我想查看我的数据库 h2 中的数据。我不知道我错了什么 我在文件 .properties 中有此配置
spring.h2.console.enabled=true
spring.h2.console.path=/h2_console
spring.datasource.url=jdbc:h2:file:~/test
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driverClassName=org.h2.Driver
spring.jpa.show-sql=true
spring.jpa.generate-ddl=true
#spring.jpa.hibernate.ddl-auto=create
spring.jpa.hibernate.ddl-auto = update
#spring.jpa.hibernate.hbm2ddl.auto:validate
当我在 chrome 中发出请求时 http://localhost:8080/h2_console 我收到此错误:
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Fri May 10 00:37:28 BOT 2019
There was an unexpected error (type=Not Found, status=404).
No message available
这是我的 Controller :
package com.example.demo.controller;
import com.example.demo.model.Friendship;
import com.example.demo.model.User;
import com.example.demo.service.UserServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import java.util.List;
import java.util.logging.Logger;
@CrossOrigin(origins = "http://localhost:4200", maxAge = 3600)
@RestController
@RequestMapping({"/user"})
public class UserController {
@Autowired
UserServiceImpl userServiceImpl;
static Logger log = Logger.getLogger(UserController.class.getName());
@GetMapping(path = {"/"})
public Meet getBook() {
log.info("HELLO WORDL");
return null;
}
@PostMapping("/create")
public ResponseEntity<User> createUser(@RequestBody User user) {
log.info("CREATE");
return new ResponseEntity<User>(userServiceImpl.createUser(user), HttpStatus.OK);
}
@PostMapping("/addFriend")
public ResponseEntity<User> getUser(@RequestParam("owner") Long ownerId, @RequestParam("friend") Long friendId) {
return new ResponseEntity<User>(userServiceImpl.createLinkWithFriends(ownerId, friendId), HttpStatus.OK);
}
@GetMapping("/owner/{id}/friends")
public ResponseEntity<List<User>> getFriendsOf(@PathVariable("id") Long ownerId) {
return new ResponseEntity<List<User>>(userServiceImpl.getFriendsOf(ownerId), HttpStatus.OK);
}
@GetMapping("/getUsers")
public ResponseEntity<List<User>> getUsers() {
log.info("getUser");
return new ResponseEntity<>(userServiceImpl.getUsers(), HttpStatus.OK);
}
@GetMapping("/showFriends/{id}")
public ResponseEntity<List<User>> getUsers(@PathVariable("id") int id) {
log.info("showFriends"+id);
return new ResponseEntity<>(userServiceImpl.getUsers(), HttpStatus.OK);
}
}
当我使用此http://localhost:8080/user/时，我从 Controller 收到此消息
世界你好!
这是我的项目路径:
C:\Users\DELL\Desktop\txts\aquiesta\springTeam\traslateInClick\src\main\resources\application.properties
这是我的仓库 https://github.com/hubmanS/traslateInClick
这是我的依赖。
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.8.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.8.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
最佳答案
根据下面的代码，您的上下文路径看起来也是“”(空白)。
@RestController
@RequestMapping({"/"})
public class MeetController{
...
}
根据 Controller 类中的代码，问题仅在于您的 URL 映射。您的 URL /h2_console 与 getBook 方法的 /{id} URL 发生冲突。
@GetMapping(path = {"/{id}"})
public Meet getBook(@PathVariable("id") int id) {
return null;
}
我建议您为应用程序添加正确的上下文路径，以便您的应用程序 URL 不会与 h2-console URL 冲突。上述配置有时会运行，有时会失败。如果 h2 数据库上下文 URL 注册成功，您的控制台将打开，如果注册失败，您将看到现在出现的错误页面。
Recommended Solution :
application.properties (Commenting other h2 attributes as they are default)
spring.h2.console.enabled=true
#spring.h2.console.path=/h2_console
spring.datasource.url=jdbc:h2:file:~/test
#spring.datasource.username=sa
#spring.datasource.password=
#spring.datasource.driverClassName=org.h2.Driver
spring.jpa.show-sql=true
#spring.jpa.generate-ddl=true
#spring.jpa.hibernate.ddl-auto=create
spring.jpa.hibernate.ddl-auto = update
MeetController:
package com.example.demo.controller;
import com.example.demo.model.Meet;
import com.example.demo.service.MeetServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
@RestController
@RequestMapping({"/book"})
public class MeetController {
@Autowired
MeetServiceImpl bookService;
@RequestMapping("")
public String home(){
return "Hello World!";
}
@GetMapping(path = {"/{id}"})
public Meet getBook(@PathVariable("id") int id) {
return null;
}
@PostMapping("/create/{name}/author/{id}")
public ResponseEntity<Meet> createBook() {
return null;
}
}
因此您的最终网址将是:
获取本书:http://localhost:8080/book/ {id}/
创建一本书:http://localhost:8080//create/ {名称}/作者/{id}/
打电话回家:http://localhost:8080/book/
访问 h2 DB 控制台: http://localhost:8080/h2_console/login.jsp
关于java - 如何查看我的数据库H2的数据，为什么localhost :8080/h2_console not work?，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55978384/