Java框架篇:Spring+SpringMVC+hibernate整合開(kāi)發(fā)
前言:
最近沒(méi)什么事做,搭個(gè)框架寫(xiě)成博客記錄下來(lái),拉通一下之前所學(xué)知識(shí).
話(huà)不多說(shuō),我們直接步入正題。
準(zhǔn)備工作:
1/安裝并配置java運(yùn)行環(huán)境
2/數(shù)據(jù)庫(kù)的安裝配置(Mysql)
3/安裝并配置服務(wù)器(Tomcat)
4/Maven
5/ IntelliJIDEA的安裝配置(本人使用的主要軟件是IntelliJIDEA,沒(méi)用eclipse什么的)
6/ 使用IntelliJIDEA創(chuàng)建一個(gè)web app項(xiàng)目。
貌似就這些了吧
導(dǎo)包
不同于以往的導(dǎo)包,由于我們創(chuàng)建的是maven的webapp項(xiàng)目,所以現(xiàn)在只需配置下pomxml這個(gè)配置文件,系統(tǒng)會(huì)自動(dòng)到maven的中央倉(cāng)庫(kù)去下載相應(yīng)的包.
本人的pom.xml配置文件如下(都寫(xiě)有說(shuō)明的哈):
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>XRog</groupId> <artifactId>ssh</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>ssh Maven Webapp</name> <url>http://maven.apache.org</url> <!-- 本人將配置包的版本信息都統(tǒng)一放入此處,方便以后管理--> <properties> <springVersion>4.3.1.RELEASE</springVersion> <hibernateVersion>4.3.5.Final</hibernateVersion> <jstlVersion>1.2</jstlVersion> <taglibVersion>1.1.2</taglibVersion> <servletVersion>3.0-alpha-1</servletVersion> <jsonVersion>1.9.13</jsonVersion> <jacksonVersion>2.5.0</jacksonVersion> <mysqlVersion>6.0.3</mysqlVersion> <c3p0Version>0.9.1.2</c3p0Version> <log4jVersion>1.2.17</log4jVersion> <fileuploadVersion>1.3.1</fileuploadVersion> <lombokVersion>1.16.10</lombokVersion> </properties> <dependencies> <!-- 單元測(cè)試 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <!-- spring--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>${springVersion}</version> </dependency> <!-- spring web + spring MVC--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${springVersion}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${springVersion}</version> </dependency> <!-- hibernate配置--> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>${hibernateVersion}</version> </dependency> <!-- hibernate 緩存, 視情況添加--> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-ehcache</artifactId> <version>${hibernateVersion}</version> </dependency> <!-- jsp頁(yè)面使用的jstl支持--> <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>${jstlVersion}</version> </dependency> <dependency> <groupId>taglibs</groupId> <artifactId>standard</artifactId> <version>${taglibVersion}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>${servletVersion}</version> <scope>provided</scope> </dependency> <!-- DataBase數(shù)據(jù)庫(kù)連接 mysql包--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysqlVersion}</version> </dependency> <!-- 數(shù)據(jù)庫(kù)連接池--> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>${c3p0Version}</version> </dependency> <!-- json數(shù)據(jù) 使springMVC可以返回json值 ,視情況添加--> <dependency> <groupId>org.codehaus.jackson</groupId> <artifactId>jackson-mapper-asl</artifactId> <version>${jsonVersion}</version> </dependency> <!-- Jackson可以輕松的將Java對(duì)象轉(zhuǎn)換成json對(duì)象和xml文檔,同樣也可以將json、xml轉(zhuǎn)換成Java對(duì)象--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>${jacksonVersion}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>${jacksonVersion}</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>${jacksonVersion}</version> </dependency> <!-- log4j配置, 視情況添加--> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4jVersion}</version> </dependency> <!--文件 上傳--> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>${fileuploadVersion}</version> </dependency> <!-- lombok插件導(dǎo)包--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombokVersion}</version> <scope>provided</scope> </dependency> </dependencies> <build> <finalName>ssh</finalName> </build> </project>
OK,配置后運(yùn)行下maven,就會(huì)自動(dòng)向中央倉(cāng)庫(kù)下載相應(yīng)的包啦!(這個(gè)就不多說(shuō)了)。
SpringMVC配置
我現(xiàn)在在這里把我配置后的結(jié)構(gòu)拿出來(lái)給你們看下
我們先配置下SpringMVC的配置:resources/META-INF/spring-mvc.xml
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd"> <!-- 啟動(dòng)注解驅(qū)動(dòng)的spring MVC功能,注冊(cè)請(qǐng)求url和注解POJO類(lèi)方法的映射--> <mvc:annotation-driven /> <!-- 對(duì)模型視圖名稱(chēng)的解析,在請(qǐng)求時(shí)模型視圖名稱(chēng)添加前后綴 --> <context:component-scan base-package="com.ssh" /> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="views/" /> <!-- 前綴 --> <property name="suffix" value=".jsp" /> <!-- 后綴 --> </bean> <!--這里是對(duì)靜態(tài)資源的映射--> <mvc:resources mapping="/js/**" location="/resources/js/" /> <mvc:resources mapping="/css/**" location="/resources/css/" /> <mvc:resources mapping="/img/**" location="/resources/img/" /> </beans>
好了,我們現(xiàn)在修改下web.xml這個(gè)配置文件,完善下SpringMVC的配置, web.xml配置如下:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <!-- 地址為http://localhost:8080/ 顯示的默認(rèn)網(wǎng)頁(yè)--> <welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list> <!-- spring MVC config start--> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <!-- 此處指向的的是SpringMVC的配置文件 --> <param-value>classpath:META-INF/spring-mvc.xml</param-value> </init-param> <!--配置容器在啟動(dòng)的時(shí)候就加載這個(gè)servlet并實(shí)例化--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- spring MVC config end--> </web-app>
OK,SpringMVC配置完成,現(xiàn)在我們進(jìn)行一下測(cè)試吧
在controller層新建一個(gè)MainController,內(nèi)容如下
package com.ssh.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; /** * Created by XRog * On 2/1/2017.12:36 AM */ @Controller public class MainController { @RequestMapping(value = "test", method = RequestMethod.GET) public String test(){ // 實(shí)際返回的是views/test.jsp ,spring-mvc.xml中配置過(guò)前后綴 return "test"; } }
test.jsp網(wǎng)頁(yè)如下:
<html> <body> <center> <h2 style="color: #ff261a;">this is my test page!</h2> </center> </body> </html>
重啟Tomcat服務(wù)器, 然后瀏覽器訪問(wèn)http://localhost/test如下圖所示:
PS: Tomcat默認(rèn)端口是8080,我更改了端口號(hào),如若你們?yōu)楦模_的訪問(wèn)地址是localhost:8080/test
OK,成功訪問(wèn)。
SpringMVC+Spring整合
這個(gè)就十分簡(jiǎn)單了, 配置applicationContext.xml這個(gè)Spring的配置文件如下:
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd"> <!-- 自動(dòng)掃描 --> <context:component-scan base-package="com.ssh"> <!-- 掃描時(shí)跳過(guò) @Controller 注解的JAVA類(lèi)(控制器) --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> </beans>
完善web.xml配置文件如下:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <!-- 地址為http://localhost:8080/ 顯示的默認(rèn)網(wǎng)頁(yè)--> <welcome-file-list> <welcome-file>/index.jsp</welcome-file> </welcome-file-list> <!--加載Spring的配置文件到上下文中去--> <context-param> <param-name>contextConfigLocation</param-name> <param-value> classpath:META-INF/applicationContext.xml </param-value> </context-param> <!-- spring MVC config start--> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <!-- 此處指向的的是SpringMVC的配置文件 --> <param-value>classpath:META-INF/spring-mvc.xml</param-value> </init-param> <!--配置容器在啟動(dòng)的時(shí)候就加載這個(gè)servlet并實(shí)例化--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- spring MVC config end--> <!-- Spring監(jiān)聽(tīng)器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 字符集過(guò)濾 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
web.xml配置文件中更改了三處:引入Spring配置文件 Spring的監(jiān)聽(tīng)器 以及 字符集過(guò)濾
OK,Spring+SpringMVC配置完成,下面我們開(kāi)始測(cè)試:
在service寫(xiě)一個(gè)TestServiceImpl實(shí)現(xiàn)TestService接口并實(shí)現(xiàn)其test()方法, 代碼如下:
package com.ssh.service.impl; import com.ssh.service.TestService; import org.springframework.stereotype.Service; /** * Created by XRog * On 2/1/2017.12:58 AM */ @Service public class TestServiceImpl implements TestService { public String test() { return "test"; } }
PS:這里注意寫(xiě)@Service注解
MainController控制器更改如下:
package com.ssh.controller; import com.ssh.service.TestService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody; /** * Created by XRog * On 2/1/2017.12:36 AM */ @Controller public class MainController { @Autowired private TestService testService; @RequestMapping(value = "test", method = RequestMethod.GET) public String test(){ // 實(shí)際返回的是views/test.jsp ,spring-mvc.xml中配置過(guò)前后綴 return "test"; } @RequestMapping(value = "springtest", method = RequestMethod.GET) public String springTest(){ return testService.test(); } }
控制器這里我們運(yùn)用了Spring的依賴(lài)注入自動(dòng)裝配。
在瀏覽器中輸入地址http://localhost/springtest調(diào)用springtest方法
yes,成功返回,說(shuō)明我們之前的配置沒(méi)問(wèn)題
Spring+SpringMVC+hibernate整合
好了,現(xiàn)在就缺hibernate這個(gè)框架了。。 我先給大家看些我搭建好之后的結(jié)構(gòu)圖吧
我們想來(lái)編寫(xiě)config.properties這個(gè)配置文件,里面存放的是hibernate的一些配置
#database connection config jdbc.driver = com.mysql.jdbc.Driver jdbc.url = jdbc:mysql://?????:3306/ssh?useUnicode=true&characterEncoding=utf-8 jdbc.username = root jdbc.password = ??? #hibernate config hibernate.dialect = org.hibernate.dialect.MySQLDialect hibernate.show_sql = true hibernate.format_sql = true hibernate.hbm2ddl.auto = update
這里連接數(shù)據(jù)庫(kù)的參數(shù)由于我是連接我晚上的數(shù)據(jù)庫(kù),因此我數(shù)據(jù)庫(kù)地址和密碼打了“???”,你們連接時(shí)改成自己本地的就OK了
下面配置hibernate,這里我為了方便,就直接寫(xiě)進(jìn)applicationContext.xml里面。配置后的applicationContext.xml如下:
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd"> <!--********************************************配置Spring***************************************--> <!-- 自動(dòng)掃描 --> <context:component-scan base-package="com.ssh"> <!-- 掃描時(shí)跳過(guò) @Controller 注解的JAVA類(lèi)(控制器) --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--********************************************配置hibernate********************************************--> <!--掃描配置文件(這里指向的是之前配置的那個(gè)config.properties)--> <context:property-placeholder location="classpath:/config.properties" /> <!--配置數(shù)據(jù)源--> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass" value="${jdbc.driver}" /> <!--數(shù)據(jù)庫(kù)連接驅(qū)動(dòng)--> <property name="jdbcUrl" value="${jdbc.url}" /> <!--數(shù)據(jù)庫(kù)地址--> <property name="user" value="${jdbc.username}" /> <!--用戶(hù)名--> <property name="password" value="${jdbc.password}" /> <!--密碼--> <property name="maxPoolSize" value="40" /> <!--最大連接數(shù)--> <property name="minPoolSize" value="1" /> <!--最小連接數(shù)--> <property name="initialPoolSize" value="10" /> <!--初始化連接池內(nèi)的數(shù)據(jù)庫(kù)連接--> <property name="maxIdleTime" value="20" /> <!--最大空閑時(shí)間--> </bean> <!--配置session工廠--> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="packagesToScan" value="com.ssh.entity" /> <property name="hibernateProperties"> <props> <prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop> <!--hibernate根據(jù)實(shí)體自動(dòng)生成數(shù)據(jù)庫(kù)表--> <prop key="hibernate.dialect">${hibernate.dialect}</prop> <!--指定數(shù)據(jù)庫(kù)方言--> <prop key="hibernate.show_sql">${hibernate.show_sql}</prop> <!--在控制臺(tái)顯示執(zhí)行的數(shù)據(jù)庫(kù)操作語(yǔ)句--> <prop key="hibernate.format_sql">${hibernate.format_sql}</prop> <!--在控制臺(tái)顯示執(zhí)行的數(shù)據(jù)哭操作語(yǔ)句(格式)--> </props> </property> </bean> <!-- 事物管理器配置 --> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> </beans>
OK,到了這里,配置結(jié)束。下面進(jìn)入測(cè)試階段
實(shí)體類(lèi)(entity):
package com.ssh.entity; import lombok.Data; import javax.persistence.*; /** * Created by XRog * On 2/2/2017.2:03 PM */ @Data @Entity @Table(name = "Person") public class Person { @Id @GeneratedValue private Long id; @Column(name = "created") private Long created = System.currentTimeMillis(); @Column(name = "username") private String username; @Column(name = "address") private String address; @Column(name = "phone") private String phone; @Column(name = "remark") private String remark; }
PS:我這里用了一個(gè)@Data注解,此注解會(huì)自動(dòng)生成get方法,set方法,toString方法等一系列方法,功能十分強(qiáng)大,不過(guò)需要安裝插件以及導(dǎo)包, 有興趣的可以百度下
當(dāng)然,你也可以手動(dòng)編寫(xiě)get/set/構(gòu)造方法。
數(shù)據(jù)庫(kù)訪問(wèn)層(repository):
package com.ssh.repository; import java.io.Serializable; import java.util.List; /** * Created by XRog * On 2/2/2017.2:28 PM */ public interface DomainRepository<T,PK extends Serializable>{ T load(PK id); T get(PK id); List<T> findAll(); void persist(T entity); PK save(T entity); void saveOrUpdate(T entity); void delete(PK id); void flush(); }
package com.ssh.repository; import com.ssh.entity.Person; /** * Created by XRog * On 2/2/2017.2:25 PM */ public interface PersonRepository extends DomainRepository<Person,Long> { }
package com.ssh.repository.impl; import com.ssh.repository.PersonRepository; import com.ssh.entity.Person; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; import java.util.List; /** * Created by XRog * On 2/2/2017.2:30 PM */ @Repository public class PersonRepositoryImpl implements PersonRepository { @Autowired private SessionFactory sessionFactory; private Session getCurrentSession() { return this.sessionFactory.openSession(); } public Person load(Long id) { return (Person)getCurrentSession().load(Person.class,id); } public Person get(Long id) { return (Person)getCurrentSession().get(Person.class,id); } public List<Person> findAll() { return null; } public void persist(Person entity) { getCurrentSession().persist(entity); } public Long save(Person entity) { return (Long)getCurrentSession().save(entity); } public void saveOrUpdate(Person entity) { getCurrentSession().saveOrUpdate(entity); } public void delete(Long id) { Person person = load(id); getCurrentSession().delete(person); } public void flush() { getCurrentSession().flush(); } }
PS:我這里顯示寫(xiě)了一個(gè)比較通用的接口,其他所有接口皆繼承此接口, 再編寫(xiě)實(shí)現(xiàn)類(lèi)
注意:我這里寫(xiě)的session產(chǎn)生是調(diào)用的SessionFactory的openSession()這個(gè)方法。之前使用getCurrentSession()一直報(bào)錯(cuò),后來(lái)百度了一下才知道,hibernate3版本可以使用getCurrentSession()來(lái)創(chuàng)建session,而hibernate4版本則不行。
服務(wù)層(service):
package com.ssh.service; import com.ssh.entity.Person; /** * Created by XRog * On 2/2/2017.2:39 PM */ public interface PersonService { Long savePerson(); }
package com.ssh.service.impl; import com.ssh.entity.Person; import com.ssh.repository.PersonRepository; import com.ssh.service.PersonService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * Created by XRog * On 2/2/2017.2:40 PM */ @Service public class PersonServiceImpl implements PersonService { @Autowired private PersonRepository personRepository; public Long savePerson() { Person person = new Person(); person.setUsername("XRog"); person.setPhone("18381005946"); person.setAddress("chenDu"); person.setRemark("this is XRog"); return personRepository.save(person); } }
控制層(controller):
package com.ssh.controller; import com.ssh.entity.Person; import com.ssh.service.PersonService; import com.ssh.service.TestService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody; /** * Created by XRog * On 2/1/2017.12:36 AM */ @Controller public class MainController { @Autowired private PersonService personService; @RequestMapping(value = "savePerson", method = RequestMethod.GET) @ResponseBody public String savePerson(){ personService.savePerson(); return "success!"; } }
OK,編寫(xiě)完畢,我們重啟下服務(wù)器然后測(cè)試:
我們?cè)诳聪聰?shù)據(jù)庫(kù),跟我們插入的數(shù)據(jù)對(duì)比下
OK,測(cè)試完畢,十分成功
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