package com.example;
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.example.servlet.MyServlet;
@SpringBootApplication
public class SpringBootSimpleApplication {
/**
* 使用代码注册Servlet(不需要@ServletComponentScan注解)
*/
@Bean
public ServletRegistrationBean servletRegistrationBean() {
return new ServletRegistrationBean(new MyServlet(), "/st/*");// ServletName默认值为首字母小写,即myServlet
}
public static void main(String[] args) {
SpringApplication.run(SpringBootSimpleApplication.class, args);
}
}
package com.example.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{
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println(">>>>>>>>>>doGet()<<<<<<<<<<<");
doPost(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println(">>>>>>>>>>doPost()<<<<<<<<<<<");
resp.setContentType("text/html");
resp.setCharacterEncoding("utf-8");
PrintWriter out = resp.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>Hello World</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>大家好,我的名字叫Servlet</h1>");
out.println("</body>");
out.println("</html>");
}
}
package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import com.example.servlet.MyServlet;
@SpringBootApplication
@ServletComponentScan
public class SpringBootSimpleApplication {
/**
* 使用代码注册Servlet(不需要@ServletComponentScan注解)
*/
@Bean
public ServletRegistrationBean servletRegistrationBean() {
return new ServletRegistrationBean(new MyServlet(), "/st/*");// ServletName默认值为首字母小写,即myServlet
}
public static void main(String[] args) {
SpringApplication.run(SpringBootSimpleApplication.class, args);
}
}
package com.example.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
// 不指定name的情况下,name默认值为类全路径,即com.example.servlet.MyServlet2
@WebServlet(urlPatterns="/st/myservlet2", description="Servlet的说明")
public class Myservlet2 extends HttpServlet{
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println(">>>>>>>>>>doGet2()<<<<<<<<<<<");
doPost(req, resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println(">>>>>>>>>>doPost2()<<<<<<<<<<<");
resp.setContentType("text/html");
resp.setCharacterEncoding("utf-8");
PrintWriter out = resp.getWriter();
out.println("<html>");
out.println("<head>");
out.println("<title>Hello World</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>大家好,我的名字叫Servlet2</h1>");
out.println("</body>");
out.println("</html>");
}
}
/**
* 修改DispatcherServlet默认配置
*/
@Bean
public ServletRegistrationBean dispatcherRegistration(DispatcherServlet dispatcherServlet) {
ServletRegistrationBean registration = new ServletRegistrationBean(dispatcherServlet);
registration.getUrlMappings().clear();
registration.addUrlMappings("*.do");
registration.addUrlMappings("*.json");
return registration;
}
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