@Delete返回HTTP狀態405-不允許的方法

Question

嗨，我正在嘗試從數據庫中選擇一些實體，但是當我使用@Delete時，在瀏覽器中出現錯誤，但是Get正在工作。 我正在使用休眠JPA

這是我的代碼示例

@實體

package pl.test.model;

import javax.persistence.*;
import java.util.Collection;

@Entity
public class Mestechnologygroup {
    private Integer idTechnologyGroup;
    private String name;
    private String description;
    private Integer number;
    private Collection<Mestechnology> mestechnologiesByIdTechnologyGroup;

    @Id
    @Column(name = "idTechnologyGroup")
    public Integer getIdTechnologyGroup() {
        return idTechnologyGroup;
    }

    public void setIdTechnologyGroup(Integer idTechnologyGroup) {
        this.idTechnologyGroup = idTechnologyGroup;
    }

    @Basic
    @Column(name = "Name")
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Basic
    @Column(name = "Description")
    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    @Basic
    @Column(name = "Number")
    public Integer getNumber() {
        return number;
    }

    public void setNumber(Integer number) {
        this.number = number;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Mestechnologygroup that = (Mestechnologygroup) o;

        if (idTechnologyGroup != null ? !idTechnologyGroup.equals(that.idTechnologyGroup) : that.idTechnologyGroup != null)
            return false;
        if (name != null ? !name.equals(that.name) : that.name != null) return false;
        if (description != null ? !description.equals(that.description) : that.description != null) return false;
        if (number != null ? !number.equals(that.number) : that.number != null) return false;

        return true;
    }

    @Override
    public int hashCode() {
        int result = idTechnologyGroup != null ? idTechnologyGroup.hashCode() : 0;
        result = 31 * result + (name != null ? name.hashCode() : 0);
        result = 31 * result + (description != null ? description.hashCode() : 0);
        result = 31 * result + (number != null ? number.hashCode() : 0);
        return result;
    }

    @OneToMany(mappedBy = "mestechnologygroupByIdTechnologyGroup")
    public Collection<Mestechnology> getMestechnologiesByIdTechnologyGroup() {
        return mestechnologiesByIdTechnologyGroup;
    }

    public void setMestechnologiesByIdTechnologyGroup(Collection<Mestechnology> mestechnologiesByIdTechnologyGroup) {
        this.mestechnologiesByIdTechnologyGroup = mestechnologiesByIdTechnologyGroup;
    }
}

presistance.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0">

    <persistence-unit name="testPU" transaction-type="JTA">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <class>pl.test.model.Mesattachmentoperation</class>
        <class>pl.test.model.Mesattachmenttechnology</class>
        <class>pl.test.model.Mesoperation</class>
        <class>pl.test.model.Mesoperationdictionary</class>
        <class>pl.test.model.Mesoperationstate</class>
        <class>pl.test.model.Mesproduct</class>
        <class>pl.test.model.Mesproducttype</class>
        <class>pl.test.model.Mesproductxoperation</class>
        <class>pl.test.model.Mesresource</class>
        <class>pl.test.model.Mesresourcexoperation</class>
        <class>pl.test.model.Mestechnology</class>
        <class>pl.test.model.Mestechnologygroup</class>
        <class>pl.test.model.Mesusers</class>
        <properties>
            <property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
            <property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/mes"/>
            <property name="hibernate.connection.username" value="postgres"/>
            <property name="hibernate.connection.password" value="xxxx"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQL9Dialect"/>

        </properties>
    </persistence-unit>
</persistence>

方法庫

package pl.test.repo;

import com.sun.istack.internal.NotNull;
import pl.test.model.Mestechnologygroup;
import pl.test.model.Mesusers;


import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.TypedQuery;
import javax.transaction.Transactional;

import java.util.List;

import static javax.transaction.Transactional.TxType.REQUIRED;
import static javax.transaction.Transactional.TxType.SUPPORTS;

@Transactional(SUPPORTS)
public class TechnologyGroupRepo {

    EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("testPU");
    EntityManager em = entityManagerFactory.createEntityManager();

    public Mestechnologygroup find(@NotNull Integer id) {
        return em.find(Mestechnologygroup.class, id);
    }

    public List<Mestechnologygroup> findAll() {
        TypedQuery<Mestechnologygroup> query = em.createQuery("from Mestechnologygroup ", Mestechnologygroup.class);
        return query.getResultList();
    }

    @Transactional(REQUIRED)
    public void delete(@NotNull Integer id) {
        em.remove(em.getReference(Mestechnologygroup.class, id));
    }
}

在這里我使用@Delete

package pl.test.rest;


import pl.test.model.Mestechnologygroup;
import pl.test.repo.TechnologyGroupRepo;

import javax.inject.Inject;
import javax.validation.constraints.Min;
import javax.ws.rs.*;
import javax.ws.rs.core.Response;

import java.util.List;

import static javax.transaction.Transactional.TxType.REQUIRED;
import static javax.transaction.Transactional.TxType.SUPPORTS;
import static javax.ws.rs.core.MediaType.APPLICATION_JSON;
@Path("/tg")
public class TechnologyGroupEndpoint{

        @Inject
        private TechnologyGroupRepo technologyGroupRepo;

        @GET
        @Path("/{id : \\d+}")
        @Produces(APPLICATION_JSON)
        public Response getBook(@PathParam("id") @Min(1) Integer id) {
            Mestechnologygroup mestechnologygroup = technologyGroupRepo.find(id);

            if (mestechnologygroup == null)
                return Response.status(Response.Status.NOT_FOUND).build();

            return Response.ok(mestechnologygroup).build();
        }

        @DELETE
        @Path("/d/{id : \\d+}")
        public Response deleteBook(@PathParam("id") @Min(1) Integer id) {
            technologyGroupRepo.delete(id);
            return Response.noContent().build();
        }

        @GET
        @Produces(APPLICATION_JSON)
        public Response getBooks() {
            List<Mestechnologygroup> mestechnologygroups = technologyGroupRepo.findAll();

            if (mestechnologygroups.size() == 0)
                return Response.status(Response.Status.NO_CONTENT).build();

            return Response.ok(mestechnologygroups).build();
        }


}

我在Google chrome 響應中向該響應提出建議

我將不勝感激:)在此先感謝;）

Answer 1

您面臨的問題是因為始終通過GET http方法訪問瀏覽器URL。 您不能為其他http方法執行。

為了測試DELETE端點，您必須使用REST客戶端來執行此操作。

其余客戶端的一些示例：命令行： curl ， wget 。 使用GUI： Postman ， Insomnia 。

從命令行執行此操作的示例：

curl -X DELETE "http://localhost:8080/test-1.0-SNAPSHOT/resources/tg/d/22"

Answer 2

@刪除我在瀏覽器中遇到錯誤，但是Get正在工作。

當您在瀏覽器上點擊url時，它將作為GET請求。

您無法通過瀏覽器發出除GET之外的任何其他請求，因此GET可以工作。

嘗試使用http客戶端工具（如郵遞員等）或curl。