Java 带有Hibernate端点的Spring引导返回404

我是Spring Boot的新手，我正在学习本教程

我所做的就是下载这个jar并构建它，然后在localhost:8080上运行它

主文件My Application.java如下所示：

package netgloo;

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

@SpringBootApplication
public class Application {

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

}

package netgloo.controllers;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class MainController {

  @RequestMapping("/")
  @ResponseBody
  public String index() {
    return "Proudly handcrafted by " + 
        "<a href='http://netgloo.com/en'>netgloo</a> :)";
  }

}

package netgloo.controllers;

import netgloo.models.User;
import netgloo.models.UserDao;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping(value="/user")
public class UserController {

  @Autowired
  private UserDao _userDao;

  @RequestMapping(value="/delete")
  @ResponseBody
  public String delete(long id) {
    try {
      User user = new User(id);
      _userDao.delete(user);
    }
    catch(Exception ex) {
      return ex.getMessage();
    }
    return "User succesfully deleted!";
  }

  @RequestMapping(value="/get-by-email")
  @ResponseBody
  public String getByEmail(String email) {
    String userId;
    try {
      User user = _userDao.getByEmail(email);
      userId = String.valueOf(user.getId());
    }
    catch(Exception ex) {
      return "User not found";
    }
    return "The user id is: " + userId;
  }

  @RequestMapping(value="/save")
  @ResponseBody
  public String create(String email, String name) {
    try {
      User user = new User(email, name);
      _userDao.save(user);
    }
    catch(Exception ex) {
      return ex.getMessage();
    }
    return "User succesfully saved!";
  }

} // class UserController

我的主控制器如下：

package netgloo;

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

@SpringBootApplication
public class Application {

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

}

package netgloo.controllers;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class MainController {

  @RequestMapping("/")
  @ResponseBody
  public String index() {
    return "Proudly handcrafted by " + 
        "<a href='http://netgloo.com/en'>netgloo</a> :)";
  }

}

package netgloo.controllers;

import netgloo.models.User;
import netgloo.models.UserDao;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping(value="/user")
public class UserController {

  @Autowired
  private UserDao _userDao;

  @RequestMapping(value="/delete")
  @ResponseBody
  public String delete(long id) {
    try {
      User user = new User(id);
      _userDao.delete(user);
    }
    catch(Exception ex) {
      return ex.getMessage();
    }
    return "User succesfully deleted!";
  }

  @RequestMapping(value="/get-by-email")
  @ResponseBody
  public String getByEmail(String email) {
    String userId;
    try {
      User user = _userDao.getByEmail(email);
      userId = String.valueOf(user.getId());
    }
    catch(Exception ex) {
      return "User not found";
    }
    return "The user id is: " + userId;
  }

  @RequestMapping(value="/save")
  @ResponseBody
  public String create(String email, String name) {
    try {
      User user = new User(email, name);
      _userDao.save(user);
    }
    catch(Exception ex) {
      return ex.getMessage();
    }
    return "User succesfully saved!";
  }

} // class UserController

当我输入localhost:8080时，我看到在主控制器中定义的消息

当我在UserController中键入任何其他端点时，例如localhost:8080/user或localhost:8080/get by email？email=a@gmail.com它抛出一个404

---

请告知我在该代码中缺少什么

您尝试使用错误的URL

试试这些：

localhost:8080/user/save?email=a@gmail.com&name=a
localhost:8080/user/get-by-email?email=a@gmail.com

---

由于您正在类

UserController

上使用

@RequestMapping（“/user”）

注释，因此该类中的所有请求映射都以路径

“/user”

为前缀。有关更多信息，请参阅。

请向我们显示您正试图使用的url以及验证映射的相关代码，如您所说。我已添加了您所要求的@chieftwoils