先对Spring SpringMVC和Mybatis单独进行配置,最后对三者进行整合配置
Spring
实际使用中,一般会使用注解+xml配置来实现spring功能,其中xml配置对上文进行总结,配置内容如下
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<? xml version = "1.0" encoding = "UTF-8" ?>
<!--在使用spring 相关jar包的时候进行配置 每个jar包对应一个xmlns和schemaLocation路径-->
<!--格式基本相关 只要修改相关的关键字-->
< beans xmlns = "http://www.springframework.org/schema/beans"
xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop = "http://www.springframework.org/schema/aop"
xmlns:context = "http://www.springframework.org/schema/context"
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/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 开启注解扫描 ,才可以使用注解 可以使用use-default-filter配合include-filer和exclude-filter使用 -->
< context:component-scan base-package = "com.jdbcTemplate" ></ context:component-scan >
<!-- 开启aop-->
< aop:aspectj-autoproxy ></ aop:aspectj-autoproxy >
<!-- JdbcTemplate使用-->
< bean id = "dataSource" class = "com.alibaba.druid.pool.DruidDataSource" destroy-method = "close" >
< property name = "url" value = "jdbc:mysql:/book" />
< property name = "username" value = "root" />
< property name = "password" value = "LRY990722" />
< property name = "driverClassName" value = "com.mysql.jdbc.Driver" />
</ bean >
< bean id = "'jdbcTemplate" class = "org.springframework.jdbc.core.JdbcTemplate" >
< property name = "dataSource" ref = "dataSource" ></ property >
< bean />
<!--创建事务管理器-->
< bean id = "transactionManager" class = "org.springframework.jdbc.datasource.DataSourceTransactionManager" >
<!--注入数据源-->
< property name = "dataSource" ref = "dataSource" ></ property >
<!--开启事务注解-->
< tx:annotation-driven transaction-manager = "transactionManager" ></ tx:annotation-driven >
</ bean >
</ beans >
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springMVC
web.xml配置文件
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<!-- 配置SpringMVC的前端控制器,对浏览器发送的请求统一进行处理 -->
< servlet >
< servlet-name >springMVC</ servlet-name >
< servlet-class >org.springframework.web.servlet.DispatcherServlet</ servlet-class >
<!-- 通过初始化参数指定SpringMVC配置文件的位置和名称 -->
< init-param >
<!-- contextConfigLocation为固定值 -->
< param-name >contextConfigLocation</ param-name >
<!-- 使用classpath:表示从类路径查找配置文件,例如maven工程中的src/main/resources -->
< param-value >classpath:springMVC.xml</ param-value >
</ init-param >
<!--
作为框架的核心组件,在启动过程中有大量的初始化操作要做
而这些操作放在第一次请求时才执行会严重影响访问速度
因此需要通过此标签将启动控制DispatcherServlet的初始化时间提前到服务器启动时
-->
< load-on-startup >1</ load-on-startup >
</ servlet >
< servlet-mapping >
< servlet-name >springMVC</ servlet-name >
<!--
设置springMVC的核心控制器所能处理的请求的请求路径
/所匹配的请求可以是/login或.html或.js或.css方式的请求路径
但是/不能匹配.jsp请求路径的请求
-->
< url-pattern >/</ url-pattern >
</ servlet-mapping >
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springMVC.xml配置文件
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<!-- 自动扫描包 -->
< context:component-scan base-package = "com.atguigu.mvc.controller" />
<!-- 配置Thymeleaf视图解析器 -->
< bean id = "viewResolver" class = "org.thymeleaf.spring5.view.ThymeleafViewResolver" >
< property name = "order" value = "1" />
< property name = "characterEncoding" value = "UTF-8" />
< property name = "templateEngine" >
< bean class = "org.thymeleaf.spring5.SpringTemplateEngine" >
< property name = "templateResolver" >
< bean class = "org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver" >
<!-- 视图前缀 -->
< property name = "prefix" value = "/WEB-INF/templates/" />
<!-- 视图后缀 -->
< property name = "suffix" value = ".html" />
< property name = "templateMode" value = "HTML5" />
< property name = "characterEncoding" value = "UTF-8" />
</ bean >
</ property >
</ bean >
</ property >
</ bean >
<!--
处理静态资源,例如html、js、css、jpg
若只设置该标签,则只能访问静态资源,其他请求则无法访问
此时必须设置<mvc:annotation-driven/>解决问题
-->
< mvc:default-servlet-handler />
<!-- 开启mvc注解驱动 -->
< mvc:annotation-driven >
< mvc:message-converters >
<!-- 处理响应中文内容乱码 -->
< bean class = "org.springframework.http.converter.StringHttpMessageConverter" >
< property name = "defaultCharset" value = "UTF-8" />
< property name = "supportedMediaTypes" >
< list >
< value >text/html</ value >
< value >application/json</ value >
</ list >
</ property >
</ bean >
</ mvc:message-converters >
</ mvc:annotation-driven >
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Mybatis
Mybatis-config.xml中配置文件
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<? 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 >
< environments default = "development" >
< environment id = "development" >
< transactionManager type = "JDBC" />
< dataSource type = "POOLED" >
< property name = "driver" value = "com.mysql.jdbc.Driver" />
< property name = "url" value = "jdbc:mysql://localhost:3306/mybatis?useSSL=true&useUnicode=true&characterEncoding=utf8" />
< property name = "username" value = "root" />
< property name = "password" value = "LRY990722" />
</ dataSource >
</ environment >
</ environments >
<!-- mapper.xml都需要在mybatis核心配置文件中配置-->
< mappers >
< mapper resource = "com/example/mapper/UserMapper.xml" />
</ mappers >
</ configuration >
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mapper.xml中配置文件如下:
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<? 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.example.mapper.UserMapper" >
< select id = "selectUser" resultType = "com.example.pojo.User" >
select * from user
</ select >
</ mapper >
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有时候读取不到mapperl.xml配置的原因,提示java.io.IOException: Could not find resource,原因可能有
1)配置文件是否在Resource路径下;
2)如果在src/main/java目录下,需要在项目的pom.xml中加入;
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< build >
< resources >
< resource >
< directory >src/main/java</ directory >
< includes >
< include >**/*.properties</ include >
< include >**/*.xml</ include >
</ includes >
< filtering >false</ filtering >
</ resource >
< resource >
< directory >src/main/resources</ directory >
< includes >
< include >**/*.properties</ include >
< include >**/*.xml</ include >
</ includes >
< filtering >false</ filtering >
</ resource >
</ resources >
</ build >
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使得可以读取src/main/java下的xml和properti文件
3)如果还没有结果,看是否是自己的多层路径的问题,有时候创建文件时候例如com.example.mapper不是三层路径,可以展开看一下。
SSM整合
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原文链接:https://blog.csdn.net/foreverlove1999/article/details/119967444