java 为什么缺少媒体类型应用程序/json 的编写器
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Why writer for media type application/json missing
提问by markl
Basically I have a restful service (post) that consumes(application/json) and produces (application/json). The single param for this service is an annotated java object.
基本上我有一个宁静的服务（post），它消耗（application/json）并产生（application/json）。此服务的单个参数是一个带注释的 java 对象。
I am using org.jboss.resteasy.client.ClientRequestto send the request to the service. However, I am getting this exception in the client end and the exception:
我正在使用org.jboss.resteasy.client.ClientRequest将请求发送到服务。但是，我在客户端和异常中收到此异常：
could not find writer for content-type
application/jsontype.
找不到内容类型
application/json类型的作者。
Does this mean that I am missing some library jars or I have to write my own writer for application/json?
这是否意味着我缺少一些库 jar 或者我必须为 application/json 编写自己的编写器？
I am using resteasy 1.1
我正在使用resteasy 1.1
Mark
标记
回答by Dan
Raman is correct. Jettison is a valid option. You can also use Hymanson. If you are using maven, it is as simple as including the following dependency in you pom:
拉曼是对的。抛弃是一个有效的选择。您也可以使用Hyman逊。如果你使用的是 maven，它就像在你的 pom 中包含以下依赖一样简单：
<dependency>
<groupId>org.jboss.resteasy</groupId>
<artifactId>resteasy-Hymanson-provider</artifactId>
<version>2.3.2.Final</version>
</dependency>
At which point you should have no problem writing code such as:
在这一点上，您编写代码应该没有问题，例如：
SomeBean query = new SomeBean("args")
request.body("application/json", query);
ClientResponse response = request.post();
回答by Ramanqul Buzaubak
actually I had the same problem, I did solve it by adding jettison provider for application/json mime type. I don't know whether resteasy 1.1 containts jettison provider but version 1.2 does. Also if you are using jdk 1.6 you must exclude javax.xml.stream:stax-api jar file, otherwise you will have a problem.
实际上我遇到了同样的问题，我确实通过为 application/json mime 类型添加 jettison 提供程序来解决它。我不知道 resteasy 1.1 是否包含抛弃提供程序，但 1.2 版包含。此外，如果您使用的是 jdk 1.6，则必须排除 javax.xml.stream:stax-api jar 文件，否则会出现问题。
Here is the example:
这是示例：
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name="account")
public class Account {
private Long id;
private String accountNo;
public Account(){}
public Account(String no) {
accountNo=no;
}
@Id
@XmlElement
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@XmlElement
public String getAccountNo() {
return accountNo;
}
public void setAccountNo(String a) {
accountNo = a;
}
}
and JAXB class:
和 JAXB 类：
import java.util.ArrayList;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
@Path("/account")
public class AccountService {
@GET
@Path("/{accountNo}")
@Produces("application/json")
public Account getAccount(@PathParam("accountNo") String accountNo) {
return new Account(accountNo);
}
}
That's all, have a nice day!
就这样，祝你有美好的一天！
回答by fmucar
Add below to the Resource class or the method causing the exception
将下面添加到 Resource 类或导致异常的方法
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
