Springboot--servlet 、filter

                                    springboot --servlet --filter    

 

package com.bjsxt.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;

/**
 *SpringBoot整合Filter 方式一
 *<filter>
 *    <filter-name>FirstFilter</filter-name>
 *    <filter-class>com.bjsxt.filter.FirstFilter</filter-class>
 *</filter>
 *<filter-mapping>
 *    <filter-name>FirstFilter</filter-name>
 *    <url-pattern>/first</url-pattern>
 *</filter-mapping>
 */
//@WebFilter(filterName="FirstFilter",urlPatterns={"*.do","*.jsp"})
@WebFilter(filterName="FirstFilter",urlPatterns="/first")
public class FirstFilter implements Filter {

    @Override
    public void destroy() {
        // TODO Auto-generated method stub

    }
    @Override
    public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
            throws IOException, ServletException {
        System.out.println("进入Filter");
        arg2.doFilter(arg0, arg1);
        System.out.println("离开Filter");
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {
        // TODO Auto-generated method stub
    }
}

FirstFilter

package com.bjsxt.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
/**
 * 
 *SpringBoot整合Filter 方式二
 *
 */
public class SecondFilter implements Filter {
    @Override
    public void destroy() {
        // TODO Auto-generated method stub
    }
    @Override
    public void doFilter(ServletRequest arg0, ServletResponse arg1, FilterChain arg2)
            throws IOException, ServletException {
        System.out.println("进入SecondFilter");
        arg2.doFilter(arg0, arg1);
        System.out.println("离开SecondFilter");
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {
        // TODO Auto-generated method stub
    }
}

SecondFilter

package com.bjsxt.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


/**
 *SpringBoot整合Servlet方式一
 *
 *<servlet>
 *    <servlet-name>FirstServlet</servlet-name>
 *    <servlet-class>com.bjsxt.servlet.FirstServlet</servlet-class>
 *</servlet>
 *
 *<servlet-mapping>
 * <servlet-name>FirstServlet</servlet-name>
 * <url-pattern>/first</url-pattern>
 *</servlet-mapping>
 *
 */

@WebServlet(name="FirstServlet",urlPatterns="/first")
public class FirstServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("FirstServlet............");
    }
}

FirstServlet

package com.bjsxt.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *SpringBoot整合Servlet方式二
 *
 */

public class SecondServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("SecondServlet..........");
    }
    
}

SecondServlet

package com.bjsxt;

import javax.servlet.annotation.WebServlet;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;

/**
 * SpringBoot整合Servlet方式一
 *
 *
 */
@SpringBootApplication
@ServletComponentScan //在springBoot启动时会扫描@WebServlet，并将该类实例化
public class App {

    public static void main(String[] args) {
        SpringApplication.run(App.class, args);
    }

}

App

package com.bjsxt;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;

import com.bjsxt.servlet.SecondServlet;

/**
 * SpringBoot整合Servlet方式二
 *
 *
 */
@SpringBootApplication
public class App2 {

    public static void main(String[] args) {
        SpringApplication.run(App2.class, args);
    }
    
    @Bean
    public ServletRegistrationBean getServletRegistrationBean(){
        ServletRegistrationBean bean = new ServletRegistrationBean(new SecondServlet());
        bean.addUrlMappings("/second");
        return bean;
    }
}

App2

<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>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.10.RELEASE</version>
  </parent>
  <groupId>com.bjsxt</groupId>
  <artifactId>02-spring-boot-servlet</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  
  <!-- jdk1.7 -->
  <properties>
      <java.version>1.7</java.version>
  </properties>
  
  <dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>
</project>

pom.xml