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 > |
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 > |
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 > |
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 > |
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 > |
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 > |
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