基于IDEA的SSM配置文件整合基础(有步骤)

今天进行了SSM框架的整合,遇到了很多的错误,但所幸都有解决,以下为基础的整合步骤,后续待完善

1.SSM整合所需要

  spring的jar(包含tx)、springmvc的jar、mybatis.jar、mybatis-spring.jar、tomcat、commons-dbcp.jar等

2.创建Maven项目

 

 

 

这里选择如下图,否则Maven创建可能不成功 Name:archetypeCatalog    Value:internal

 

 

 然后一直next,最后Maven项目创建成功,如下图

 

 

 

 

3.更改web.xml文件,由于默认的是web2.3,这个版本有点老了,这里我选择用4.0

 

 

 

 

 

 

 这样web的版本就更改了

 4.导入所需要的依赖jar包

 

 <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <!--springmvc-->
    <!-- http://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.18.RELEASE</version>
    </dependency>

    <!-- http://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>


    <!--mybatis-->
    <!--Mysql-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.16</version>
    </dependency>
    <!--Mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.2</version>
    </dependency>
    <!--Log4j-->
    <!-- http://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    <!--dbcp-->
    <dependency>
      <groupId>commons-dbcp</groupId>
      <artifactId>commons-dbcp</artifactId>
      <version>1.4</version>
    </dependency>


    <!--Mybatis与Spring整合jar-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.2</version>
    </dependency>

    <!--增加事务支持-->
    <!-- http://mvnrepository.com/artifact/org.springframework/spring-tx -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.3.18.RELEASE</version>
    </dependency>

    <!-- http://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.18.RELEASE</version>
    </dependency>

  </dependencies>

 

  注意:IDEA中的Maven项目需要指定读取资源路径,否则可能无法读取资源(.properties、Mapper)

<build>   
    <resources>
      <!--指定xml文件位置-->
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
        <!--这里写成true会造成编译注释错误-->
        <filtering>false</filtering>
      </resource>

      <!--指定xml文件位置-->
      <resource>
        <directory>src/main/resource</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
        <!--这里写成true会造成编译注释错误-->
        <filtering>false</filtering>
      </resource>
    </resources>
</build>

  

 

5.建立需要的包,如dao、service、controller、并根据数据库建立对应的类

 

 

 

6.配置Mybatis-config.xml、spring-dao.xml、spring-service.xml、spring-mvc.xml、applicationContext.xml(这里,我将文件分开其实除了Mybatis-config.xml,其余都可以整合一起写)

6.1、Mybatis-config.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>
    <!--增加日志的支持-->
    <settings>
        <setting name="logImpl" value="log4j"/>
    </settings>
    <!--取别名-->
    <typeAliases>
        <package name="com.study.pojo"/>
    </typeAliases>
    
    <mappers>
        <package name="com.study.dao"/>
    </mappers>
</configuration>

  6.2、spring-dao.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"
       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
">

    <context:component-scan base-package="com.study.dao.impl"/>
    <context:property-placeholder location="classpath:db.properties"/>
    <!--配置数据源-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <!--生成sqlsessionfactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    <!--生成方法-->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>


</beans>

  6.3、spring-service.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"
       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
">
    <import resource="spring-dao.xml"/>
    <context:component-scan base-package="com.study.service.impl"/>
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

</beans>

  

6.4、spring-mvc.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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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
">

    <!--配置扫描器-->
    <context:component-scan base-package="com.study.controller"/>
    <mvc:annotation-driven/>
    <!--静态-->
    <mvc:default-servlet-handler/>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

  

6.5、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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
">

    <import resource="spring-mvc.xml"/>
    <import resource="spring-dao.xml"/>
    <import resource="spring-service.xml"/>

</beans>

  6.6、db.properties(使用的dbcp数据连接池,不整合时候可以不加jdbc但是整合后不在前面加上jdbc就会出现错误)

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/自己的数据库名字?useUnicode=true&characterEncoding=utf-8&autoReconnect=true&failOverReadOnly=false
jdbc.username=账户
jdbc.password=密码

  6.7、log4j.properties(这个可以网上找)

log4j.rootLogger=DEBUG,Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.org.apache=INFO

  至此,配置文件基本整合完毕

7、根据需求,在对应层面编写对应的代码

提示:

    Controller层的注解为@Controller

    Service层的注解为  @Service

    Dao层的注解为    @Repository

8、关于maven导包问题

建议:尽量使用Maven进行导包,如果手动导包可能会出现一些莫名的错误

9、问题总结

  Ⅰ、在创建Maven项目的时候有两点需要注意:①.需要指定资源文件路径、也就是在pom.xml文件的build中添加指定。②.在进行导包的时候尽量使用Maven进行导包

  Ⅱ、注解的使用,不同的层使用不同的注解(@Controller、@Service、@Repository),但是这些注解都来自同一个父注解,可以自行网上查看

  Ⅲ、关于在配置文件中必须配置的属性(大概):①.DispatcherServlet(SpringMVC的核心) ②、dataSource(数据源)③、DataSourceTransactionManager(事务支持,没这个整合会出错)④、SqlSessionFactoryBean(获取sqlsessionFactory)⑤、SqlSessionTemplate

 

 

关于后台传Json到前端乱码问题:

解决方式一:在RequestMapping中添加produces = "application/json;charset=utf- 8"
@RequestMapping(value = "/a",produces = "application/json;charset=utf- 8")

 

解决方式二:在<mvc:annotation-driven>中加入如下代码
    <!--配置扫描器-->
    <context:component-scan base-package="com.study.controller"/>
    <mvc:annotation-driven>
        <!--解决Json乱码问题-->
        <mvc:message-converters register-defaults="true">

            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <property name="supportedMediaTypes" value="text/html;charset=UTF-8" />
            </bean>

            <bean id="jacksonMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                <property name="objectMapper">
                    <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
                        <property name="failOnEmptyBeans" value="false"/>
                    </bean>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

  

 

附:有问题欢迎大家指出

 


 

 

 

 

 

 

 

posted @ 2019-10-29 22:48  源鱼  阅读(...)  评论(...编辑  收藏