使用IDEA搭建ssm框架-有解無憂

ssm(spring springMVC mybatis)

1.創建專案

file->new->project

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2.新建的maven專案目錄結構

在這里插入圖片描述添加ssm需要的檔案夾等

如果去掉java檔案夾的藍色標志，會發現這里new時不能創建java類或包
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如果main/java前不是藍色檔案夾或test/java前不是綠色檔案夾，可以這樣添加
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3.加入maven依賴

pom.xml

<?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>org.example</groupId>
  <artifactId>ssm3</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>ssm3 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>
    <jackson.version>2.5.4</jackson.version>
  </properties>

  <dependencies>

    <!-- controller回傳json -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>${jackson.version}</version>
    </dependency>

    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>${jackson.version}</version>
    </dependency>

    <!-- 引入spring mvc的jar包 -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>

    <!--  JDBC支持包，包括資料源設定和JDBC訪問支持 -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>


    <!-- Spring提供對AspectJ框架的整合  -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>


    <!-- mybatis依賴包 -->
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.2</version>
    </dependency>


    <!-- mybatis引入spring適配包 -->
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>


    <!-- 資料庫連接池 c3p0 -->
    <!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>


    <!-- mysql驅動  -->
    <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.13</version>
    </dependency>

    <!-- jstl標簽相關的包 -->
    <!-- https://mvnrepository.com/artifact/jstl/jstl -->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>


    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
      <scope>provided</scope>
    </dependency>


    <!-- 逆向工程jar包 -->
    <!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
    <dependency>
      <groupId>org.mybatis.generator</groupId>
      <artifactId>mybatis-generator-core</artifactId>
      <version>1.3.5</version>
    </dependency>


    <!--分頁依賴的jar包-->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>5.0.0</version>
    </dependency>

  </dependencies>

  <build>
    <finalName>ssm3</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>

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4.加入spring組態檔（applicationContext.xml）

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<?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">


    <!-- spring 組態檔  主要配置和業務邏輯有關的 -->

    <!-- 配置資料庫連接的相關資訊 dbconfig.properties也定義在resources檔案夾下-->
    <context:property-placeholder location="classpath:dbconfig.properties"/>
    <!-- 資料源 -->
    <bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
        <property name="driverClass" value="${jdbc.driverClass}"></property>
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>


    <!--掃描com.ssm所有的除了@Controller以外的其它注解，也就是service和dao層的注解
     service層注解 @Service   dao層注解@Repository
    -->
    <context:component-scan base-package="com.ssm">
        <!-- 不能掃描控制器 -->
    <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan>


    <!-- 把mybatis和spring整合在一起，mybatis-config.xml也和applictionContext.xml同檔案夾
         mapper/星號.xml  指定要掃描的映射檔案（sql陳述句的xml檔案）的路徑，和applictionContext.xml同檔案夾 -->
    <!-- 配置和mybatis的整合 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 指定mybatis 全域組態檔的位置 -->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <property name="dataSource" ref="pooledDataSource"></property>
        <!-- 指定mybatismapper檔案的位置 -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
    </bean>



    <!-- 配置掃描器，將mybatis介面的實作加入到ioc容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 掃描所有的dao介面 -->
        <property name="basePackage" value="com.ssm.dao"></property>
    </bean>

    <!-- 事務控制的配置,為所有的非get開頭的service層方法織入事務 -->

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 控制資料源 -->
        <property name="dataSource" ref="pooledDataSource"></property>
    </bean>

    <aop:config>
        <!-- 切入點運算式 -->
        <aop:pointcut expression="execution(* com.liuzhan.service..*(..) )" id="txPoint"/>
        <!-- 配置事務 -->
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
    </aop:config>
    <!-- 配置事務增強  事務如何切入 -->
    <tx:advice id="txAdvice">

        <tx:attributes>
            <!-- 所有方法都是事務方法 -->
            <tx:method name="*"/>
            <!-- 以get開頭的所有方法 -->
            <tx:method name="get*" read-only="true"/>
        </tx:attributes>
    </tx:advice>
</beans>

5.配置資料庫連接相關資訊（dbconfig.properties）

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#資料庫連接
jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm-crud?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT%2B8
#加載驅動
jdbc.driverClass=com.mysql.cj.jdbc.Driver
#資料庫登錄用戶名
jdbc.user=root
#密碼
jdbc.password=root

6.mybatis組態檔（mybatis-config.xml）

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<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>


</configuration>

注意：這里要建個mapper空檔案，因為spring的組態檔applicationContext.xml
中有一項配置要掃描這個檔案夾下的所有映射檔案
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7.配置web.xml檔案

web.xml
專案啟動，先加載web.xml檔案的配置
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<!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>
  <display-name>Archetype Created Web Application</display-name>

  <!-- 1.啟動spring容器,加載spring組態檔applicationContext.xml -->
  <!-- needed for ContextLoaderListener -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.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>


  <!-- 2.  配置spring mvc 的前端控制器，DispatcherServlet類攔截所有請求，交給controller處理
  加載spring mvc組態檔（dispatcherServlet-servlrt.xml,還沒有建） -->
  <!-- The front controller of this Spring Web application, responsible for handling all application requests -->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--  不寫，寫的話需要建個springmvc.xml就不需要dispatcherServlet-servlrt.xml -->
    <!--    <init-param>-->
    <!--      <param-name>contextConfigLocation</param-name>-->
    <!--      <param-value>classpath:springmvc.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>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>



  <!-- 編碼過濾器，防止出現亂碼 -->
  <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>
  </filter>

  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

8.配置spring mvc組態檔（dispatcherServlet-servlet.xml）

spring mvc就是充當控制器，替代servlet

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



    <!-- spring mvc主要作用就是充當控制器，只需要掃描controller -->
    <context:component-scan base-package="com.ssm" use-default-filters="false">
        <!-- 因為是spring mvc 只需要掃描控制器 -->
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- 配置視圖決議器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <!-- 兩個標準配置 -->
    <!-- 將springmvc 不能處理的請求交給tomcat  例如靜態資源 -->
    <mvc:default-servlet-handler/>

    <mvc:annotation-driven>
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>
        </mvc:message-converters>
    </mvc:annotation-driven>
</beans>

9.使用逆向工程前配置

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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="DB2Tables" targetRuntime="MyBatis3">
        <!-- 配置資料連接資訊 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://localhost:3306/ssm-crud?useUnicode=true&amp;characterEncoding=utf-8&amp;serverTimezone=GMT%2B8"
                        userId="root"
                        password="root">
        </jdbcConnection>

        <javaTypeResolver >
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- 指定java bean生成的位置 -->
        <javaModelGenerator targetPackage="com.ssm.entity" targetProject=".\src\main\java">
            <property name="enableSubPackages" value="true" />
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!-- 指定sql映射檔案生成的位置 -->
        <sqlMapGenerator targetPackage="mapper"
                         targetProject=".\src\main\resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>
        <!-- 指定dao介面生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetPackage="com.ssm.dao"
                             targetProject=".\src\main\java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>
        <!-- 指定每個表的生成策略,表和類對應關系 -->
        <table tableName="tbl_emp" domainObjectName="Employee"></table>
        <table tableName="tbl_dept" domainObjectName="Department"></table>
    </context>
</generatorConfiguration>

10.使用逆向工程生成介面、物體類、映射檔案

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MBGTest.java

import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.exception.InvalidConfigurationException;
import org.mybatis.generator.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;

import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

public class MBGTest {
    public static void main(String[] args) throws IOException, XMLParserException, InvalidConfigurationException, SQLException, InterruptedException {
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        File configFile = new File("mbg.xml");
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        myBatisGenerator.generate(null);
    }
}

逆向工程生成
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