2019IDEA整合(Spring+SpringMVC+Mybatis+Maven)及常见异常处理

于 2019-08-12 22:11:44 发布
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分类专栏： java 文章标签： ssm整合 非常详细的SSM整合 Spring+SpringMVC+Mybatis 2019IDEA、SSM整合
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本文链接：https://blog.youkuaiyun.com/qq_36957885/article/details/99345737
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git地址：https://github.com/UserFengFeng/Maven-Spring-SpringMVC-Mybatis-.git

追加遗漏：创建person表，字段：id,name,gender,address,birthday

                  person实体类跟mapping映射文件没有贴出来是因为逆向工程就自动生成了，并且贴了git地址，可自行download

1.创建项目

 

 

第一次创建下载依赖比较慢，耐心等待下载完毕。

我的目录结构

2.pom文件添加依赖包

<?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>zhou</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>
        <spring.version>5.0.2.RELEASE</spring.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <mysql.version>8.0.16</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>
        </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>

        <!--连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>

    </dependencies>

    <build>
        <finalName>ssm</finalName>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.2</version>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                        <encoding>UTF-8</encoding>
                        <showWarnings>true</showWarnings>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>
</project>

3.spring-mybatis.xml

<?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>
    <typeAliases>
        <!--type: 要被定义成别名的数据类型-->
        <typeAlias type="zhou.model.Person" alias="person"/>
    </typeAliases>


    <!--
        数据库环境配置如果和spring整合就不需要配了，完全交给spring
        default:决定你要用哪个数据源
    -->
    <!--    <environments default="mysql">-->
    <!--        <environment id="mysql">-->
    <!--            <transactionManager type="JDBC"/>-->
    <!--            <dataSource type="POOLED">-->
    <!--                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>-->
    <!--                <property name="url" value="jdbc:mysql://localhost:3306/test?serverTimezone=UTC"/>-->
    <!--                <property name="username" value="root"/>-->
    <!--                <property name="password" value="root"/>-->
    <!--            </dataSource>-->
    <!--        </environment>-->

    <!--        &lt;!&ndash;        <environment id="oracle">&ndash;&gt;-->
    <!--        &lt;!&ndash;            <transactionManager type="JDBC"/>&ndash;&gt;-->
    <!--        &lt;!&ndash;            <dataSource type="POOLED">&ndash;&gt;-->
    <!--        &lt;!&ndash;                <property name="driver" value="${driver}"/>&ndash;&gt;-->
    <!--        &lt;!&ndash;                <property name="url" value="${url}"/>&ndash;&gt;-->
    <!--        &lt;!&ndash;                <property name="username" value="${username}"/>&ndash;&gt;-->
    <!--        &lt;!&ndash;                <property name="password" value="${password}"/>&ndash;&gt;-->
    <!--        &lt;!&ndash;            </dataSource>&ndash;&gt;-->
    <!--        &lt;!&ndash;        </environment>&ndash;&gt;-->
    <!--    </environments>-->
    <!--
        管理每张表的映射文件
        resource: 引入映射文件，注意包之间用/
    -->
    <!--    <mappers>-->
    <!--        <mapper resource="mappings/PersonMapper.xml"/>-->
    <!--        <mapper resource="mappings/OrdersMapper.xml"/>-->
    <!--        <mapper resource="mappings/OrderDetailsMapper.xml"/>-->
    <!--        <mapper resource="mappings/PersonRoleMapper.xml"/>-->
    <!--        <mapper resource="mappings/RoleMapper.xml"/>-->
    <!--        <mapper resource="mappings/IdCardMapper.xml"/>-->
    <!--    </mappers>-->
</configuration>

4.mybatis逆向生成 generatorConfig.xml配置（便可执行生成映射文件即可https://blog.youkuaiyun.com/qq_36957885/article/details/98473244这篇中有讲如何生成）

 

<?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>

    <!--导入属性配置-->
    <properties resource="generator.properties"></properties>


    <!--指定特定数据库的jdbc驱动jar包的位置(绝对路径)-->
    <classPathEntry location="${jdbc.driverLocation}"/>

    <context id="default" targetRuntime="MyBatis3">

        <!-- optional，旨在创建class时，对注释进行控制 -->
        <commentGenerator>
            <!--是否去掉自动生成的注释 true:是-->
            <property name="suppressDate" value="true"/>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>

        <!--jdbc的数据库连接：驱动类、链接地址、用户名、密码-->
        <jdbcConnection
                driverClass="${jdbc.driverClass}"
                connectionURL="${jdbc.connectionURL}"
                userId="${jdbc.userId}"
                password="${jdbc.password}">
        </jdbcConnection>

        <!-- 非必需，类型处理器，在数据库类型和java类型之间的转换控制-->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false"/>
        </javaTypeResolver>

        <!-- Model模型生成器,用来生成含有主键key的类，记录类 以及查询Example类
            targetPackage     指定生成的model生成所在的包名
            targetProject     指定在该项目下所在的路径
        -->
        <javaModelGenerator targetPackage="com.model"
                            targetProject="src/main/java">
            <property name="enableSubPackages" value="true"/>
            <property name="trimStrings" value="true"/>
        </javaModelGenerator>


        <!--Mapper映射文件生成所在的目录 为每一个数据库的表生成对应的SqlMap文件 -->
        <sqlMapGenerator targetPackage="mappings"
                         targetProject="src/main/resources">
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>

        <!-- 客户端代码，生成易于使用的针对Model对象和XML配置文件 的代码
                type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象
                type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象
                type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口
        -->
        <!--  <javaClientGenerator type="XMLMAPPER" targetPackage="zhou.dao"-->
        <!--                       targetProject="src/main/java">-->
        <!--      <property name="enableSubPackages" value="true"/>-->
        <!--  </javaClientGenerator>-->

        <!-- 数据表进行生成操作 tableName:表名; domainObjectName:对应的DO -->
        <!-- domainObjectName="user"-->

        <table tableName="person"
               enableCountByExample="false" enableUpdateByExample="false"
               enableDeleteByExample="false" enableSelectByExample="false"
               selectByExampleQueryId="false">
        </table>

    </context>
</generatorConfiguration>

5.数据库配置文件generator.properties

#jar路径配置本地的
jdbc.driverLocation=C:\\Users\\MrZhou\\.m2\\repository\\mysql\\mysql-connector-java\\8.0.16\\mysql-connector-java-8.0.16.jar
jdbc.driverClass=com.mysql.cj.jdbc.Driver
jdbc.connectionURL=jdbc:mysql://localhost:3306/test?serverTimezone=UTC
jdbc.userId=root
jdbc.password=root

6.log文件配置log4j.properties

# Configure logging for testing: optionally with log file
log4j.rootLogger=WARN, stdout
# log4j.rootLogger=WARN, stdout, logfile

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n
log4j.appender.stdout.Encoding=UTF-8

log4j.appender.logfile=org.apache.log4j.FileAppender
log4j.appender.logfile.File=target/spring.log
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

7.beans.xml配置

<?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-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
">
    <!-- 1.配置jdbc文件 -->
    <!--    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">-->
    <!--        <property name="locations" value="classpath:generator.properties"/>-->
    <!--    </bean>-->

    <!-- 2.扫描的包路径，这里不扫描被@Controller注解的类 --><!--使用<context:component-scan/> 可以不在配置<context:annotation-config/> -->
    <context:component-scan base-package="com.service"></context:component-scan>

    <!--配置开源连接池 Druid连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/test?serverTimezone=UTC"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <!--Spring整合MyBatis框架，SqlSessionFactoryBean创建工厂对象-->
    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:mappings/*.xml"></property>

        <!-- 配置spring-mybatis文件
            如果用了mapperLocations去加载mappings映射文件这里便不用配置了
        -->
        <!-- <property name="configLocation" value="claspring-mybatis.xml"></property>-->
    </bean>

    <!--配置扫描dao接口所在的包-->
    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactory" ref="sessionFactory"/>
        <property name="basePackage" value="com.dao"/>
    </bean>

    <!--配置声明式事务管理-->
    <!--平台事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--配置事务的通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <!-- 事务的传播特性-->
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="select*" read-only="true"/>
            <tx:method name="delect*" read-only="true"/>
            <tx:method name="update*" read-only="true"/>
            <tx:method name="save*" read-only="true"/>
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>

    <!--配置事务的增强-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.service.*ServiceImpl.*(..))"/>
    </aop:config>


</beans>

8.spring-mvc.xml

 

 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:p="http://www.springframework.org/schema/p"
       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-3.2.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.2.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

    <!-- 扫描controller（controller层注入） -->
    <context:component-scan base-package="com.controller"></context:component-scan>


    <!--视图解析器-->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!--异常处理器、文件上传解析器、拦截器、哪些资源不拦截-->

    <!--mvc注解支持  ,这个注解可加可不加，一般用于自配置的组件使用 使用当前注解-->
    <!--<mvc:annotation-driven />-->

</beans>

9.web.xml配置

 

<!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>

    <!--加载类路径下的配置文件-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:beans.xml</param-value>
    </context-param>

    <!--配置监听器，监听器默认会加载/WEB-INF目录下的配置文件-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!--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:spring-mvc.xml</param-value>
        </init-param>
        <!--启动加载-->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--解决post请求中文乱码的过滤器-->
    <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>

10.dao层接口PersonDao

package com.dao;

import com.model.Person;

import java.util.List;

public interface PersonDao {
    List<Person> selectAll();
}

11.service层PersonService

package com.service;

import com.model.Person;

import java.util.List;

public interface PersonService {
    List<Person> selectAll();
}

12.ServcieImpl层PersonServiceImpl

package com.service.impl;

import com.dao.PersonDao;
import com.model.Person;
import com.service.PersonService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

//名字可以不加，默认就是首字母小写的类名
//@Service("personService")
@Service
public class PersonServiceImpl implements PersonService {
    @Autowired
    private PersonDao personDao;

    @Override
    public List<Person> selectAll() {

        return personDao.selectAll();
    }
}

13.controller层PersonController

package com.controller;

import com.model.Person;
import com.service.PersonService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

@Controller
@RequestMapping("/aa")
public class TestController {
    @Autowired
    private PersonService personService;

    @RequestMapping("/test")
    public String test(){
        List<Person> list = personService.selectAll();
        for (Person p: list
             ) {
            System.out.println(p);
        }
        return "test";
    }
}

14.测试类

package com.controller;

import com.dao.PersonDao;
import com.model.Person;
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;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:beans.xml"})
public class PersonDaoTest {

    @Autowired
    private PersonDao personDao;

    @Test
    public void selectAll() {
        List<Person> list = personDao.selectAll();
        for (Person p: list
        ) {
            System.out.println(p.toString());
        }
    }
}

15.运行

 

 

忽略此处log乱码，懒得没改编码

16.遇到异常的处理

https://blog.youkuaiyun.com/qq_36957885/article/details/99344688

看到这了，点个赞呗！！！

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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