Spring Boot + Jpa(Hibernate) 架構(gòu)基本配置詳解
1、基于springboot-1.4.0.RELEASE版本測(cè)試
2、springBoot + hibernate + Druid + MySQL + servlet(jsp)
不廢話,直接上代碼
一、maven的pom文件
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.zsx</groupId>
<artifactId>demo</artifactId>
<packaging>war</packaging>
<version>0.0.1</version>
<name>zsx Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<jdk.version>1.7</jdk.version>
<tomcat.version>7.0.69</tomcat.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
</parent>
<dependencies>
<!-- 添加對(duì)jsp視圖解析的支持 -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 下面兩個(gè)引入為了操作數(shù)據(jù)庫(kù) -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<!-- 只需引入spring-boot-devtools 即可實(shí)現(xiàn)熱部署 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<!-- Json包 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.16</version>
</dependency>
<!-- 為了監(jiān)控?cái)?shù)據(jù)庫(kù) -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.25</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.14</version>
</dependency>
<!-- Junit 單元測(cè)試 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.6.0</version>
</dependency>
</dependencies>
<build>
<finalName>/</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<dependencies>
<!-- 熱部署 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
<version>1.2.6.RELEASE</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>ali</id>
<name>ali Repository</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>
二、項(xiàng)目架構(gòu)
想想還是介紹一下項(xiàng)目的目錄結(jié)構(gòu),這樣方便梳理整體的架構(gòu)配置
src
├─main
│ ├─java
│ │ └─com
│ │ └─zsx
│ │ │ Application.java
│ │ │ SpringBootStartApplication.java
│ │ │
│ │ ├─common
│ │ │ ├─config
│ │ │ │ DruidDBConfig.java
│ │ │ │ MultipartConfig.java
│ │ │ │
│ │ │ ├─filter
│ │ │ │ DruidStatFilter.java
│ │ │ │
│ │ │ ├─interceptors
│ │ │ │ AuthInterceptor.java
│ │ │ │ WebAppConfigurer.java
│ │ │ │
│ │ │ ├─servlet
│ │ │ │ DruidStatViewServlet.java
│ │ │ │
│ │ │ └─swagger
│ │ │ Swagger2.java
│ │ │
│ │ ├─controller
│ │ │ │ LoginController.java
│ │ │ │ TestController.java
│ │ │ │ UserController.java
│ │ │
│ │ ├─dao
│ │ │ │ TUserDao.java
│ │ │ │
│ │ │ └─impl
│ │ ├─entity
│ │ │ │ BaseEntity.java
│ │ │
│ │ ├─model
│ │ │ │ Tree.java
│ │ │
│ │ ├─service
│ │ │ │ UserService.java
│ │ │ │
│ │ │ └─impl
│ │ │ UserServiceImpl.java
│ │ │
│ │ └─util
│ │ GeneratePageable.java
│ │
│ ├─resources
│ │ │ application.properties
│ │ │ logback-test.xml
│ │ │
│ │ └─static
│ │ ├─css
│ │ ├─img
│ │ └─js
│ │
│ └─webapp
│ │ index.jsp
│ │
│ └─WEB-INF
│ │ web.xml
│ │
│ └─view
│ │ login.jsp
│ │
│ ├─error
│ │ 500.jsp
│ ├─jsp
│ main.jsp
│
└─test
└─java
UtilTest.java
標(biāo)準(zhǔn)的maven項(xiàng)目結(jié)構(gòu),其中Java下是dao、service、controller ,還有實(shí)體類映射entity,其他配置config
三、resources下的應(yīng)用配置文件application.properties
#server.port=9090 # 數(shù)據(jù)庫(kù)訪問配置 # 主數(shù)據(jù)源,默認(rèn)的 spring.datasource.type=com.alibaba.druid.pool.DruidDataSource spring.datasource.url=jdbc:mysql://localhost:3306/test spring.datasource.username= root spring.datasource.password= root spring.datasource.driverClassName = com.mysql.jdbc.Driver # 下面為連接池的補(bǔ)充設(shè)置,應(yīng)用到上面所有數(shù)據(jù)源中 # 初始化大小,最小,最大 spring.datasource.initialSize=5 spring.datasource.minIdle=5 spring.datasource.maxActive=20 # 配置獲取連接等待超時(shí)的時(shí)間 spring.datasource.maxWait=60000 # 配置間隔多久才進(jìn)行一次檢測(cè),檢測(cè)需要關(guān)閉的空閑連接,單位是毫秒 spring.datasource.timeBetweenEvictionRunsMillis=60000 # 配置一個(gè)連接在池中最小生存的時(shí)間,單位是毫秒 spring.datasource.minEvictableIdleTimeMillis=300000 spring.datasource.validationQuery=SELECT 1 FROM DUAL spring.datasource.testWhileIdle=true spring.datasource.testOnBorrow=false spring.datasource.testOnReturn=false # 打開PSCache,并且指定每個(gè)連接上PSCache的大小 spring.datasource.poolPreparedStatements=true spring.datasource.maxPoolPreparedStatementPerConnectionSize=20 # 配置監(jiān)控統(tǒng)計(jì)攔截的filters,去掉后監(jiān)控界面sql無法統(tǒng)計(jì),'wall'用于防火墻 spring.datasource.filters=stat,wall,log4j # 通過connectProperties屬性來打開mergeSql功能;慢SQL記錄 spring.datasource.connectionProperties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000 # 合并多個(gè)DruidDataSource的監(jiān)控?cái)?shù)據(jù) spring.datasource.useGlobalDataSourceStat=true #JPA Configuration: spring.jpa.database=MYSQL # Show or not log for each sql query spring.jpa.show-sql=false spring.jpa.generate-ddl=true # Hibernate ddl auto (create, create-drop, update) spring.jpa.hibernate.ddl-auto=create #spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect spring.jpa.hibernate.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy #spring.jpa.database=org.hibernate.dialect.MySQL5InnoDBDialect spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect spring.mvc.view.prefix=/WEB-INF/view/ spring.mvc.view.suffix=.jsp #spring.resources.static-locations=classpath:/resources/,classpath:/static/
四、啟動(dòng)應(yīng)用主類文件 Application.java
package com.zsx;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
@SpringBootApplication
@ServletComponentScan // 掃描使用注解方式的servlet
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
若需要部署到外部的tomcat容器中,則添加下面類即可。
package com.zsx;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
/**
* 修改啟動(dòng)類,繼承 SpringBootServletInitializer 并重寫 configure 方法
* @author ZSX
*
*/
public class SpringBootStartApplication extends SpringBootServletInitializer {
private static final Logger logger = LoggerFactory.getLogger(SpringBootStartApplication.class);
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(Application.class);
}
}
五、數(shù)據(jù)庫(kù)連接池Druid的配置
package com.zsx.common.config;
import java.sql.SQLException;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import com.alibaba.druid.pool.DruidDataSource;
/**
* DruidDBConfig類被@Configuration標(biāo)注,用作配置信息;
* DataSource對(duì)象被@Bean聲明,為Spring容器所管理,
* @Primary表示這里定義的DataSource將覆蓋其他來源的DataSource。
* @author ZSX
*jdbc.url=${jdbc.url}
*最新的支持方式如下:
*jdbc.url=@jdbc.url@
*/
@Configuration
public class DruidDBConfig {
// private Logger logger = LoggerFactory.getLogger(DruidDBConfig.class);
@Value("${spring.datasource.url}")
private String dbUrl;
@Value("${spring.datasource.username}")
private String username;
@Value("${spring.datasource.password}")
private String password;
@Value("${spring.datasource.driverClassName}")
private String driverClassName;
@Value("${spring.datasource.initialSize}")
private int initialSize;
@Value("${spring.datasource.minIdle}")
private int minIdle;
@Value("${spring.datasource.maxActive}")
private int maxActive;
@Value("${spring.datasource.maxWait}")
private int maxWait;
@Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
private int timeBetweenEvictionRunsMillis;
@Value("${spring.datasource.minEvictableIdleTimeMillis}")
private int minEvictableIdleTimeMillis;
@Value("${spring.datasource.validationQuery}")
private String validationQuery;
@Value("${spring.datasource.testWhileIdle}")
private boolean testWhileIdle;
@Value("${spring.datasource.testOnBorrow}")
private boolean testOnBorrow;
@Value("${spring.datasource.testOnReturn}")
private boolean testOnReturn;
@Value("${spring.datasource.poolPreparedStatements}")
private boolean poolPreparedStatements;
@Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
private int maxPoolPreparedStatementPerConnectionSize;
@Value("${spring.datasource.filters}")
private String filters;
@Value("{spring.datasource.connectionProperties}")
private String connectionProperties;
@Bean // 聲明其為Bean實(shí)例
@Primary // 在同樣的DataSource中,首先使用被標(biāo)注的DataSource
public DataSource dataSource() {
DruidDataSource datasource = new DruidDataSource();
datasource.setUrl(this.dbUrl);
datasource.setUsername(username);
datasource.setPassword(password);
datasource.setDriverClassName(driverClassName);
// configuration
datasource.setInitialSize(initialSize);
datasource.setMinIdle(minIdle);
datasource.setMaxActive(maxActive);
datasource.setMaxWait(maxWait);
datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
datasource.setValidationQuery(validationQuery);
datasource.setTestWhileIdle(testWhileIdle);
datasource.setTestOnBorrow(testOnBorrow);
datasource.setTestOnReturn(testOnReturn);
datasource.setPoolPreparedStatements(poolPreparedStatements);
datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
try {
datasource.setFilters(filters);
} catch (SQLException e) {
}
datasource.setConnectionProperties(connectionProperties);
return datasource;
}
}
springboot里默認(rèn)使用tomcat的上傳文件大小限制,即1MB, 修改用下面的配置類:
import javax.servlet.MultipartConfigElement;
import org.springframework.boot.web.servlet.MultipartConfigFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class MultipartConfig {
@Bean
public MultipartConfigElement multipartConfigElement(){
MultipartConfigFactory factory = new MultipartConfigFactory();
factory.setMaxFileSize("10MB");
factory.setMaxRequestSize("10MB");
return factory.createMultipartConfig();
}
}
六、開啟Druid的數(shù)據(jù)庫(kù)監(jiān)控配置
1、配置Filter
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebInitParam;
import com.alibaba.druid.support.http.WebStatFilter;
/**
* 配置druid監(jiān)控統(tǒng)計(jì)功能
* 配置Filter
* @author ZSX
*
*/
@WebFilter(filterName = "druidWebStatFilter", urlPatterns = "/*",
initParams = {
@WebInitParam(name="exclusions",value="*.js,*.gif,*.jpg,*.bmp,*.png,*.css,*.ico,/druid/*")// 忽略資源
}
)
public class DruidStatFilter extends WebStatFilter {
}
2、 配置web訪問的servlet
import javax.servlet.annotation.WebInitParam;
import javax.servlet.annotation.WebServlet;
import com.alibaba.druid.support.http.StatViewServlet;
/**
* 配置druid監(jiān)控統(tǒng)計(jì)功能
* 在SpringBoot項(xiàng)目中基于注解的配置,如果是web.xml配置,按規(guī)則配置即可
* @author ZSX
*
*/
@WebServlet(urlPatterns = "/druid/*",
initParams = {
// @WebInitParam(name = "allow", value = "192.168.16.110,127.0.0.1"), // IP白名單 (沒有配置或者為空,則允許所有訪問)
// @WebInitParam(name="deny",value="192.168.16.111"), // IP黑名單 (存在共同時(shí),deny優(yōu)先于allow)
@WebInitParam(name="loginUsername",value="druid"),// 用戶名
@WebInitParam(name="loginPassword",value="druid"),// 密碼
@WebInitParam(name="resetEnable",value="false")// 禁用HTML頁(yè)面上的“Reset All”功能
}
)
public class DruidStatViewServlet extends StatViewServlet {
}
這樣啟動(dòng)項(xiàng)目后在瀏覽器中輸入地址:端口/druid,就可以看到druid的監(jiān)控web頁(yè)面了
七、 攔截器配置
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
public class WebAppConfigurer extends WebMvcConfigurerAdapter {
/**
* 配置攔截器
*/
@Override
public void addInterceptors(InterceptorRegistry registry) {
// TODO Auto-generated method stub
// 多個(gè)攔截器組成一個(gè)攔截器鏈
// addPathPatterns 用于添加攔截規(guī)則
// excludePathPatterns 用戶排除攔截
registry.addInterceptor(new AuthInterceptor()).addPathPatterns("/**");
super.addInterceptors(registry);
}
/**
* 添加自定義的靜態(tài)資源映射
這里使用代碼的方式自定義目錄映射,并不影響Spring Boot的默認(rèn)映射,可以同時(shí)使用。
*/
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
// registry.addResourceHandler("/new/**").addResourceLocations("classpath:/new/");
// registry.addResourceHandler("/**").addResourceLocations("/");
super.addResourceHandlers(registry);
}
}
八、swagger發(fā)布api測(cè)試配置(可忽略)
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
@Configuration
@EnableSwagger2
public class Swagger2 {
@Bean
public Docket createRestApi(){
return new Docket(DocumentationType.SWAGGER_2)
.apiInfo(apiInfo())
.select()
.apis(RequestHandlerSelectors.basePackage("com.zsx.controller.api"))
.paths(PathSelectors.any())
.build();
}
private ApiInfo apiInfo(){
return new ApiInfoBuilder()
.title("Spring Boot中使用Swagger2構(gòu)建RESTful APIs")
.description("描述")
.termsOfServiceUrl("http://zsx.com.cn")
.version("1.0")
.build();
}
}
至此,所有的配置已完成,下面是一個(gè)操作數(shù)據(jù)的簡(jiǎn)單demo
九、實(shí)體類
@Entity
@Table(name = "t_user")
public class Tuser implements java.io.Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Long id;
@Column(name = "username")
private String userName;
@Column(name = "password")
private String passWord;
@Column(name = "email")
private String email;
@Column(name = "mobile")
private String mobile;
@Column(name = "nickname")
private String nickName;
// 省略getter 和 setter
}
十、dao層
1、使用jpa基本可以實(shí)現(xiàn)不寫sql,(但實(shí)際開發(fā)中,業(yè)務(wù)邏輯會(huì)很復(fù)雜,一點(diǎn)不寫sql完全不現(xiàn)實(shí))
2、注意添加@Repository注解, 添加JpaSpecificationExecutor繼承可以方便分頁(yè)
3、 看些jpa的查詢語法資料
import java.util.List;
import java.util.Map;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.data.repository.query.Param;
import org.springframework.stereotype.Repository;
@Repository
public interface TuserDao extends PagingAndSortingRepository<Tuser, Long>, JpaSpecificationExecutor<Tuser> {
Tuser findByUserName(String userName);
@Query("from Tuser t where id = :id")
List<Tuser> queryFamilyList(@Param("id") Long id, Pageable pageable);
}
十一、service和controller沒啥好說的,跟原先的一樣,下面再提供一個(gè)單元測(cè)試的demo
import java.util.List;
import javax.persistence.EntityManager;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.web.WebAppConfiguration;
import com.alibaba.fastjson.JSON;
import com.golden.Application;
import com.golden.dao.TUserDao;
import com.golden.entity.Tuser;
import com.golden.util.GeneratePageable;
@RunWith(SpringJUnit4ClassRunner.class)
//指定我們SpringBoot工程的Application啟動(dòng)類
@SpringApplicationConfiguration(classes = Application.class)
//由于是Web項(xiàng)目,Junit需要模擬ServletContext,因此我們需要給我們的測(cè)試類加上@WebAppConfiguration
@WebAppConfiguration
public class UtilTest {
@Autowired
private TUserDao dao;
@Autowired
private EntityManager em;
@Test
public void test1(){
dao.findByUserName("admin");
}
@Test
public void test2(){
// 使用jpa提供的分頁(yè)類
java.util.List<Order> list = new ArrayList<Sort.Order>();
Order order = new Order(Direction.DESC, "createTime");
list.add(order);
Sort sort = new Sort(list);
Pageable pageable = new PageRequest(0, 10, sort);
Page<Tuser> findAll = dao.findAll(pageable);
}
@Test
public void test3(){
EntityManager em = dao.getEntityManager();
Query query = em.createNativeQuery("select * from t_user limit 1");
Object singleResult = query.getSingleResult();
System.out.println(singleResult);
}
/*
//執(zhí)行原生SQL
Query nativeQuery = em.createNativeQuery(String sql);
//指定返回對(duì)象類型
nativeQuery.unwrap(SQLQuery.class).setResultTransformer(Transformers.aliasToBean( Class resultType));
//返回對(duì)象
List<T> resultList = nativeQuery.getResultList();
*/
}
后記:
不用Druid的可以把有關(guān)Druid的配置全部刪掉,swagger的同理
這里沒有使用hibernate.cfg.xml配置文件,主要習(xí)慣了在實(shí)體類里配置字段了,不怎么用hibernate的映xml文件了,但其實(shí)配置起來跟springmvc項(xiàng)目一樣
說實(shí)話這里使用jpa操作數(shù)據(jù)庫(kù),沒感覺有多方便,因?yàn)榭傆懈鞣N奇葩的需求,當(dāng)然也可能是我沒深入研究,所以建議改用Mybatis,這個(gè)我會(huì)再寫一篇springboot加mybatis的配置教程的,最后,還可以使用原生的sql查詢,即使用單元測(cè)試?yán)锏腅ntityManager對(duì)象去執(zhí)行sql,返回結(jié)果可以指定對(duì)象類型,也很方便
還需要注意的一個(gè)點(diǎn)是靜態(tài)文件的存放位置,這個(gè)跟原先的項(xiàng)目不一樣,原先是在webapp下,但springboot是默認(rèn)放在resources下的static目錄下的,還有其他默認(rèn)目錄和配置,自行搜索
以上就是本文的全部?jī)?nèi)容,希望對(duì)大家的學(xué)習(xí)有所幫助,也希望大家多多支持腳本之家。
- spring boot jpa寫原生sql報(bào)Cannot resolve table錯(cuò)誤解決方法
- Spring Boot jpa Service層代碼實(shí)例
- 詳解SpringBoot實(shí)現(xiàn)JPA的save方法不更新null屬性
- SpringBoot Data JPA 關(guān)聯(lián)表查詢的方法
- 詳解spring boot jpa整合QueryDSL來簡(jiǎn)化復(fù)雜操作
- springboot使用JPA時(shí)間類型進(jìn)行模糊查詢的方法
- SpringBoot集成Spring Data JPA及讀寫分離
- Spring Boot中使用Spring-data-jpa實(shí)現(xiàn)數(shù)據(jù)庫(kù)增刪查改
- springboot jpa分庫(kù)分表項(xiàng)目實(shí)現(xiàn)過程詳解
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