架构：第三章：单一(伪分布式)架构之SSM整合

2022-09-28 11:38:56 浏览数 (1)

单一(伪分布式)架构之使用Maven建立各个工程之间的依赖、继承、聚合关系 SSM jar包依赖统一管理 工程：parent pom.xml

代码语言：javascript复制
<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</groupId>
  <artifactId>parent</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  <modules>
      <module>common</module>
      <module>ui-manager</module>
      <module>component</module>
  </modules>
  
  <!-- 声明properties对依赖版本进行统一管理 -->
    <properties>
        <spring.version>4.0.0.RELEASE</spring.version>
    </properties>
  <!-- 依赖信息的统一管理 -->
<dependencyManagement>
    <dependencies>
        <!-- Spring依赖 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- Spring辅助依赖 -->
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.6.8</version>
        </dependency>
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.2</version>
        </dependency>

        <!-- 数据库相关依赖 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.37</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.31</version>
        </dependency>
        <!-- Mybatis相关依赖 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.2.8</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.2</version>
        </dependency>

        <!-- Mybatis的PageHelper插件依赖 -->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper</artifactId>
            <version>4.0.0</version>
        </dependency>

        <!-- 日志打印相关 -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.7</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.7</version>
        </dependency>

        <!-- 文件上传 -->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.1</version>
        </dependency>

        <!-- JSTL标签 -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!-- junit依赖 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

        <!-- servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>

        <!-- jsp-api -->
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.1.3-b06</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</dependencyManagement>
</project>

建库建表SQL

代码语言：javascript复制
CREATE DATABASE IF NOT EXISTS `atcrowdfunding` CHARACTER SET utf8 COLLATE utf8_bin;
USE atcrowdfunding;
create table IF NOT EXISTS t_user
(
   id                   int not null auto_increment,
   loginacct            varchar(255) not null,
   userpswd             char(32) not null,
   username             varchar(255) not null,
   email                varchar(255) not null,
   createtime           char(19),
   primary key (id)
);

Mybatis相关 MyBatis配置文件

文件名：mybatis-config.xml

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<?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>

创建MyBatis逆向工程 在其他工程之外创建另外一个工程

pom.xml设定

代码语言：javascript复制
<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</groupId>
  <artifactId>reverse</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  
  <!-- 这个依赖是为了避免生成Mapper接口后报错，不影响资源生成过程 -->
    <dependencies>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.2.8</version>
        </dependency>
    </dependencies>
    
    <!-- 配置逆向工程的Maven插件 -->
    <build>
        <!-- plugins：构建过程中用到的插件 -->
        <plugins>
            <!-- plugin：具体插件 -->
            <plugin>
                <!-- MyBatis逆向工程插件坐标 -->
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.0</version>
    
                <!-- 插件工作过程中用到的依赖 -->
                <dependencies>
                    <dependency>
                        <groupId>org.mybatis.generator</groupId>
                        <artifactId>mybatis-generator-core</artifactId>
                        <version>1.3.2</version>
                    </dependency>
                    <dependency>
                        <groupId>com.mchange</groupId>
                        <artifactId>c3p0</artifactId>
                        <version>0.9.2</version>
                    </dependency>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>5.1.8</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>
  
</project>

逆向工程配置文件：generatorConfig.xml

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
              PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
              "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>

    <context id="tables" targetRuntime="MyBatis3Simple" defaultModelType="flat">
        <commentGenerator>
            <!-- 是否去除自动生成的注释 true:是;false:否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>

        <!--数据库连接的信息：驱动类、连接地址、用户名、密码 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/atcrowdfunding" userId="root"
            password="root">
        </jdbcConnection>

        <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 
            和 NUMERIC 类型解析为java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetProject:生成Entity类的路径 -->
        <javaModelGenerator targetProject=".srcmainjava"
            targetPackage="com.entity">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
            <!-- 从数据库返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!-- targetProject:XxxMapper.xml映射文件生成的路径 -->
        <sqlMapGenerator targetProject=".srcmainjava"
            targetPackage="com.component.mapper">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>

        <!-- targetPackage：Mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
            targetProject=".srcmainjava" targetPackage="com.component.mapper">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
        </javaClientGenerator>

        <!-- 数据库表名字和我们的entity类对应的映射指定 -->
        <table tableName="t_user" domainObjectName="UserDO" />

    </context>
</generatorConfiguration>

生成资源的Maven命令：mybatis-generator:generate

资源归位F5刷新项目

复制文件到其他项目

Spring和MyBatis整合 在common工程加入Spring和MyBatis整合需要的依赖 pom.xml

代码语言：javascript复制
<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
    </dependency>
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib</artifactId>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
    </dependency>
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-mapper-asl</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>druid</artifactId>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
    </dependency>
</dependencies>

在ui-manger项目中加入

jdbc.properties

代码语言：javascript复制
jdbc.user=root
jdbc.password=root
jdbc.url=jdbc:mysql://localhost:3306/atcrowdfunding?rewriteBatchedStatements=true&amp;useUnicode=true&amp;characterEncoding=utf8
jdbc.driver=com.mysql.jdbc.Driver
jdbc.initialSize=20
jdbc.minIdle=10
jdbc.maxActive=50
jdbc.maxWait=10000
jdbc.timeBetweenEvictionRunsMillis=60000
jdbc.minEvictableIdleTimeMillis=300000
jdbc.testWhileIdle=true

log4j.properties

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# For JBoss: Avoid to setup Log4J outside $JBOSS_HOME/server/default/deploy/log4j.xml!
# For all other servers: Comment out the Log4J listener in web.xml to activate Log4J.
# DEBUG < INFO < WARN < ERROR < FATAL
log4j.rootLogger=DEBUG, a, logfile

log4j.appender.a=org.apache.log4j.ConsoleAppender
log4j.appender.a.layout=org.apache.log4j.PatternLayout
log4j.appender.a.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,S} %-5p [%c] %l - %m%n

log4j.appender.logfile=org.apache.log4j.RollingFileAppender
log4j.appender.logfile.File=D:/atcrowdfunding.log
log4j.appender.logfile.MaxFileSize=512KB
# Keep three backup files.
log4j.appender.logfile.MaxBackupIndex=3 
# Pattern to output: date priority [category] - message
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

spring-tx.xml

代码语言：javascript复制
<?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:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop"
    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-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">

    <!-- 引入外部属性文件 -->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!-- 配置自动扫描的包 -->
    <context:component-scan base-package="com.component.service.impl"/>
    <!-- 配置数据源 -->
    <bean id="dataSource"
        class="com.alibaba.druid.pool.DruidDataSource">
        <property name="username" value="${jdbc.user}" />
        <property name="password" value="${jdbc.password}" />
        <property name="url" value="${jdbc.url}" />
        <property name="driverClassName" value="${jdbc.driver}" />
        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="${jdbc.initialSize}" />
        <property name="minIdle" value="${jdbc.minIdle}" />
        <property name="maxActive" value="${jdbc.maxActive}" />
        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="${jdbc.maxWait}" />
        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis"
            value="${jdbc.timeBetweenEvictionRunsMillis}" />
        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis"
            value="${jdbc.minEvictableIdleTimeMillis}" />
        <property name="testWhileIdle" value="${jdbc.testWhileIdle}" />
    </bean>
    
    <!-- 配置SqlSessionFactoryBean -->
    <!-- SqlSessionFactoryBean实现了FactoryBean接口，所以这里配置的bean返回的对象是SqlSessionFactory的对象 -->
    <!-- SqlSessionFactoryBean将创建SqlSessionFactory对象的繁琐细节进行了封装和屏蔽 -->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 装配数据源 -->
        <property name="dataSource" ref="dataSource"/>
        
        <!-- 指定MyBatis配置文件位置 -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        
        <!-- 配置Mapper配置文件路径 -->
        <property name="mapperLocations" value="classpath:mapper/*Mapper.xml"></property>
        
    </bean>
    
    <!-- 为Mapper接口的扫描器指定Mapper接口所在包 -->
    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 指定Mapper接口所在的包 -->
        <property name="basePackage" value="com.component.mapper"/>
    </bean>
    
    <!-- 配置声明式事务 -->
    <!-- 配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 装配数据源 -->
        <property name="dataSource" ref="dataSource"/>
    </bean>
    
    <!-- 配置事务切面的切入点表达式 -->
    <aop:config>
        <aop:pointcut expression="execution(* *..*Service.*(..))" id="txPointCut"/>
        <!-- 将切入点表达式和事务通知配置关联起来 -->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    </aop:config>
    
    <!-- 配置事务通知属性 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="list*" read-only="true"/>
            <tx:method name="count*" read-only="true"/>
            <!--rollback-for属性：指定事务回滚的异常 -->
            <!--propagation属性：事务的传播行为 -->
            <!--REQUIRED：当前方法必须运行在事务中，但如果当前线程上已经开启了事务，则在当前事务中运行 -->
            <!--REQUIRES_NEW：当前方法必须运行在事务中，而且一定要开启一个新事务，在自己的事务中运行。避免在共用事务时其他方法操作失败导致当前方法回滚。 -->
            <tx:method name="remove*" rollback-for="java.lang.Exception" propagation="REQUIRES_NEW"/>
            <tx:method name="save*" rollback-for="java.lang.Exception" propagation="REQUIRES_NEW"/>
            <tx:method name="update*" rollback-for="java.lang.Exception" propagation="REQUIRES_NEW"/>
        </tx:attributes>
    </tx:advice>

</beans>

测试类

代码语言：javascript复制
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:spring-tx.xml")
public class AtCrowdfundingTest {
    
    @Autowired
    private DataSource dataSource;
    
    @Test
    public void testDataSource() throws SQLException {
        Connection connection = dataSource.getConnection();
        System.out.println(connection);
    }

}

将spring-tx.xml,jdbc.properties文件放到测试src/test/resources下 如果出现下列错误

发现报错add添加junit.jar和spring-test

或者在ui-manger项目的pom.xml文件中

代码语言：javascript复制
<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>
  <parent>
    <groupId>com</groupId>
    <artifactId>parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>ui-manager</artifactId>
  <packaging>war</packaging>
  <dependencies>
      <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
      </dependency>
      <dependency>
          <groupId>com</groupId>
          <artifactId>component</artifactId>
          <version>0.0.1-SNAPSHOT</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-test</artifactId>
      </dependency>
  </dependencies>
</project>

如果还有报错

在common项目的pom.xml中添加

代码语言：javascript复制
 <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
</dependency>

Spring和SpringMVC整合 创建SpringMVC的配置文件 spring-mvc.xml

在common工程中加入Web开发相关依赖，之前如果添加过就不用再添加了

代码语言：javascript复制
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
    </dependency>
    <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
    </dependency>

在ui-manger工程加入Web开发相关依赖

代码语言：javascript复制
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <scope>provided</scope>
    </dependency>

在spring-mvc.xml中加入名称空间

配置spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>

代码语言：javascript复制
    <!-- 配置自动扫描的包 -->
    <context:component-scan base-package="com.component.handler"/>
    
    <!-- 配置视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    
    <!-- 标配 -->
    <mvc:annotation-driven/>
    
    <!-- DefaultServletHandler[可选]
    计划在web.xml中让DispatcherServlet映射扩展名，所以DefaultServletHandler可以不配置。 -->
    <mvc:default-servlet-handler/>

</beans>

在web.xml中配置

web.xml

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<?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_2_5.xsd" version="2.5">
  <display-name>ui-manager</display-name>
<!-- needed for ContextLoaderListener -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring-tx.xml</param-value>
</context-param>

<!-- Bootstraps the root web application context before servlet initialization -->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- DispatcherServlet        -->
<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<servlet>
    <servlet-name>springDispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
    <servlet-name>springDispatcherServlet</servlet-name>
    <url-pattern>*.html</url-pattern>
</servlet-mapping>

<!-- CharacterEncodingFilter -->
<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>

<!-- HiddenHttpMethodFilter -->
<filter>
    <filter-name>HiddenHttpMethodFilter</filter-name>
    <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>HiddenHttpMethodFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>

如果有其他问题可能是jar包下载失败，可以将你的maven仓库删除重新下载，你也可以按alt F5，选择项目更新，也可能是你的eclipse没有maven配置或者评论下方留言，如果有时间我可以帮你看看

伪静态效果 通过让DispatcherServlet映射*.html实现伪静态。可以将由SpringMVC处理的动态请求从表面看起来像是访问一个HTML静态页面，这样让项目不容易被猜到用什么技术实现的。 给黑客入侵制造障碍。 一定程度上有利于SEO优化：让搜索引擎更容易找到我们的网站。

我自己写好的项目，完整版的SSM整合reverse和parent父项目下有子项目，导入带有spring插件的eclipse时，子项目从父项目中导入就即可，注意有spring插件的eclipse要maven配置

我们做个首页展示 首页展示 创建index.jsp

可能报错，解决方案

在index.jsp中执行转发操作

代码语言：javascript复制
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
    request.getRequestDispatcher("/index.html").forward(request, response);
%>

为/index.html地址映射一个handler方法

代码语言：javascript复制
package com.component.handler;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class PortalMainHandler {
    
    @RequestMapping("/index")
    public String showIndexPage() {
        
        //准备首页要显示的数据……
        
        return "portal/main";
    }

}

经过spring-mvc.xml的视图解析器拼接，我们创建main.jsp

页面自己写，现在直接

就可以看到自己的页面了

还可以将原型代码（前端人员写的）加入main.jsp中 但是加上base标签

代码语言：javascript复制
<base href="http://${pageContext.request.serverName }:${pageContext.request.serverPort}${pageContext.request.contextPath}/"/>

注意点1：端口号和contextPath之间不要再加“/”。 注意点2：contextPath后面要加“/”。

样式加一下

xml mybatis java spring mvc

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