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

最新推荐文章于 2023-10-13 16:39:54 发布

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最新推荐文章于 2023-10-13 16:39:54 发布

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分类专栏： spring-mvc 文章标签： spring spring mvc

本文链接：https://blog.youkuaiyun.com/kkgbn/article/details/73826639

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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.youkuaiyun.com/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>