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在IntelliJ IDEA上使用Maven创建SSM项目

在IntelliJ IDEA上使用Maven创建SSM项目

作者: 轻飘飘D | 来源:发表于2020-01-13 17:06 被阅读0次

    1.使用IntelliJ IDEA创建Mawen WEB项目
    File -> New -> Project -> New Project 选择 Maven 选中 create from archetype 然后 选择 org-apache.maven.archetypes:maven-archetype-webapp


    image.png image.png

    配置 maven 環境 & 新建 archetypeCatalog:internal 屬性


    image.png image.png image.png
    1. 引入依賴包
    <dependencies>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.16</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.2</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.28</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
    </dependency>

    <dependency>
      <groupId>cglib</groupId>
      <artifactId>cglib</artifactId>
      <version>3.1</version>
    </dependency>

    <!--数据库连接池-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.20</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>2.0.2</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>
    <!--spring集成Junit测试-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>
    <!--spring容器-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>
    <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>5.2.0.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.0.RELEASE</version>
    </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>5.2.0.RELEASE</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>5.2.0.RELEASE</version>
      </dependency>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

  </dependencies>
    1. 准备数据(DB)
    root@127.0.0.1 : testdb【10:55:55】13 SQL->create database ssmdemo;

root@127.0.0.1 : testdb【12:18:14】14 SQL->use ssmdemo;

root@127.0.0.1 : ssmdemo【12:18:26】15 SQL->
create table account 
 (
   id int primary key auto_increment,
   name varchar(50),
   money double
 );

root@127.0.0.1 : ssmdemo【12:18:38】16 SQL->select * from account;
+----+------+-------+
| id | name | money |
+----+------+-------+
|  1 | xag  |   123 |
+----+------+-------+
    1. resources文件夹
      在main文件夹下创建一个resources文件夹：右键main，new->Directory 右键新建的resources文件夹 -> Make Directory As -> Resources Root 作为资源文件夹, resources下新建META-INF目錄(Directory)，META-INF里创建applicationContext.xml配置文件：new - >XML Configuration File -> Spring Config 注：右上角有个提示需要点击, 【新建sources root】右键main，new->Directory 右键新建的java文件夹 -> Make Directory As ->sources root
    2. 測試
      5.1 Spring 測試
      applicationContext.xml 文件中配置bean
    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       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">

    <bean id="helloWorld" class="com.xag.controller.HelloWord">
        <property name="name" value="xag"></property>
    </bean>
</beans>

    創建測試代碼（com.xag 下新建 controller package,controller 下新建 HelloWord.java)

    package com.xag.controller;

public class HelloWord
{
    public String name;

    public void setName(String name) {
        this.name = name;
    }

    public void hello()
    {
        System.out.print("hello:" + name);
    }
}

    新建 Spring的測試類 TestHello (com.xag.test目錄下）--可以允許此類測試

    package com.xag.test;

import com.xag.controller.HelloWord;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.junit.Test;

public class TestHello
{
    @Test
    public void run1()
    {
        //1.创建spring的ioc容器对象
        ApplicationContext ctx = new ClassPathXmlApplicationContext("META-INF/applicationContext.xml");
        //2.从ioc容器中获取bean实例
        HelloWord helloWorld = (HelloWord) ctx.getBean("helloWorld");
        helloWorld.hello();
    }
}

    5.2 Mybaits 测试
    新建mybatis-config.xml 文件（resources目录下）

    <?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">
<!-- 根标签 -->
<configuration>
    <!-- 环境，可以配置多个，default：指定采用哪个环境 -->
    <environments default="test">
        <!-- id：唯一标识 -->
        <environment id="test">
            <!-- 事务管理器，JDBC类型的事务管理器 -->
            <transactionManager type="JDBC" />
            <!-- 数据源，池类型的数据源 -->
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver" />
                <property name="url" value="jdbc:mysql://192.168.40.8:3306/ssmdemo" />
                <property name="username" value="root" />
                <property name="password" value="123456" />
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper resource="mappers/MyMapper.xml" />
        <!--<mapper resource="mappers/AccMapper.xml"/> -->
    </mappers>
</configuration>

    新建 MyMapper.xml 文件（resources/mappers目录下）

    <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- mapper:根标签，namespace：命名空间，随便写，一般保证命名空间唯一 -->
<mapper namespace="MyMapper">
    <!-- statement，内容：sql语句。id：唯一标识，随便写，在同一个命名空间下保持唯一
       resultType：sql语句查询结果集的封装类型,tb_user即为数据库中的表
     -->
    <select id="selectAcc" resultType="com.xag.domain.Account">
      select id,name,money from account where id = #{id}
   </select>
</mapper>

    新建 log4j.properties 文件（resources目录下）

    log4j.rootLogger=DEBUG,A1
log4j.logger.org.apache=DEBUG
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss,SSS} [%t] [%c]-[%p] %m%n

    新建Account 類（main/java 下創建com.xag.domain 和 com.xag.test）

    package com.xag.domain;

import java.io.Serializable;

public class Account implements Serializable {
    private Integer id;
    private String name;
    private Double money;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Double getMoney() {
        return money;
    }

    public void setMoney(Double money) {
        this.money = money;
    }

    @Override
    public String toString()
    {
        return "Account{" +  "id=" + id +  ", name='" + name + '\'' +  ", money=" + money + '}';
    }
}

    新建TestMybatis.java( com.xag.test下）,運行此類可以做測試

    package com.xag.test;

import com.xag.domain.Account;
import org.junit.Test;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import java.io.InputStream;

public class TestMybatis
{
    @Test
    public void run2()
    {
        // 获取sqlSession
        SqlSession sqlSession ;
        try {
            // 指定全局配置文件
            String resource = "mybatis-config.xml";
            // 读取配置文件
            InputStream inputStream = Resources.getResourceAsStream(resource);
            // 构建sqlSessionFactory
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
            // 获取sqlSession
            sqlSession = sqlSessionFactory.openSession();
            // 操作CRUD，第一个参数：指定statement，规则：命名空间+“.”+statementId
            // 第二个参数：指定传入sql的参数：这里是用户id
            Account user = sqlSession.selectOne("MyMapper.selectAcc", 1);
            System.out.println(user);
            sqlSession.close();
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        finally
        {

        }
    }
}

    5.3 Mybaits 测试2--使用动态代理改造CRUD
    新建 AccMapper接口（com.xag.dao目錄下）

    package com.xag.dao;

import com.xag.domain.Account;
import java.util.List;

public interface AccMapper
{
    public Account queryAccById(Long id);

    public List<Account> findAll();

    public void insertAcc(Account acc);
}

    新建AccMapper.xml文件（resource/mappers目錄下）

    <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- mapper:根标签，namespace：命名空间，随便写，一般保证命名空间唯一 ，为了使用接口动态代理，这里必须是接口的全路径名-->
<mapper namespace="com.xag.dao.AccMapper">
    <select id="queryAccById" resultType="com.xag.domain.Account">
        select id,name,money from account where id = #{id}
    </select>

    <select id="findAll" resultType="com.xag.domain.Account">
        select id,name,money from account
    </select>

    <insert id="insertAcc" useGeneratedKeys="true" keyColumn="id" keyProperty="id"
            parameterType="com.xag.domain.Account">
        INSERT INTO account(id,name,money) VALUES (null,#{name},#{money});
    </insert>
</mapper>

    全局配置文件mybatis-config.xml引入AccMapper.xml

    <mappers>
        <mapper resource="mappers/MyMapper.xml" />
        <mapper resource="mappers/AccMapper.xml"/>
    </mappers>

    创建TestAccMapper测试用例(com.xag.test下）

    package com.xag.test;


import com.xag.dao.AccMapper;
import com.xag.domain.Account;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Before;
import org.junit.Test;
import java.io.InputStream;

public class TestAccMapper
{
    public AccMapper accMapper;

    @Before
    public void setUp() throws Exception {
        // 指定配置文件
        String resource = "mybatis-config.xml";
        // 读取配置文件
        InputStream inputStream = Resources.getResourceAsStream(resource);
        // 构建sqlSessionFactory
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        // 获取sqlSession
        SqlSession sqlSession = sqlSessionFactory.openSession(true);

        // 1. 映射文件的命名空间（namespace）必须是mapper接口的全路径
        // 2. 映射文件的statement的id必须和mapper接口的方法名保持一致
        // 3. Statement的resultType必须和mapper接口方法的返回类型一致
        // 4. statement的parameterType必须和mapper接口方法的参数类型一致（不一定）
        this.accMapper = sqlSession.getMapper(AccMapper.class);
    }

    @Test
    public void testQueryAccById()
    {
        long i=1;
        System.out.println(this.accMapper.queryAccById(i));
    }

    @Test
    public void testInsertAcc() {
        Account user = new Account();
        user.setName("大神");
        user.setMoney(500d);
        this.accMapper.insertAcc(user);
        System.out.println(user.getId());
    }
}
    1. Spring 集成Mybatis
      6.1. 新建 mybatis-config_spring.xml （resources目錄下） （Spring 集成Mybatis 的配置文件）
    <?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">
<!-- 根标签 -->
<configuration>
    <!-- 环境，可以配置多个，default：指定采用哪个环境 -->
    <environments default="test">
        <!-- id：唯一标识 -->
        <environment id="test">
            <!-- 事务管理器，JDBC类型的事务管理器 -->
            <transactionManager type="JDBC" />
            <!-- 数据源，池类型的数据源 -->
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver" />
                <property name="url" value="jdbc:mysql://192.168.40.8:3306/ssmdemo" />
                <property name="username" value="root" />
                <property name="password" value="123456" />
            </dataSource>
        </environment>
    </environments>
</configuration>

    6.2 新建spring配置文件,new - >XML Configuration File -> Spring Config --> applicationContext-dao.xml（resources/spring 下）注：右上角有个提示需要点击

    <?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:properties/*.properties"/>
    <!-- 数据库连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
          destroy-method="close">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url"
                  value="jdbc:mysql://${jdbc.host}:3306/${jdbc.database}?useUnicode=true&amp;characterEncoding=utf-8&amp;zeroDateTimeBehavior=convertToNull"/>
        <property name="username" value="${jdbc.userName}"/>
        <property name="password" value="${jdbc.passWord}"/>
        <!-- 初始化连接大小 -->
        <property name="initialSize" value="${jdbc.initialSize}"></property>
        <!-- 连接池最大数据库连接数  0 为没有限制 -->
        <property name="maxActive" value="${jdbc.maxActive}"></property>
        <!-- 连接池最大的空闲连接数，这里取值为20，表示即使没有数据库连接时依然可以保持20空闲的连接，而不被清除，随时处于待命状态 0 为没有限制 -->
        <property name="maxIdle" value="${jdbc.maxIdle}"></property>
        <!-- 连接池最小空闲 -->
        <property name="minIdle" value="${jdbc.minIdle}"></property>
        <!--最大建立连接等待时间。如果超过此时间将接到异常。设为-1表示无限制-->
        <property name="maxWait" value="${jdbc.maxWait}"></property>
    </bean>

    <!-- spring和MyBatis完美整合 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 自动扫描mapping.xml文件 -->
        <property name="mapperLocations" value="classpath:mappers/*.xml"></property>
        <!--如果mybatis-config.xml没有特殊配置也可以不需要下面的配置-->
        <property name="configLocation" value="classpath:mybatis-config_spring.xml" />
    </bean>

    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.xag.dao"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>

    <!-- (事务管理)transaction manager -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <bean id="accountService" class="com.xag.service.Impl.AccountServiceImpl"></bean>
</beans>

    6.2 新建 db.properties 文件（resources/properties下）将先前的log4j.properties 也移到此目录

    jdbc.driver=com.mysql.jdbc.Driver
jdbc.host=192.168.40.8
jdbc.database=ssmdemo
jdbc.userName=root
jdbc.passWord=123456
jdbc.initialSize=0
jdbc.maxActive=20
jdbc.maxIdle=20
jdbc.minIdle=1
jdbc.maxWait=3000

    6.3 新建 AccountService 接口(com.xag.service目錄下)

    package com.xag.service;

import com.xag.domain.Account;

import java.util.List;

public interface AccountService {
    // 查询所有账户
    public List<Account> findAll();

    // 保存帐户信息
    public void insertAcc(Account acc);
}

    6.4 新建 AccountServiceImpl 實現類（com.xag.service.Impl目錄下）

    package com.xag.service.Impl;

import com.xag.dao.AccMapper;
import com.xag.domain.Account;
import com.xag.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service("accountService")
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccMapper accMapper;

    @Override
    public List<Account> findAll() {
        System.out.println("Service业务层：查询所有账户...");
        return accMapper.findAll();
    }

    @Override
    public void insertAcc(Account acc) {
        System.out.println("Service业务层：保存帐户...");
        accMapper.insertAcc(acc);
    }
}

    6.5 新建TestSpring 測試程序(com.xag.test下）

    package com.xag.test;

import com.xag.service.AccountService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestSpring
{
    @Test
    public void run3()
    {
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:spring/applicationContext-dao.xml");
        AccountService as = (AccountService) ac.getBean("accountService");
        as.findAll();
    }
}

    6.6 新建 TestAccMapperSpring 測試程序(com.xag.test下）

    package com.xag.test;

import com.xag.dao.AccMapper;
import com.xag.domain.Account;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.util.List;

//目标：测试一下spring的bean的某些功能
@RunWith(SpringJUnit4ClassRunner.class)//junit整合spring的测试//立马开启了spring的注解
@ContextConfiguration(locations="classpath:spring/applicationContext-*.xml")//加载核心配置文件，自动构建spring容器
public class TestAccMapperSpring
{
    @Autowired
    public AccMapper accMapper;

    @Test
    public void testQueryAccById()
    {
        long i=1;
        System.out.println(this.accMapper.queryAccById(i));
    }

    @Test
    public void testFindAll() {
        List<Account> accList = this.accMapper.findAll();
        for (Account user : accList) {
            System.out.println(user);
        }
    }

    @Test
    public void testInsertAcc()
    {
        Account acc = new Account();
        acc.setName("大神S");
        acc.setMoney(500d);
        this.accMapper.insertAcc(acc);
        System.out.println(acc.getId());
    }

}
    1. SpringMVC框架代码的编写
      7.1 在web.xml (webapp/WEB-INFO)中配置DispatcherServlet前端控制器
    <!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 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_3_0.xsd"
         version="3.0">
  <display-name>Archetype Created Web Application</display-name>

  <!--配置Spring的监听器，默认只加载WEB-INF目录下的applicationContext.xml配置文件-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--设置配置文件的路径-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring/applicationContext-dao.xml</param-value>
  </context-param>


  <!--配置前端控制器-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--加载springmvc.xml配置文件-->
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!--启动服务器，创建该servlet-->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!--解决中文乱码的过滤器-->
  <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>
  </filter>
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

    7.2 在resources资源文件夹中创建springmvc.xml配置文件

    <?xml version="1.0" encoding="UTF-8"?>
<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">
    <!--开启注解扫描，只扫描Controller注解-->
    <context:component-scan base-package="com.xag">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--配置的视图解析器对象-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!--过滤静态资源，如果爆红是因为resources资源下还没有这些静态资源，我先注释了-->
    <!-- <mvc:resources location="/css" mapping="/css/**"/>
     <mvc:resources location="/images/" mapping="/images/**"/>
     <mvc:resources location="/js/" mapping="/js/**"/>-->

    <!--开启SpringMVC注解的支持-->
    <mvc:annotation-driven/>
</beans>

    7.3 webapp下创建 index.jsp页面

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<a href="account/findAll">测试查询</a>
<h3>测试包</h3>
<form action="account/save" method="post">
    姓名：<input type="text" name="name" /><br/>
    金额：<input type="text" name="money" /><br/>
    <input type="submit" value="保存"/><br/>
</form>
</body>
</html>

    8.5 在controller层中的AccountController的class类

    package com.xag.controller;

import com.xag.domain.Account;
import com.xag.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@Controller
public class AccountController {

    @Autowired
    private AccountService accountService;

    @RequestMapping("/account/findAll")
    public String findAll(Model model){  //存数据， Model对象
        System.out.println("Controller表现层：查询所有账户...");
        // 调用service的方法
        List<Account> list = accountService.findAll();
        model.addAttribute("list",list);
        return "list";
    }

    @RequestMapping("/account/save")
    public void save(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
        accountService.insertAcc(account);
        response.sendRedirect(request.getContextPath()+"/account/findAll");
        return;
    }
}

    8.6 创建controller跳转的list.jsp页面了(webapp\WEB-INF\pages) 下

    <%--
  Created by IntelliJ IDEA.
  User: Bule
  Date: 2019/9/2
  Time: 7:32
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<html>
<head>
    <title>Title</title>
</head>
<body>
<h2>查询所有的账户</h2>
<c:forEach items="${list}" var="account">
    ${account.name}
</c:forEach>
</body>
</html>

    8.7 部署Tomcat进行测试


    image.png image.png image.png image.png image.png image.png

    運行 index.jsp 測試tomcat 如 index.jsp 的URL 非下圖，則配置為下圖：


    image.png

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