ssm(spring5.0.2.RELEASE-mybatis3.4.5)

1、项目结构

2、具体内容

2.1、maven依赖

<?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>com.ly.ssm</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>13</maven.compiler.source>
    <maven.compiler.target>13</maven.compiler.target>
    <!--版本锁定-->
    <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>
    <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>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.6.8</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <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>
    </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>
          <!--解决IDEA maven变更后自动重置LanguageLevel和JavaCompiler版本的问题-->
          <configuration>
            <source>${maven.compiler.source}</source>
            <target>${maven.compiler.target}</target>
          </configuration>
        </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>

2.2、配置文件

2.2.1、springmvc配置文件：springmvc.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">
    <!--
    扫描注解白名单配置
    1、若只想扫描Controller注解，仅仅增加扫描白名单没用，默认还会扫描到其它注解
    2、若只想扫描白名单中的注解，需加上use-default-filters="false"配置
    -->
    <!--配置注解扫描的包，springmvc只负责Controller注解的扫描-->
    <context:component-scan base-package="com.ly.ssm" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--配置视图解析器-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    <!--开启springmvc注解驱动-->
    <mvc:annotation-driven/>
</beans>

2.2.2、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

2.2.3、jdbc.properties

jdbc.driver = com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://localhost:3306/ssm
jdbc.user = root
jdbc.password = root

2.2.4、spring配置文件：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">
    <!--jdbc资源文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!--配置注解扫描包-->
    <context:component-scan base-package="com.ly.ssm">
        <!--过滤掉Controller注解扫描，spring只负责业务层和dao层注解-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--配置数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"></property>
        <property name="jdbcUrl" value="${jdbc.url}"></property>
        <property name="user" value="${jdbc.user}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>
    <!--配置SqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <!--配置别名-->
        <property name="typeAliasesPackage" value="com.ly.ssm.domain"></property>
    </bean>
    <!--配置mappers所在的包-->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ly.ssm.dao"></property>
    </bean>
    <!--配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!--配置事务通知-->
    <tx:advice id="transactionAdvice" transaction-manager="transactionManager">
        <!--配置事务通知属性-->
        <tx:attributes>
            <tx:method name="find*" read-only="true" propagation="SUPPORTS"/>
            <tx:method name="*" propagation="REQUIRED"></tx:method>
        </tx:attributes>
    </tx:advice>
    <!--配置事务增强-->
    <aop:config>
        <aop:pointcut id="pc1" expression="execution(* com.ly.ssm.service.impl.*.*(..))"/>
        <aop:advisor advice-ref="transactionAdvice" pointcut-ref="pc1"></aop:advisor>
    </aop:config>
</beans>

2.2.5、mapper配置文件：IAccountDao.xml

<?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 namespace="com.ly.ssm.dao.IAccountDao">
    <select id="findAll" resultType="Account">
        select * from account
    </select>
    <insert id="saveAccount" parameterType="Account">
        insert into account(name,money)
        values(#{name,jdbcType=VARCHAR},#{money,jdbcType=DECIMAL})
    </insert>
</mapper>

2.2.6、web.xml

<!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>
  <!--指定加载配置文件的位置-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <!--解决post请求中文乱码-->
  <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>
  <!--配置spring监听器，默认只加载/WEB-INF/applicationContext.xml-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--配置springmvc前端控制器-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--实例化时加载springmvc.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>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

2.3、请求页面：index.jsp

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2020/2/29
  Time: 21:39
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<a href="findAll">findAll</a>
<a href="saveAccount">saveAccount</a>
</body>
</html>

2.4、控制器：AccountController

package com.ly.ssm.controller;

import com.ly.ssm.domain.Account;
import com.ly.ssm.service.IAccountService;
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.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@Controller
public class AccountController {
    @Autowired
    private IAccountService accountService;
    @RequestMapping("/findAll")
    public String findAll(Model model) {
        System.out.println("AccountController---test");
        List<Account> list = accountService.findAll();
        model.addAttribute("list",list);
        return "success";
    }
    @RequestMapping("/saveAccount")
    public String saveAccount(HttpServletResponse response) throws IOException {
        Account account = new Account();
        account.setName("测试10");
        account.setMoney(8000);
        accountService.saveAccount(account);
        //response.setCharacterEncoding("UTF-8");
        //response.setContentType("text/html;charset=UTF-8");
        //response.getWriter().print("保存成功！");
        //转发
        return "forward:findAll";
    }
}

2.5、响应页面：success.jsp

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2020/2/29
  Time: 21:39
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%--引入jstl表达式--%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h2>success</h2>
<table>
    <tr>
        <th>id</th>
        <th>name</th>
        <th>money</th>
    </tr>
    <c:forEach items="${list}" var="item">
        <tr>
            <td>${item.id}</td>
            <td>${item.name}</td>
            <td>${item.money}</td>
        </tr>
    </c:forEach>
</table>
</body>
</html>

2.6、实体类Account

package com.ly.ssm.domain;

import java.io.Serializable;

public class Account implements Serializable {
    private int id;
    private String name;
    private double money;

    public Account(){}
    public Account(String name,double money) {
        this.name = name;
        this.money = money;
    }

    public int getId() {
        return id;
    }

    public void setId(int 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 +
                '}';
    }
}

2.7、dao接口

package com.ly.ssm.dao;

import com.ly.ssm.domain.Account;

import java.util.List;

public interface IAccountDao {
    public List<Account> findAll();
    public void saveAccount(Account account);
}

2.8、service接口和实现类

package com.ly.ssm.service;

import com.ly.ssm.domain.Account;

import java.util.List;

public interface IAccountService {
    public List<Account> findAll();
    public void saveAccount(Account account);
}

package com.ly.ssm.service.impl;

import com.ly.ssm.dao.IAccountDao;
import com.ly.ssm.domain.Account;
import com.ly.ssm.service.IAccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service("accountService")
public class AccountServiceImpl implements IAccountService {
    @Autowired
    private IAccountDao accountDao;
    @Override
    public List<Account> findAll() {
        System.out.println("AccountServiceImpl---findAll");
        return accountDao.findAll();
    }

    @Override
    public void saveAccount(Account account) {
        System.out.println("AccountServiceImpl---saveAccount");
        accountDao.saveAccount(account);
        int i = 1/0;
    }
}

3、总结

3.1、事务不生效

3.1.1、原因

3.1.1.1、Spring与SpringMVC属于父子容器关系。框架启动时先启动Spring容器，而后启动SpringMVC容器。子容器可以访问父容器中的Bean，而父容器不能访问子容器中的Bean

3.1.1.2、由于SpringMVC在扫描时扩大了扫描范围，装载了@Service标识的类的实例，从而导致Controller层在注入Service时，实际注入的时子容器中的Service实例

3.1.1.3、事务被配置在父容器中，Spring父容器在装载Service时会同时应用事务配置，而SpringMVC只是单纯加载Service的实例

3.1.2、解决方法，在给springmvc.xml配置注解扫描包增加白名单时，加上use-default-filters="false"，只对配置的白名单扫描

    <!--
    扫描注解白名单配置
    1、若只想扫描Controller注解，仅仅增加扫描白名单没用，默认还会扫描到其它注解
    2、若只想扫描白名单中的注解，需加上use-default-filters="false"配置
    -->
    <!--配置注解扫描的包，springmvc只负责Controller注解的扫描-->
    <context:component-scan base-package="com.ly.ssm" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

posted @ 2020-03-01 13:19 牛牛的自留地阅读(653) 评论(0) 编辑收藏举报

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