在《springBoot实战》 一书中前面两部分分别介绍了spring 和 springMVC的高级特性，并且基于java类配置有一套web层的demo，但是没有将web层整合dao层，于是我试着整合了下，也方便以后写测试demo。下面是我的整理
pom.xml（一些基础的jar包，可能有些在这个demo中不会用到）
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tao</groupId>
<artifactId>springmvc_demo_simple</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<!-- Generic properties -->
<java.version>1.7</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>${spring-framework.version}</version>
</dependency>
<!-- 其他web依赖 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${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>${spring-framework.version}</version>
</dependency>
<!-- 使用SLF4J和LogBack作为日志 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${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>
<!--对json和xml格式的支持 -->
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-xml</artifactId>
<version>2.5.3</version>
</dependency>
<!-- 格式化对象，方便输出日志 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.41</version>
</dependency>
<!-- file upload -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<!-- 非必需，可简化IO操作 -->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-framework.version}</version>
<scope>test</scope> <!-- 存活在测试周期 -->
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- mybatis核心包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.6</version>
</dependency>
<!-- mybatis/spring包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- 导入Mysql数据库链接jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring-framework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring-framework.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/aspectj/aspectjweaver -->
<dependency>
<groupId>aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.5.3</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>${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>配置类（类似于springMVC.xml）
@Configuration
@EnableWebMvc
@EnableScheduling
@ComponentScan(basePackages = { "com.tao.demo.web" })
public class MyMvcConfig extends WebMvcConfigurerAdapter{
@Bean
public InternalResourceViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setPrefix("/WEB-INF/classes/views/");
viewResolver.setSuffix(".jsp");
viewResolver.setViewClass(JstlView.class);
return viewResolver;
}
@Bean
public MultipartResolver multipartResolver(){
CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver();
commonsMultipartResolver.setMaxUploadSize(1000000);
return commonsMultipartResolver;
}
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
//静态资源
registry.addResourceHandler("/assets/**").addResourceLocations("classpath:/assets/");
}
@Bean
public DemoInterceptor demoInterceptor(){
return new DemoInterceptor();
}
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(demoInterceptor());
}
@Override
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("/index");
}
@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
configurer.setUseSuffixPatternMatch(false);
}
@Override
public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
converters.add( new MyMessageConverter());
}
}拦截器
public class DemoInterceptor extends HandlerInterceptorAdapter {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
long startTime = System.currentTimeMillis();
request.setAttribute("startTime",startTime);
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
long startTime = (Long)request.getAttribute("startTime");
request.removeAttribute("startTime");
long endTime = System.currentTimeMillis();
System.out.println("本次请求处理时间"+new Long(endTime-startTime)+"ms");
request.setAttribute("handingTime",endTime-startTime);
}
}自定义消息转换器
public class MyMessageConverter extends AbstractHttpMessageConverter<DemoObj>{
public MyMessageConverter() {
super(new MediaType("application","x-tao", Charset.forName("UTF-8")));
}
@Override
protected boolean supports(Class<?> aClass) {
return DemoObj.class.isAssignableFrom(aClass);
}
@Override
protected DemoObj readInternal(Class<? extends DemoObj> aClass, HttpInputMessage httpInputMessage) throws IOException, HttpMessageNotReadableException {
String s = StreamUtils.copyToString(httpInputMessage.getBody(), Charset.forName("UTF-8"));
String[] split = s.split("-");
return new DemoObj(Long.valueOf(split[0]),split[1]);
}
@Override
protected void writeInternal(DemoObj obj, HttpOutputMessage httpOutputMessage) throws IOException, HttpMessageNotWritableException {
String s = "hello:" + obj.getId() + "-" + obj.getName();
httpOutputMessage.getBody().write(s.getBytes());
}
}
初始化（相当于web.xml）
public class WebInitializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
context.register(MyMvcConfig.class);
context.setServletContext(servletContext);
ServletRegistration.Dynamic servlet = servletContext.addServlet("dispatcher",new DispatcherServlet(context));
servlet.addMapping("/");
servlet.setLoadOnStartup(1);
servlet.setAsyncSupported(true);
// 整合dao层的时候需要
// servletContext.setInitParameter("contextConfigLocation","classpath:spring-mybatis.xml");
// servletContext.addListener(ContextLoaderListener.class);
}
}控制层
@Controller
public class HelloController {
@RequestMapping("index")
public String hello(){
System.out.println("hello world");
return "index";
}
}view
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<pre>
Welcome to Spring MVC world!
</pre>
</body>
</html>整体目录结构
运行结果
java
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