Jersey: list of JSON objects

2019-06-20 05:14发布

站内问答 / 前沿技术
1806 6 5

I am trying to retrieve in my Jersey implementation resource class post collection of objects like this:

@POST
@Path("/send")
@Consumes({ MediaType.APPLICATION_JSON })
@Produces({ MediaType.APPLICATION_JSON })
public String sendEmails(ArrayList<AnyEmail> email) {
    //emailManager.sendEmail(email);
    return "success";
}

I have the @XmlRootElement above `AnyEmail.

However when I post like this with REST client tool:

 emails : [
       {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"},
       {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"}
      ]

I get: 

<html><head><title>Apache Tomcat/7.0.22 - Error report</title><style><!--H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}HR {color : #525D76;}--></style> </head><body><h1>HTTP Status 500 - </h1><HR size="1" noshade="noshade"><p><b>type</b> Exception report</p><p><b>message</b> <u></u></p><p><b>description</b> <u>The server encountered an internal error () that prevented it from fulfilling this request.</u></p><p><b>exception</b> <pre>javax.servlet.ServletException: Servlet execution threw an exception
</pre></p><p><b>root cause</b> <pre>java.lang.Error: Error: could not match input
    com.sun.jersey.json.impl.reader.JsonLexer.zzScanError(JsonLexer.java:491)
    com.sun.jersey.json.impl.reader.JsonLexer.yylex(JsonLexer.java:736)

EDITED
Now I tried:

 "emails" : [
           {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"},
           {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"}
          ]

and I get:

    SEVERE: Servlet.service() for servlet [Jersey Web Application] in context with path [/API] threw exception
java.lang.ArrayIndexOutOfBoundsException: -1
    at java.util.ArrayList.get(ArrayList.java:324)
    at com.sun.jersey.json.impl.reader.JsonXmlStreamReader.valueRead(JsonXmlStreamReader.java:165)
    at com.sun.jersey.json.impl.reader.JsonXmlStreamReader.readNext(JsonXmlStreamReader.java:330)

标签： json rest jersey
举报
6条回答
混吃等死
2楼-- · 2019-06-20 05:32

This is what should work:

{
"anyEmail" : [
       {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"},
       {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"}
       ]
}

Also, you may want to use the POJO approach, which is the preferred one for JSON - see here: https://jersey.java.net/documentation/1.18/json.html

The JSON support based on JAXB has various issues with some edge cases, since there isn't a 1:1 mapping between XML (JAXB as designed for) and JSON.

查看更多
0人赞 添加讨论(0) 举报
看我几分像从前
3楼-- · 2019-06-20 05:34

I am using Jersey 1.17 and can receive list of JSON objects with the following signature and cast them into list of my POJO Objects with Google's gson library, without any issue. Using wrapper to wrap list of POJO objects, is certainly un-natural and not favourable.

   @POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces({"application/x-javascript", MediaType.APPLICATION_JSON})
public Response doSomething(@Context HttpServletRequest httpServletRequest, JSONArray listOfJSONObjects) {
    Gson gson = new GsonBuilder().create();
    List < MYPOJOClass > myPojoObjectList = gson.fromJson(listOfJSONObjects.toString(), new TypeToken < List < MYPOJOClass >> () {}.getType());
查看更多
0人赞 添加讨论(0) 举报
放我归山
4楼-- · 2019-06-20 05:35

I had the same problem. You have to wrap the AnyEmail class.

This can help you: https://blogs.oracle.com/japod/entry/missing_brackets_at_json_one

查看更多
0人赞 添加讨论(0) 举报
冷血范
5楼-- · 2019-06-20 05:49

I'm neither a Jersey nor Json expert, but did you try using a full JSON object, ie :

{
"emails" : [
       {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"},
       {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"}
      ]
}

(added braces, and quotes to emails).

查看更多
0人赞 添加讨论(0) 举报
虎瘦雄心在
6楼-- · 2019-06-20 05:51

Why you don't use a simple Java array???

[
   {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"},
   {"body": "Testing the web service", "header": "Hi", "footer": "<br/>test"}
]

And then the following method:

@POST
@Path("/send")
@Consumes({ MediaType.APPLICATION_JSON })
@Produces({ MediaType.APPLICATION_JSON })
public String sendEmails(AnyEmail[] emails) {
    //emailManager.sendEmail(emails);
    return "success";
}

That should do the trick...

查看更多
0人赞 添加讨论(0) 举报
够拽才男人
7楼-- · 2019-06-20 05:51

// Client

package com.project.rest.model;

import java.util.HashSet;
import java.util.Set;

public class Client {

    private Long id;
    private String email;
    private String lang;

    public Client() {
    }

    public Client(Long id) {
    this.id = id;
    }

    public Client(Long id, String email, String lang) {
    this.id = id;
    this.email = email;
    this.lang = lang;
    }

    public Long getId() {
    return id;
    }

    public void setId(Long id) {
    this.id = id;
    }

    public String getEmail() {
    return email;
    }

    public void setEmail(String email) {
    this.email = email;
    }

    public String getLang() {
    return lang;
    }

    public void setLang(String lang) {
    this.lang = lang;
    }


    @Override
    public String toString() {
    return "Client [id=" + id + ", email=" + email + ", lang=" + lang + "]";
    }

}

//ClientService

package com.project.rest;

import java.util.List;

import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

import com.project.rest.model.Client;

@Path("/client")
public class ClientService {

    @POST
    @Path("/sendList")
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public Response consumeJSONList(List<Client> clientList) {

        String output = "consumeJSONList Client : " + clientList.toString() + "\n\n";

        return Response.status(200).entity(output).build();
    }

}

//JerseyClient 

package com.project.rest;

import java.util.ArrayList;
import java.util.List;

import javax.ws.rs.core.MediaType;

import com.project.rest.model.Client;
import com.project.rest.model.Device;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;
import com.sun.jersey.api.json.JSONConfiguration;

public class JerseyClient {

public static void main(String[] args) {

try {

    List<Client> clientList = new ArrayList<Client>();
    clientList.add(new Client(1L, "pruebas@pruebas.com", "es"));
    clientList.add(new Client(2L, "pruebas@pruebas.com", "es"));
    clientList.add(new Client(3L, "pruebas@pruebas.com", "es"));

    ClientConfig clientConfig = new DefaultClientConfig();

    clientConfig.getFeatures().put(JSONConfiguration.FEATURE_POJO_MAPPING, Boolean.TRUE);

    com.sun.jersey.api.client.Client c = com.sun.jersey.api.client.Client.create(clientConfig);

    WebResource webResource = c.resource("http://localhost:8080/project_rest/rest/client/sendList");

    ClientResponse response = webResource.accept("application/json").type("application/json").post(ClientResponse.class, clientList);

    if (response.getStatus() != 200) {
    throw new RuntimeException("Failed sendClientList: HTTP error code : " + response.getStatus());
    }

    String output = response.getEntity(String.class);

    System.out.println("sendClientList... Server response .... \n");
    System.out.println(output);

} catch (Exception e) {

    e.printStackTrace();

}
}
}

//POM.xml

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.8.2</version>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-bundle</artifactId>
    <version>1.10-b01</version>
</dependency>

<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-server</artifactId>
    <version>1.17.1</version>
</dependency>
<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-core</artifactId>
    <version>1.17.1</version>
</dependency>
<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-servlet</artifactId>
    <version>1.17.1</version>
</dependency>
<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-json</artifactId>
    <version>1.18.1</version>
</dependency>
<dependency>
  <groupId>com.owlike</groupId>
  <artifactId>genson</artifactId>
  <version>0.99</version>
</dependency>

查看更多
0人赞 添加讨论(0) 举报
登录 后发表回答
相关问题
查看全部
相关文章
查看全部
收藏的人(5)