如何将设置Spring的主要方法移动到基本包中而不破坏它

Question

我正在查看Spring，我印象非常深刻。发展很快。我有一个应用程序，但是，所有的例子都有控制器包中的主要方法。例如com.demo我想把控制器移到它自己的包里。例如com.demo.controller。然后将主方法留在基本包com.demo中。当我这样做的时候，它会打破这个世界。似乎有些注释需要分离，或者方便的方法可能需要分解。正如我所说的那样，我已经将我的Application.java移到了一个基本包中，并且移动了我认为正确的注释，但是我似乎遗漏了一些东西。这是我的密码。

package com.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import com.demo.controllers.StudentController;

@SpringBootApplication
@EnableAutoConfiguration
public class Application {

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

我的控制器如下

package com.demo.controllers;

import java.util.ArrayList;
import java.util.List;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import com.demo.models.Student;

@Controller
@RequestMapping("/student")
public class StudentController {

    @RequestMapping(method = RequestMethod.GET)
    public List<Student> getAll() {
        return new ArrayList<Student>();
    }

    @RequestMapping(method = RequestMethod.POST)
    public Student create(@RequestBody Student Student) {
        return null;
    }

    @RequestMapping(method = RequestMethod.DELETE, value = "{id}")
    public void delete(@PathVariable String id) {

    }

    @RequestMapping(method = RequestMethod.PUT, value = "{id}")
    public Student update(@PathVariable String id, @RequestBody Student Student) {
        return null;
    }
}

我得到的堆栈追踪就是这个。

org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:133) ~[spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) ~[spring-context-4.2.6.RELEASE.jar:4.2.6.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1191) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1180) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at com.demo.Application.main(Application.java:14) [classes/:na]
Caused by: org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.getEmbeddedServletContainerFactory(EmbeddedWebApplicationContext.java:185) ~[spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:158) ~[spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:130) ~[spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE]
... 8 common frames omitted

不确定我是缺少了注释，还是需要拆分一些方便的注释。

Answer 1

这不是SpringApplication.run(StudentController.class, args);，而是SpringApplication.run(Application.class, args);。

请小心地遵循指南。

Answer 2

在主类中，它不是调用控制器类，而是调用应用程序类，而是解决了这个问题。

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

@AutoConfiguration不是必要的，因为@SpringBootApplication内部包含

Answer 3

您的应用程序类必须如下所示：

package com.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import com.demo.controllers.StudentController;

@SpringBootApplication
@EnableAutoConfiguration
public class Application {

    @Override
    protected SpringApplicationBuilder configure(
             SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }

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