Request method 'POST' not supported. Spring Thymeleaf-CodePudding

**Hi everyone. I ran into a problem while developing a web application. The saveEmployee method does not work properly and throws the corresponding error. In the project I use Spring-boot Thymeleaf. I think there is an error in these two files or a problem in the configuration. But so far I haven't found anything. **

myRestController.java

    @Controller
@RequestMapping("/shop")
public class myRestController {

    @Autowired
    private EmployeeService employeeService;


    @GetMapping("/allEmployees")
    public String allEmployees(Model model) {
        List<Employee> employees = employeeService.getAllEmployees();
        model.addAttribute("employeesList", employees);
        return "allEmployees";
    }

    @GetMapping("/allEmployees/{name}")
    public String getEmployeeByName(@PathVariable String name, Model model) {
        List<Employee> employees = employeeService.findAllByName(name);
        model.addAttribute("employeesList", employees);
        return "allEmployees";
    }

    @GetMapping("/newEmployee")
    public String addEmployee(Model model) {
        Employee employee = new Employee();
        model.addAttribute("employee", employee);
        return "addNewEmployee";
    }

    @RequestMapping()
    public String saveEmployee(@ModelAttribute("employee") Employee employee){
        employeeService.saveEmployee(employee);
        return "index";
    }

addNewEmployee.html

 <!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>Add Employee</h1>

<form th:method="POST" th:action="@{shop/allEmployees}" th:object="${employee}">
    <label for="name">Enter name:</label>
    <input type="text" th:field="*{name}" id="name"/>
    <br/>
    <label for="surname">Enter surname:</label>
    <input type="text" th:field="*{surname}" id="surname"/>
    <br/>
    <label for="department">Enter department:</label>
    <input type="text" th:field="*{department}" id="department"/>
    <br/>
    <label for="salary">Enter salary:</label>
    <input type="text" th:field="*{salary}" id="salary"/>
    <br/>
    <input type="submit" value="Create!">
</form>

<br><br>
</body>
</html>

CodePudding user response：

In your myRestController.java, I am not seeing any @PostMapping defined. In addNewEmployee.html, it appears you are attempting to call shop/allEmployees with a POST rather than the GET method. If your intention is to pass a body or form to the shop/allEmployees endpoint, you may want to consider either changing your @GetMapping to a @PostMapping that accepts a @RequestBody or creating an entirely new @PostMapping that accepts a @RequestBody.