java - 当我尝试使用 JSON 数据时，POST 到 Jersey REST 服务时出现错误 415 不支持的媒体类型

Question

我正在使用带有 Jersey 和 Tomcat 的 JAX-RS Web 应用程序。 Post 请求很好，但是当我尝试使用 JSON 数据时，我收到 HTTP 状态 415 - 不支持的媒体类型。

这是我的代码:

package com.sms.presentationT;
import java.io.Serializable;
import javax.ws.rs.Consumes;
import javax.ws.rs.FormParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.json.simple.JSONObject;
import org.json.simple.parser.ParseException;
import com.sms.userServices.*;
import com.sms.Registrations.Regitration;
import com.sms.persistenceT.*;
import com.sms.persistenceT.*;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

@Path("/user-servicesLogincheck1")
public class Check implements Serializable{

    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    @POST
    @Path("/LoginPagecheck1")
    //@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    @Consumes(MediaType.APPLICATION_JSON)
    //@Produces("application/json")
    @Produces(MediaType.APPLICATION_JSON)
    public Regitration loginUserInfo(@FormParam("logusertype") String logUserType, @FormParam("userNAME") String UserNAME,*emphasized text* @FormParam("PassWORD") String PAssWORD) throws ParseException
    {

        System.out.println(logUserType+UserNAME+PAssWORD);

        LoginUserServiceCheck LUS = new LoginUserServiceCheck();
        JSONObject jobj2 = new JSONObject();
        jobj2 = LUS.LoginInputDatacheck(logUserType,UserNAME, PAssWORD);

        System.out.println("ssssssssssssssssssssssssssss");

        System.out.println("Presentation jobj"+jobj2);


        String jsonText = jobj2.toJSONString();
        System.out.println(jsonText);

        JSONParser parser = new JSONParser();

        JSONObject newJObject = null;

        try {
            newJObject = (JSONObject) parser.parse(jsonText);
        } catch (ParseException e) {
            e.printStackTrace();
        }

        //System.out.println(LUS.loginresponse);
        //System.out.println(LUS.resultStatus);
        /*
        if(LUS.resultStatus)
        { 
            System.out.println(LUS.loginresponse);


            return LUS.loginresponse;
            //return "UserName is valid";
        }
        else
        {
            return LUS.loginresponse;
        }

        */

        System.out.println(newJObject.get("Name"));
        System.out.println(newJObject.get("Email"));

        Regitration rg = new Regitration();

        rg.setUserType(logUserType);
        rg.setName((String)newJObject.get("Name"));
        rg.setEmail((String)newJObject.get("Email"));
        rg.setUserName((String)newJObject.get("userName"));
        rg.setPassword((String)newJObject.get("password"));
        rg.setConfirmPasssword((String)newJObject.get("password"));
        rg.setBirthDay((String)newJObject.get("birthday"));
        rg.setGender((String)newJObject.get("Gender"));
        rg.setMobileNo((String)newJObject.get("mobileNo"));
        rg.setCurrentAddress((String)newJObject.get("currentAddress"));

        rg.setPermenantAddress((String)newJObject.get("PermenantAddress"));
        rg.setCountry((String)newJObject.get("Country"));
        rg.setState((String)newJObject.get("state"));
        rg.setCity((String)newJObject.get("City"));

        rg.setLandmark((String)newJObject.get("Landmark"));
        rg.setZipCode((String)newJObject.get("ZipCode"));
        return rg;
    }

}

这是我的 web.xml 文件

<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Restful Web Application</display-name>

<servlet>
    <servlet-name>jersey-serlvet</servlet-name>
    <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
    <init-param>
        <param-name>com.sun.jersey.config.property.packages</param-name>
        <param-value>com.sms.presentationT</param-value>
    </init-param>

    <init-param>
        <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
         <param-value>true</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>jersey-serlvet</servlet-name>
    <url-pattern>/pages/rest/*</url-pattern>
</servlet-mapping>

这是我的 POM.xml 文件

<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>com.mkyong.common</groupId>
<artifactId>RESTfulExample</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>RESTfulExample Maven Webapp</name>
<url>http://maven.apache.org</url>

<repositories>
    <repository>
        <id>maven2-repository.java.net</id>
        <name>Java.net Repository for Maven</name>
        <url>http://download.java.net/maven/2/</url>
        <layout>default</layout>
    </repository>
</repositories>

<dependencies>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.8.2</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-server</artifactId>
        <version>1.8</version>
    </dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.40</version>
</dependency>
<dependency>
    <groupId>com.sun.jersey.contribs</groupId>
    <artifactId>jersey-multipart</artifactId>
    <version>1.8</version>
</dependency>   
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>

<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-json</artifactId>
    <version>1.18</version>
</dependency>

 <dependency>
        <groupId>org.json</groupId>
        <artifactId>json</artifactId>
        <version>20141113</version>
    </dependency>

    <dependency>
        <groupId>org.glassfish</groupId>
        <artifactId>javax.json</artifactId>
        <version>1.0.4</version>
    </dependency>

     <dependency>
        <groupId>com.googlecode.json-simple</groupId>
        <artifactId>json-simple</artifactId>
        <version>1.1</version>
    </dependency>

    <dependency>
        <groupId>com.owlike</groupId>
        <artifactId>genson</artifactId>
        <version>0.99</version>
    </dependency>

    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.3.1</version>
    </dependency>

</dependencies>

<build>
    <finalName>RESTfulExample</finalName>
    <plugins>
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.6</source>
                <target>1.6</target>
            </configuration>
        </plugin>
    </plugins>
</build>

Answer 1

我想指出您没有使用 java 命名约定。

您的 REST 端点需要表单数据，但您已指示它使用 JSON。 您应该让 REST 端点使用表单数据，即 @Consumes(MediaType.APPLICATION_FORM_URLENCODED) 或者，您可以将 FormParam 方法参数更改为与您的 JSON 对象或字符串参数匹配的 POJO，然后将您的 JSON 字符串反序列化为 POJO。