信息
     */
    @PreAuthorize("@ss.hasPermi('system:departments:edit')")
    @Log(title = "信息", businessType = BusinessType.UPDATE)
    @PutMapping
    public AjaxResult edit(@RequestBody HisDepartments hisDepartments)
    {
        return toAjax(hisDepartmentsService.updateHisDepartments(hisDepartments));
    }

    /**
     * 删除信息
     */
    @PreAuthorize("@ss.hasPermi('his:departments:remove')")
    @Log(title = "信息", businessType = BusinessType.DELETE)
	@DeleteMapping("/{departmentsIds}")
    public AjaxResult remove(@PathVariable Long[] departmentsIds)
    {
        return toAjax(hisDepartmentsService.deleteHisDepartmentsByIds(departmentsIds));
    }
}