[Spring Boot] 使用多个Servlet

当使用Spring boot的嵌入式servlet容器时,可以通过Spring bean或扫描Servlet组件的方式注册Servlet、Filter和Servlet规范的所有监听器(例如HttpSessionListener)

  • 当urlMapping不是很复杂时,可以通过ServletRegistrationBeanFilterRegistrationBean 和 ServletListenerRegistrationBean获得完整控制。如果bean实现了ServletContextInitializer接口的话则可以直接注册。
  • 当使用@ServletComponentScan扫描Servlet组件时,Servlet、过滤器和监听器可以是通过@WebServlet@WebFilter@WebListener自动注册

Application.java

package com.yqu.multiservlet;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.embedded.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.web.servlet.DispatcherServlet; @SpringBootApplication
public class Application { public static void main(String[] args) {
SpringApplication.run(Application.class, args);
} @Bean
public ServletRegistrationBean dispatcherRegistration(
DispatcherServlet dispatcherServlet) {
ServletRegistrationBean registration =
new ServletRegistrationBean(dispatcherServlet);
registration.addUrlMappings("/hirest/*");
printStacks();
return registration;
} @Bean
public ServletRegistrationBean servletRegistrationBean() {
printStacks();
return new ServletRegistrationBean(
new SigninServlet(), "/signin");
} private void printStacks() {
StackTraceElement[] elements = Thread.currentThread().getStackTrace();
System.out.println("========================"); for (int i = 0; i < elements.length; i++) {
System.out.println(elements[i]);
}
}
}

SigninServlet.java

package com.yqu.multiservlet;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException; public class SigninServlet extends HttpServlet {
public void init(ServletConfig config)
throws ServletException {
super.init(config); } protected void doGet(
HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.sendRedirect("http://blog.sina.com.cn/yandongqu");
}
}

HelloController.java

package com.yqu.multiservlet;

import org.springframework.hateoas.ResourceSupport;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController; import static org.springframework.hateoas.mvc.ControllerLinkBuilder.linkTo;
import static org.springframework.hateoas.mvc.ControllerLinkBuilder.methodOn; @RestController
public class HelloController {
@RequestMapping(value = "/", method = RequestMethod.GET)
@ResponseBody
public HttpEntity home() {
ResourceSupport home = new ResourceSupport();
home.add(linkTo(methodOn(HelloController.class).home()).withSelfRel());
return new ResponseEntity(home, HttpStatus.OK);
}
}

application.properties

server.context-path=/HelloMultiServlet
server.port=8080 applicationDefaultJvmArgs: [
"-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=55558"
]

build.gradle

buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.6.RELEASE")
}
} apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'spring-boot' jar {
baseName = 'hello-multiservlet'
version = '0.1.0'
} repositories {
mavenCentral()
} sourceCompatibility = 1.8
targetCompatibility = 1.8 dependencies {
compile("org.springframework.boot:spring-boot-starter-actuator")
compile("org.springframework.boot:spring-boot-starter-web")
compile("com.fasterxml.jackson.core:jackson-databind")
compile("org.springframework.hateoas:spring-hateoas")
compile("org.springframework.plugin:spring-plugin-core:1.1.0.RELEASE")
compile("com.jayway.jsonpath:json-path:0.9.1")
} task wrapper(type: Wrapper) {
gradleVersion = '2.3'
}

测试

  • 通过REST访问http://localhost:8080/HelloMultiServlet/hirest/

[Spring Boot] 使用多个Servlet

上一篇:cocos2d-x游戏开发 跑酷(九) 源代码下载及小结


下一篇:在ASP.MVC中使用Ajax