SpringBoot+MyBatisPlus+MySQL8实现树形结构查询-FinClip官网

SpringBoot+MyBatisPlus+MySQL8实现树形结构查询

网友投稿 1048 2023-01-13

SpringBoot+MyBatisPlus+MySQL8实现树形结构查询

本文实例为大家分享了SpringBoot+MyBatisPlus+mysql8实现树形结构查询，供大家参考，具体内容如下

场景:

今天在实现权限功能模块时，需要将查询的权限数据，以树形结构的方式返回给前端。

功能实现:

第一步:权限表结构定义及其功能演示数据。

DROP TABLE IF EXISTS `baoan_privilege`;

CREATE TABLE `baoan_privilege` (

`id` varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '主键'wMWVCdOuF,

`privilege_name` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '权限名称',

`privilege_code` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '权限编码',

`pid` varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '父Id',

`url` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '菜单路由',

`order_rank` int(3) NULL DEFAULT NULL COMMENT '序号',

`privilege_type` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '权限类型1:项目，2菜单，3按钮',

`privilege_description` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '权限描述',

`state` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT '2' COMMENT '状态(1:禁用,2:启用)',

`created_by` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '创建人',

`created_dt` datetime(0) NULL DEFAULT NULL COMMENT '创建时间',

`version` int(9) NULL DEFAULT 1 COMMENT '版本号',

`updated_by` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '更新人',

`updated_dt` datetime(0) NULL DEFAULT NULL COMMENT '更新时间',

`icon_name` int(15) NULL DEFAULT NULL COMMENT '图标名称',

`delete_flag` int(1) NULL DEFAULT 1 COMMENT '删除标识(1:未删除，2：已删除)',

PRIMARY KEY (`id`) USING BTREE

) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = '权限表' ROW_FORMAT = Dynamic;

-- ----------------------------

-- Records of baoan_privilege

-- ----------------------------

INSERT INTO `baoan_privilege` VALUES ('1', '首页', 'A', '0', NULL, NULL, '1', '首页', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('10', '通知管理', 'F_02', '6', NULL, NULL, '2', '通知管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('11', '操作日志', 'F_03', '6', NULL, NULL, '2', '操作日志', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('12', '角色管理', 'F_04', '6', NULL, NULL, '2', '角色管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('13', '存储管理', 'F_05', '6', NULL, NULL, '2', '存储管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('14', '权限管理', 'F_06', '6', NULL, NULL, '2', '权限管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('15', '新增', 'F_01_add', '9', NULL, NULL, '3', '管理员新增', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('16', '修改', 'F_01_update', '9', NULL, NULL, '3', '管理员修改', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('17', '查询', 'F_01_search', '9', NULL, NULL, '3', '管理员查询', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('18', '删除', 'F_01_delete', '9', NULL, NULL, '3', '管理员删除', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('19', '导出', 'F_01_export', '9', NULL, NULL, '3', '管理员导出', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('2', '用户管理', 'B', '0', NULL, NULL, '1', '用户管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('3', '商场管理', 'C', '0', NULL, NULL, '1', '商场管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('4', '商品管理', 'D', '0', NULL, NULL, '1', '商品管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('5', '推广管理', 'E', '0', NULL, NULL, '1', '推广管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('6', '系统管理', 'F', '0', NULL, NULL, '1', '系统管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('7', '配置管理', 'G', '0', NULL, NULL, '1', '配置管理', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('8', '统计报表', 'H', '0', NULL, NULL, '1', '统计报表', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

INSERT INTO `baoan_privilege` VALUES ('9', '管理员', 'F_01', '6', NULL, NULL, '2', '管理员', '2', NULL, NULL, 1, NULL, NULL, NULL, 1);

第二步:权限表实体定义及其拓展对象

基本对象

package com.zzg.entity;

import java.io.Serializable;

import java.util.Date;

import com.baomidou.mybatisplus.annotation.TableName;

import lombok.Data;

@SuppressWarnings("serial")

@TableName(value = "baoan_privilege")

@Data

public class BaoanPrivilege implements Serializable {

private String id;

private String privilegeName;

private String privilegeCode;

private String pid;

private String url;

private Integer orderRank;

private String privilegeType;

private String privilegeDescription;

private String state;

private String createdBy;

private Date createdDt;

private Integer version;

private String updatedBy;

private Date updatedDt;

private Integer iconName;

private Integer deleteFlag;

}

拓展对象

package com.zzg.vo;

import java.util.List;

import com.zzg.entity.BaoanPrivilege;

import lombok.Data;

@SuppressWarnings("serial")

@Data

public class BaoanPrivilegeVo extends BaoanPrivilege {

private List children;

}

第三步:权限表Mapper 定义

mapper 接口定义

package com.zzg.mapper;

import java.util.List;

import java.util.Map;

import org.apache.ibatis.annotations.Param;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;

import com.baomidou.mybatisplus.core.metadata.IPage;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import com.zzg.entity.BaoanPrivilege;

import com.zzg.vo.BaoanPrivilegeVo;

public interface BaoanPrivilegeMapper extends BaseMapper {

List selectList(Map parameter);

IPage selectPage(Page page, @Param("vo")Map parameter);

}

mapper.xml 文件定义

ofType="com.zzg.entity.BaoanPrivilege" select="getNextNodeTree"/>

id, privilege_name, privilege_code, pid, url, order_rank, privilege_type, privilege_description,

state, created_by, created_dt, version, updated_by, updated_dt, icon_name, delete_flag

and baoan_privilege.privilege_type = #{privilegeType}

and baoan_privilege.pid = #{pid}

and baoan_privilege.privilege_type = #{vo.privilegeType}

and baoan_privilege.pid = #{vo.pid}

SELECT

FROM baoan_privilege

WHERE pid = #{id}

select

FROM baoan_privilege

WHERE 1 = 1

select

FROM baoan_privilege

WHERE 1 = 1

第三步:权限表Service 定义

package com.zzg.service;

import java.util.List;

import java.util.Map;

import com.baomidou.mybatisplus.core.metadata.IPage;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import com.baomidou.mybatisplus.extension.service.IService;

import com.zzg.entity.BaoanPrivilege;

import com.zzg.vo.BaoanPrivilegeVo;

public interface BaoanPrivilegeService extends IService {

List selectList(Map parameter);

IPage selectPage(Page page, Map parameter);

}

package com.zzg.service.impl;

import java.util.List;

import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import com.baomidou.mybatisplus.core.metadata.IPage;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.zzg.entity.BaoanPrivilege;

import com.zzg.mapper.BaoanPrivilegeMapper;

import com.zzg.service.BaoanPrivilegeService;

import com.zzg.vo.BaoanPrivilegeVo;

@Service

public class BaoanPrivilegeServiceImpl extends ServiceImpl implements BaoanPrivilegeService {

@Autowired

private BaoanPrivilegeMapper mapper;

@Override

public List selectList(Map parameter) {

// TODO Auto-generated method stub

return mapper.selectList(parameter);

}

@Override

public IPage selectPage(Page page, Map parameter) {

// TODO Auto-generated method stub

return mapper.selectPage(page, parameter);

}

第四步:controller 层接口对外提供服务

// 查

@ApiOperation(httpMethod = "POST", value = "基于分页查询符合条件权限记录")

@RequestMapping(value = "/getPage", method = { RequestMethod.POST })

@ApiImplicitParams({

@ApiImplicitParam(name = "username", value = "管理员名称", required = false, dataType = "String", paramType = "query") })

public Result getPage(@RequestBody Map parame) {http://

// 动态构建添加参数

// QueryWrapper query = new QueryWrapper();

// this.buildQuery(parame, query);

PageParame pageParame = this.initPageBounds(parame);

Page page = new Page(pageParame.getPage(), pageParame.getLimit());

IPage list = baoanPrivilegeService.selectPage(page, parame);

return Result.ok().setDatas(list);

}

前端效果展示:

ofType="com.zzg.entity.BaoanPrivilege" select="getNextNodeTree"/>

id, privilege_name, privilege_code, pid, url, order_rank, privilege_type, privilege_description,

state, created_by, created_dt, version, updated_by, updated_dt, icon_name, delete_flag

and baoan_privilege.privilege_type = #{privilegeType}

and baoan_privilege.pid = #{pid}

and baoan_privilege.privilege_type = #{vo.privilegeType}

and baoan_privilege.pid = #{vo.pid}

SELECT

FROM baoan_privilege

WHERE pid = #{id}

select

FROM baoan_privilege

WHERE 1 = 1

select

FROM baoan_privilege

WHERE 1 = 1

第三步:权限表Service 定义

package com.zzg.service;

import java.util.List;

import java.util.Map;

import com.baomidou.mybatisplus.core.metadata.IPage;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import com.baomidou.mybatisplus.extension.service.IService;

import com.zzg.entity.BaoanPrivilege;

import com.zzg.vo.BaoanPrivilegeVo;

public interface BaoanPrivilegeService extends IService {

List selectList(Map parameter);

IPage selectPage(Page page, Map parameter);

}

package com.zzg.service.impl;

import java.util.List;

import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import com.baomidou.mybatisplus.core.metadata.IPage;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.zzg.entity.BaoanPrivilege;

import com.zzg.mapper.BaoanPrivilegeMapper;

import com.zzg.service.BaoanPrivilegeService;

import com.zzg.vo.BaoanPrivilegeVo;

@Service

public class BaoanPrivilegeServiceImpl extends ServiceImpl implements BaoanPrivilegeService {

@Autowired

private BaoanPrivilegeMapper mapper;

@Override

public List selectList(Map parameter) {

// TODO Auto-generated method stub

return mapper.selectList(parameter);

}

@Override

public IPage selectPage(Page page, Map parameter) {

// TODO Auto-generated method stub

return mapper.selectPage(page, parameter);

}

第四步:controller 层接口对外提供服务

// 查

@ApiOperation(httpMethod = "POST", value = "基于分页查询符合条件权限记录")

@RequestMapping(value = "/getPage", method = { RequestMethod.POST })

@ApiImplicitParams({

@ApiImplicitParam(name = "username", value = "管理员名称", required = false, dataType = "String", paramType = "query") })

public Result getPage(@RequestBody Map parame) {http://

// 动态构建添加参数

// QueryWrapper query = new QueryWrapper();

// this.buildQuery(parame, query);

PageParame pageParame = this.initPageBounds(parame);

Page page = new Page(pageParame.getPage(), pageParame.getLimit());

IPage list = baoanPrivilegeService.selectPage(page, parame);

return Result.ok().setDatas(list);

}

前端效果展示:

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SpringBoot+MyBatisPlus+MySQL8实现树形结构查询

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