在此先感谢您,您好,我是 Spring Boot 的新手。我正面临着弹簧靴的问题。当我在邮递员中运行我的 URL 时,它显示以下错误。我也在下面上传了我的代码。我不知道我的代码有什么问题。
{
"timestamp": "2021-07-09T06:43:57.429+00:00",
"status": 404,
"error": "Not Found",
"path": "/todo"
}
控制器代码 这是我的控制器代码的代码。
package com.assignment.todo.Todo.Controller;
import com.assignment.todo.Todo.Repo.*;
import java.util.List;
import javax.validation.Valid;
import javax.validation.constraints.NotNull;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Lazy;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.assignment.todo.Todo.Model.*;
import com.assignment.todo.Todo.Repo.*;
@RestController
@RequestMapping(value="/todo")
public class TodoController {
@Autowired
private TodoRepo todoRepo;
@GetMapping
public List<TodoModel> findAll(){
return todoRepo.findAll();
}
@PostMapping
public TodoModel save(@Valid @NotNull @RequestBody TodoModel todoItem) {
return todoRepo.save(todoItem);
}
}
型号
我的模型类的代码 包 com.assignment.todo.Todo.Model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.validation.constraints.NotBlank;
import org.springframework.data.annotation.Id;
@Entity
public class TodoModel {
private Long id;
@NotBlank
private String title;
private boolean done;
public TodoModel() {
}
public TodoModel(long id, String title, boolean done) {
this.id=id;
this.title=title;
this.done=done;
}
@Id
@GeneratedValue
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public boolean isDone() {
return done;
}
public void setDone(boolean done) {
this.done = done;
}
}
回购 我的回购类的代码
package com.assignment.todo.Todo.Repo;
import com.assignment.todo.Todo.Model.*;
import org.springframework.data.jpa.repository.JpaRepository;
public interface TodoRepo extends JpaRepository<TodoModel, Long> {
}
主类
package com.assignment.todo.Todo;
import com.assignment.todo.Todo.Controller.*;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
import com.assignment.todo.Todo.Repo.*;
@SpringBootApplication(scanBasePackages = "TodoRepo.java")
public class TodoApplication {
public static void main(String[] args) {
SpringApplication.run(TodoApplication.class, args);
}
}
pom.xml 我的 pom.xml 文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.assignment.todo</groupId>
<artifactId>Todo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Todo</name>
<description>Assignment in Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-mongodb -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-mongodb</artifactId>
<version>3.1.4</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepositosry.com/artifact/org.springframework/spring-web -->
<!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.1.0.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.sun.istack/maven-istack-commons-plugin -->
<!-- https://mvnrepository.com/artifact/com.sun.istack/maven-istack-commons-plugin -->
<dependency>
<groupId>com.sun.istack</groupId>
<artifactId>maven-istack-commons-plugin</artifactId>
<version>2.11</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.0.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-jpa -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>2.5.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.persistence/javax.persistence-api -->
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>javax.persistence-api</artifactId>
<version>2.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
答案 0 :(得分:0)
您的映射存在问题。您没有指定映射路径,因此 findAll 和 save 将默认映射设置为空,然后控制器无法理解您调用的是哪个 API。添加以下内容并尝试。
@GetMapping(value="/findAll")
@PostMapping(value=/save")
答案 1 :(得分:0)
@RestController("/todo")// you can give any URL here
public class TodoController {
@Autowired
private TodoRepo todoRepo;
@GetMapping("/getAll")// you can give any URL here
public List<TodoModel> findAll(){
return todoRepo.findAll();
}
@PostMapping("/save")// you can give any URL here
public TodoModel save(@Valid @NotNull @RequestBody TodoModel todoItem) {
todoRepo.save(todoItem);
return todoItem;
}
}
你像这样给方法映射。您可以提供任何 URL 名称。这是您收到 404 错误的主要原因。