Hibernate入门（五）
一 Hibernate继承映射
我们可以将继承层次结构类与数据库的表映射。
1. 每个层次类一张表
这个层次结构有三个类，Employee是Regular_Employee和Contract_Employee类的超类(父类)。
此层次结构的表结构如下所示：
XML实现
1）创建持久化类
Employee.java
package cn;
public class Employee {
private int id;
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Regular_Employee.java
package cn;
public class Regular_Employee extends Employee{
private float salary;
private int bonus;
public float getSalary() {
return salary;
}
public void setSalary(float salary) {
this.salary = salary;
}
public int getBonus() {
return bonus;
}
public void setBonus(int bonus) {
this.bonus = bonus;
}
}
Contract_Employee.java
package cn;
public class Contract_Employee extends Employee{
private float pay_per_hour;
private String contract_duration;
public float getPay_per_hour() {
return pay_per_hour;
}
public void setPay_per_hour(float pay_per_hour) {
this.pay_per_hour = pay_per_hour;
}
public String getContract_duration() {
return contract_duration;
}
public void setContract_duration(String contract_duration) {
this.contract_duration = contract_duration;
}
}
2)创建映射文件
在每个类层次结构一个表的情况下，hibernate框架添加了一个标识符列，该框架指定了记录的类型。 它主要用于区分记录。要指定它，必须指定类的 discriminator 子元素。
类的子类subelement指定子类。 在这种情况下，Regular_Employee和Contract_Employee是Employee类的子类。
Employee.hbm.xml
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping>
<class name="cn.Employee" table="employee">
<id name="id">
<generator class="increment"></generator>
</id>
<discriminator column="type" type="string"></discriminator>
<property name="name"></property> <subclass name = "cn.Regular_Employee" discriminator-value="reg_emp">
<property name="salary"></property>
<property name="bonus"></property>
</subclass> <subclass name = "cn.Contract_Employee" discriminator-value="con_emp">
<property name="pay_per_hour"></property>
<property name="contract_duration"></property>
</subclass> </class> </hibernate-mapping>
3）在配置文件中增加Employee.hbm.xml
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hbm2ddl.auto">update</property>
<property name="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</property>
<property name="hibernate.connection.driver_class">
com.mysql.jdbc.Driver
</property>
<property name="hibernate.connection.url">
jdbc:mysql://localhost/test
</property>
<property name="hibernate.connection.username">
root
</property>
<property name="hibernate.connection.password">
root
</property>
<property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
<property name="show_sql">true</property>
<property name="hibernate.cache.use_second_level_cache">true</property>
<property name="cache.provider_class">org.hibernate.cache.EhCacheProvider</property>
<!-- List of XML mapping files -->
<mapping resource="cn/Employee.hbm.xml"/>
</session-factory>
</hibernate-configuration>
4）测试
package cn; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration; import com.User; public class Test { public static void main(String[] args) {
Configuration cfg = new Configuration();
cfg.configure("hibernate.cfg.xml");
SessionFactory factory = cfg.buildSessionFactory();
Session session = factory.openSession();
session.beginTransaction(); Employee emp = new Employee();
emp.setName("emp"); Regular_Employee reg = new Regular_Employee();
reg.setName("reg_emp");
reg.setSalary(10000);
reg.setBonus(1); Contract_Employee con = new Contract_Employee();
con.setName("con_emp");
con.setPay_per_hour(200);
con.setContract_duration("20h"); session.persist(emp);
session.persist(reg);
session.persist(con); session.getTransaction().commit();
session.close();
}
}
注解实现
1）创建持久化类
Employee.java
package cn; import javax.persistence.Column;
import javax.persistence.DiscriminatorColumn;
import javax.persistence.DiscriminatorType;
import javax.persistence.DiscriminatorValue;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Inheritance;
import javax.persistence.InheritanceType;
import javax.persistence.Table; @Entity
@Table(name="employee")
@Inheritance(strategy=InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name="type",discriminatorType=DiscriminatorType.STRING)
@DiscriminatorValue(value="employeee")
public class Employee { @Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name="id")
private int id; @Column(name="name")
private String name; public int getId() {
return id;
} public void setId(int id) {
this.id = id;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} }
Regular_Employee.java
package cn; import javax.persistence.Column;
import javax.persistence.DiscriminatorValue;
import javax.persistence.Entity; @Entity
@DiscriminatorValue(value="reg")
public class Regular_Employee extends Employee{ @Column(name="salary")
private float salary; @Column(name="bonus")
private int bonus; public float getSalary() {
return salary;
} public void setSalary(float salary) {
this.salary = salary;
} public int getBonus() {
return bonus;
} public void setBonus(int bonus) {
this.bonus = bonus;
} }
Contract_Employee.java
package cn; import javax.persistence.Column;
import javax.persistence.DiscriminatorValue;
import javax.persistence.Entity; @Entity
@DiscriminatorValue(value="con")
public class Contract_Employee extends Employee{ @Column(name="pay_per_hour")
private float pay_per_hour;
@Column(name="contract_duration")
private String contract_duration;
public float getPay_per_hour() {
return pay_per_hour;
}
public void setPay_per_hour(float pay_per_hour) {
this.pay_per_hour = pay_per_hour;
}
public String getContract_duration() {
return contract_duration;
}
public void setContract_duration(String contract_duration) {
this.contract_duration = contract_duration;
} }
2)配置文件中增加持久化类
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hbm2ddl.auto">update</property>
<property name="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</property>
<property name="hibernate.connection.driver_class">
com.mysql.jdbc.Driver
</property>
<property name="hibernate.connection.url">
jdbc:mysql://localhost/test
</property>
<property name="hibernate.connection.username">
root
</property>
<property name="hibernate.connection.password">
root
</property>
<property name="show_sql">true</property>
<mapping class="cn.Employee"/>
<mapping class="cn.Regular_Employee"/>
<mapping class="cn.Contract_Employee"/>
</session-factory>
</hibernate-configuration>
3）测试
package cn; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration; public class Test { public static void main(String[] args) { SessionFactory factory = new AnnotationConfiguration().configure().buildSessionFactory();
Session session = factory.openSession();
Transaction t = session.beginTransaction(); t.begin(); Employee emp = new Employee();
emp.setName("emp"); Regular_Employee reg = new Regular_Employee();
reg.setName("reg_emp");
reg.setSalary(10000);
reg.setBonus(1); Contract_Employee con = new Contract_Employee();
con.setName("con_emp");
con.setPay_per_hour(200);
con.setContract_duration("20h"); session.persist(emp);
session.persist(reg);
session.persist(con); t.commit(); session.close(); } }
2. 每个具体类一张表
数据库中将有三个表，彼此之间没有关系。
XML实现
1) 创建持久化类
Employee.java
package cnn;
public class Employee {
private int id;
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Regular_Employee.java
package cnn;
public class Regular_Employee extends Employee{
private float salary;
private int bonus;
public float getSalary() {
return salary;
}
public void setSalary(float salary) {
this.salary = salary;
}
public int getBonus() {
return bonus;
}
public void setBonus(int bonus) {
this.bonus = bonus;
}
}
Contract_Employee.java
package cnn;
public class Contract_Employee extends Employee {
private float pay_per_hour;
private String contract_duration;
public float getPay_per_hour() {
return pay_per_hour;
}
public void setPay_per_hour(float pay_per_hour) {
this.pay_per_hour = pay_per_hour;
}
public String getContract_duration() {
return contract_duration;
}
public void setContract_duration(String contract_duration) {
this.contract_duration = contract_duration;
}
}
2）employee.hbm.xml
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping>
<class name="cnn.Employee" table="employee">
<id name="id">
<generator class="increment"></generator>
</id>
<property name="name"></property> <union-subclass name = "cnn.Regular_Employee" table="regular" >
<property name="salary"></property>
<property name="bonus"></property>
</union-subclass> <union-subclass name = "cnn.Contract_Employee" table="contract">
<property name="pay_per_hour"></property>
<property name="contract_duration"></property>
</union-subclass> </class> </hibernate-mapping>
3) 在配置文件中增加hbm文件的映射
<!-- List of XML mapping files -->
<mapping resource="cnn/Employee.hbm.xml"/>
4）测试
package cnn; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration; import com.User; public class Test { public static void main(String[] args) {
Configuration cfg = new Configuration();
cfg.configure("hibernate.cfg.xml");
SessionFactory factory = cfg.buildSessionFactory();
Session session = factory.openSession();
session.beginTransaction(); Employee emp = new Employee();
emp.setName("emp"); Regular_Employee reg = new Regular_Employee();
reg.setName("reg_emp");
reg.setSalary(10000);
reg.setBonus(1); Contract_Employee con = new Contract_Employee();
con.setName("con_emp");
con.setPay_per_hour(200);
con.setContract_duration("20h"); session.persist(emp);
session.persist(reg);
session.persist(con); session.getTransaction().commit();
session.close();
}
}
注解实现
1）创建持久化类
Employee.java
package cnn; import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Inheritance;
import javax.persistence.InheritanceType;
import javax.persistence.Table; @Entity
@Table(name="employee")
@Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
public class Employee { @Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private int id; @Column(name = "name")
private String name; public int getId() {
return id;
} public void setId(int id) {
this.id = id;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} }
Regular_Employee.java
package cnn; import javax.persistence.AttributeOverride;
import javax.persistence.AttributeOverrides;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table; @Entity
@Table(name = "regular")
@AttributeOverrides({
@AttributeOverride(name = "id", column = @Column(name = "id")),
@AttributeOverride(name = "name", column = @Column(name = "name")) })
public class Regular_Employee extends Employee{ @Column(name = "salary")
private float salary; @Column(name = "bonus")
private int bonus; public float getSalary() {
return salary;
} public void setSalary(float salary) {
this.salary = salary;
} public int getBonus() {
return bonus;
} public void setBonus(int bonus) {
this.bonus = bonus;
} }
Contract_Employee.java
package cnn; import javax.persistence.AttributeOverride;
import javax.persistence.AttributeOverrides;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table; @Entity
@Table(name = "contract")
@AttributeOverrides({
@AttributeOverride(name = "id", column = @Column(name = "id")),
@AttributeOverride(name = "name", column = @Column(name = "name")) })
public class Contract_Employee extends Employee {
@Column(name = "pay_per_hour")
private float pay_per_hour;
@Column(name = "contract_duration")
private String contract_duration;
public float getPay_per_hour() {
return pay_per_hour;
}
public void setPay_per_hour(float pay_per_hour) {
this.pay_per_hour = pay_per_hour;
}
public String getContract_duration() {
return contract_duration;
}
public void setContract_duration(String contract_duration) {
this.contract_duration = contract_duration;
} }
2)在配置文件中添加hbm文件映射
<mapping class="cnn.Employee"/>
<mapping class="cnn.Regular_Employee"/>
<mapping class="cnn.Contract_Employee"/>
3）测试类
package cnn; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration; public class Test { public static void main(String[] args) { SessionFactory factory = new AnnotationConfiguration().configure().buildSessionFactory();
Session session = factory.openSession();
Transaction t = session.beginTransaction(); t.begin(); Employee emp = new Employee();
emp.setName("emp"); Regular_Employee reg = new Regular_Employee();
reg.setName("reg_emp");
reg.setSalary(20000);
reg.setBonus(12); Contract_Employee con = new Contract_Employee();
con.setName("con_emp");
con.setPay_per_hour(100);
con.setContract_duration("30h"); session.persist(emp);
session.persist(reg);
session.persist(con); t.commit(); session.close(); } }
3. 每个子类一张表
在每个子类一张表的情况下，子类映射表与主键和外键的关系与父类映射表相关。
XML实现
1）创建持久化类
Employee.java
package cnnn;
public class Employee {
private int id;
private String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Regular_Employee.java
package cnnn;
public class Regular_Employee extends Employee{
private float salary;
private int bonus;
public float getSalary() {
return salary;
}
public void setSalary(float salary) {
this.salary = salary;
}
public int getBonus() {
return bonus;
}
public void setBonus(int bonus) {
this.bonus = bonus;
}
}
Contract_Employee.java
package cnnn;
public class Contract_Employee extends Employee{
private float pay_per_hour;
private String contract_duration;
public float getPay_per_hour() {
return pay_per_hour;
}
public void setPay_per_hour(float pay_per_hour) {
this.pay_per_hour = pay_per_hour;
}
public String getContract_duration() {
return contract_duration;
}
public void setContract_duration(String contract_duration) {
this.contract_duration = contract_duration;
}
}
2）Employee.hbm.xml
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping>
<class name="cnnn.Employee" table="employee">
<id name="id">
<generator class="increment"></generator>
</id>
<property name="name"></property> <joined-subclass name = "cnnn.Regular_Employee" >
<key column="reg_id"></key>
<property name="salary"></property>
<property name="bonus"></property>
</joined-subclass> <joined-subclass name = "cnnn.Contract_Employee" >
<key column="con_id"></key>
<property name="pay_per_hour"></property>
<property name="contract_duration"></property>
</joined-subclass> </class> </hibernate-mapping>
3)在配置文件中添加hbm文件的映射
<mapping resource="cnnn/Employee.hbm.xml"/>
4）测试
package cnnn; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration; import com.User; public class Test { public static void main(String[] args) {
Configuration cfg = new Configuration();
cfg.configure("hibernate.cfg.xml");
SessionFactory factory = cfg.buildSessionFactory();
Session session = factory.openSession();
session.beginTransaction(); Employee emp = new Employee();
emp.setName("emp"); Regular_Employee reg = new Regular_Employee();
reg.setName("reg_emp");
reg.setSalary(10000);
reg.setBonus(1); Contract_Employee con = new Contract_Employee();
con.setName("con_emp");
con.setPay_per_hour(200);
con.setContract_duration("20h"); session.persist(emp);
session.persist(reg);
session.persist(con); session.getTransaction().commit();
session.close();
}
}
注解实现
1）创建持久化类
Employee.java
package cnnn; import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Inheritance;
import javax.persistence.InheritanceType;
import javax.persistence.Table; @Entity
@Table(name="employee")
@Inheritance(strategy = InheritanceType.JOINED)
public class Employee { @Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private int id; @Column(name = "name")
private String name; public int getId() {
return id;
} public void setId(int id) {
this.id = id;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} }
Regular_Employee.java
package cnnn; import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.PrimaryKeyJoinColumn;
import javax.persistence.Table; @Entity
@Table(name = "regular")
@PrimaryKeyJoinColumn(name = "ID")
public class Regular_Employee extends Employee{ @Column(name = "salary")
private float salary; @Column(name = "bonus")
private int bonus; public float getSalary() {
return salary;
} public void setSalary(float salary) {
this.salary = salary;
} public int getBonus() {
return bonus;
} public void setBonus(int bonus) {
this.bonus = bonus;
} }
package cnnn; import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.PrimaryKeyJoinColumn;
import javax.persistence.Table; @Entity
@Table(name = "contract")
@PrimaryKeyJoinColumn(name = "ID")
public class Contract_Employee extends Employee {
@Column(name = "pay_per_hour")
private float pay_per_hour;
@Column(name = "contract_duration")
private String contract_duration;
public float getPay_per_hour() {
return pay_per_hour;
}
public void setPay_per_hour(float pay_per_hour) {
this.pay_per_hour = pay_per_hour;
}
public String getContract_duration() {
return contract_duration;
}
public void setContract_duration(String contract_duration) {
this.contract_duration = contract_duration;
} }
2)在配置文件中增加配置
<mapping class="cnnn.Employee"/>
<mapping class="cnnn.Regular_Employee"/>
<mapping class="cnnn.Contract_Employee"/>
3）测试
package cnnn; import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration; public class Test { public static void main(String[] args) { SessionFactory factory = new AnnotationConfiguration().configure().buildSessionFactory();
Session session = factory.openSession();
Transaction t = session.beginTransaction(); t.begin(); Employee emp = new Employee();
emp.setName("emp"); Regular_Employee reg = new Regular_Employee();
reg.setName("reg_emp");
reg.setSalary(20000);
reg.setBonus(12); Contract_Employee con = new Contract_Employee();
con.setName("con_emp");
con.setPay_per_hour(100);
con.setContract_duration("30h"); session.persist(emp);
session.persist(reg);
session.persist(con); t.commit(); session.close(); } }
Hibernate入门（五）的更多相关文章
- Hibernate入门(五)---------事务管理
在Hibernate中,可以通过代码来操作管理事务,如通过“Transaction tx = session.beginTransaction()”,开启一个事务,持久化操作后,通过"tx. ...
- openresty 前端开发入门五之Mysql篇
openresty 前端开发入门五之Mysql篇 这章主要演示怎么通过lua连接mysql,并根据用户输入的name从mysql获取数据,并返回给用户 操作mysql主要用到了lua-resty-my ...
- 三大框架之hibernate入门
hibernate入门 1.orm hibernate是一个经典的开源的orm[数据访问中间件]框架 ORM( Object Relation Mapping)对象关 ...
- Hibernate入门案例及增删改查
一.Hibernate入门案例剖析: ①创建实体类Student 并重写toString方法 public class Student { private Integer sid; private I ...
- Hibernate入门案例 增删改
一.Hibernate入门案例剖析: ①创建实体类Student 并重写toString方法 public class Student { private Integer sid; private I ...
- Hibernate入门6.Hibernate检索方式
Hibernate入门6.Hibernate检索方式 20131128 代码下载 链接: http://pan.baidu.com/s/1Ccuup 密码: vqlv Hibernate的整体框架已经 ...
- Hibernate入门5持久化对象关系和批量处理技术
Hibernate入门5持久化对象关系和批量处理技术 20131128 代码下载 链接: http://pan.baidu.com/s/1Ccuup 密码: vqlv 前言: 前面学习了Hiberna ...
- Hibernate入门4.核心技能
Hibernate入门4.核心技能 20131128 代码下载 链接: http://pan.baidu.com/s/1Ccuup 密码: vqlv 前言: 前面学习了Hibernate3的基本知识, ...
- Hibernate入门3.配置映射文件深入
Hibernate入门3.配置映射文件深入 2013.11.27 前言: 之前的两节是在Java项目中如何使用hibernate,并且通过一个简单地项目实践,期间有很多的错误,一般都是因为配置包的问题 ...
- 简单的Hibernate入门简介
其实Hibernate本身是个独立的框架,它不需要任何web server或application server的支持.然而,大多数的Hibernate入门介绍都加入了很多非Hibernate的东西, ...
随机推荐
- 把上传Github的代码添加Cocoapods支持
开始 这里我将从最初的开始进行介绍,包括Github上创建项目已经上传项目,到最后的支持Cocoapods. 步骤如下: 代码上传Github 创建podspec文件,并验证是否通过 在Github上 ...
- 学习《ASP.NET MVC5高级编程》——基架
基架--代码生成的模板.我姑且这么去定义它,在我学习微软向编程之前从未听说过,比如php代码,大部分情况下是我用vim去手写而成,重复使用的代码需要复制粘贴,即使后来我在使用eclipse这样的IDE ...
- 基于jQuery的自定义插件：实现整屏分页转换的功能
动态创建jQuery插件 一.实现功能: 1.基本功能:自适应式整屏分页功能的实现 2.通过鼠标点击标签页转换分页,支持键盘上下左右键的转换分页,同样支持 鼠标滚轮上下滑动转换分页 3.切屏时的动画效 ...
- poj2352树状数组
Astronomers often examine star maps where stars are represented by points on a plane and each star h ...
- 设计模式的征途—5.原型（Prototype）模式
相信大多数的人都看过<西游记>,对孙悟空拔毛变出小猴子的故事情节应该都很熟悉.孙悟空可以用猴毛根据自己的形象复制出很多跟自己一模一样的小猴兵出来,其实在设计模式中也有一个类似的模式,我们可 ...
- hdu1507 Uncle Tom's Inherited Land* 二分匹配
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1507 将i+j为奇数的构成x集合中 将i+j为偶数的构成y集合中 然后就是构建二部图 关键就是构图 然 ...
- JAVA并发编程实战---第三章：对象的共享
在没有同步的情况下,编译器.处理器以及运行时等都可能对操作的执行顺序进行一些意想不到的调整.在缺乏足够同步的多线程程序中,要对内存操作的执行顺序进行判断几乎无法得到正确的结果. 非原子的64位操作 当 ...
- spring-线程池（3）
一.初始化 1,直接调用 import java.util.concurrent.ThreadPoolExecutor.CallerRunsPolicy; import org.springframe ...
- php implode()函数详解
php implode()函数的作用? php 中implode() 函数是返回一个由数组元素组合成的字符串,它与php explode()函数的作用是相反的,php explode() 函数是:使用 ...
- zookeeper的安装与配置
本文将通过三个zookeeper的节点去配置 1.首先去官网下载zookeeper的包 zookeeper-3.4.10.tar.gz 2.用FTP文上传到/usr/local下 3.解压文件tar ...