四、Springboot+jpa+mycat应用

一、后台配置文件

    # 连接地址
    url: jdbc:mysql://127.0.0.1:8066/CHUNK?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT%2B8&rewriteBatchedStatements=true
    # 用户名
    username: root
    # 密码
    password: bluetooth@wy2019

8066：mycat默认端口

root：mycat配置文件设置、

password：mycat配置文件配置

二、mycat配置

2.1 schema.xml配置

xml version="1.0"?>
DOCTYPE mycat:schema SYSTEM "schema.dtd">
<mycat:schema xmlns:mycat="http://io.mycat/">

      
    <schema name="CHUNK" checkSQLschema="false" sqlMaxLimit="10000">
          
        <table name="cn_chunk" primaryKey="id" autoIncrement="true" dataNode="dn01,dn02,dn03" rule="rule1">
        <childTable name="cn_chunk_lockset" primaryKey="id" joinKey="chunkId" parentKey="id" />table>
    schema>
    
      
      
      
      
      
    <dataNode name="dn01" dataHost="localhost" database="chunk001" />
    <dataNode name="dn02" dataHost="localhost" database="chunk002" />
    <dataNode name="dn03" dataHost="localhost" database="chunk003" />
    
      
    <dataHost name="localhost" maxCon="1000" minCon="10" balance="0" writeType="0" dbType="mysql" dbDriver="native">  
        <heartbeat>select user()heartbeat>  
         
        <writeHost host="server1" url="127.0.0.1:3306" user="root" password="root"/>  
    dataHost> 
mycat:schema>

2.2 rule.xml配置

xml version="1.0" encoding="UTF-8"?>
DOCTYPE mycat:rule SYSTEM "rule.dtd">
<mycat:rule xmlns:mycat="http://io.mycat/">

    <tableRule name="rule1">
        <rule>
             
            <columns>idcolumns>
            <algorithm>mod-longalgorithm>
        rule>
    tableRule>
    
    <function name="mod-long" class="io.mycat.route.function.PartitionByMod">
        
        <property name="count">3property>
    function>
    
    
mycat:rule>

2.3 server.xml配置

xml version="1.0" encoding="UTF-8"?>

DOCTYPE mycat:server SYSTEM "server.dtd">
<mycat:server xmlns:mycat="http://io.mycat/">
    <system>
    <property name="useSqlStat">0property>  
    <property name="useGlobleTableCheck">0property>  
        <property name="sequnceHandlerType">1property>
        
       
         
    
    
        
        <property name="processorBufferPoolType">0property>
        
        
        
        
        
        
        
        
        <property name="handleDistributedTransactions">0property>
        
            
        <property name="useOffHeapForMerge">1property>

        
        <property name="memoryPageSize">1mproperty>

        
        <property name="spillsFileBufferSize">1kproperty>

        <property name="useStreamOutput">0property>

        
        <property name="systemReserveMemorySize">384mproperty>


        
        <property name="useZKSwitch">trueproperty>


    system>
    
    
    
    
    <user name="root">
        
        <property name="password">bluetooth@wy2019property>
        
        <property name="schemas">CHUNKproperty>
        
        
        
    user>

    <user name="user">
        <property name="password">userproperty>
        
        <property name="schemas">CHUNKproperty>
        <property name="readOnly">trueproperty>
    user>

mycat:server>

2.4 sequence_db_conf.properties配置

#sequence stored in datanode
GLOBAL=dn1
COMPANY=dn1
CUSTOMER=dn1
ORDERS=dn1
#逻辑库的分片函数在对应个库下
CN_CHUNK=dn01

三、建表语句

#创建表语句区块与子表区块锁
#添加表 区块
DROP TABLE IF EXISTS `cn_chunk`;
CREATE TABLE `cn_chunk` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `createdAt` datetime DEFAULT NULL COMMENT '创建时间',
  `modifiedAt` datetime DEFAULT NULL COMMENT '更新时间',
  `createdBy` varchar(36) DEFAULT NULL COMMENT '创建人',
  `modifiedBy` varchar(36) DEFAULT NULL COMMENT '更新人',
  `version` int(11) DEFAULT NULL COMMENT '版本号',
  `isDelete` int(11) DEFAULT NULL COMMENT '是否删除',
  `keyInfoId` varchar(36) DEFAULT NULL COMMENT '钥匙id',
  `chunkOne` int(11) DEFAULT NULL COMMENT '区块1',
  `chunkTwo` int(11) DEFAULT NULL COMMENT '区块2',
  `chunkThree` int(11) DEFAULT NULL COMMENT '区块3',
  `chunkFour` int(11) DEFAULT NULL COMMENT '区块4',
  `chunkFive` int(11) DEFAULT NULL COMMENT '区块5',
  `chunkSix` int(11) DEFAULT NULL COMMENT '区块6',
  `chunkSeven` int(11) DEFAULT NULL COMMENT '区块7',
  `chunkEight` int(11) DEFAULT NULL COMMENT '区块8',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

#添加表 区块锁
DROP TABLE IF EXISTS `cn_chunk_lockset`;
CREATE TABLE `cn_chunk_lockset` (
  `id` varchar(36) NOT NULL,
  `createdAt` datetime DEFAULT NULL COMMENT '创建时间',
  `modifiedAt` datetime DEFAULT NULL COMMENT '更新时间',
  `createdBy` varchar(36) DEFAULT NULL COMMENT '创建人',
  `modifiedBy` varchar(36) DEFAULT NULL COMMENT '更新人',
  `version` int(11) DEFAULT NULL COMMENT '版本号',
  `isDelete` int(11) DEFAULT NULL COMMENT '是否删除',
  `taskId` varchar(36) DEFAULT NULL COMMENT '任务id',
  `keyInfoId` varchar(36) DEFAULT NULL COMMENT '钥匙id',
  `startTime` datetime DEFAULT NULL COMMENT '起始时间',
  `endTime` datetime DEFAULT NULL COMMENT '截止时间',
  `chunkLocation` int(11) DEFAULT NULL COMMENT '对应区块(1-8)',
  `lockSetId` varchar(36) DEFAULT NULL COMMENT '锁具信息id',
  `lockId` varchar(50) DEFAULT NULL COMMENT '锁具Id',
  `lockSetName` varchar(50) DEFAULT NULL COMMENT '锁具名称',
  `principalId` varchar(36) DEFAULT NULL COMMENT '执行人id',
  `lockIdDecimal` int(11) DEFAULT NULL COMMENT '锁具Id十进制',
  `chunkId` bigint(20) DEFAULT NULL COMMENT '区块id',
  `thisUpdate` int(11) DEFAULT NULL COMMENT '本次更新（0：否，1：是）',
  `sequence` int(11) DEFAULT NULL COMMENT '区块锁序列号',
  PRIMARY KEY (`id`),
  KEY `fk_cn_chunk_lockset_cn_chunk` (`chunkId`),
  CONSTRAINT `cn_chunk_lockset_ibfk_1` FOREIGN KEY (`chunkId`) REFERENCES `cn_chunk` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

四、对应实体类

@Getter
@Setter
@Entity
@Table(name = "cn_chunk")
public class Chunk extends ChunkBaseEntity {

    /** 钥匙id*/
    @ApiModelProperty(value = "钥匙id")
    private String keyInfoId;

    /** 区块1*/
    @ApiModelProperty(value = "区块1")
    private Integer chunkOne = 0;

    /** 区块2*/
    @ApiModelProperty(value = "区块2")
    private Integer chunkTwo = 0;

    /** 区块3*/
    @ApiModelProperty(value = "区块3")
    private Integer chunkThree = 0;

    /** 区块4*/
    @ApiModelProperty(value = "区块4")
    private Integer chunkFour = 0;

    /** 区块5*/
    @ApiModelProperty(value = "区块5")
    private Integer chunkFive = 0;

    /** 区块6*/
    @ApiModelProperty(value = "区块6")
    private Integer chunkSix = 0;

    /** 区块7*/
    @ApiModelProperty(value = "区块7")
    private Integer chunkSeven = 0;

    /** 区块8*/
    @ApiModelProperty(value = "区块8")
    private Integer chunkEight = 0;

}

@Getter
@Setter
@Entity
@Table(name = "cn_chunk_lockset")
public class ChunkLockSet extends BaseEntity {

    /** 任务id*/
    @ApiModelProperty(value = "任务id")
    @Column(length = 36)
    private String taskId;

    /** 钥匙id*/
    @ApiModelProperty(value = "钥匙id")
    private String keyInfoId;

    /** 起始时间*/
    @ApiModelProperty(value = "起始时间")
    private LocalDateTime startTime;

    /** 截止时间*/
    @ApiModelProperty(value = "截止时间")
    private LocalDateTime endTime;

    /** 区块*/
    @ApiModelProperty(value = "区块")
    @ManyToOne
    @JoinColumn(name = "chunkId", updatable = false, insertable = false)
    @JsonIgnore
    private Chunk chunk;

    /** 区块id*/
    @ApiModelProperty(value = "区块id")
    @Column(name = "chunkId", updatable = false, length = 36)
    private Long chunkId;

    /** 对应区块(1-8)*/
    @ApiModelProperty(value = "对应区块(1-8)")
    private Integer chunkLocation;

    /** 锁具信息id*/
    @ApiModelProperty(value = "锁具信息id")
    @Column(name = "lockSetId", length = 36)
    private String lockSetId;

    /** 锁具Id*/
    @ApiModelProperty(value = "锁具Id")
    @Column(length = 50)
    private String lockId;

    /** 锁具Id十进制*/
    @ApiModelProperty(value = "锁具Id十进制")
    private Integer lockIdDecimal;

    /** 锁具名称*/
    @ApiModelProperty(value = "锁具名称")
    @Column(length = 50)
    private String lockSetName;

    /** 执行人id*/
    @ApiModelProperty(value = "执行人id")
    @Column(name = "principalId", length = 36)
    private String principalId;

    /** 是否已上传（0：否，1：是）*/
    @ApiModelProperty(value = "是否已上传（0：否，1：是）")
    private Integer thisUpdate = BooleanEnum.FALSE.ordinal();

    /** 区块锁序列号*/
    @ApiModelProperty(value = "区块锁序列号")
    private Integer sequence;

}

@Getter
@Setter
@MappedSuperclass
@EntityListeners(AuditingEntityListener.class)
@Slf4j
public abstract class ChunkBaseEntity implements Serializable {

    /**
     * 主键id
     * GenericGenerator 注解 strategy 参数设置参考如下
     * @see org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory
     * 参考网站：https://blog.csdn.net/mafian/article/details/53968878
     */
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id", updatable = false)
    @ApiModelProperty(value = "主键id", position = 1)
    private Long id;

    /** 创建时间*/
    @CreatedDate
    @ApiModelProperty(value = "创建时间", position = 2)
    @JsonFormat
    @DateTimeFormat
    private LocalDateTime createdAt;

    /** 更新时间*/
    @LastModifiedDate
    @ApiModelProperty(value = "更新时间", position = 3)
    @JsonFormat
    @DateTimeFormat
    private LocalDateTime modifiedAt;

    /** 创建人*/
    @Column(length = 36)
    @CreatedBy
    @ApiModelProperty(value = "创建人", position = 4)
    private String createdBy;

    /** 更新人*/
    @Column(length = 36)
    @LastModifiedBy
    @ApiModelProperty(value = "更新人", position = 5)
    private String modifiedBy;

    /** 版本（乐观锁）*/
    @Version
    @ApiModelProperty(value = "版本（乐观锁）", position = 6)
    private Integer version;

    /** 逻辑删除*/
    @ApiModelProperty(value = "逻辑删除", position = 7)
    private Integer isDelete = BooleanEnum.FALSE.ordinal();

}

 

五、mycat分片函数

配置文件：sequence_db_conf.properties
设置节点：CN_CHUNK=dn01

该参数设置在哪个节点，则就在对应的数据库内执行

#函数自增  实现新增数据自增长以1开始
#添加表
DROP TABLE IF EXISTS MYCAT_SEQUENCE;
CREATE TABLE MYCAT_SEQUENCE (
NAME VARCHAR (50) NOT NULL,
current_value INT NOT NULL,
increment INT NOT NULL DEFAULT 100,
PRIMARY KEY (NAME)
) ENGINE = INNODB ;


INSERT INTO MYCAT_SEQUENCE(name,current_value,increment) VALUES ('GLOBAL', 10000000, 100);

DROP FUNCTION IF EXISTS `mycat_seq_currval`;
DELIMITER ;;
CREATE FUNCTION `mycat_seq_currval`(seq_name VARCHAR(50))
RETURNS varchar(64) CHARSET utf8
    DETERMINISTIC
BEGIN DECLARE retval VARCHAR(64);
        SET retval="-999999999,null";
        SELECT concat(CAST(current_value AS CHAR),",",CAST(increment AS CHAR) ) INTO retval
          FROM MYCAT_SEQUENCE WHERE name = seq_name;
        RETURN retval ;
END
;;
DELIMITER ;

DROP FUNCTION IF EXISTS `mycat_seq_nextval`;
DELIMITER ;;
CREATE FUNCTION `mycat_seq_nextval`(seq_name VARCHAR(50)) RETURNS varchar(64)
 CHARSET utf8
    DETERMINISTIC
BEGIN UPDATE MYCAT_SEQUENCE
                 SET current_value = current_value + increment
                  WHERE name = seq_name;
         RETURN mycat_seq_currval(seq_name);
END
;;
DELIMITER ;


DROP FUNCTION IF EXISTS `mycat_seq_setval`;
DELIMITER ;;
CREATE FUNCTION `mycat_seq_setval`(seq_name VARCHAR(50), value INTEGER)
RETURNS varchar(64) CHARSET utf8
    DETERMINISTIC
BEGIN UPDATE MYCAT_SEQUENCE
                   SET current_value = value
                   WHERE name = seq_name;
         RETURN mycat_seq_currval(seq_name);
END
;;
DELIMITER ;




#插入一条数据，这条数据是我们这个表所需要的。
#必须是大写的字符，不然就会报错
#插入需要自增张的表的策略
#其中cn_chunk代表哪张表实现自增
insert into  MYCAT_SEQUENCE (name,current_value,increment) values ('cn_chunk',0,1);

六、关闭默认事务

import org.springframework.context.annotation.Configuration;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

/**
 * 关闭jpamor默认事务
 * @author lixin.shao
 */
@EnableJpaRepositories(basePackages = "com.hs.lock.bluetooth.chunk", enableDefaultTransactions = false)
@Configuration
public class JpaTransactionConfig {
}

 

转载于:https://www.cnblogs.com/shaolixin/p/11484103.html