从简到繁——SSM个人博客搭建完全记录【1】开发环境搭建和数据库表设计

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/van_brilliant/article/details/79601662

前言

  今天是2018年3月16日，SSM框架学了有一段时间了，但一直没有自己独立完成一个项目，自己对SSM的理解也仅仅停留在会简单使用的层次上。很多概念只有在实际操作中才会清晰，所以想从个人网站的搭建开始，慢慢从使用SSM走向了解到最后深入底层实现。在SSM框架、SpringBoot等Java框架之外，后端开发还有一众优良的实践：缓存、分布式、集群等，囿于现在水平的限制，也为了体现从简到繁这个主题，我会在以后代码重构的过程中，一步步学习使用这些工具，使用上这些技术。每次大版本的迭代，我都会把代码上传到Github，项目搭建的全过程也会记录在此。

项目概述

  本项目是一个基于Java SSM框架开发的单用户个人博客系统，具有博客发表、修改、评论、后台管理等功能。项目分为前台和后台，前台负责展示业务，前后端适当分离；后台需要登录，负责文章、评论增删查改业务。

开发环境搭建

1、开发工具

• CentOS 7.4
• JDK 1.8.0_162
• Intellij Idea 2017.3 (Idea确实是个好东西，的确比Eclipse好用一些)
• Apache - Tomcat 8.5.29
• MySQL 5.7

2、新建项目

•   选择Maven（一个项目构建、依赖管理工具，我下载的Idea里自带Maven插件。不了解的可参考这篇文章：Maven使用入门。另外为了加快jar包下载速度可以去.m2文件夹下面的setting.xml配置下载源，改为国内镜像），勾选Create from archetype，选择maven-archetype-webapp这个模版，点击Next。

• 填写GroupId、ArtifactId，点击Next。

• 选择本地Maven仓库位置，点击右侧的+号，然后添加一个属性archetypeCatalog=internal。至于为什么要添加可以看这篇文章：解决IDEA 创建Maven项目速度慢问题。

• 继续点击Netxt、Fininsh、Import Changes，如果Idea的控制台里出现BUILD SUCCESS的字样，那么说明项目初步创建成功了。但此时目录结构还不适合SSM项目，我们把目录修改成如下所示，右键选择Mark Directory as标记文件夹的作用：
• 配置pom.xml：

<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>com.vansl</groupId>
  <artifactId>myblog</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>myblog</name>
  <url>http://maven.apache.org</url>

  <!--版本号-->
  <properties>
    <junit.version>4.12</junit.version>
    <slf4j.version>1.7.21</slf4j.version>
    <mysql.driver.version>5.1.35</mysql.driver.version>
    <servlet.version>3.1.0</servlet.version>
    <jsp.version>2.2</jsp.version>
    <jstl.version>1.2</jstl.version>
    <spring.version>4.3.3.RELEASE</spring.version>
    <aspect.version>1.5.4</aspect.version>
    <mybatis.version>3.4.0</mybatis.version>
    <mybatis.spring.version>1.3.0</mybatis.spring.version>
    <commons-dbcp.version>1.4</commons-dbcp.version>
    <pagehelper.version>4.0.0</pagehelper.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <!--项目依赖 -->
  <dependencies>

    <!--单元测试-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
      <scope>test</scope>
    </dependency>

    <!--日志-->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j.version}</version>
    </dependency>

    <!--mysql驱动包-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.driver.version}</version>
    </dependency>

    <!--j2ee相关包-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>${servlet.version}</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>${jsp.version}</version>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>${jstl.version}</version>
    </dependency>

    <!-- spring -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-oxm</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>${aspect.version}</version>
    </dependency>

    <!-- mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>${mybatis.spring.version}</version>
    </dependency>

    <!--用于在applicationContext.xml中配置数据库 -->
    <dependency>
      <groupId>commons-dbcp</groupId>
      <artifactId>commons-dbcp</artifactId>
      <version>${commons-dbcp.version}</version>
    </dependency>

    <!-- Mybatis分页插件 -->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>${pagehelper.version}</version>
    </dependency>

    <!-- 上传组件-->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.3</version>
    </dependency>

    <!-- json -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.4</version>
    </dependency>

    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.9.4</version>
    </dependency>

    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.9.4</version>
    </dependency>

    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.47</version>
    </dependency>

    <!--工具包-->
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>3.4</version>
    </dependency>

    <!--UEetior-->
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>

    <dependency>
      <groupId>commons-codec</groupId>
      <artifactId>commons-codec</artifactId>
      <version>1.10</version>
    </dependency>

    <dependency>
      <groupId>org.json</groupId>
      <artifactId>json</artifactId>
      <version>20160212</version>
    </dependency>

  </dependencies>

  <build>

    <plugins>
      <!-- 配置tomcat插件 -->
      <plugin>
        <groupId>org.apache.tomcat.maven</groupId>
        <artifactId>tomcat8-maven-plugin</artifactId>
        <configuration>
          <port>80</port>
          <path>/</path>
        </configuration>
      </plugin>
    </plugins>

    <resources>
        <resource>
          <directory>src/main/java</directory>
          <includes>
            <include>**/*.xml</include>
          </includes>
        </resource>
    </resources>

  </build>

</project>

• 配置web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
          http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">

  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
  </welcome-file-list>

  <!-- 监听器加载context-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!-- 加载spring容器 -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/applicationContext-*.xml</param-value>
  </context-param>

  <!-- 编码过滤器 -->
  <filter>
    <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <!-- log4j日志输出 -->
  <listener>
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
  </listener>
  <context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>classpath:config/log4j.properties</param-value>
  </context-param>

  <!--配置DispatcherServlet-->
  <servlet>
    <servlet-name>SpringMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--SpringMVC配置文件-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring/spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
    <async-supported>true</async-supported>
  </servlet>

  <!--配置DispatcherServlet映射-->
  <servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

• 在resources文件夹下新建spring文件夹，配置spring-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.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.xsd">

  <!-- 启用自动扫描 -->
  <context:component-scan base-package="com.vansl.controller" />

  <!-- 设置配置方案 -->
  <mvc:annotation-driven />

  <!-- 视图解析器 -->
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
  </bean>

  <!-- 静态资源映射 -->
  <mvc:resources location="/WEB-INF/statics/css/" mapping="/css/**"/>
  <mvc:resources location="/WEB-INF/statics/js/" mapping="/js/**"/>
  <mvc:resources location="/WEB-INF/statics/images/" mapping="/images/**"/>

  <!--文件上传解析器 -->
  <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <!-- 设定默认编码 -->
    <property name="defaultEncoding" value="UTF-8"></property>
    <!-- 设定文件上传的最大值5MB，5*1024*1024 -->
    <property name="maxUploadSize" value="5227520"></property>
  </bean>

</beans>

• 配置Spring容器，在spring文件夹下面新建applicationContext-service.xml、applicationContext-trans.xml、applicationContext-dao.xml，首先配置applicationContext-service.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

  <!-- 扫描包加载Service实现类 -->
  <context:component-scan base-package="com.vansl.service"></context:component-scan>
  
</beans>

• 然后配置用于事务管理的applicationContext-trans.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
	http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
	http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
	http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

  <!-- 事务管理器 -->
  <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <!-- 数据源 -->
    <property name="dataSource" ref="dataSource" />
  </bean>

  <!-- 通知 -->
  <tx:advice id="txAdvice" transaction-manager="transactionManager">
    <tx:attributes>
      <!-- 传播行为 -->
      <tx:method name="save*" propagation="REQUIRED" />
      <tx:method name="insert*" propagation="REQUIRED" />
      <tx:method name="add*" propagation="REQUIRED" />
      <tx:method name="create*" propagation="REQUIRED" />
      <tx:method name="delete*" propagation="REQUIRED" />
      <tx:method name="update*" propagation="REQUIRED" />
      <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
      <tx:method name="select*" propagation="SUPPORTS" read-only="true" />
      <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
    </tx:attributes>
  </tx:advice>

  <!-- 切面 -->
  <aop:config>
    <aop:advisor advice-ref="txAdvice"
                 pointcut="execution(* com.vansl.service.*.*(..))" />
  </aop:config>

</beans>

• 最后配置applicationContext-dao.xml，并新建mybatis和config文件夹分别用于存放sqlSessionFactory配置文件、数据库和日志及其他配置文件：

applicationContext-dao.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

  <!-- 加载配置文件 -->
  <context:property-placeholder location="classpath:config/*.properties" />

  <!-- 数据库连接池 -->
  <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
    <!-- 使用配置文件的配置 -->
    <property name="driverClassName" value="${jdbc.driver}" />
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.username}" />
    <property name="password" value="${jdbc.password}" />
    <property name="initialSize" value="10" />
    <property name="maxActive" value="10" />
    <property name="maxIdle" value="20" />
    <property name="minIdle" value="5" />
  </bean>

  <!-- 配置sqlsessionFactory -->
  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <!-- 加载配置文件 -->
    <property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"></property>
    <property name="dataSource" ref="dataSource"></property>
    <!-- 自动扫描mapper.xml文件 -->
    <property name="mapperLocations" value="classpath*:com/vansl/mapper/*.xml"></property>
  </bean>

  <!-- 自动扫描dao接口并实例化 -->
  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.vansl.dao"></property>
  </bean>

</beans>

SqlMapConfig.xml：

<?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>

  <plugins>
    <!-- Mybatis分页插件 -->
    <plugin interceptor="com.github.pagehelper.PageHelper">
      <!-- 设置数据库类型 Oracle,Mysql,MariaDB,SQLite,Hsqldb,PostgreSQL六种数据库-->
      <property name="dialect" value="mysql"/>
    </plugin>
  </plugins>

</configuration>

数据库和日志配置文件这里不再给出。

  接着配置tomcat服务器，点击运行，项目成功运行，此时浏览器显示404。接下来在controller包下新建HomeController.java，并在views下新建index.jsp：

package com.vansl.controller;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;

/**
 * @author: vansl
 * @create: 18-3-17 下午11:58
 */
@Controller
public class HomeController {
    //添加日志器
    private static final Logger logger = LoggerFactory.getLogger(HomeController.class);

    //action映射
    @RequestMapping("/index")
    public  String index(HttpServletRequest request){
        //输出日志文件
        logger.info("Build Success");
        //返回index.jsp
        return "index";
    }

}

  重启tomcat，访问http://localhost:8080/index，如果出现index.jsp，那么说明开发环境搭建成功了（另外在有欢迎页的时候输入http://localhost:8080也能访问index.jsp，原因不明，有待解释：点击打开链接）。

数据库设计

  初步设计了四张表以实现基本的登录、发表博客、评论以及管理功能。如下所示：

虽然是单用户的个人博客系统，但我还是设计了user这张表，并添加了用户角色字段进行用户权限管理。一是为了增加开发的完整度、复杂度，其次也可以方便拓展成多用户的系统。由此建表：

/**
 * @DATE 20:47 2018/3/21
 */

--
-- 数据库: `myblog`
--

--
-- 用户表
--
CREATE TABLE `user` (
  `id` INT NOT NULL AUTO_INCREMENT COMMENT '用户ID',
  `username` VARCHAR(30) NOT NULL COMMENT '用户名',
  `password` VARCHAR(30) NOT NULL COMMENT '用户密码',
  `role` VARCHAR(20) DEFAULT 'user' COMMENT '用户权限',
  UNIQUE (`username`),
  PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4;

--
-- 博客表
--
CREATE TABLE `blog` (
  `id` INT NOT NULL AUTO_INCREMENT COMMENT '博客ID',
  `title` VARCHAR(90) NOT NULL COMMENT '博客标题',
  `time` DATE NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '发表时间',
  `content` TEXT NOT NULL COMMENT '博客正文（包含html格式）',
  `text` TEXT NOT NULL COMMENT '博客正文（纯文本）',
  `pv` int NOT NULL COMMENT '博客点击量',
  `publish` INT(1) NOT NULL COMMENT '是否已发表，0已发表，1未发表（在草稿箱）',
  `user_id` INT NOT NULL COMMENT '用户ID',
  `type_id` INT NOT NULL COMMENT '分类ID',
  PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4;

--
-- 博客分类表
--
CREATE TABLE `blog_type` (
  `id` INT NOT NULL AUTO_INCREMENT COMMENT '分类ID',
  `type_name` VARCHAR(30) NOT NULL COMMENT '分类名称',
  `parent_id` INT NOT NULL COMMENT '父分类id',
  `user_id` INT NOT NULL COMMENT '用户ID',
  UNIQUE (`type_name`,`parent_id`),
  PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4;

--
-- 评论表
--
CREATE TABLE `blog_comment` (
  `id` INT NOT NULL AUTO_INCREMENT COMMENT '评论ID',
  `time` DATETIME NOT NULL  DEFAULT CURRENT_TIMESTAMP COMMENT '发表时间',
  `name` VARCHAR(30) NOT NULL COMMENT '评论者',
  `contact` VARCHAR(90) NOT NULL COMMENT '联系方式',
  `ip` VARCHAR(15) NOT NULL COMMENT '评论者ip',
  `address` TINYTEXT NOT NULL COMMENT '评论者地址',
  `content` TEXT NOT NULL COMMENT '评论内容',
  `blog_id` INT NOT NULL COMMENT '博客ID',
  PRIMARY KEY (`id`)
) ENGINE=INNODB DEFAULT CHARSET=utf8mb4;

把sql文件导入数据库：

执行成功。至此开发环境搭建和数据库表设计部分的工作就完成了。

参考

https://www.cnblogs.com/Sinte-Beuve/p/5730553.html