How to configure springboot to jump from http to https

SSL is a security protocol used to ensure the security and data integrity of network communications. It encrypts network connections at the network transport layer.

Example: cas's single sign-in uses SSL

1. Generation of security certificate

1. You can use the certificate generation tool that comes with jdk, which comes with jdk A certificate management tool called keytool can be used to implement signed certificates.

2. First configure the basic java environment, ctrl r input cmd, enter the java directory

3. Example: Generate a certificate with the alias tomcat. First use the command to enter the jdk bin here. The password is 123456

keytool -genkey -alias tomcat -keypass 123456 -keyalg RSA -keysize 1024 -validity 365 -keystore D:/keys/tomcat.keystore -storepass 123456

4. Get a tomcat.keystore file and put this file in the project directory

2. Configure SSL

1. Edit the file application.properties

package com.example;

import org.apache.catalina.Context;
import org.apache.catalina.connector.Connector;
import org.apache.tomcat.util.descriptor.web.SecurityCollection;
import org.apache.tomcat.util.descriptor.web.SecurityConstraint;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.embedded.EmbeddedServletContainerFactory;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
import org.springframework.context.annotation.Bean;

@SpringBootApplication
public class SpringBootHttpsApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootHttpsApplication.class, args);
    }
    @Bean
    public EmbeddedServletContainerFactory servletContainer() {
        TomcatEmbeddedServletContainerFactory tomcat = new TomcatEmbeddedServletContainerFactory() {
            @Override
            protected void postProcessContext(Context context) {
                SecurityConstraint constraint = new SecurityConstraint();
                constraint.setUserConstraint("CONFIDENTIAL");
                SecurityCollection collection = new SecurityCollection();
                collection.addPattern("/*");
                constraint.addCollection(collection);
                context.addConstraint(constraint);
            }
        };
        tomcat.addAdditionalTomcatConnectors(httpConnector());
        return tomcat;
    }

    @Bean
    public Connector httpConnector() {
        Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
        connector.setScheme("http");
        //Connector监听的http的端口号
        connector.setPort(8080);
        connector.setSecure(false);
        //监听到http的端口号后转向到的https的端口号
        connector.setRedirectPort(8443);
        return connector;
    }

}

3. Test usage

1. Check the startup information

2. Access address localhost :8080/AmazeUI-2.7.2/login.html I customized an html web page, which has been redirected to port 8443

3. It is displayed in the address bar of the browser Unsafe: Because this certificate is not trusted, traditional enterprises generally need to purchase this certificate

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