<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>

# Enable template caching.
spring.thymeleaf.cache=true
# Check that the templates location exists.
spring.thymeleaf.check-template-location=true
# Content-Type value.
spring.thymeleaf.servlet.content-type=text/html
# Enable MVC Thymeleaf view resolution.
spring.thymeleaf.enabled=true
# Template encoding.
spring.thymeleaf.encoding=UTF-8
# Comma-separated list of view names that should be excluded from resolution.
spring.thymeleaf.excluded-view-names=
# Template mode to be applied to templates. See also StandardTemplateModeHandlers.
spring.thymeleaf.mode=HTML
# Prefix that gets prepended to view names when building a URL.
spring.thymeleaf.prefix=classpath:/templates/
# Suffix that gets appended to view names when building a URL.
spring.thymeleaf.suffix=.html

package me.tianle.login.bean;

public class User {
    private String name;
    private String password;

    public User(String name, String password) {
        this.name = name;
        this.password = password;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

package me.tianle.login.controller;

import me.tianle.login.bean.User;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;

@RestController
public class LoginController {

    @RequestMapping("/")
    public ModelAndView index(ModelMap map) {
        map.addAttribute("host", "https://tianle.me");
        return new ModelAndView("index");
    }

    @RequestMapping(value = "/login", method = RequestMethod.POST)
    public String login(@ModelAttribute User user) {
        String name = user.getName();
        String password = user.getPassword();

        if (name.equals("qinya") && password.equals("tianle")) {
            return "Success";
        } else {
            return "Failed";
        }
    }
}

mvn install

java -jar xxx.jar