Spring MVC HiddenHttpMethodFilter() 不会调用标有@PatchMapping的方法

问题描述 投票：0回答：1

我只是在学习，一切都按照我正在观看的课程进行。但是，就我而言，服务器返回 HTTP 405 消息请求方法“POST”不支持。

问题：添加了“update”方法（一切都与@PostMapping注释一起工作）：

package ru.first.spring.app.controllers;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import ru.first.spring.app.dao.PersonDAO;
import ru.first.spring.app.models.Person;

import javax.servlet.http.HttpServletRequest;

@Controller
@RequestMapping("/people")
public class PeopleController {
    private final PersonDAO personDAO;

    public PeopleController(PersonDAO personDAO) {
        this.personDAO = personDAO;
    }

    @GetMapping()
    public String index(Model model) {
        model.addAttribute("people", personDAO.index());
        return "people/index";
    }

    @GetMapping("/{id}")
    public String show(@PathVariable int id, Model model) {
        model.addAttribute("person", personDAO.show(id));
        return "people/show";
    }

    @GetMapping("/new")
    public String newPerson(@ModelAttribute("person") Person person) {
        return "people/new";
    }

    @PostMapping()
    public String create(@ModelAttribute Person person) {
        personDAO.save(person);
        return "redirect:/people";
    }

    @GetMapping("/{id}/edit")
    public String edit(@PathVariable int id, Model model) {
        model.addAttribute("person", personDAO.show(id));
        return "people/edit";
    }

    @PatchMapping("/{id}")
    public String update(@ModelAttribute Person person, @PathVariable int id) {
        personDAO.update(id, person);
        return "redirect:/people";
    }

//    @PostMapping("/{id}")
//    public String update(@ModelAttribute Person person, @PathVariable int id) {
//        personDAO.update(id, person);
//        return "redirect:/people";
//    }

}

为了使其发挥作用，课程作者说要添加 HiddenHttpMethodFilter()：

package ru.first.spring.app.config;

import org.springframework.web.filter.HiddenHttpMethodFilter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;

public class MySpringMvcDispatcherServletInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return null;
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[] {SpringConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] {"/"};
    }

    @Override
    public void onStartup(ServletContext aServletContext) throws ServletException {
        super.onStartup(aServletContext);
        registerHiddenFieldFilter(aServletContext);
    }

    private void registerHiddenFieldFilter(ServletContext aContext) {
        aContext.addFilter("hiddenHttpMethodFilter",
                new HiddenHttpMethodFilter()).addMappingForUrlPatterns(null ,true, "/*");
    }
}

这是 edit.html，其中使用 thymeleaf 自动创建隐藏方法（在浏览器中检查 - 它有效）：

<!DOCTYPE html>
<html lang="en" xmlns:th="http://thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Update person</title>
</head>
<body>
<form th:method="PATCH" th:action="@{/people/{id}(id=${person.getId()})}" th:object="${person}">
    <label for="name">Enter name</label>
    <input th:field="*{name}" type="text" id="name">
    <br/>
    <input type="submit" value="Edit person">
</form>
</body>
</html>

鉴于一切都适用于 @PostMapping 注释，我从逻辑上假设它是 HiddenHttpMethodFilter，但由于某种原因不起作用。

我检查了代码是否有错误、拼写错误等（因为在此之前，当我在 th:action 中设置错误的路径时，服务器抛出了类似的错误）。我确保应用程序可以使用 @PostMapping 注释正常工作。

spring-mvc
1个回答
0
投票

通过用课程作者的 pom 替换你自己的，一切正常。 也许这是 spring. 版本，我想？不，只是通过更改版本我得到了同样的错误。 如果您更改版本并添加构建中缺少的所有内容？那也没用。只有完全替换我的pom.xml才解决问题

我的pom：

<?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 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>spring.mvc.first.app</groupId>
  <artifactId>firstSpringMVCApp</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>firstSpringMVCApp Maven Webapp</name>
  <url>http://maven.apache.org</url>

  <properties>
    <spring.version>5.3.20</spring.version>
  </properties>


  <dependencies>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring5 -->
    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf-spring5</artifactId>
      <version>3.0.11.RELEASE</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
      <scope>provided</scope>
    </dependency>
  </dependencies>

  <build>
    <finalName>firstSpringMVCApp</finalName>
  </build>

</project>

工作pom：

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>ru.alishev.springcourse</groupId>
  <artifactId>spring-crud-app3</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>spring-mvc-app1 Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>

    <spring.version>5.2.1.RELEASE</spring.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf-spring5</artifactId>
      <version>3.0.11.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
      <scope>provided</scope>
    </dependency>
  </dependencies>

  <build>
    <finalName>spring-mvc-app1</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
      <plugins>
          <plugin>
              <groupId>org.apache.maven.plugins</groupId>
              <artifactId>maven-compiler-plugin</artifactId>
              <configuration>
                  <source>8</source>
                  <target>8</target>
              </configuration>
          </plugin>
      </plugins>
  </build>
</project>

这很难称得上是问题的全面解决方案。我把它留在这里，如果你有类似的错误，也许编辑 pom 会对你有所帮助。

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