ssm的入门简单整合的一些总结

ssm的入门简单整合的一些总结：

这个，我是看的黑马的视频，感觉很好，推荐一下最新(idea版) mybatis-spring-springmvc-Java一站式学习 -java框架-ssm框架-idea

一些配置文件

applicationContext.xml文件：

用来配置spring，以及Spring用来整合Mybatis的

先扫描包；整合Mybatis来管理数据库；事务

<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">

    
    <context:component-scan base-package="cn.itcast">
        
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    context:component-scan>

    
    
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.cj.jdbc.Driver"/>
        <property name="jdbcUrl"
                  value="jdbc:mysql://localhost:3306/ssm?useSSL=false&serverTimezone=UTC&useUnicode=true&characterEncoding=UTF-8"/>
        <property name="user" value="root"/>
        <property name="password" value="123456"/>
    bean>

    
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    bean>

    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cn.itcast.dao"/>
    bean>


    
    
    <bean id="TransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    bean>

    
    <tx:advice id="teAdvice" transaction-manager="TransactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*"/>
        tx:attributes>
    tx:advice>

    
    <aop:config>
        <aop:advisor advice-ref="teAdvice" pointcut="execution(* cn.itcast.service.impl.*ServiceImpl.*(..))"/>
    aop:config>

beans>

springmvc.xml文件：

配置springmvc来管理Controller层：

先扫描包；再视图解析器来帮忙拼串；过滤资源、注解的支持

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    
    <context:component-scan base-package="cn.itcast" >
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    context:component-scan>

    
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
          <property name="prefix" value="/WEB-INF/pages/"/>
          <property name="suffix" value=".jsp"/>
    bean>
	
    
    <mvc:resources mapping="/js/**" location="/js/"/>
       
    

    
    <mvc:annotation-driven/>
beans>

web.xml文件：

想到过滤器、监听器、配置Servlet等

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
         http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
  <display-name>Archetype Created Web Applicationdisplay-name>

  
  <context-param>
    <param-name>contextConfigLocationparam-name>
    <param-value>classpath:applicationContext.xmlparam-value>
  context-param>

  
  <filter>
    <filter-name>CharacterEncodingFilterfilter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
    <init-param>
      <param-name>encodingparam-name>
      <param-value>UTF-8param-value>
    init-param>
  filter>
  <filter-mapping>
    <filter-name>CharacterEncodingFilterfilter-name>
    <url-pattern>/*url-pattern>
  filter-mapping>

  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
  listener>

  
  <servlet>
    <servlet-name>DispatcherServletservlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
    
    <init-param>
      <param-name>contextConfigLocationparam-name>
      <param-value>classpath:springmvc.xmlparam-value>
    init-param>
    
    <load-on-startup>1load-on-startup>
  servlet>
  <servlet-mapping>
    <servlet-name>DispatcherServletservlet-name>
    <url-pattern>/url-pattern>
  servlet-mapping>

web-app>

自己遇到的几个bug：

①Unmapped Spring configuration file: springmvc.xml

这是一个办法

也可以直接按idea提示来直接添加。我后面试的时候先创建applicationContest.xml，当我再创建springmvc.xml后，这个错误就自动消失了。

②Handler dispatch failed; nested exception is java.lang.AbstractMethodError: Receiver class com.mchange.v2.c3p0.impl.NewProxyResultSet does not define or inherit an implementation of the resolved method ‘abstract boolean isClosed()’ of interface java.sql.ResultSet.

这个应该说是使用c3p0时出现了错误。最好修改一下pom.xml文件里c3p0的坐标：

这个是我一开始写的（按照老师的）：但是后面我有修改其他的一些，改成了新的版本，总之导致c3p0这个用不了

<dependency> 
	<groupId>c3p0groupId> 
	<artifactId>c3p0artifactId> 
	<version>0.9.1.2version> 
	<type>jartype> 
	<scope>compilescope> 
dependency>

看了其他的一些人的，也是说这么改：

<dependency>
	<groupId>com.mchangegroupId>
	<artifactId>c3p0artifactId>
	<version>0.9.5.2version>
dependency>

但是当我用google搜索时，搜到了这个，github链接，可以康康：应该说是0.9.1.2版本有bug，换一下吧。

③tomcat的部署不清楚

我写一下主要两步，这里一定要自己弄懂！

war与war exploded的区别：

我建议自己先用war exploded，可以支持热部署。这个大家可以网上搜搜看。

④The content of element type “web-app” must match “(icon?,display-name?,description?,distributable?,context-param*,filter*,filter-mapping*,listener*,servlet*,servlet-mapping*,session-config?,mime-mapping*,welcome-file-list?,error-page*,taglib*,resource-env-ref*,resource-ref*,security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*,ejb-local-ref*)”.

这个我一开始懵了一会儿，但其实不要着急，仔细看看它这段话，或者翻译一下就是xml中的顺序问题：常见的比如说是先filter、listener、servlet…的顺序，这个顺序反了的话应该问题不大的。

⑤ The server time zone value ‘�й���׼ʱ��’ is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the ‘serverTimezone’ configuration property) to use a more specifc time zone value if you want to utilize time zone support.

看老师的视频，他们几乎都是MySQL8，我又忘记写连接时是配置了。这里主要是serverTimezone的配置。建议多加上几个信息：

jdbc:mysql://localhost:3306/ssm?useSSL=false&serverTimezone=UTC&useUnicode=true&characterEncoding=UTF-8"

注意的：

resource下新建包是用"/"隔开

这里，再贴一下我写的第一个思维导图吧：（我记不住）这个主要还是要自己多总结：

接下来，修改代码，利用Maven工程的聚合与拆分：（这里只写一下思想图）

我的其他的代码都很简单了，就不写出来了，只测试一下而已了。

最后，我的pom.xml文件：（可以安装Maven Helper）

<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>4.0.0modelVersion>

    <groupId>cn.itcastgroupId>
    <artifactId>springmvc-ssmartifactId>
    <version>1.0-SNAPSHOTversion>
    <packaging>warpackaging>

    <name>springmvc-ssm Maven Webappname>
    <properties>
        <spring.version>5.2.7.RELEASEspring.version>

    properties>

    <dependencies>
        
        <dependency>
            <groupId>org.aspectjgroupId>
            <artifactId>aspectjweaverartifactId>
            <version>1.9.5version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-aopartifactId>
            <version>5.2.7.RELEASEversion>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-contextartifactId>
            <version>5.2.7.RELEASEversion>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-testartifactId>
            <version>5.2.7.RELEASEversion>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-txartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>${spring.version}version>
        dependency>
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
            <scope>compilescope>
        dependency>
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>8.0.19version>
        dependency>
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>servlet-apiartifactId>
            <version>2.5version>
            <scope>providedscope>
        dependency>
        <dependency>
            <groupId>javax.servlet.jspgroupId>
            <artifactId>jsp-apiartifactId>
            <version>2.0version>
            <scope>providedscope>
        dependency>
        <dependency>
            <groupId>jstlgroupId>
            <artifactId>jstlartifactId>
            <version>1.2version>
        dependency> 
        <dependency>
            <groupId>log4jgroupId>
            <artifactId>log4jartifactId>
            <version>1.2.17version>
        dependency>
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-apiartifactId>
            <version>1.6.6version>
        dependency>
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-log4j12artifactId>
            <version>1.6.6version>
        dependency> 
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.5.5version>
        dependency>
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>2.0.5version>
        dependency>
        <dependency>
            <groupId>com.mchangegroupId>
            <artifactId>c3p0artifactId>
            <version>0.9.5.2version>
        dependency>

    dependencies>


    <build>
        <finalName>springmvc-ssmfinalName>
        <pluginManagement>
            <plugins>
                <plugin>
                    <artifactId>maven-clean-pluginartifactId>
                    <version>3.1.0version>
                plugin>
                
                <plugin>
                    <artifactId>maven-resources-pluginartifactId>
                    <version>3.0.2version>
                plugin>
                <plugin>
                    <artifactId>maven-compiler-pluginartifactId>
                    <version>3.8.0version>
                plugin>
                <plugin>
                    <artifactId>maven-surefire-pluginartifactId>
                    <version>2.22.1version>
                plugin>
                <plugin>
                    <artifactId>maven-war-pluginartifactId>
                    <version>3.2.2version>
                plugin>
                <plugin>
                    <artifactId>maven-install-pluginartifactId>
                    <version>2.5.2version>
                plugin>
                <plugin>
                    <artifactId>maven-deploy-pluginartifactId>
                    <version>2.8.2version>
                plugin>
            plugins>
        pluginManagement>
    build>
project>