idea+maven+SSM

现在idea,越来越流行了,感觉再用eclipse开发都不好意思跟别人说,我的一个小朋友最近也在转idea,想自己搭个maven+ssm 的框架用(不要问我为什么要这么搭),结果问题百出,身边也有不少新人在初次使用这套系统遇到很多问题,由于eclipse和idea很多细节不一样,很多网上类似的文章也是很多年前不愿意考证的,特此写一篇送给新入门的朋友。

1.系统环境

Win10            x64
jdk      1.8     x86
Tomcat   8.0.36  x86
MySQL    14.14   x86
Maven    3.3.9
Idea     2016.1.1
为什么这些都罗列出来?因为有不少朋友搭不起来是因为自己的软件版本而造成的,所以我希望大家先确定一下自己的软件环境。

2.工程搭建

idea 工程目录和eclipse 很不同,在新建项目时尤为需要注意,否则会出现很多奇奇怪怪的事情,并且将来还需要再进行修改很麻烦。

2.1 新建工程

1.file-new-project 如下图选择,这种方式目前是我觉得最方便的方式,只需要再建几个文件夹即可。
idea+maven+SSM_第1张图片
这么建立好工程之后,会自动下载一些依赖包,等它下载完毕即可。
2.建立如下图目录,即新建一个java 文件夹,通过右键文件夹–>mark directory as–>,Source Root
idea+maven+SSM_第2张图片
大概说一下文件夹的作用:
java文件夹: 代码都写在这里,在里面建立com.balabala.bilibili 类似的路径。
这里尤为需要注意的是默认情况下,java 这个文件夹在工程打包运行时是不会打包其中.xml的文件的,这是idea和eclipse不同处之一,最早使用时就吃了这个亏,mybatis的xml配置文件需要写在resources或者在pom.xml文件中配置过才会被正常打包。
resources文件夹 :即classpath路径,这里一般都是放配置文件,如springmvc.xml jdbc.properties log4j.properties等。
webapp文件夹:存放web页面。

2.2 pom.xml 文件

写的很详细,自己逐行看或者直接复制就好。

<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>4.0.0modelVersion>
  <groupId>bomber.easycodinggroupId>
  <artifactId>EasyWebsiteManagementartifactId>
  <packaging>warpackaging>
  <version>1.0-SNAPSHOTversion>
  <name>EasyWebsiteManagement Maven Webappname>
  <url>http://maven.apache.orgurl>
  <properties>
    
    <spring.version>4.3.2.RELEASEspring.version>
    
    <mybatis.version>3.2.6mybatis.version>
    
    <slf4j.version>1.7.7slf4j.version>
    <log4j.version>1.2.17log4j.version>
  properties>

  <dependencies>
    <dependency>
      <groupId>junitgroupId>
      <artifactId>junitartifactId>
      <version>3.8.1version>
      
    dependency>

    <dependency>
      <groupId>javaxgroupId>
      <artifactId>javaee-apiartifactId>
      <version>7.0version>
    dependency>



    <dependency>
      <groupId>junitgroupId>
      <artifactId>junitartifactId>
      <version>4.11version>
      
      <scope>testscope>
    dependency>
    
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-coreartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webartifactId>
      <version>${spring.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-oxmartifactId>
      <version>${spring.version}version>
    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>org.springframeworkgroupId>
      <artifactId>spring-webmvcartifactId>
      <version>${spring.version}version>
    dependency>
    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-aopartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-context-supportartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-testartifactId>
      <version>${spring.version}version>
    dependency>
    
    <dependency>
      <groupId>org.mybatisgroupId>
      <artifactId>mybatisartifactId>
      <version>${mybatis.version}version>
    dependency>
    
    <dependency>
      <groupId>org.mybatisgroupId>
      <artifactId>mybatis-springartifactId>
      <version>1.2.2version>
    dependency>
    
    <dependency>
      <groupId>javaxgroupId>
      <artifactId>javaee-apiartifactId>
      <version>7.0version>
    dependency>
    
    <dependency>
      <groupId>mysqlgroupId>
      <artifactId>mysql-connector-javaartifactId>
      <version>5.1.30version>
    dependency>
    
    <dependency>
      <groupId>commons-dbcpgroupId>
      <artifactId>commons-dbcpartifactId>
      <version>1.2.2version>
    dependency>
    
    <dependency>
      <groupId>jstlgroupId>
      <artifactId>jstlartifactId>
      <version>1.2version>
    dependency>
    
    
    <dependency>
      <groupId>log4jgroupId>
      <artifactId>log4jartifactId>
      <version>${log4j.version}version>
    dependency>


    
    <dependency>
      <groupId>com.alibabagroupId>
      <artifactId>fastjsonartifactId>
      <version>1.1.41version>
    dependency>


    <dependency>
      <groupId>org.slf4jgroupId>
      <artifactId>slf4j-apiartifactId>
      <version>${slf4j.version}version>
    dependency>

    <dependency>
      <groupId>org.slf4jgroupId>
      <artifactId>slf4j-log4j12artifactId>
      <version>${slf4j.version}version>
    dependency>
    
    
    <dependency>
      <groupId>org.codehaus.jacksongroupId>
      <artifactId>jackson-mapper-aslartifactId>
      <version>1.9.13version>
    dependency>
    
    <dependency>
      <groupId>commons-fileuploadgroupId>
      <artifactId>commons-fileuploadartifactId>
      <version>1.3.1version>
    dependency>
    <dependency>
      <groupId>commons-iogroupId>
      <artifactId>commons-ioartifactId>
      <version>2.4version>
    dependency>
    <dependency>
      <groupId>commons-codecgroupId>
      <artifactId>commons-codecartifactId>
      <version>1.9version>
    dependency>
    <dependency>
      <groupId>org.testnggroupId>
      <artifactId>testngartifactId>
      <version>6.9.10version>
    dependency>
    <dependency>
      <groupId>junitgroupId>
      <artifactId>junitartifactId>
      <version>4.12version>
    dependency>

  dependencies>

  <build>
    <finalName>EasyWebsiteManagementfinalName>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.pluginsgroupId>
        <artifactId>maven-compiler-pluginartifactId>
        <configuration>
          <source>1.6source>
          <target>1.6target>
        configuration>
      plugin>
    plugins>
    
    <resources>
      <resource>
        <directory>src/main/javadirectory>
        <includes>
          <include>**/*.propertiesinclude>
          <include>**/*.xmlinclude>
        includes>
        
        <filtering>falsefiltering>
      resource>

    resources>

  build>


project>

2.3 建立项目目录

如下图 这是此次工程的完整目录,其中mapper 和pojo是通过逆向工程从数据库中生成的,如果需要了解逆向工程的使用,可看我另外一篇博文。
idea+maven+SSM_第3张图片

2.4 各类配置文件

数据库:

CREATE TABLE `user` (
  `userId` varchar(255) NOT NULL,
  `username` varchar(255) DEFAULT NULL COMMENT '用户名',
  `password` varchar(255) DEFAULT NULL COMMENT '密码',
  `usergroup` varchar(255) DEFAULT NULL COMMENT '用户组',
  `userAuthority` varchar(255) DEFAULT NULL COMMENT '用户权限',
  `backup1` varchar(255) DEFAULT NULL,
  `backup2` varchar(255) DEFAULT NULL,
  `backup3` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`userId`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

web.xml


<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_3_1.xsd"
         version="3.1">

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

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

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

    
    <servlet>
        <servlet-name>SpringMVCservlet-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>
        <async-supported>trueasync-supported>
    servlet>

    
    <servlet-mapping>
        <servlet-name>SpringMVCservlet-name>
        <url-pattern>*.actionurl-pattern>
    servlet-mapping>

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

web-app>

jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/xtxy?useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=root

jdbc.initialSize=0

jdbc.maxActive=20

jdbc.maxIdle=20

jdbc.minIdle=1

jdbc.maxWait=60000

log4j.properties

#定义LOG输出级别
log4j.rootLogger=INFO,Console,File
#定义日志输出目的地为控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
#可以灵活地指定日志输出格式,下面一行是指定具体的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

#文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.File = org.apache.log4j.RollingFileAppender
#指定输出目录
log4j.appender.File.File = logs/ssm.log
#定义文件最大大小
log4j.appender.File.MaxFileSize = 10MB
# 输出所以日志,如果换成DEBUG表示输出DEBUG以上级别日志
log4j.appender.File.Threshold = ALL
log4j.appender.File.layout = org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

SpringMVC.xml


<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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">


    
    <context:component-scan base-package="bomber.easycoding.easywebsitemanagement.controller" />

    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    bean>


beans>

Spring-mybatis.xml


<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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    
    <context:component-scan base-package="bomber.easycoding.easywebsitemanagement" />

    
    <bean id="propertyConfigurer"
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:jdbc.properties" />
    bean>

    
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
          destroy-method="close">
        <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="${jdbc.initialSize}">property>
        
        <property name="maxActive" value="${jdbc.maxActive}">property>
        
        <property name="maxIdle" value="${jdbc.maxIdle}">property>
        
        <property name="minIdle" value="${jdbc.minIdle}">property>
        
        <property name="maxWait" value="${jdbc.maxWait}">property>
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        
        <property name="mapperLocations" value="classpath:bomber/easycoding/easywebsitemanagement/mapper/*.xml">property>
    bean>
    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="bomber.easycoding.easywebsitemanagement.mapper" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">property>
    bean>

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

beans>

2.5 测试代码

其他部分没什么好说的,正常autowired注入并调用即可,如果按照上面配置文件配置的话,肯定没有问题。主要注意的是在注入mybatis的 mapper时,默认idea 会报错,如图
idea+maven+SSM_第4张图片
Could not autowire.No beans of ‘UserMapper’ type found
这里的报错不影响使用,是idea 错误提示设置的问题,可以忽视,处女座可自行百度去掉提示即可。

3.写在最后

其实eclipse 与idea 只是软件不同,孰优孰劣见仁见智,有精力的情况下折腾折腾挺好,没有精力的话 eclipse 完全没有问题,新入门的朋友切莫纠结于开发软件,知识的获取比工具的使用在入门的阶段要重要的多。

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