java 404-not-found-while-running-spring-boot-rest-api
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404-not-found-while-running-spring-boot-rest-api
提问by Adi
While running springboot restservice application got 404 error. I am using spring boot, jersey rest. I have tried GET requests http://localhost:8080/dunamesbut not able to resolve. Please help.
运行 springboot restservice 应用程序时出现 404 错误。我正在使用弹簧靴，球衣休息。我尝试过 GET 请求，http://localhost:8080/dunames但无法解决。请帮忙。
Model Class:
型号分类：
@Entity
@Table(name = "du")
public class duname {
private String duname;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private int id;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public duname()
{
}
public duname(String duname, int id)
{
this.duname=duname;
this.id=id;
}
public String getDuname() {
return duname;
}
public void setDuname(String duname) {
this.duname = duname;
}
}
Service Class:
服务等级：
public class duservice {
@Autowired
private durepo durepository;
public List<duname> getAlldu()
{
List<duname> dunames=new ArrayList<duname>();
durepository.findAll()
.forEach(dunames::add);
return dunames;
}
public void addDu(duname dunames)
{
durepository.save(dunames);
}
public duname getDu(int id)
{
return durepository.findOne(id);
}
public void deleteDu(int id)
{
durepository.delete(id);
}
public void updateDu(int id, duname dunames)
{
durepository.save(dunames);
}
}
Controller class:
控制器类：
@RestController
public class ducontroller {
@Autowired
private duservice duService;
private final Logger log=(java.util.logging.Logger) LoggerFactory.getLogger(ducontroller.class);
@RequestMapping("/dunames")
public List<duname> getAlldu()
{
log.info("Starting");
return duService.getAlldu();
}
@RequestMapping("/duname/{id}")
public duname getdu(@PathVariable int id)
{
return duService.getDu(id);
}
@RequestMapping(method=RequestMethod.POST,value="/dunames")
public void addDuname(@RequestBody duname dunames)
{
duService.addDu(dunames);
}
Repository:
存储库：
public interface durepo extends CrudRepository<duname,Integer> {
}
Main Class:
主要类：
@SpringBootApplication
public class DuaddApplication {
public static void main(String[] args) {
SpringApplication.run(DuaddApplication.class, args);
}
}
Pom File:
Pom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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.du</groupId>
<artifactId>duadd</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>duadd</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.8.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
Application Properties:
应用属性：
spring.datasource.url=jdbc:postgresql://localhost:2280/todo
spring.datasource.username=test
spring.datasource.password=test
spring.jpa.generate-ddl=true
server.port=8080
Some console output:
一些控制台输出：
2017-10-26 11:06:08.952 INFO 4552 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-10-26 11:06:08.975 INFO 4552 --- [ main] com.soprasteria.du.DuaddApplication : Started DuaddApplication in 7.096 seconds (JVM running for 7.633)
2017-10-26 11:06:32.779 INFO 4552 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2017-10-26 11:06:32.779 INFO 4552 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2017-10-26 11:06:32.800 INFO 4552 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 21 ms
回答by Adi
I got the solution. It was due to package visibility. Main class was not able to find package in which controller class is present. So, I added all classes under the same package. You can also place application class one level up.
我得到了解决方案。这是由于包可见性。主类无法找到控制器类所在的包。所以，我在同一个包下添加了所有类。您还可以将应用程序类上一级。
Got help from below link:
从以下链接获得帮助：
Spring Boot: Cannot access REST Controller on localhost (404)
