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<code class="hljs" java="">package com.easyweb.config;
import javax.servlet.MultipartConfigElement;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration.Dynamic;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
/**
* 服务器启动入口类
*
* @author Administrator
*
*/
public class WebApplicationStartup implements WebApplicationInitializer {
private static final String SERVLET_NAME = Spring-mvc;
private static final long MAX_FILE_UPLOAD_SIZE = 1024 * 1024 * 5; // 5 Mb
private static final int FILE_SIZE_THRESHOLD = 1024 * 1024; // After 1Mb
private static final long MAX_REQUEST_SIZE = -1L; // No request size limit
/**
* 服务器启动调用此方法，在这里可以做配置 作用与web.xml相同
*/
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
// 注册springMvc的servlet
this.addServlet(servletContext);
// 注册过滤器
// servletContext.addFilter(arg0, arg1)
// 注册监听器
// servletContext.addListener(arg0);
}
/**
* 注册Spring servlet
*
* @param servletContext
*/
private void addServlet(ServletContext servletContext) {
// 构建一个application context
AnnotationConfigWebApplicationContext webContext = createWebContext(SpringMVC.class, ViewConfiguration.class);
// 注册spring mvc 的 servlet
Dynamic dynamic = servletContext.addServlet(SERVLET_NAME, new DispatcherServlet(webContext));
// 添加springMVC 允许访问的Controller后缀
dynamic.addMapping(*.html, *.ajax, *.css, *.js, *.gif, *.jpg, *.png);
// 全部通过请用 “/”
// dynamic.addMapping(/);
dynamic.setLoadOnStartup(1);
dynamic.setMultipartConfig(new MultipartConfigElement(null, MAX_FILE_UPLOAD_SIZE, MAX_REQUEST_SIZE, FILE_SIZE_THRESHOLD));
}
/**
* 通过自定义的配置类来实例化一个Web Application Context
*
* @param annotatedClasses
* @return
*/
private AnnotationConfigWebApplicationContext createWebContext(Class<!--?-->... annotatedClasses) {
AnnotationConfigWebApplicationContext webContext = new AnnotationConfigWebApplicationContext();
webContext.register(annotatedClasses);
return webContext;
}
}</code>
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