怎麼使用SpringBoot+MyBatisPlus+MySQL8實作樹狀結構查詢
- WBOY轉載
- 2023-05-30 18:07:061156瀏覽
場景:
實現權限功能模組時，需要將查詢的權限數據，以樹狀結構的方式傳回給前端。
功能實作:
第一步:權限表結構定義及其功能示範資料。
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',
`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:權限表實體定義及其拓展物件
#基本物件
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;
}
拓展物件
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<baoanprivilege> children;
}</baoanprivilege>
#第三步:權限表Mapper 定義
mapper 介面定義
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<baoanprivilege> {
List<baoanprivilegevo> selectList(Map<string> parameter);
IPage<baoanprivilegevo> selectPage(Page page, @Param("vo")Map<string> parameter);
}</string></baoanprivilegevo></string></baoanprivilegevo></baoanprivilege>
mapper.xml 檔案定義
<?xml version="1.0" encoding="UTF-8"?>
nbsp;mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper>
<resultmap>
<id></id>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
<result></result>
</resultmap>
<resultmap>
<collection oftype="com.zzg.entity.BaoanPrivilege"></collection>
</resultmap>
<sql>
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
</sql>
<sql>
<if>
and baoan_privilege.privilege_type = #{privilegeType}
</if>
<if>
and baoan_privilege.pid = #{pid}
</if>
</sql>
<sql>
<if>
and baoan_privilege.privilege_type = #{vo.privilegeType}
</if>
<if>
and baoan_privilege.pid = #{vo.pid}
</if>
</sql>
<select>
SELECT
<include></include>
FROM baoan_privilege
WHERE pid = #{id}
</select>
<select>
select
<include></include>
FROM baoan_privilege
WHERE 1 = 1
<include></include>
</select>
<select>
select
<include></include>
FROM baoan_privilege
WHERE 1 = 1
<include></include>
</select>
</mapper>
第三步:權限表Service 定義
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<baoanprivilege> {
List<baoanprivilegevo> selectList(Map<string> parameter);
IPage<baoanprivilegevo> selectPage(Page<baoanprivilegevo> page, Map<string> parameter);
}</string></baoanprivilegevo></baoanprivilegevo></string></baoanprivilegevo></baoanprivilege>
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<baoanprivilegemapper> implements BaoanPrivilegeService {
@Autowired
private BaoanPrivilegeMapper mapper;
@Override
public List<baoanprivilegevo> selectList(Map<string> parameter) {
// TODO Auto-generated method stub
return mapper.selectList(parameter);
}
@Override
public IPage<baoanprivilegevo> selectPage(Page<baoanprivilegevo> page, Map<string> parameter) {
// TODO Auto-generated method stub
return mapper.selectPage(page, parameter);
}
}</string></baoanprivilegevo></baoanprivilegevo></string></baoanprivilegevo></baoanprivilegemapper>
第四步:controller 層介面對外提供服務
// 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<string> parame) {
// 动态构建添加参数
// QueryWrapper<baoanprivilegevo> query = new QueryWrapper<baoanprivilegevo>();
// this.buildQuery(parame, query);
PageParame pageParame = this.initPageBounds(parame);
Page<baoanprivilegevo> page = new Page<baoanprivilegevo>(pageParame.getPage(), pageParame.getLimit());
IPage<baoanprivilegevo> list = baoanPrivilegeService.selectPage(page, parame);
return Result.ok().setDatas(list);
}</baoanprivilegevo></baoanprivilegevo></baoanprivilegevo></baoanprivilegevo></baoanprivilegevo></string>
前端效果展示:
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