【SpringMVC】之 IDEA 搭建SpringMVC（无web.xml）

预备

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按照 http://blog.csdn.net/fanfan4569/article/details/76419218 搭建简单 webapp

预备做完，再进行以下步骤

步骤

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（一）添加Spring MVC 支持

项目名 -> 右键 -> Add Framework Support

（二） 删除web.xml

目录结构

（三）配置pom.xml

下面是凡凡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>cn.donaldy</groupId>  <artifactId>SpringMVC4</artifactId>  <packaging>war</packaging>  <version>1.0-SNAPSHOT</version>  <name>SpringMVC4 Maven Webapp</name>  <url>http://maven.apache.org</url>  <properties>    <java.version>1.8</java.version>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>    <!-- Web -->    <jsp.version>2.2</jsp.version>    <jstl.version>1.2</jstl.version>    <servlet.version>3.1.0</servlet.version>    <!-- Spring -->    <spring-framework.version>4.1.5.RELEASE</spring-framework.version>    <!-- Logging -->    <logback.version>1.0.13</logback.version>    <slf4j.version>1.7.5</slf4j.version>  </properties>  <dependencies>    <dependency>      <groupId>javax</groupId>      <artifactId>javaee-web-api</artifactId>      <version>7.0</version>      <scope>provided</scope>    </dependency>    <!-- Spring MVC -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-webmvc</artifactId>      <version>${spring-framework.version}</version>    </dependency>    <!-- Other Web dependencies -->    <dependency>      <groupId>javax.servlet</groupId>      <artifactId>jstl</artifactId>      <version>${jstl.version}</version>    </dependency>    <dependency>      <groupId>javax.servlet</groupId>      <artifactId>javax.servlet-api</artifactId>      <version>${servlet.version}</version>      <scope>provided</scope>    </dependency>    <dependency>      <groupId>javax.servlet.jsp</groupId>      <artifactId>jsp-api</artifactId>      <version>${jsp.version}</version>      <scope>provided</scope>    </dependency>    <!-- Spring and Transactions -->    <dependency>      <groupId>org.springframework</groupId>      <artifactId>spring-tx</artifactId>      <version>${spring-framework.version}</version>    </dependency>    <!-- Logging with SLF4J & LogBack -->    <dependency>      <groupId>org.slf4j</groupId>      <artifactId>slf4j-api</artifactId>      <version>${slf4j.version}</version>    </dependency>    <dependency>      <groupId>log4j</groupId>      <artifactId>log4j</artifactId>      <version>1.2.16</version>    </dependency>    <dependency>      <groupId>org.slf4j</groupId>      <artifactId>jcl-over-slf4j</artifactId>      <version>${slf4j.version}</version>    </dependency>    <dependency>      <groupId>ch.qos.logback</groupId>      <artifactId>logback-classic</artifactId>      <version>${logback.version}</version>    </dependency>    <dependency>      <groupId>ch.qos.logback</groupId>      <artifactId>logback-core</artifactId>      <version>${logback.version}</version>    </dependency>    <dependency>      <groupId>ch.qos.logback</groupId>      <artifactId>logback-access</artifactId>      <version>${logback.version}</version>    </dependency>  </dependencies>  <build>    <finalName>SpringMVC4</finalName>    <plugins>      <plugin>        <groupId>org.apache.maven.plugins</groupId>        <artifactId>maven-compiler-plugin</artifactId>        <version>2.3.2</version>        <configuration>          <source>${java.version}</source>          <target>${java.version}</target>        </configuration>      </plugin>      <plugin>        <groupId>org.apache.maven.plugins</groupId>        <artifactId>maven-war-plugin</artifactId>        <version>2.3</version>        <configuration>          <failOnMissingWebXml>false</failOnMissingWebXml>        </configuration>      </plugin>    </plugins>  </build></project>

配置完，注意要用maven update下哦。

（四）配置logback.xml （可选）

配置logback.xml（在控制台打印日志），开发Spring MVC经常出现和参数类型相关的4XX错误，设置此项会看到更详细的错误信息。

<?xml version="1.0" encoding="utf-8" ?><configuration scan="true" scanPeriod="1 seconds">    <contextListener class="ch.qos.logback.classic.jul.LevelChangePropagator">        <resetJUL>true</resetJUL>    </contextListener>    <jmxConfiguratior />    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">        <encoder>            <pattern>logback: %d{HH:mm:ss.SSS} %logger{36} - %msg%n</pattern>        </encoder>    </appender>    <logger name="org.springframework.web" level="DEBUG" />    <root level="info">        <appender-ref ref="console" />    </root></configuration>

（五）Web配置

取代web.xml

/** * Created by DonaldY on 2017/8/3. */public class WebInitializer implements WebApplicationInitializer {    public void onStartup(ServletContext servletContext) throws ServletException {        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();        ctx.register(MyMvcConfig.class);        ctx.setServletContext(servletContext);        Dynamic servlet = servletContext.addServlet("dispatcher", new DispatcherServlet(ctx));        servlet.addMapping("/");        servlet.setLoadOnStartup(1);    }}

（六）Spring MVC 配置

普通的Spring 配置类

/** * Created by DonaldY on 2017/8/3. */@Configuration@EnableWebMvc@ComponentScan("cn.donaldy.highlight")public class MyMvcConfig {    @Bean    public InternalResourceViewResolver viewResolver() {        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();        viewResolver.setPrefix("/WEB-INF/classes/views/");        viewResolver.setSuffix(".jsp");        viewResolver.setViewClass(JstlView.class);        return viewResolver;    }}

（七）配置Controller

简单控制类

/** * Created by DonaldY on 2017/8/3. */@Controllerpublic class HelloController {    @RequestMapping("/hello")    public String hello() {        return "hello";    }}

（八）配置视图

简单视图

<%@ page contentType="text/html;charset=UTF-8" language="java" %><html>    <head>        <title>Title</title>    </head>    <body>        <h2>Welcome to Spring MVC world. </h2>        <h3>Hello, DonaldY.</h3>    </body></html>

（九）检验

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疑问

日志中还有不能理解的信息，再此记录下