SpingMVC框架（二）

其他 2019-02-23 23:21:03 阅读次数: 0
版权声明：@Wrial https://blog.csdn.net/qq_42605968/article/details/87304534

上一篇是一个对SpringMVC的一个测试级别的使用，也算是初级使用了，专栏至此，前面也学习了Spring框架和Mybatis框架，那这篇博客就来简单的搭建一下SSM框架。

SSM框架的搭建

环境：

JDK8，IDEA编译工具或Eclipse（用IDEA演示），Maven项目管理工具。

开发步骤：

前言：在搭建ssm框架时，要一步一步，先搭建Spring和Mybatis，然后再加上SpingMVC。我在第一次搭建ssm时费了很大的力气，就是因为对Spring框架的掌握不熟练，加上没有一个井然有序的步骤，相信你看到我写的ssm框架搭建过程你会很轻松的搭建起来。

1.新建一个带有Maven的JavaWeb项目（同上一篇博客步骤）
在这里插入图片描述
可以填唯一标识和组名
在这里插入图片描述
建成项目
在这里插入图片描述
2.导入pom依赖，一次性导入以免后来需要多次导入

<?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>ssm</groupId>
  <artifactId>ssm</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>ssm Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!-- 第一部分：Spring 配置-->
    <!-- Spring core -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>
    <!-- Spring DAO -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.9.2</version>
    </dependency>

    <!-- Spring mvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.1.4.RELEASE</version>
    </dependency>

    <!-- 第二部分：Servlet web -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>taglibs</groupId>
      <artifactId>standard</artifactId>
      <version>1.1.2</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.4</version>
    </dependency>
    <!-- 第三部分：数据库和mybatis -->
    <!-- 数据库 -->
    <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.15</version>
    </dependency>
    <!-- 数据库连接池 -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>
    <!-- MyBatis -->
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.0</version>
    </dependency>

    <!-- mybatis-spring整合包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>
    <!-- 第四部分：日志 -->
    <!-- 实现slf4j接口并整合 -->
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>1.1.1</version>
    </dependency>

    <!--<dependency>-->
      <!--<groupId>com.fasterxml.jackson.core</groupId>-->
      <!--<artifactId>jackson-core</artifactId>-->
      <!--<version>2.7.3</version>-->
    <!--</dependency>-->
    <!--<dependency>-->
      <!--<groupId>com.fasterxml.jackson.core</groupId>-->
      <!--<artifactId>jackson-databind</artifactId>-->
      <!--<version>2.7.3</version>-->
    <!--</dependency>-->
    <!--<dependency>-->
      <!--<groupId>com.fasterxml.jackson.core</groupId>-->
      <!--<artifactId>jackson-annotations</artifactId>-->
      <!--<version>2.7.3</version>-->
    <!--</dependency>-->
  </dependencies>

  <build>
    <finalName>ssm</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

3.建立MVC的目录结构如下
在这里插入图片描述
4.整合Spring和Mybatis
（1）新建数据库数据表

-- MySQL dump 10.13  Distrib 8.0.13, for Win64 (x86_64)
--
-- Host: 127.0.0.1    Database: mybatis
-- ------------------------------------------------------
-- Server version	8.0.13

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
 SET NAMES utf8 ;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Table structure for table `user`
--

DROP TABLE IF EXISTS `user`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
 SET character_set_client = utf8mb4 ;
CREATE TABLE `user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(32) NOT NULL COMMENT '用户名称',
  `birthday` date DEFAULT NULL COMMENT '生日',
  `sex` char(1) DEFAULT NULL COMMENT '性别',
  `address` varchar(256) DEFAULT NULL COMMENT '地址',
  `uuid1` varchar(45) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=37 DEFAULT CHARSET=utf8;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `user`
--

LOCK TABLES `user` WRITE;
/*!40000 ALTER TABLE `user` DISABLE KEYS */;
INSERT INTO `user` VALUES (1,'王五',NULL,'2',NULL,NULL),(10,'张三','2014-07-10','1','北京市',NULL),(16,'张小明',NULL,'1','河南郑州',NULL),(24,'张三丰',NULL,'1','河南郑州',NULL),(25,'陈小明',NULL,'1','河南郑州',NULL),(26,'王五',NULL,NULL,NULL,NULL),(29,'张巅峰','1970-01-01','m','xxxx',NULL),(31,'张无极','1970-01-01','w','aaaaa',NULL),(32,'张无极','1970-01-01','w','aaaaa',NULL),(33,'张无极','1970-01-01','w','aaaaa',NULL),(34,'张无极','1970-01-01','w','aaaaa',NULL),(35,'张无极','1970-01-01','w','aaaaa',NULL),(36,'李太白','1970-01-01','m','aass','8dbcc2ce-2707-11e9-b029-54e1ada2cba5');

（2）配置数据库配置文件db.properties

jdbc.driverClass = com.mysql.cj.jdbc.Driver
jdbc.url = jdbc:mysql://localhost:3306/Mybatis?serverTimezone=UTC&useSSL=false&allowPublicKeyRetrieval=true
jdbc.user = root
jdbc.password = wrial.qq.com

(3)配置日志打印

# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

（4）配置Sping配置文件applicationContext.xml，并引入SpringMybatis的配置文件

<?xml version="1.0" encoding="UTF-8"?>
<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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">

    <!-- 使用annotation 自动注册bean,并保证@Required,@Autowired的属性被注入 -->
    <context:component-scan base-package="com">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <import resource="SpringMybatis.xml"/>

</beans>

（5）配置Spring代理Mybatis配置文件SpringMybatis.xml

<?xml version="1.0" encoding="UTF-8"?>
<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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd" >
    <!--配置jdbc c3p0    -->
    <context:property-placeholder location="classpath:db.properties"/>
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <property name="driverClass" value="${jdbc.driverClass}"/>
    <property name="jdbcUrl" value="${jdbc.url}"/>
    <property name="user" value="${jdbc.user}"/>
    <property name="password" value="${jdbc.password}"/>
    </bean>

    <!-- 结合Spring和Mybatis -->
    <bean id = "sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!--<property name="configLocation" value="SqlMapConfig.xml"/>-->
        <property name="typeAliasesPackage" value="com.pojo"/>
        <!-- 自动扫描mapping.xml文件 -->
        <property name = "mapperLocations" value="classpath:mapper/*.xml" />
    </bean>

    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->
    <bean class = "org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name = "basePackage" value="com.dao" />
        <property name = "sqlSessionFactoryBeanName" value = "sqlSessionFactory" />
    </bean>

    <!-- 定义事务 -->
    <bean id = "transactionManager"
          class = "org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name = "dataSource" ref = "dataSource" />
    </bean>
    <!-- 使用注解定义事务 -->
    <tx:annotation-driven transaction-manager = "transactionManager" />
    
</beans>

（6）配置Mybatis核心配置文件SqlMapConfig，因为在Spring可以和mybatis很好的融合，所以SqlMapConfig在目前阶段可为空，但要有文件头.dtd

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
</configuration>

4.自己写一个测试的pojo，dao，mapper或者用逆向工程生成(我测试使用的是Mybatis的数据表，没有新建)
pojo

package com.pojo;

import java.util.Date;

public class User {

    private Integer id;
    private String username;// 用户姓名
    private String sex;// 性别
    private Date birthday;// 生日
    private String address;// 地址
    private String uuid1;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    @Override
    public String toString() {
        return "User [id=" + id + ", username=" + username + ", sex=" + sex + ", birthday=" + birthday + ", address="
                + address + ", uuid1=" + uuid1 + "]";
    }

    public String getUuid1() {
        return uuid1;
    }

    public void setUuid1(String uuid1) {
        this.uuid1 = uuid1;
    }

}

dao

package com.dao;
import com.pojo.User;

import java.util.List;

public interface UserMapper {

    User getUserById(Integer id);

    List<User> getUserByLikeIt(String word);

}

mapper

<?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">
<!--动态代理的开发规则-->
<!--1.namespace 必须是接口全路径名-->
<!--2.xml的id要和方法名一致-->
<!--3.入参一致和parameterType一致-->
<!--4.返回值一致和resultType一致-->

<mapper namespace="com.dao.UserMapper">

    <select id="getUserById" parameterType="int" resultType="com.pojo.User">
        select *
        from mybatis.user
        where id = #{id}
    </select>

    <!--#{} 传入参数-->
    <!-- ${} 字符串拼接      如果入参是普通属性只能写value，pojo的话就写pojo-->
    <select id="getUserByLikeIt" parameterType="String" resultType="com.pojo.User">
        select username
        from user
        where username like '%${value}%'
    </select>

</mapper>

service

package com.service;

import com.pojo.User;

import java.util.List;

public interface UserService {

User SelectUserById();
}

serviceImpl

package com.service;

import com.dao.UserMapper;
import com.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;


@Service(value = "userService")
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public User SelectUserById() {
        User user =  userMapper.getUserById(29);
        return user;
    }
}

5.整合SpringMVC到项目
（1）application-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
       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-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    <!--设置包扫描-->
    <context:component-scan base-package="com.controller"/>

    <!--配置注解器驱动器，Spring为简化我们手动配置映射器和适配器，也支持json的数据响应-->
    <mvc:annotation-driven/>
    <!--配置视图解释器,省去写路径的步骤直接写jsp的视图名-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>

    </bean>
</beans>

(2)配置web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app xmlns="http://java.sun.com/xml/ns/javaee" version="2.5">
<!-- Spring核心配置文件-->
<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>classpath:Spring/applicationContext.xml</param-value>
</context-param>

<context-param>
  <param-name>log4jConfigLocation</param-name>
  <param-value>classpath:log4j.properties</param-value>
</context-param>

<!-- 编码过滤器 -->
<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>
</filter>
<filter-mapping>
  <filter-name>encodingFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>
<!-- spring监听器 -->
<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 防止spring内存溢出监听器，比如quartz -->
<listener>
  <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<!-- spring mvc servlet-->
<servlet>
  <servlet-name>SpringMVC</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <!--加载applicationContext-mvc-->
  <init-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:Spring/applicationContext-mvc.xml</param-value>
  </init-param>
  <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
  <servlet-name>SpringMVC</servlet-name>
  <!-- 此处也可以配置成 *.action 形式 -->
  <url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
  <welcome-file>/index.jsp</welcome-file>
</welcome-file-list>
<!-- session配置 -->
<session-config>
  <session-timeout>30</session-timeout>
</session-config>
</web-app>

（3）编写controller

package com.controller;

import com.pojo.User;
import com.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.annotation.Resource;
import java.util.List;

@Controller("userController")
public class UserController {
    @Resource(name = "userService")
    private UserService userService;

    @RequestMapping("findUser")
    public ModelAndView userList() {
        User user = userService.SelectUserById();
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("user1", user);
        modelAndView.setViewName("findUser");
        System.out.println("controller");
        System.out.println(user.toString());
        return modelAndView;
    }
}

（5）编写index.jsp和WEB-INF/jsp/findUser.jsp
index.jsp

<html>
<body>
<h2>Hello World!</h2>
</body>
</html>

findUser.jsp


<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2019/2/13
  Time: 23:33
  To change this template use File | Settings | File Templates.
--%>
<%@ page isELIgnored="false" contentType="text/html;charset=UTF-8" language="java" import="com.pojo.User" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt"  prefix="fmt"%>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h1>FindUser!</h1>
<tr>
    <td>${user1.id }</td>
    <td>${user1.username}</td>
    <td>${user1.birthday}</td>
    <%--<td><fmt:formatDate value="${user.birthday}" pattern="yyyy-MM-dd HH:mm:ss"/></td>--%>
    <td>${user1.sex }</td>
    <td>${user1.address}</td>
    <td>${user1.toString()}</td>
</tr>
</body>
</html>

至此，就简单的搭建了ssm项目了
测试结果
在这里插入图片描述
在这里插入图片描述
看到成功的页面有没有很高兴呢，反正我弄出来的时候贼高兴，因为我搭建的时候出了好多bug，一个一个往过踩坑哈哈哈,这次就到这里吧，SpringMVC的详细配置下次再讲吧！

今天被狗咬伤了，好难过，但是这还是不能阻挡我的脚步哈哈！



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