的实现类，加载Web的基本配置

代码下载：http://download.csdn.net/download/poiuy1991719/10128895

 

编写SpitterWebInitializer类：

package spittr.config;import javax.servlet.MultipartConfigElement;import javax.servlet.ServletRegistration.Dynamic;import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;public class SpitterWebInitializer extends        AbstractAnnotationConfigDispatcherServletInitializer {    @Override    protected Class
      [] getRootConfigClasses() {        return new Class
      [] { RootConfig.class };    }    @Override    protected Class
      [] getServletConfigClasses() {        return new Class
      [] { WebConfig.class };    }    @Override    protected String[] getServletMappings() {        return new String[] { "/" };    }    @Override    protected void customizeRegistration(Dynamic registration) {
    // 对DispatcherServlet进行额外配置        registration.setMultipartConfig(new MultipartConfigElement(                "/tmp/spittr/uploads", 2097152, 4194304, 0));    }}

 

编写Web配置类：

package spittr.config;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.ViewResolver;import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;import org.springframework.web.servlet.config.annotation.EnableWebMvc;import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;import org.springframework.web.servlet.view.InternalResourceViewResolver;/*** * 配置web */@Configuration //配置类，需要的注解@EnableWebMvc  //启用Spring MVC@ComponentScan("spittr.web")  //启用组件扫描，就会扫描到控制器public class WebConfig extends WebMvcConfigurerAdapter {    @Bean    public ViewResolver viewResolver() {
    //配置JSP视图解析器        InternalResourceViewResolver resolver = new InternalResourceViewResolver();        resolver.setPrefix("/WEB-INF/views/");//在请求路径前，加入资源路径        resolver.setSuffix(".jsp");//在请求路径后，加入资源名称，比如/WEB-INF/views/home.jsp        resolver.setViewClass(org.springframework.web.servlet.view.JstlView.class);        return resolver;    }    @Override    public void configureDefaultServletHandling(  //处理静态资源            DefaultServletHandlerConfigurer configurer) {        configurer.enable();    }    @Override    public void addResourceHandlers(ResourceHandlerRegistry registry) {        super.addResourceHandlers(registry);    }}

 

编写其他组件启动类：

package spittr.config;import java.util.regex.Pattern;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.ComponentScan.Filter;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.FilterType;import org.springframework.context.annotation.Import;import org.springframework.core.type.filter.RegexPatternTypeFilter;import spittr.config.RootConfig.WebPackage;@Configuration@Import(DataConfig.class)@ComponentScan(basePackages = { "spittr" }, excludeFilters = { @Filter(type = FilterType.CUSTOM, value = WebPackage.class) })public class RootConfig {    public static class WebPackage extends RegexPatternTypeFilter {        public WebPackage() {            super(Pattern.compile("spittr\\.web"));        }    }}

package spittr.config;import javax.sql.DataSource;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.jdbc.core.JdbcOperations;import org.springframework.jdbc.core.JdbcTemplate;import org.springframework.jdbc.datasource.DriverManagerDataSource;@Configurationpublic class DataConfig {    @Bean    public DataSource dataSource() {        DriverManagerDataSource dataSource = new DriverManagerDataSource();        dataSource.setDriverClassName("com.mysql.jdbc.Driver");        dataSource.setUrl("jdbc:mysql:///spittle");        dataSource.setUsername("root");        dataSource.setPassword("root");        return dataSource;    }    @Bean    public JdbcOperations jdbcTemplate(DataSource dataSource) {        return new JdbcTemplate(dataSource);    }}

 

基本工作完成，下面就开始进入正题：

一、添加另外的自定义Servlet：WebApplicationInitializer类的实现：仅仅完成基本的输出

package com.regist.servlet;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class MyServlet extends HttpServlet {    public MyServlet() {        super();    }    public void destroy() {        super.destroy();    }    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        response.setContentType("text/html");        PrintWriter out = response.getWriter();        out.println("");        out.println("");        out.println("  ");        out.println("  ");        out.print("    This is ");        out.print(this.getClass());        out.println(", using the GET method");        out.println("  ");        out.println("");        out.flush();        out.close();    }    public void doPost(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        response.setContentType("text/html");        PrintWriter out = response.getWriter();        out.println("");        out.println("");        out.println("  ");        out.println("  ");        out.print("    This is ");        out.print(this.getClass());        out.println(", using the POST method");        out.println("  ");        out.println("");        out.flush();        out.close();    }    public void init() throws ServletException {    }}

package com.regist.servlet.config;import javax.servlet.ServletRegistration.Dynamic;import javax.servlet.ServletContext;import javax.servlet.ServletException;import org.springframework.web.WebApplicationInitializer;import com.regist.servlet.MyServlet;/*** * 往容器中，注册其他的组件，只需实现WebApplicationInitializer接口即可 * 本方法，注册了一个Servlet */public class MyServletInitializer implements WebApplicationInitializer{    @Override    public void onStartup(ServletContext servletContext) throws ServletException {        System.out.println("-------------------------------------");        Dynamic myServlet = servletContext.addServlet("myServlet", MyServlet.class);//注册Servlet            myServlet.addMapping("/myServlet/*");//映射路径    }}

 

二、添加Filter拦截器：WebApplicationInitializer类的实现：

package com.regist.filter;import java.io.IOException;import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletContext;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.http.HttpServletRequest;public class MyFilter implements Filter {    // 来访数量    private int count;    @Override    public void destroy() {    }    @Override    public void doFilter(ServletRequest request, ServletResponse response,            FilterChain chain) throws IOException, ServletException {        System.out.println("------------过滤器执行");        chain.doFilter(request, response); // 向下传递过滤器    }    @Override    public void init(FilterConfig filterConfig) throws ServletException {    }}

package com.regist.filter.config;import javax.servlet.FilterRegistration.Dynamic;import javax.servlet.ServletContext;import javax.servlet.ServletException;import org.springframework.web.WebApplicationInitializer;import com.regist.filter.MyFilter;public class MyFilterInitializer implements WebApplicationInitializer{    @Override    public void onStartup(ServletContext servletContext) throws ServletException {        System.out.println("-----------------class:MyFilterInitializer-------------------");        Dynamic filter = servletContext.addFilter("myFilter", MyFilter.class);        filter.addMappingForUrlPatterns(null, false, "/myServlet/*");//映射路径    }}