spring5mvc第三天【大纲笔记】.pdf

SpringMVC第三天【随堂笔记】.pdf

搭建整合环境

搭建整合环境

image.png

  1. 建立数据库

    1. create database ssm;
    2. use ssm;
    3. create table account(
    4.  id int primary key auto_increment,
    5.  name varchar(100),
    6.  money double(7,2),
    7. );

  2. 创建maven项目(与之前相同)

  3. 导入坐标，引入依赖

pom.xml
archetypeCatalog
internal

<?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>cn.itcast</groupId>
  <artifactId>ssm</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>ssm 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>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <spring.version>5.0.2.RELEASE</spring.version>
    <slf4j.version>1.6.6</slf4j.version>
    <log4j.version>1.2.12</log4j.version>
    <mysql.version>5.1.6</mysql.version>
    <mybatis.version>3.4.5</mybatis.version>
  </properties>

  <dependencies>
  <!-- spring -->
  <dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.6.8</version>
  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aop</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-web</artifactId>
    <version>${spring.version}</version>
  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>${spring.version}</version>
  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>${spring.version}</version>
  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
    <version>${spring.version}</version>
  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>${spring.version}</version>
  </dependency>

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

  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>${mysql.version}</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>

  <!-- log start -->
  <dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>${log4j.version}</version>
  </dependency>

  <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>${slf4j.version}</version>
  </dependency>

  <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>${slf4j.version}</version>
  </dependency>
  <!-- log end -->
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>${mybatis.version}</version>

  </dependency>
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>1.3.0</version>
  </dependency>

  <dependency>
    <groupId>c3p0</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.1.2</version>
    <type>jar</type>
    <scope>compile</scope>
  </dependency>

  </dependencies>

  <build>
    <finalName>ssm</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>
  1. 创建文件夹（与之前一样）

springmvc (idea版 第三天) - 图2

  1. 构建Javabean，账户类

Account

package cn.itcast.domain;

import java.io.Serializable;

/**
 * 账户
 * @author yuqiong
 * @date 2019/6/21-14:57
 */
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 +
                '}';
    }
}
  1. 创建账户dao接口

AccountDao

package cn.itcast.dao;

import cn.itcast.domain.Account;

import java.util.List;

/**
 * 账户接口
 * @author yuqiong
 * @date 2019/6/21-15:00
 */
public interface AccountDao {
    //查询所有账户
    public List<Account> findAll();

    //保存账户信息
    public void saveAccount(Account account);

}
  1. 实现service接口

AccountService

package cn.itcast.service;

import cn.itcast.domain.Account;

import java.util.List;

/**
 * @author yuqiong
 * @date 2019/6/21-15:03
 */
public interface AccountService {
    //查询所有账户
    public List<Account> findAll();

    //保存账户信息
    public void saveAccount(Account account);

}
  1. 实现service接口实现类

AccountServiceImpl

package cn.itcast.service.impl;

import cn.itcast.domain.Account;
import cn.itcast.service.AccountService;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author yuqiong
 * @date 2019/6/21-15:05
 */
@Service("accountService")
public class AccountServiceImpl implements AccountService {

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

    @Override
    public void saveAccount(Account account) {
        System.out.println("业务层，保存账户。。。");

    }
}
  1. 创建账户web层

AccountController

package cn.itcast.controller;

/**
 * 账户web
 * @author yuqiong
 * @date 2019/6/21-15:07
 */
public class AccountController {

}

spring框架代码的编写

搭建和测试spring整合环境

  1. 配置spring

image.png
applicationContext.xml

<?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">

    <!--开启注解扫描，希望处理service和dao,controller不需要spring框架去处理-->
    <context:component-scan base-package="cn.itcast">
        <!--配置那些注解不扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
  </beans>

  1. 在AccountServiceImpl上加注解，@Service(“accountService”)

  2. 测试spring是否正常，并引入log4j

TestSpring

package cn.itcast.test;

import cn.itcast.service.AccountService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * 测试spring框架搭建
 * @author yuqiong
 * @date 2019/6/21-15:32
 */
public class TestSpring {
    @Test
    public void run1(){
        //加载配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        //获取对象
        AccountService as = (AccountService) ac.getBean("accountService");
        //调用对象
        as.findAll();
    }
}

log4j.properties

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=info, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

spring整合springMVC框架

搭建和测试springMVC的开发环境

  1. 在web.xml配前端控制器,编码控制器 ```xml <!DOCTYPE web-app PUBLIC
             "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
         "http://java.sun.com/dtd/web-app_2_3.dtd" >

Archetype Created Web Application dispatcherServlet org.springframework.web.servlet.DispatcherServlet contextConfigLocation classpath:springmvc.xml 1 

<servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<!--解决中文乱码问题-->
<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>



2. 创建springmvc.xml文件

![image.png](https://cdn.nlark.com/yuque/0/2019/png/221921/1562122205919-6c24bcb5-7519-4736-9f9d-7b8f45213633.png#align=left&display=inline&height=770&name=image.png&originHeight=962&originWidth=1197&size=167041&status=done&width=957.6)

3. 在beans标签中添加约束，扫描，视图解析器，过滤注解，开启资源
```xml
<?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="cn.itcast">
        <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="inernalResourceViewResolver" 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-->
    <mvc:resources mapping="/css/**" location="/css/"/>
    <mvc:resources mapping="/images/**" location="/images/"/>
    <mvc:resources mapping="/js/**" location="/js/"/>

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

</beans>
  1. AccountController中添加注解
package cn.itcast.controller;

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

/**
 * 账户web
 * @author yuqiong
 * @date 2019/6/21-15:07
 */
@Controller
@RequestMapping("account")
public class AccountController {

    @RequestMapping("findAll")
    public String findAll(){
        System.out.println("表现层：查询所有账户");
        return "list";
    }

}
  1. 在WEB-INF创建pages.list.jsp文件
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h3>查询了所有账户信息</h3>
</body>
</html>
  1. tomcat部署

image.pngimage.png

spring整合springMVC的框架

image.png

  1. 在web.xml在配置监听器

     <!--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:applicationContext.xml</param-value>
 </context-param>

  2. 测试，在AccountController中添加 ```java package cn.itcast.controller;

import cn.itcast.service.AccountService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping;

/**

  • 账户web
  • @author yuqiong

  • @date 2019/6/21-15:07 */ @Controller @RequestMapping(“account”) public class AccountController {

    @Autowired private AccountService accountService;

    @RequestMapping(“findAll”) public String findAll(){

     System.out.println("表现层：查询所有账户");
 accountService.findAll();
 return "list";

    } } ```

spring整合mybatis框架

搭建和测试mybatis的环境

  1. accountdao中编写注解
package cn.itcast.dao;

import cn.itcast.domain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;

import java.util.List;

/**
 * 账户接口
 * @author yuqiong
 * @date 2019/6/21-15:00
 */
@Repository
public interface AccountDao {
    //查询所有账户
    @Select("select * from account")
    public List<Account> findAll();

    //保存账户信息
    @Insert("insert into account (name,money) values(#{name},#{money})")
    public void saveAccount(Account account);

}
  1. 在resource中编写SqlMapConfig.xml文档

image.png

<?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>
    <!--配置环境-->
    <environments default="mysql">
        <environment id="mysql">
            <transactionManager type="JDBC"></transactionManager>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql:///ssm"/>
                <property name="username" value="root"/>
                <property name="password" value="root"/>
            </dataSource>
        </environment>
    </environments>

    <!--引入映射配置文件-->
    <mappers>
        <package name="cn.itcast.dao"/>
    </mappers>

</configuration>
  1. 编写查询测试类 ```java package cn.itcast.test;

import cn.itcast.dao.AccountDao; import cn.itcast.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.Test;

import java.io.InputStream; import java.util.List;

/**

  • @author yuqiong

  • @date 2019/7/4-14:19 */ public class TestMyBatis {

    @Test public void run1() throws Exception { //加载配置文件 InputStream in = Resources.getResourceAsStream(“SqlMapConfig.xml”); //创建sqlsessionfactory对象

     SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);

    //获取代理对象

     SqlSession session = factory.openSession();

    //查询所有数据

     AccountDao dao = session.getMapper(AccountDao.class);
 List<Account> list = dao.findAll();
 for (Account account:list){
     System.out.println(account);
 }
 //关闭资源
 session.close();
 in.close();

    }

}


![image.png](https://cdn.nlark.com/yuque/0/2019/png/221921/1562222419476-15ec4964-4504-4c4b-b8fc-0405b6308526.png#align=left&display=inline&height=62&name=image.png&originHeight=77&originWidth=355&size=9608&status=done&width=284)

4. 编写保存测试类
```java
    @Test
    public void run2() throws Exception {
        //添加数据
        Account account = new Account();
        account.setName("席八");
        account.setMoney(150d);
        //加载配置文件
        InputStream in = Resources.getResourceAsStream("SqlMapConfig.xml");
        //创建sqlsessionfactory对象
        SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
        //获取sqlsession对象
        SqlSession session = factory.openSession();
        //获取代理对象
        AccountDao dao = session.getMapper(AccountDao.class);
        //保存
        dao.saveAccount(account);
        //提交事务
        session.commit();
        //关闭资源
        session.close();
        in.close();
    }

image.png

spring整合mybatis框架

  1. 在applicationcontest.xml文件中配置

     <!--spring整合mybatis框架-->
 <!--配置连接池-->
 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
     <property name="driverClass" value="com.mysql.jdbc.Driver"/>
     <property name="jdbcUrl" value="jdbc:mysql:///ssm"/>
     <property name="user" value="root"/>
     <property name="password" value="root"/>
 </bean>
 <!--配置sqlsessionfactory工厂-->
 <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
     <property name="dataSource" ref="dataSource"/>
 </bean>
 <!--配置accountdao接口所在地-->
 <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
     <property name="basePackage" value="cn.itcast.dao"/>
 </bean>

  2. 删除sqlmapconfig.xml

  3. AccountServiceImpl添加对象 ```java package cn.itcast.service.impl;

import cn.itcast.dao.AccountDao; import cn.itcast.domain.Account; import cn.itcast.service.AccountService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;

import java.util.List;

/**

  • @author yuqiong

  • @date 2019/6/21-15:05 */ @Service(“accountService”) public class AccountServiceImpl implements AccountService {

    @Autowired private AccountDao accountDao;

    @Override public List findAll() {

     System.out.println("业务层，查询所有账户。。。");
 return accountDao.findAll();

    }

    @Override public void saveAccount(Account account) {

     System.out.println("业务层，保存账户。。。");
 accountDao.saveAccount(account);

    } } ```

  1. 改写AccountController，使数据显示到页面 ```java package cn.itcast.controller;

import cn.itcast.domain.Account; import cn.itcast.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 java.util.List;

/**

  • 账户web
  • @author yuqiong

  • @date 2019/6/21-15:07 */ @Controller @RequestMapping(“/account”) public class AccountController {

    @Autowired private AccountService accountService;

    @RequestMapping(“/findAll”) public String findAll(Model model){

     System.out.println("表现层：查询所有账户");
 List<Account> list = accountService.findAll();
 model.addAttribute("list",list);
 return "list";

    }

}


5. 改写list页面
```html
<%@ 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>
<h3>查询了所有账户信息</h3>
<c:forEach items="${list}" var="account">
    ${account.name}
</c:forEach>
</body>
</html>

image.png

spring整合mybatis框架配置事务

保存事务还需要手动处理，使用声明式自动管理事务

1.在applicationcontext.xml中配置spring框架声明式事务管理

    <!--配置spring框架声明式事务管理-->
    <!--配置事务管理器-->
    <bean id="transactionalCacheManager" class="org.apache.ibatis.cache.TransactionalCacheManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>

    <!--配置AOP增强-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.itcast.service.impl.AccountServiceImpl.*(..))"/>
    </aop:config>
  1. AccountController中添加save方法
    /**
     * 保存
     * @param account
     * @return
     */
    @RequestMapping("/save")
    public void save(Account account , HttpServletRequest request , HttpServletResponse response) throws IOException {
        accountService.saveAccount(account);
        response.sendRedirect(request.getContextPath()+"/account/findAll");
        return;
    }
  1. 修改index.jsp
<%@ 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>

image.pngimage.png