Spring mvc(1) 搭建一个最简单的Spring mvc, 以及最简单的logback的配置

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1.最简单的Spring mvc

1 pom.xml

<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/maven-v4_0_0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>test-mvc</groupId>    <artifactId>demo-mvc</artifactId>    <packaging>war</packaging>    <version>0.0.1-SNAPSHOT</version>    <name>demo-mvc Maven Webapp</name>    <url>http://maven.apache.org</url>    <dependencies>        <dependency>            <groupId>junit</groupId>            <artifactId>junit</artifactId>            <version>3.8.1</version>            <scope>test</scope>        </dependency>        <dependency>            <groupId>org.springframework</groupId>            <artifactId>spring-webmvc</artifactId>            <version>4.3.5.RELEASE</version>        </dependency>    </dependencies>    <build>        <finalName>demo-mvc</finalName>    </build></project>

2 web.xml

<!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>    <!--    icon?,display- name?,description?,distributable?,    context-param*,filter*,filter-mapping*,listener*,    servlet*,servlet- mapping*,session-config?,mime-mapping*,    welcome-file-list?,error-page*,taglib*,resource-env-ref*,resource-ref*,    security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*,ejb-local-ref*)".     -->    <display-name>Archetype Created Web Application demo_mvc</display-name>    <filter>        <filter-name>encoding</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>encoding</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>    <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener>    <listener>        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>    </listener>    <!-- servlet start -->    <servlet>        <servlet-name>demo</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>demo</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping>    <!-- end --></web-app>

3 /demo-mvc/src/main/webapp/WEB-INF/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" xmlns:aop="http://www.springframework.org/schema/aop"    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:util="http://www.springframework.org/schema/util" xmlns:p="http://www.springframework.org/schema/p"    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-4.0.xsd  http://www.springframework.org/schema/tx     http://www.springframework.org/schema/tx/spring-tx-4.0.xsd  http://www.springframework.org/schema/context     http://www.springframework.org/schema/context/spring-context-4.0.xsd  http://www.springframework.org/schema/util     http://www.springframework.org/schema/util/spring-util-4.0.xsd  "></beans>

4 demo-mvc/src/main/webapp/WEB-INF/demo-servlet.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:p="http://www.springframework.org/schema/p"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:util="http://www.springframework.org/schema/util"     xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="http://www.springframework.org/schema/beans       http://www.springframework.org/schema/beans/spring-beans-3.0.xsd       http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context-3.0.xsd       http://www.springframework.org/schema/util        http://www.springframework.org/schema/util/spring-util-3.0.xsd        http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc.xsd      ">         <!-- 开启注解模式驱动 -->             <mvc:annotation-driven></mvc:annotation-driven>         <!-- 扫包 -->         <context:component-scan base-package="demo"></context:component-scan>         <!-- 静态资源过滤 -->         <mvc:resources location="/resources/" mapping="/resources/**"/>         <!-- 视图渲染 jsp/freemaker/velocity-->         <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">               <!-- 制定页面存放的路径 -->               <property name="prefix" value="/WEB-INF/pages"></property>               <!-- 文件的后缀 -->               <property name="suffix" value=".jsp"></property>         </bean> </beans>

5 Controller.java

package demo;import javax.servlet.http.HttpServletRequest;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;/** * 参考示例 */@RestController//@Order(value = 5)public class ControllerExcample{    @RequestMapping("/tst")    public Object get_value(HttpServletRequest req) {        return "heihei";    }}

工程结构如图
这里写图片描述

2 spring mvc + logback

1 添加pom.xml依赖

<dependency>            <groupId>ch.qos.logback</groupId>            <artifactId>logback-classic</artifactId>            <version>1.1.7</version>        </dependency>

2 在src/main/resource添加logback.xml

<configuration>    <!-- 参考 http://blog.csdn.net/kkgbn/article/details/51457686 -->    <!-- %m输出的信息,%p日志级别,%t线程名,%d日期,%c类的全名 -->    <property name="log_path" value="demo_logs"/>    <property name="maxHistory" value="30"/>    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">        <encoder>            <charset>UTF-8</charset>            <pattern>%d %p (%file:%line\)- %m%n</pattern>        </encoder>    </appender>    <appender name="console"        class="ch.qos.logback.core.rolling.RollingFileAppender">        <File>${log_path}/console.log</File>        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">            <fileNamePattern>${log_path}/console.log.%d</fileNamePattern>            <maxHistory>${maxHistory}</maxHistory>          </rollingPolicy>        <encoder>            <pattern>                %d (%file:%line\)- %m%n            </pattern>        </encoder>    </appender>    <appender name="baselog"        class="ch.qos.logback.core.rolling.RollingFileAppender">        <File>${log_path}/base.log</File>        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedR        ollingPolicy">            <fileNamePattern>${log_path}/base.log.%d</fileNamePattern>            <maxHistory>${maxHistory}</maxHistory>          </rollingPolicy>        <encoder>            <pattern>                %d (%file:%line\)- %m%n            </pattern>        </encoder>    </appender>    <appender name="userlog"        class="ch.qos.logback.core.rolling.RollingFileAppender">        <File>${log_path}/user.log</File>        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">            <fileNamePattern>${log_path}/user.log.%d</fileNamePattern>            <maxHistory>${maxHistory}</maxHistory>          </rollingPolicy>        <encoder>            <pattern>                %d (%file:%line\)- %m%n            </pattern>        </encoder>    </appender>    <root level="info">        <appender-ref ref="STDOUT" />        <!-- <appender-ref ref="console" /> -->    </root>    <!-- logger name="com.demo" level="info" -->    <logger name="demo" level="debug">        <appender-ref ref="baselog" />    </logger>    <logger name="USER">        <appender-ref ref="userlog" />    </logger>    <jmxConfigurator/></configuration>

3 Java代码

package demo;import org.slf4j.Logger;import org.slf4j.LoggerFactory;public class LogCore{    public static Logger  BASE = LoggerFactory.getLogger(LogCore.class);    public static Logger  USER = LoggerFactory.getLogger("USER");}

4 查看日志

1 查看tomcat的日志(与本文无关)

在catalina路径也就是-Dcatalina.base=/Users/bao/data/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0 参数
这里写图片描述

2 查看logback的日志

也就是System.getProperty(“user.dir”) 输出的地址
这里写图片描述

3 将配置文件移动到/src/main/resource里

1 修改web.xml

displayname 标签后添加

    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:applicationContext.xml</param-value>    </context-param>

servlet 的配置添加contextConfigLocation

<servlet>        <servlet-name>demo</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <param-name>contextConfigLocation</param-name>            <param-value>classpath:demo-servlet.xml</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <servlet-mapping>        <servlet-name>demo</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping>

移动demo-servlet.xml和applicationContext.xml

这里写图片描述

4 注意事項，找不到http servlet錯誤”The superclass “javax.servlet.http.HttpServlet” was not found on the Java Build “的解決方式

方式1（不推荐）在环境变量引入外部Tomcat作为库

这样打包的时候不打进去httpServlet，因为我们要将项目部署在Tomcat上，tomcat作为容器已经有这些jar了。
这里写图片描述

方式2，但是我们用maven 工程在编译的时候需要有这个包，而package的时候忽略。

<dependency>    <groupId>javax.servlet</groupId>    <artifactId>servlet-api</artifactId>    <version>2.5</version>    <scope>provided</scope></dependency>

就跟Spring boot使用外部Tomcat的时候添加依赖一样

<dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-tomcat</artifactId>    <scope>provided</scope></dependency>

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