后端
Java
Spring

SpringMVC项目的常用配置

# SpringMVC的常用配置

# 常用配置

Spring的三层架构的配置文件常用的配置如下：

applicationContext.xml配置文件
jdbc.properties的配置文件
spring-mvc.xml的配置文件

# 1.1 数据库的配置文件

jdbc.properties的配置文件常用于存放数据库的信息。

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///test?useSSL=false
jdbc.username=root
jdbc.password=000000

# 1.2 ApplicationContext

applicationContext.xml配置文件如下：

通常配置引用配置文件的时候需要添加命名空间
使用Jdbc连接数据库，使用引入配置文件的方式配置数据源(使用引用变量的方式)
Spring支持JdbcTemplate,需要用的时候需要导入
如果使用配置文件的方式添加bean实例，需要添加业务层和Dao层的Bean实例，如下是额外添加的配置，userDao和roleDao需要使用jdbcTemplate，所以需要添加。

<?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">

    <!--引入jdbc配置文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!--配置数据源-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!--配置JdbcTemplate模板-->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    
    <bean id="roleDao" class="com.example.dao.impl.RoleDaoImpl">
        <property name="jdbcTemplate" ref="jdbcTemplate"/>
    </bean>

    <bean id="roleService" class="com.example.service.impl.RoleServiceImpl">
        <property name="roleDao" ref="roleDao"/>
    </bean>

    <bean id="userDao" class="com.example.dao.impl.UserDaoImpl">
        <property name="jdbcTemplate" ref="jdbcTemplate"/>
    </bean>
    <bean id="userService" class="com.example.service.impl.UserServiceImpl">
        <property name="userDao" ref="userDao"/>
        <property name="roleDao" ref="roleDao"/>
    </bean>
</beans>

# 1.3 Spring-MVC

spring-mvc.xml的配置文件

建议默认配置mvc的注解驱动和静态资源权限开放
配置试图解析器的作用主要是用做资源文件匹配前缀和后缀
web层的需要扫描当前的组件，需要配置组件扫描

<?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mvc的注解驱动-->
    <mvc:annotation-driven/>


    <!--配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/pages/"/>
        <property name="suffix" value=".jsp"/>
     </bean>

    <!--静态资源权限开放-->
    <mvc:default-servlet-handler/>

    <!--组件扫描-->
    <context:component-scan base-package="com.example.controller"/>
</beans>

# 1.4 Web配置文件

web.xml的配置文件

配置了spring-mvc的配置文件，需要配置前端控制器
包括想要使用applicationContext的配置文件，需要配置全局参数
spring需要配置监听器
针对post请求的提交数据，需要配置UTF-8的编码转换，否则会乱码

<!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>

 <!--配置全局参数-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

  <!--配置Spring监听器-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!--配置SpringMVC的前端控制器-->
  <servlet>
    <servlet-name>DispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>DispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

    <!--配置编码过滤器-->
    <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>

# 1.5 Jsp页面显示乱码

确定依赖包:

<!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

确定标记:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

修改.jsp页面加上下面的标签

<%@ page isELIgnored="false" %>

# 1.6 Spring的依赖

  <dependencies>
    <!--mysql数据库-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.47</version>
    </dependency>
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.10</version>
    </dependency>
    <!--Junit测试-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <!--Spring—context依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.1.9.RELEASE</version>
    </dependency>
    <!--Spring-test依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.1.9.RELEASE</version>
    </dependency>
    <!--Spring-web依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.1.9.RELEASE</version>
    </dependency>
    <!--Spring-webmvc依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.1.9.RELEASE</version>
    </dependency>
    <!--servlet依赖-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
      <scope>provided</scope>
    </dependency>
    <!--jsp页面依赖-->
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>javax.servlet.jsp-api</artifactId>
      <version>2.2.1</version>
      <scope>provided</scope>
    </dependency>
    <!--jstl依赖-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!--jstl-impl依赖-->
    <dependency>
      <groupId>org.glassfish.web</groupId>
      <artifactId>jstl-impl</artifactId>
      <version>1.2</version>
    </dependency>
    <!--json-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.9.0</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.0</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.9.0</version>
    </dependency>
    <!--文件上传依赖-->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>
    <!--io依赖-->
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.3</version>
    </dependency>
    <!--Spring整合Jdbc依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.0.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.0.5.RELEASE</version>
    </dependency>
  </dependencies>

上次更新: 2023/11/28, 22:03:59

← Spring整合Jdbc SpringMVC拦截器→