Spring Boot 405 POST方法不受支持? [英] Spring Boot 405 POST method not supported?

问题描述

Spring Boot MVC如何不支持POST方法?我正在尝试实现一个简单的post方法，该方法接受实体列表:这是我的代码

How could POST method not support by Spring Boot MVC ?! I am trying to implement a simple post method that accepts a list of entities : here is my code

@RestController(value="/backoffice/tags")
public class TagsController {

    @RequestMapping(value = "/add", method = RequestMethod.POST)
        public void add(@RequestBody List<Tag> keywords) {
            tagsService.add(keywords);
        }
}

按如下所示点击此URL:

Hitting this URL like this:

http://localhost:8090/backoffice/tags/add

请求正文:

[{"tagName":"qweqwe"},{"tagName":"zxczxczx"}]

我收到:

{
    "timestamp": 1441800482010,
    "status": 405,
    "error": "Method Not Allowed",
    "exception": "org.springframework.web.HttpRequestMethodNotSupportedException",
    "message": "Request method 'POST' not supported",
    "path": "/backoffice/tags/add"
} 

编辑:

调试Spring Web请求处理程序

Debugging Spring Web Request Handler

     public void handleRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            this.checkRequest(request); 

 protected final void checkRequest(HttpServletRequest request) throws ServletException {
        String method = request.getMethod();
        if(this.supportedMethods != null && !this.supportedMethods.contains(method)) {
            throw new HttpRequestMethodNotSupportedException(method, StringUtils.toStringArray(this.supportedMethods));
        } else if(this.requireSession && request.getSession(false) == null) {
            throw new HttpSessionRequiredException("Pre-existing session required but none found");
        }
    }

supportedMethods中仅有的两种方法是{GET,HEAD}

The only two methods in supportedMethods are {GET,HEAD}

推荐答案

RestController注释定义中存在错误.根据文档，它是:

You have an error in RestController annotation definition. According to the docs it is:

public @interface RestController {

public @interface RestController {

/** *该值可能表示对逻辑组件的建议 名称，*在自动检测到的情况下将转换为Spring bean 成分. * @返回建议的组件名称(如果有的话)* @since 4.0.1 */字符串value()默认为";

/** * The value may indicate a suggestion for a logical component name, * to be turned into a Spring bean in case of an autodetected component. * @return the suggested component name, if any * @since 4.0.1 */ String value() default "";

}

这表示您输入的值("/backoffice/tags")是控制器的名称，而不是其可用路径.

Which means the value you have entered ("/backoffice/tags") is NAME of the controller not the path under which it is available.

在控制器的类上添加@RequestMapping("/backoffice/tags")并从@RestController批注中删除值.

Add @RequestMapping("/backoffice/tags") on the controller's class and remove value from the @RestController annotation.

根据注释无法正常工作的完整示例-请尝试使用此代码-并从IDE本地运行.

Fully working example as per comment that it does not work - try to use this code please - and run locally from IDE.

build.gradle

buildscript {
    ext {
        springBootVersion = '1.2.5.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}") 
        classpath("io.spring.gradle:dependency-management-plugin:0.5.2.RELEASE")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'idea'
apply plugin: 'spring-boot' 
apply plugin: 'io.spring.dependency-management' 

jar {
    baseName = 'demo'
    version = '0.0.1-SNAPSHOT'
}
sourceCompatibility = 1.8
targetCompatibility = 1.8

repositories {
    mavenCentral()
}


dependencies {
    compile("org.springframework.boot:spring-boot-starter-web")
    testCompile("org.springframework.boot:spring-boot-starter-test") 
}


eclipse {
    classpath {
         containers.remove('org.eclipse.jdt.launching.JRE_CONTAINER')
         containers 'org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8'
    }
}

task wrapper(type: Wrapper) {
    gradleVersion = '2.3'
}

Tag.java

package demo;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;

public class Tag {

    private final String tagName;

    @JsonCreator
    public Tag(@JsonProperty("tagName") String tagName) {
        this.tagName = tagName;
    }

    public String getTagName() {
        return tagName;
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder("Tag{");
        sb.append("tagName='").append(tagName).append('\'');
        sb.append('}');
        return sb.toString();
    }
}

SampleController.java

package demo;

import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
@RequestMapping("/backoffice/tags")
public class SampleController {

    @RequestMapping(value = "/add", method = RequestMethod.POST)
    public void add(@RequestBody List<Tag> tags) {
        System.out.println(tags);
    }
}

DemoApplication.java

package demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
}

这篇关于Spring Boot 405 POST方法不受支持?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！