mybatis实现读取树结构数据详细介绍如下所示：
表结构
CREATE TABLE `lscrm_function_privilege` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '编号', `create_id` varchar(30) NOT NULL DEFAULT 'sys', `update_id` varchar(30) NOT NULL DEFAULT 'sys', `create_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间', `update_time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '修改时间', `validity` tinyint(3) unsigned NOT NULL DEFAULT '1' COMMENT '有效性 1.有效 0. 无效', `code` varchar(50) NOT NULL DEFAULT '' COMMENT '编码', `function_name` varchar(50) NOT NULL DEFAULT '' COMMENT '名称', `parent_id` tinyint(3) unsigned NOT NULL DEFAULT '0' COMMENT '父节点', `is_leaf_node` tinyint(3) unsigned NOT NULL DEFAULT '1' COMMENT '是否叶子节点(叶子结点 就是度为0的结点 就是没有子结点的结点),在添加子节点时,需要将parent_id is_leaf_node 设置成0', `sub_system_id` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '所属子系统', `is_hidden` tinyint(3) unsigned NOT NULL DEFAULT '0' COMMENT 'UI是否隐藏,ui上不展示', PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=22 DEFAULT CHARSET=utf8 COMMENT='子code 按照父code 来创建\r\n如: customer.add';
构造数据
INSERT INTO `lscrm_function_privilege` VALUES ('1', 'sys', 'sys', '2016-09-07 15:20:40', '2016-09-07 15:21:17', '1', 'WEB.PERMISSION', '权限管理', '0', '0', '1', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('2', 'sys', 'sys', '2016-09-07 15:21:12', '2016-09-07 15:21:40', '1', 'WEB.PERMISSION.USER-MGMT', '用户管理', '1', '0', '1', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('3', 'sys', 'sys', '2016-09-07 15:22:16', '2016-09-07 15:22:35', '1', 'WEB.PERMISSION.USER-MGMT.ADD', '新增用户', '2', '1', '1', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('4', 'sys', 'sys', '2016-09-07 15:23:17', '2016-09-07 15:23:17', '1', 'WEB.PERMISSION.USER-MGMT.MODIFY', '修改用户', '2', '1', '1', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('5', 'sys', 'sys', '2016-09-07 16:10:37', '2016-09-07 16:10:42', '1', 'APP.CUSTOMER', '客户管理', '0', '0', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('6', 'sys', 'sys', '2016-09-07 16:11:06', '2016-09-07 16:11:20', '1', 'APP.CUSTOMER.ADD', '添加客户', '5', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('7', 'sys', 'sys', '2016-09-07 16:11:06', '2016-09-07 16:11:20', '1', 'APP.CUSTOMER.MODIFY', '修改客户', '5', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('8', 'sys', 'sys', '2016-09-07 16:12:33', '2016-09-07 16:14:10', '1', 'APP.CUSTOMER.VIEWDETAIL', '查看客户详情', '5', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('9', 'sys', 'sys', '2016-09-07 16:12:33', '2016-09-07 16:12:33', '1', 'APP.CUSTOMER.ADDVISIT', '添加拜访', '5', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('10', 'sys', 'sys', '2016-09-07 16:13:59', '2016-09-07 16:14:17', '1', 'APP.CUSTOMER.VIEWDEMAND', '查看客户采购需求', '5', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('11', 'sys', 'sys', '2016-09-07 16:13:59', '2016-09-07 16:14:17', '1', 'APP.CUSTOMER.VIEWORDER', '查看客户订单', '5', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('12', 'sys', 'sys', '2016-09-07 16:13:59', '2016-09-07 16:14:17', '1', 'APP.CUSTOMER.VIEWSHOP', '查看客户订单', '5', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('13', 'sys', 'sys', '2016-09-07 16:17:28', '2016-09-07 16:18:39', '1', 'APP.CUSTOMER.VIEWREPLY', '查看抢单列表', '5', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('14', 'sys', 'sys', '2016-09-07 16:19:32', '2016-09-07 16:23:51', '1', 'APP.CUSTOMER.FASTOPENSHOP', '快捷开店', '5', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('15', 'sys', 'sys', '2016-09-07 16:22:33', '2016-09-07 16:22:33', '1', 'APP.DEMAND', '需求管理', '0', '0', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('17', 'sys', 'sys', '2016-09-07 16:23:21', '2016-09-07 16:23:21', '1', 'APP.DEMAND.PRIVATE', '私海需求', '15', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('18', 'sys', 'sys', '2016-09-07 16:23:58', '2016-09-07 16:23:58', '1', 'APP.DEMAND.FEEDBACK', '找版反馈', '15', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('19', 'sys', 'sys', '2016-09-07 16:24:47', '2016-09-07 16:24:47', '1', 'APP.DEMAND.PUSHSEARCH', '推送卖家搜索', '15', '1', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('20', 'sys', 'sys', '2016-09-07 16:25:56', '2016-09-07 16:25:56', '1', 'APP.KPI', '绩效管理', '0', '0', '2', '0');
INSERT INTO `lscrm_function_privilege` VALUES ('21', 'sys', 'sys', '2016-09-07 16:27:02', '2016-09-07 16:27:02', '1', 'APP.KPI.VIEWDATA', '查看绩效数据', '20', '1', '2', '0');
实体bean
package com.lianshang.crm.biz.entity;
import com.google.common.base.MoreObjects;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
public class LscrmFunctionPrivilegeEntity {
/**编号**/
private int id;
private String createId;
private String updateId;
/**创建时间**/
private Date createTime;
/**修改时间**/
private Date updateTime=new Date();
/**有效性 1.有效 0. 无效**/
private int validity=1;
/**编码**/
private String code;
/**名称**/
private String functionName;
/**父节点**/
private int parentId;
/**是否叶子节点(叶子结点 就是度为0的结点 就是没有子结点的结点),在添加子节点时,需要将parent_id is_leaf_node 设置成0**/
private int isLeafNode;
/**所属子系统**/
private int subSystemId;
/**UI是否隐藏,ui上不展示**/
private int isHidden=1;
private List<LscrmFunctionPrivilegeEntity> privilegeList = new ArrayList<>();
//get()/set()省略。。。
}
package com.lianshang.crm.biz.entity;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/**
* Created by zhenyu on 2016/9/8.
*/
public class LscrmFunctionPrivilegeTree {
/**编号**/
private int id;
private String createId;
private String updateId;
/**创建时间**/
private Date createTime;
/**修改时间**/
private Date updateTime=new Date();
/**有效性 1.有效 0. 无效**/
private int validity=1;
/**编码**/
private String code;
/**名称**/
private String functionName;
/**父节点**/
private int parentId;
/**是否叶子节点(叶子结点 就是度为0的结点 就是没有子结点的结点),在添加子节点时,需要将parent_id is_leaf_node 设置成0**/
private int isLeafNode;
/**所属子系统**/
private int subSystemId;
/**UI是否隐藏,ui上不展示**/
private int isHidden=1;
private List<LscrmFunctionPrivilegeEntity> privilegeList = new ArrayList<>();
}
mapper配置
<?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="com.lianshang.crm.biz.dao.LscrmFunctionPrivilegeDao">
<cache
eviction="FIFO"
flushInterval="60000"
size="1024"
readOnly="true"/>
<resultMap id="LscrmFunctionPrivilegeResult" type="LscrmFunctionPrivilegeEntity">
<id property="id" column="id"/>
<result property="createId" column="create_id"/>
<result property="updateId" column="update_id"/>
<result property="createTime" column="create_time"/>
<result property="updateTime" column="update_time"/>
<result property="validity" column="validity"/>
<result property="code" column="code"/>
<result property="functionName" column="function_name"/>
<result property="parentId" column="parent_id"/>
<result property="isLeafNode" column="is_leaf_node"/>
<result property="subSystemId" column="sub_system_id"/>
<result property="isHidden" column="is_hidden"/>
</resultMap>
<resultMap id="SubPrivilegesResult" type="LscrmFunctionPrivilegeEntity" extends="LscrmFunctionPrivilegeResult">
<collection property="privilegeList" javaType="java.util.ArrayList" column="id"
ofType="LscrmFunctionPrivilegeEntity" select="selectSubPrivileges"></collection>
</resultMap>
<resultMap id="LscrmFunctionPrivilegeTreeResult" type="LscrmFunctionPrivilegeTree"
extends="SubPrivilegesResult">
<!--<association property="functionPrivilege" column="id" javaType="LscrmFunctionPrivilegeEntity" resultMap="LscrmFunctionPrivilegeResult"/>-->
<collection property="privilegeList" javaType="java.util.ArrayList" column="id"
ofType="LscrmFunctionPrivilegeEntity" select="selectSubPrivileges"></collection>
</resultMap>
<sql id="tbl_name">
lscrm_function_privilege
</sql>
<sql id="role_privilege_tbl_name">
lscrm_role_privilege
</sql>
<sql id="select_sql">
select id, create_id, update_id, create_time, update_time, validity, code, function_name, parent_id,
is_leaf_node, sub_system_id, is_hidden from
<include refid="tbl_name"/>
</sql>
<select id="readAllPrivileges" resultMap="LscrmFunctionPrivilegeTreeResult" useCache="true">
<include refid="select_sql"/>
WHERE parent_id = 0
<if test="subSystemId > 0 ">
AND sub_system_id= #{subSystemId}
</if>
</select>
<select id="selectSubPrivileges" resultMap="SubPrivilegesResult">
<include refid="select_sql"/>
WHERE parent_id = #{id}
</select>
</mapper>
package com.lianshang.crm.biz.dao;
import com.lianshang.crm.api.dto.LscrmFunctionPrivilege;
import com.lianshang.crm.biz.entity.LscrmFunctionPrivilegeEntity;
import com.lianshang.crm.biz.entity.LscrmFunctionPrivilegeTree;
import org.apache.ibatis.annotations.Param;
import java.util.List;
public interface LscrmFunctionPrivilegeDao {
List<LscrmFunctionPrivilegeTree> readAllPrivileges(@Param("subSystemId")int subSystemId);
}
service
package com.lianshang.crm.biz.service.impl;
import com.alibaba.fastjson.JSON;
import com.google.common.base.Function;
import com.lianshang.common.utils.general.GeneralResult;
import com.lianshang.common.utils.general.GuavaUtil;
import com.lianshang.common.utils.general.StringUtil;
import com.lianshang.crm.api.dto.LscrmFunctionPrivilege;
import com.lianshang.crm.api.service.LscrmFunctionPrivilegeService;
import com.lianshang.crm.biz.dao.LscrmFunctionPrivilegeDao;
import com.lianshang.crm.biz.entity.LscrmFunctionPrivilegeEntity;
import com.lianshang.crm.biz.entity.LscrmFunctionPrivilegeTree;
import org.springframework.beans.factory.annotation.Autowired;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import static com.google.common.collect.FluentIterable.from;
public class LscrmFunctionPrivilegeServiceImpl implements LscrmFunctionPrivilegeService {
@Autowired
private LscrmFunctionPrivilegeDao lscrmFunctionPrivilegeDao;
@Override
public GeneralResult<String> readAllPrivileges(int subSystemId) {
List<LscrmFunctionPrivilegeTree> privilegeTrees = lscrmFunctionPrivilegeDao.readAllPrivileges(subSystemId);
return new GeneralResult<>(JSON.toJSONString(privilegeTrees));
}
}
返回结果
[
{
"code": "WEB.PERMISSION",
"createId": "sys",
"createTime": 1473232840000,
"functionName": "权限管理",
"hidden": 0,
"id": 1,
"leafNode": 0,
"parentId": 0,
"privilegeList": [
{
"code": "WEB.PERMISSION.USER-MGMT",
"createId": "sys",
"createTime": 1473232872000,
"functionName": "用户管理",
"hidden": 0,
"id": 2,
"leafNode": 0,
"parentId": 1,
"privilegeList": [
{
"code": "WEB.PERMISSION.USER-MGMT.ADD",
"createId": "sys",
"createTime": 1473232936000,
"functionName": "新增用户",
"hidden": 0,
"id": 3,
"leafNode": 1,
"parentId": 2,
"privilegeList": [],
"subSystemId": 1,
"updateId": "sys",
"updateTime": 1473232955000,
"validity": 1
},
{
"code": "WEB.PERMISSION.USER-MGMT.MODIFY",
"createId": "sys",
"createTime": 1473232997000,
"functionName": "修改用户",
"hidden": 0,
"id": 4,
"leafNode": 1,
"parentId": 2,
"privilegeList": [],
"subSystemId": 1,
"updateId": "sys",
"updateTime": 1473232997000,
"validity": 1
}
],
"subSystemId": 1,
"updateId": "sys",
"updateTime": 1473232900000,
"validity": 1
}
],
"subSystemId": 1,
"updateId": "sys",
"updateTime": 1473232877000,
"validity": 1
}
]
以上所述是小编给大家介绍的mybatis实现读取树结构数据实例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！
