Java Spring引导注释混乱
我正在基于在线MOOC中的分配创建一个spring boot应用程序。课程结束了,我正在自己尝试这项作业 这是我的pom.xml文件:Java Spring引导注释混乱,java,spring,maven,Java,Spring,Maven,我正在基于在线MOOC中的分配创建一个spring boot应用程序。课程结束了,我正在自己尝试这项作业 这是我的pom.xml文件: <modelVersion>4.0.0</modelVersion> <groupId>org.springframework.samples.service.service</groupId> <artifactId>VideoManagerServer</artifactId&
<modelVersion>4.0.0</modelVersion>
<groupId>org.springframework.samples.service.service</groupId>
<artifactId>VideoManagerServer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<!-- Generic properties -->
<java.version>1.6</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Web -->
<jsp.version>2.2</jsp.version>
<jstl.version>1.2</jstl.version>
<servlet.version>2.5</servlet.version>
<!-- Spring -->
<spring-framework.version>3.2.3.RELEASE</spring-framework.version>
<!-- Hibernate / JPA -->
<hibernate.version>4.2.1.Final</hibernate.version>
<!-- Logging -->
<logback.version>1.0.13</logback.version>
<slf4j.version>1.7.5</slf4j.version>
<!-- Test -->
<junit.version>4.11</junit.version>
</properties>
<dependencies>
<!-- Spring MVC -->
<!-- Other Web dependencies -->
<!-- Spring and Transactions -->
<!-- Logging with SLF4J & LogBack -->
<!-- Hibernate -->
<!-- Test Artifacts -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-framework.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.2.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
<version>1.2.5.RELEASE</version>
</dependency>
</dependencies>
4.0.0
org.springframework.samples.service.service
与本机构的视频:
{
“id”:1,
“标题”:“测试”,
“contentType”:“test1”,
“数据URL”:“测试URL”,
“主演”:“5”,
“持续时间”:7
}
我从邮递员那里收到了这样的信息:
{“时间戳”:1440349612613,
“状态”:405,
“错误”:“不允许使用方法”,
“异常”:“org.springframework.web.HttpRequestMethodNotSupportedException”,“消息”:“请求方法'POST'不受支持”,“路径”:/api/add”
}
在我的eclipse控制台中显示以下消息:
WARN PageNotFound-不支持请求方法“POST”
但是视频是add的,如果我对类或方法返回类型使用@ResponseBody,则可以毫无错误地检索视频。
因此,主要问题是:
如果addVideo没有返回任何内容,为什么我需要添加@ResponseBody。这里有两个问题:
为什么@RestController工作,而@Controller不工作
如果您检查,您将看到RestController是
一个方便的注释,它本身用@Controller注释
和@ResponseBody
如果返回类型为void,为什么需要添加@ResponseBody
这样做的原因是,即使没有要返回的实际值,也会向客户端发送响应(至少是HTTP OK)。因此,您需要使用以下其中一种:
@ResponseBody
@ResponseStatus(value=HttpStatus.OK)
请定义“工作”和“不工作”。你在做什么,你期望发生什么,以及会发生什么?我用邮递员发送了一个post请求来添加视频,但收到了一条错误消息。我正在编辑原始帖子以反映细节。谢谢
import java.util.ArrayList;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
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 org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.hakeem.videoserver.model.Video;
import com.hakeem.videoserver.service.VideoService;
@RestController
@RequestMapping(value="/api",consumes=MediaType.APPLICATION_JSON_VALUE,produces=MediaType.APPLICATION_JSON_VALUE)
public class VideoController {
@Autowired
VideoService videoService;
@RequestMapping(value="/add",method=RequestMethod.POST)
public void addVideo(@RequestBody Video video){
videoService.addVideo(video);
}
@RequestMapping(value="/all",method=RequestMethod.GET)
public @ResponseBody ArrayList<Video> getAllVideos(HttpServletResponse response){
ArrayList<Video> videos;
videos = videoService.getAllVideos();
if(videos.size() == 0){
response.setStatus(HttpStatus.NO_CONTENT.value());
}
return videos;
}
@RequestMapping(value="/delete",method=RequestMethod.DELETE)
public void deleteVideo(@RequestBody Video video){
videoService.deleteVideo(video);
}
@RequestMapping(value="/find/{id}")
public @ResponseBody Video findVideo(@PathVariable int id, HttpServletResponse response){
return videoService.findVideo(id);
}
@RequestMapping(value="/testing",method=RequestMethod.GET,produces=MediaType.APPLICATION_JSON_VALUE)
public @ResponseBody int testEndPoint(HttpServletResponse response){
return 10;
}
}