有没有办法知道 Spring 控制器将映射哪个完整 URL？

Question

我有一个 Spring 控制器，

@Controller
@RequestMapping(value = "/employee")
public class EmployeeController {

@Autowired
private EmployeeService employeeService;

/**
 * returns all the employees in the datastore.
 * 
 * @return list of all employees.
 */
@RequestMapping(method = RequestMethod.GET)
public @ResponseBody String getAllEmployees() {
    return convertObjectListToJSONArray(this.employeeService.listEmployees());
}

/**
 * adds an employee in the data-store.
 * 
 * @param employee
 *            employee to add in the data-store.
 * @return request status.
 */
@ResponseStatus(value = HttpStatus.CREATED)
@RequestMapping(method = RequestMethod.POST, consumes = "application/json", produces = "application/json")
public ResponseEntity<?> addEmployee(UriComponentsBuilder uriCBuilder, @RequestBody Employee employee) {
    Employee e = this.employeeService.getEmployeeById(employee.getId());
    if(null != e) {
        throw new EmployeeConflictException(); 
    }
    this.employeeService.addEmployee(employee);
    UriComponents uriComponents = uriCBuilder.path("/cmpe281Pratik021/rest/employee/{id}")
            .buildAndExpand(employee.getId());
    HttpHeaders headers = new HttpHeaders();
    headers.setLocation(uriComponents.toUri());
    return new ResponseEntity<Void>(headers, HttpStatus.CREATED);
}

但是，当我点击 http://localhost:8080/employee 时，它会给出错误 404。 有没有办法打印到这个 Spring 控制器将被映射的完整 url？

Answer 1

有没有办法打印到这个 Spring 控制器所在的完整 url 会被映射吗？

您可以启用以下日志记录属性：

log4j.category.org.springframework.web=INFO

现在，如果您重新启动 Tomcat（或任何服务器），那么在启动期间，当 Spring 容器初始化 DispactherServlet 和 HandlerMapping 时，它将打印所有识别的映射（来自各种 Controller 类）到日志中，以便您可以实际验证 Controller 类将提供哪些映射。

P.S.：此日志只是列出/记录所有控制器映射，这将有助于调试/解决问题