我刚刚开始学习用于REST API开发的Java Spring Boot。使用下面的代码,GET方法可以正常工作,但POST无法正常工作。
@RestController @RequestMapping("/api/users") public class UsersController { @Autowired private UserRepository userRepository; @RequestMapping(method = RequestMethod.GET) public List<User> getAll() { return userRepository.findAll(); } @RequestMapping(method = RequestMethod.POST) public String saveUser() { return "Saved"; } }
在Postman应用程序中使用Content-Typeas 测试了POST方法application/json
Content-Type
application/json
错误,
{ "timestamp": 1497116929266, "status": 405, "error": "Method Not Allowed", "exception": "org.springframework.web.HttpRequestMethodNotSupportedException", "message": "Request method 'POST' not supported", "path": "/api/users/" }
在日志中,我可以看到,
s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/api/users],methods=[POST]}" onto public java.lang.String com.betasquirrel.controller.UsersController.saveUser() s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/api/users],methods=[GET]}" onto public java.util.List<com.betasquirrel.model.User> com.betasquirrel.controller.UsersController.getAll() s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest) s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
适用于Maven的Java和springboot版本,
<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.4.RELEASE</version> <relativePath/> </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>
最后,通过使用maven命令运行项目来解决该问题。
而不是使用IDE的运行按钮运行项目,而是转到IDE中的终端并执行命令
mvn spring-boot:run
由于它是一个REST实现,因此我现在可以访问它们,
REST
GET /api/users/ or /api/users POST /api/users/ or /api/users
像魅力一样工作!