部门管理的树展示和搜索
数据展示页是个树,我们一次性把数据加载出来也可以通过点一次id加载查询出来出来子部门,我们用一次拿到说有json数据加载出来
数据不多可以用递归,数据很多就用懒加载的方式
由于子部门比较深就不适合,权限组角色之间下展示菜单那样
编写后端接口
DepartmentController
@RestController
@RequestMapping("/system/basic/department")
public class DepartmentController {@AutowiredDepartmentService departmentService;@GetMapping("/")public List<Department> getAllDepartments(){return departmentService.getAllDepartments();}
}
DepartmentService
@Service
public class DepartmentService {@AutowiredDepartmentMapper departmentMapper;public List<Department> getAllDepartments() {//传递-1直接查询最顶级的股东会然后根据mybatis语句进行递归return departmentMapper.getAllDepartmentsByParentId(-1);}
}
DepartmentMapper
<resultMap id="DepartmentWithChildren" type="com.xyg.pojo.Department" extends="BaseResultMap"> <!--当查询的时候会以children属性会调用select把当前id传进去,然后新查询的同会继续调用,形成一个递归--><collection property="children" ofType="com.xyg.pojo.Department" select="com.xyg.mapper.DepartmentMapper.getAllDepartmentsByParentId" column="id" ></collection></resultMap><select id="getAllDepartmentsByParentId" resultMap="DepartmentWithChildren">select * from department where parentid = #{pid}</select>
实体类添加一个children字段一对多
测试
前端编写
添加elementui 组件
DemMarna.vue
<div style="width: 500px"><el-inputprefix-icon="el-icon-search"placeholder="输入部门名称进行搜索"v-model="filterText"> </el-input><el-tree:data="deps":props="defaultProps"default-expand-all:filter-node-method="filterNode" //过滤的方法ref="tree"></el-tree>
</div>
data(){return{filterText:"",deps:[],defaultProps: {children: 'children',label: 'name'}}},
mounted(){this.getDeps()},methods: {getDeps(){this.getRequest("/system/basic/department/").then(resp=>{if(resp){this.deps=resp}})},
数据展示效果
前端查询过滤
filterNode(value, data) {//过滤的方法,value传过来的最新值,data的Json数组得出每一项,if (!value) return true; //进行比较,如果value不存在的话直接返回true,表示当前的data留着,否则剔除掉return data.name.indexOf(value) !== -1;//ata.name是否包含这个值,如果不等于-1就返回值这个值}watch: { //监控filterText值发生变化filterText(val) {this.$refs.tree.filter(val);//会触发这个方法}},
总之就是监听输入框绑定的变量进行监听是否有变化,触发filter方法,
通过方法实现前端查询
部门树展示添加与删除
使用这个
粘贴到树组件里
用这个方法即可解决 :expand-on-click-node=“false” 是否在点击节点的时候展开或者收缩节点, 默认值为 true,如果为 false,则只有点箭头图标的时候才会展开或者收缩节点。
<!-- :expand-on-click-node="false" 是否在点击节点的时候展开或者收缩节点, 默认值为 true,如果为 false,则只有点箭头图标的时候才会展开或者收缩节点。--><el-tree:data="deps"node-key="id":props="defaultProps":expand-on-click-node="false":filter-node-method="filterNode"ref="tree"><!--slot-scope="{ node, data } node指当前的元素( :props="defaultProps"),data值得到就是服务端返回的json对象--><span class="custom-tree-node" style="display: flex; justify-content: space-between; width: 100%" slot-scope="{ node, data }"><span>{{ data.name }}</span><span><el-buttonclass="depBtn"type="primary"size="mini"@click="() => showAddDep(data)">添加部门</el-button><el-buttonclass="depBtn"type="danger"size="mini"@click="() => delDeps(node, data)">删除部门</el-button></span></span></el-tree>
</div>
效果
后端部门树的添加
如果在董事会上点添加部门就是董事会的子部门,所以要传的参数一个是父部门的id,一个添加的部门名字
第一步做添加操作把name,和partentid字段加进来,id会自动生成
第二步就要去根据生成的id,查询到他partentid生成组成自己的depPath, 第三步 isParent没有子部门为flash,有了自己的子部门就为true
这个 不难,写service加事务分三步
DepartmentController
@PostMapping("/")public RespBean AddDep(@RequestBody Department department) {if(department.getName()!=""){Department department1 = departmentService.AddDep(department);if (department1 != null) {return RespBean.ok("添加成功",department1);}}return RespBean.err("添加失败");}
DepartmentService
@Transactionalpublic Department AddDep(Department department) {//第一步做添加操作把name,和partentid字段加进来,id会自动生成,数据库返回新增的iddepartmentMapper.insertDep(department);//第二步就要去根据生成的id,查询到他partentid生成组成自己的depPath,//根据id查询出自己的对象Department dep = departmentMapper.selectByPrimaryKey(department.getId());//获取当前对象父id的对象Department parDep = departmentMapper.selectParentDepath(dep.getParentid());//获取父id的deppath加自己的id,生成自己DeppathString Deppath=parDep.getDeppath()+'.'+department.getId();if (Deppath.toString().startsWith("null")){throw new RuntimeException("操作错误");}//设置自己Deppathdepartment.setDeppath(Deppath);//设自己是可启用department.setEnabled(true);//设置自己刚添加是没有子部门department.setIsparent(false);//进行更新操作departmentMapper.updateByPrimaryKey(department);//如果有新数据进行添加如果有父部门,都把父部门的Isparent 更新为 trueDepartment department1 = departmentMapper.selectByPrimaryKey(department.getParentid());department1.setIsparent(true);departmentMapper.updateByPrimaryKey(department1);return departmentMapper.selectByPrimaryKey(department.getId());}
DepartmentMapper
mapper就只编写这一个接口,其它都是存在的
int insertDep(Department record);
<!--useGeneratedKeys="true" keyProperty="id" 实现id回调,获取插入数据库的id--><insert id="insertDep" parameterType="com.xyg.pojo.Department" useGeneratedKeys="true" keyProperty="id" >insert into department (id, name, parentId,depPath, enabled, isParent)values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{parentid,jdbcType=INTEGER},#{deppath,jdbcType=VARCHAR}, #{enabled,jdbcType=BIT}, #{isparent,jdbcType=BIT})</insert>
前端对接
当点击添加的时候应该弹出输入框
<el-dialogtitle="添加部门":visible.sync="dialogVisible"width="30%"><div><el-tag size="small">上级部门</el-tag><span >{{this.parDep.name}}</span></div><div style="margin-top: 8px"><el-tag size="small">部门名称</el-tag><el-input size="mini" v-model="chalDep.name" placeholder="请输入部门名称" style="width: 200px"></el-input></div><span slot="footer" class="dialog-footer"><el-button @click="cannelChal">取 消</el-button><el-button type="primary" @click="chalAdd">确 定</el-button></span></el-dialog>
showAddDep(data){console.log(data)this.dialogVisible=truethis.parDep=datathis.chalDep.parentid=data.id},
#接口对接
cannelChal(){this.dialogVisible=false;this.chalDep.name=""},chalAdd(){this.postRequest("/system/basic/department/",this.chalDep).then(resp=>{if (resp){this.getDeps()this.chalDep.name=""this.dialogVisible=false}})},
后端部门的删除
DepartmentController
@DeleteMapping("/{id}")public RespBean delDep(@PathVariable Integer id){if(departmentService.delDep(id)==1){return RespBean.ok("删除成功");}return RespBean.err("删除失败");}
DepartmentService
public Integer delDep(Integer id) {return departmentMapper.delDep(id);}
DepartmentMapper
Integer delDep(Integer id) ;
<delete id="delDep" >delete from department where id=#{id}</delete>
前端对接
delDeps(node,data){this.$confirm('此操作将永久删除, 是否继续?', '提示', {confirmButtonText: '确定',cancelButtonText: '取消',type: 'warning'}).then(() => {this.deleteRequest("/system/basic/department/"+data.id).then(resp=>{if(resp){this.getDeps()}})}).catch(() => {this.$message({type: 'info',message: '已取消删除'});});},getDeps(){this.getRequest("/system/basic/department/").then(resp=>{if(resp){this.deps=resp}})},filterNode(value, data) {//过滤的方法,value传过来的最新值,data的Json数组得出每一项,if (!value) return true; //进行比较,如果value不存在的话直接返回true,表示当前的data留着,否则剔除掉return data.name.indexOf(value) !== -1;//ata.name是否包含这个值,如果不等于-1就返回值这个值}},watch: { //监控filterText值发生变化filterText(val) {this.$refs.tree.filter(val);//会触发这个方法}},
解决树组件添加和删除收缩问题
element-ui中的el-tree在添加或者删除子节点后,也就是每次数据刷新后树就会收上去,但是如果我们还需要在当前节点下进行后续操作,而且有很多层节点的情况下,就很麻烦了,对用户体验感非常差,那么怎么解决呢?
解决办法:定义一个数组,然后点击树节点时,保存下来,存进数据内,刷新后树之前展开的节点就能还是展开的状态。
handleNodeClick(data) {this.defaultExpandKeys.push(data.id) ;//记录当前点击节点,并赋值给默认展开的节点的 key 的数组},