java - org.springframework.web.HttpRequestMethodNotSupportedException : Request method 'POST' is not supported

标签 java spring spring-boot thymeleaf

我正在开发我的 Java 的登录模块, Springboot , React和Thymeleaf应用程序，我遇到org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' is not supported当我提交 HTML 登录表单时。不知道如何继续。我看过类似的帖子，但它并没有帮助我解决问题。

项目结构

Project Structure

login.html

<!--<div th:if="${param.error}">Invalid username and/or password.</div>-->
<form action="#" th:action="@{/validateLogin}" method="post" th:object="${userInfo}" class="row g-4">
   <div class="col-12">
      <label>Username<span class="text-danger">*</span></label>
      <div class="input-group">
         <div class="input-group-text"><i class="bi bi-person-fill"></i></div>
         <label>
         <input type="text" class="form-control" placeholder="Enter Username" th:field="*{username}">
         </label>
      </div>
   </div>
   <div class="col-12">
      <label>Password<span class="text-danger">*</span></label>
      <div class="input-group">
         <div class="input-group-text"><i class="bi bi-lock-fill"></i></div>
         <label>
         <input type="text" class="form-control" placeholder="Enter Password" th:field="*{password}">
         </label>
      </div>
   </div>
   <div class="col-sm-6">
      <div class="form-check">
         <input class="form-check-input" type="checkbox" id="inlineFormCheck">
         <label class="form-check-label" for="inlineFormCheck">Remember me</label>
      </div>
   </div>
   <div class="col-sm-6">
      <a href="#" class="float-end text-primary">Forgot Password?</a>
   </div>
   <div class="col-12">
      <button type="submit" class="btn btn-primary px-4 float-end mt-4">login</button>
   </div>
</form>

身份验证 Controller 

import in.sandeep.campusconvene.model.Users;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

@Controller
public class AuthenticationController {

    @RequestMapping(path = "/validateLogin", method = RequestMethod.POST)
    public String validateLogin(@ModelAttribute Users userInfo){
        return userInfo.getUsername ();
    }
}

异常堆栈跟踪

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Fri Oct 13 09:15:25 IST 2023
There was an unexpected error (type=Method Not Allowed, status=405).
Method 'POST' is not supported.
org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' is not supported
    at org.springframework.web.servlet.support.WebContentGenerator.checkRequest(WebContentGenerator.java:381)
    at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:164)
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:51)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1081)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:974)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1011)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914)
    at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:590)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)
    at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:341)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:391)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:894)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1740)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.base/java.lang.Thread.run(Thread.java:833)

我期待检索 username和password来自login.html并对用户进行身份验证并将其路由到适当的登陆页面。

编辑1:

我已更新代码如下，删除了 AuthenticationController类并创建了一个 RoutingController实现 org.springframework.boot.web.servlet.error.ErrorController 的类和org.springframework.web.servlet.config.annotation.WebMvcConfigurer .

import in.sandeep.campusconvene.model.Users;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@RestController
public class RoutingController implements ErrorController, WebMvcConfigurer {

    private static final String MAIN_APPLICATION_PATH = "/";
    private static final String LOGIN_VALIDATOR_PATH = "/validateLogin";
    private static final String ERROR_PATH = "/error";

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController(MAIN_APPLICATION_PATH)
                .setViewName("forward:/login.html");
        registry.setOrder(Ordered.HIGHEST_PRECEDENCE);
    }

    @RequestMapping(value = ERROR_PATH)
    public String handleError(HttpServletRequest request) {
        Integer statusCode = (Integer) request.getAttribute("javax.servlet.error.status_code");
        Exception exception = (Exception) request.getAttribute("javax.servlet.error.exception");
        return String.format("<html><body><h2>Error Page</h2><div>Status code: <b>%s</b></div>" +
                        "<div>Exception Message: <b>%s</b></div><body></html>",
                statusCode, exception == null ? "N/A" : exception.getMessage());
    }

    @RequestMapping(value = LOGIN_VALIDATOR_PATH, method = RequestMethod.POST)
    @ResponseStatus(value= HttpStatus.OK)
    public String validateLogin(@RequestBody Users users, Model model){
        System.out.println ("INSIDE validateLogin.....");
        return "LET'S AUTHENTICATE";
    }
}

现在，当我尝试提交表单时，这就是我分别在浏览器和控制台上遇到的情况。它甚至没有达到validateLogin方法。

需要有关如何排序的帮助。

Error Page 

2023-10-14T12:17:15.890+05:30 DEBUG 10130 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : POST "/", parameters={masked}
2023-10-14T12:17:15.891+05:30 DEBUG 10130 --- [nio-8080-exec-3] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ParameterizableViewController [view="forward:/login.html"]
2023-10-14T12:17:15.901+05:30  WARN 10130 --- [nio-8080-exec-3] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' is not supported]
2023-10-14T12:17:15.901+05:30 DEBUG 10130 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Completed 405 METHOD_NOT_ALLOWED
2023-10-14T12:17:15.902+05:30 DEBUG 10130 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : "ERROR" dispatch for POST "/error", parameters={masked}
2023-10-14T12:17:15.904+05:30 DEBUG 10130 --- [nio-8080-exec-3] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to in.sandeep.campusconvene.controller.RoutingController#handleError(HttpServletRequest)
2023-10-14T12:17:15.927+05:30 DEBUG 10130 --- [nio-8080-exec-3] m.m.a.RequestResponseBodyMethodProcessor : Using 'text/html', given [text/html, application/xhtml+xml, image/avif, image/webp, image/apng, application/xml;q=0.9, */*;q=0.8, application/signed-exchange;v=b3;q=0.7] and supported [text/plain, */*, application/json, application/*+json]
2023-10-14T12:17:15.928+05:30 DEBUG 10130 --- [nio-8080-exec-3] m.m.a.RequestResponseBodyMethodProcessor : Writing ["<html><body><h2>Error Page</h2><div>Status code: <b>null</b></div><div>Exception Message: <b>N/A</b> (truncated)..."]
2023-10-14T12:17:15.930+05:30 DEBUG 10130 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Exiting from "ERROR" dispatch, status 405

编辑2:

当前版本为validateLogin方法

@RequestMapping(value = LOGIN_VALIDATOR_PATH, method = RequestMethod.POST)
@ResponseStatus(value = HttpStatus.OK)
public String validateLogin(HttpServletRequest request) {
  String username = request.getParameter("username");
  String password = request.getParameter("password");
  return username + password;
}

我现在在 API 测试器以及控制台上收到了预期的响应，如下所示

2023-10-14T23:24:50.091+05:30 DEBUG 7663 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : POST "/validateLogin", parameters={masked}
2023-10-14T23:24:50.091+05:30 DEBUG 7663 --- [nio-8080-exec-3] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to in.sandeep.campusconvene.controller.RoutingController#validateLogin(HttpServletRequest)
2023-10-14T23:24:50.093+05:30 DEBUG 7663 --- [nio-8080-exec-3] m.m.a.RequestResponseBodyMethodProcessor : Using 'text/plain', given [*/*] and supported [text/plain, */*, application/json, application/*+json]
2023-10-14T23:24:50.093+05:30 DEBUG 7663 --- [nio-8080-exec-3] m.m.a.RequestResponseBodyMethodProcessor : Writing ["user1 foo"]
2023-10-14T23:24:50.094+05:30 DEBUG 7663 --- [nio-8080-exec-3] o.s.web.servlet.DispatcherServlet        : Completed 200 OK

API Tester

但是当我尝试通过浏览器提交表单时，我仍然遇到 405 METHOD_NOT_ALLOWED 

2023-10-14T23:28:30.723+05:30 DEBUG 7663 --- [io-8080-exec-10] o.s.web.servlet.DispatcherServlet        : POST "/", parameters={masked}
2023-10-14T23:28:30.724+05:30 DEBUG 7663 --- [io-8080-exec-10] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped to ParameterizableViewController [view="forward:/login.html"]
2023-10-14T23:28:30.724+05:30  WARN 7663 --- [io-8080-exec-10] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' is not supported]
2023-10-14T23:28:30.724+05:30 DEBUG 7663 --- [io-8080-exec-10] o.s.web.servlet.DispatcherServlet        : Completed 405 METHOD_NOT_ALLOWED
2023-10-14T23:28:30.725+05:30 DEBUG 7663 --- [io-8080-exec-10] o.s.web.servlet.DispatcherServlet        : "ERROR" dispatch for POST "/error", parameters={masked}
2023-10-14T23:28:30.725+05:30 DEBUG 7663 --- [io-8080-exec-10] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to in.sandeep.campusconvene.controller.RoutingController#handleError(HttpServletRequest)
2023-10-14T23:28:30.727+05:30 DEBUG 7663 --- [io-8080-exec-10] m.m.a.RequestResponseBodyMethodProcessor : Using 'text/html', given [text/html, application/xhtml+xml, image/avif, image/webp, image/apng, application/xml;q=0.9, */*;q=0.8, application/signed-exchange;v=b3;q=0.7] and supported [text/plain, */*, application/json, application/*+json]
2023-10-14T23:28:30.728+05:30 DEBUG 7663 --- [io-8080-exec-10] m.m.a.RequestResponseBodyMethodProcessor : Writing ["<html><body><h2>Error Page</h2><div>Status code: <b>null</b></div><div>Exception Message: <b>N/A</b> (truncated)..."]
2023-10-14T23:28:30.729+05:30 DEBUG 7663 --- [io-8080-exec-10] o.s.web.servlet.DispatcherServlet        : Exiting from "ERROR" dispatch, status 405

最佳答案

我发现了这个问题。我看到了多个问题。

不要直接访问logic.html，将其保留在 /static 中。那样的话是行不通的。

注意: 默认情况下，Thymeleaf 检查 .html文件在 /templates仅目录。

首先，您的 logic.html 应该位于 /templates 中目录而不是 /static 中目录。

另一方面，您试图告诉 thymeleaf 您将在对象 userInfo 中填充/绑定(bind)值在 logic.html 中，但是你从哪里得到这个对象的。您没有创建该对象并将其传递到任何地方。

因此，您需要创建 Users ( userInfo ) 对象并将其从 Controller 传递到该页面。

项目结构:

enter image description here

pom.xml:

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.1.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo-thymleaf</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo-thymleaf</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </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>
        </plugins>
    </build>

</project>

我已经修复了您的login.html:

<!--<div th:if="${param.error}">Invalid username and/or password.</div>-->
<form th:action="@{/validateLogin}" method="post" th:object="${userInfo}" class="row g-4">
   <div class="col-12">
      <label>Username<span class="text-danger">*</span></label>
      <div class="input-group">
         <div class="input-group-text"><i class="bi bi-person-fill"></i></div>
         <label>
         <input type="text" class="form-control" placeholder="Enter Username" th:field="*{username}">
         </label>
      </div>
   </div>
   <div class="col-12">
      <label>Password<span class="text-danger">*</span></label>
      <div class="input-group">
         <div class="input-group-text"><i class="bi bi-lock-fill"></i></div>
         <label>
         <input type="text" class="form-control" placeholder="Enter Password" th:field="*{password}">
         </label>
      </div>
   </div>
   <div class="col-sm-6">
      <div class="form-check">
         <input class="form-check-input" type="checkbox" id="inlineFormCheck">
         <label class="form-check-label" for="inlineFormCheck">Remember me</label>
      </div>
   </div>
   <div class="col-sm-6">
      <a href="#" class="float-end text-primary">Forgot Password?</a>
   </div>
   <div class="col-12">
      <button type="submit" class="btn btn-primary px-4 float-end mt-4">login</button>
   </div>
</form>

删除不必要的action=#来自<form>标签。

我根据您提供的测试信息准备了一个 Users 类。

public class Users {
    
    private String username;
    private String password;

    // constructor, getter and setters
}

显示/validateLogin的成功，我也创建了一个success.html。

<body>
    <p>User Name: <strong th:text="${userInfo.username}"></strong></p>
    <p>Password: <strong th:text="${userInfo.password}"></strong></p>
</body>

将 Controller 更新为如下所示:

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class AuthenticationController {
    
    @GetMapping("login-page")
    public ModelAndView loginPage(){
        ModelAndView view = new ModelAndView();
        view.setViewName("login");
        view.addObject("userInfo", new Users());
        return view;
    }

    @PostMapping("validateLogin")
    public ModelAndView validateLogin(@ModelAttribute Users userInfo){
       ModelAndView view = new ModelAndView();
       view.setViewName("success");
       view.addObject("userInfo", userInfo);
       return view;
    }
}

注意:您必须创建并传递 Users没有数据的模型对象/bean 通过 ModelAndView到相应的login.html在解析/打开页面之前通过 thymeleaf 文件。

基本上，它期望您通过th:object使用的bean名称有一个普通的目标模型对象/bean。在请求属性中。

By definition, the th:object attribute is used for binding the fields of the form to a model object.

简而言之， thymeleaf 不知道从哪里来 userInfo将会出现，因为当您声明 th:object="${userInfo}" 时，不存在具有该名称的模型 bean/对象。 .

当您从登录页面传递字段值时，th:object试图在 spring 容器中查找具有绑定(bind)值名称的 bean，但找不到，因为您没有传递任何内容。

因此，这就是您收到此错误的原因(您可能没有看到该错误)。

Caused by: java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'userInfo' available as request attribute

要解决此问题，您必须首先提供一个 bean。仅此而已，我可以解释。

输出:

http://localhost:8080/login-page

enter image description here

单击“提交”按钮。它将调用http://localhost:8080/validateLogin

enter image description here

这会起作用。

您无需触摸application.properties对于 thymeleaf ，除非你想覆盖默认行为。

更新:

通过查看您的 Controller 代码 here ，这需要完全修正:

将 Controller 代码更改为:

import in.sandeep.campusconvene.model.Users;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.boot.web.servlet.error.ErrorController;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;

import java.io.IOException;

/**
 * The type RoutingController.
 *
 * @author sandeep
 * @version 1.0
 */
@RestController
public class RoutingController implements ErrorController {

    private static final String MAIN_APPLICATION_PATH = "/";
    private static final String LOGIN_VALIDATOR_PATH = "/validateLogin";
    private static final String ERROR_PATH = "/error";

    private ModelAndView modelAndView = new ModelAndView();

    /**
     * Gets Login Page.
     *
     * @return the Login Page
     */
    @RequestMapping(value = MAIN_APPLICATION_PATH, method = RequestMethod.GET)
    public ModelAndView getLoginPage() {
        modelAndView.setViewName("login");
        modelAndView.addObject("userInfo", new Users());
        return modelAndView;
    }

    /**
     * Handle Any Errors
     *
     * @return the Error Page
     */
    @RequestMapping(value = ERROR_PATH)
    public ModelAndView handleError() {
        modelAndView.setViewName("error_page");
        return modelAndView;
    }

    /**
     * Validate Login.
     *
     * @param request the request
     * @return the Home Page, if login is successful, else redirect to Login Page
     */
    @RequestMapping(value = LOGIN_VALIDATOR_PATH, method = RequestMethod.POST)
    @ResponseStatus(value= HttpStatus.OK)
    public ModelAndView validateLogin(@ModelAttribute Users userInfo){
        modelAndView.setViewName("welcomePage"); // REDIRECT TO USER HOME.
        modelAndView.addObject ("userInfo",userInfo);
        System.out.println ("ENTERED USERNAME => " + userInfo.getUsername ());
        System.out.println ("ENTERED PASSWORD => " + userInfo.getPassword ());
        return modelAndView;
    }
}

修复:

  • 我已删除所有 .html来自所有人的消息 setViewName使用的方法。仅使用 modelAndView.setViewName() 中的 html 文件的名称。例如:如果你想显示index.html，那么输入modelAndView.setViewName("index");

  • 设置modelAndView.addObject("userInfo", new Users())在 /获取端点；

注意:也请创建error_page.html。您的应用程序显示错误，表明它丢失了。

屏幕截图:

欢迎返回页面:

enter image description here

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enter image description here

关于java - org.springframework.web.HttpRequestMethodNotSupportedException : Request method 'POST' is not supported，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/77285015/

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