使用ClientResponse发布时，Jersey客户端MessageBodyProviderNotFoundException(Jersey client MessageBodyProviderNotFoundException when posting using ClientResponse)

 我正尝试使用Jersey客户端来调用REST服务（不使用Jersey / JAX-RS）。 以下代码正常工作以发布我的表单数据并收到回复： 
 
    Form form = new Form();
    form.param("email", email);
    form.param("password", password);

    String clientResponse =
            target.request(MediaType.TEXT_PLAIN)
                    .post(Entity.entity(form, MediaType.APPLICATION_FORM_URLENCODED_TYPE),
                          String.class);
 
 代码运行良好，clientResponse变量包含来自服务器的纯文本响应。 
 
 现在，我需要检查服务器返回的状态码。 据我的理解，我需要检索作为ClientResponse对象而不是字符串的响应。 所以，我将我的代码更改为： 
 
    Form form = new Form();
    form.param("email", email);
    form.param("password", password);

    ClientResponse clientResponse =
            target.request(MediaType.TEXT_PLAIN)
                    .post(Entity.entity(form, MediaType.APPLICATION_FORM_URLENCODED_TYPE),
                          ClientResponse.class);
 
 当我运行这个新代码时，我得到以下异常： 
 
 
 
 org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException：未找到媒体类型= text / plain，type = class org.glassfish.jersey.client.Client.ClientResponse，genericType = class org.glassfish.jersey.client.ClientResponse的MessageBodyReader。 
 
 
 为什么我得到这个异常？ 

I am trying to use the Jersey client to call a REST service (which doesn't use Jersey / JAX-RS). The following code works fine to POST my form data and receive a response:
 
    Form form = new Form();
    form.param("email", email);
    form.param("password", password);

    String clientResponse =
            target.request(MediaType.TEXT_PLAIN)
                    .post(Entity.entity(form, MediaType.APPLICATION_FORM_URLENCODED_TYPE),
                          String.class);
 
The code runs fine and the clientResponse variable contains the plain text response from the server.
 
Now, I need to inspect the status code returned by the server. To my understanding, I need to retrieve the response as a ClientResponse object instead of a String. So, I changed my code to:
 
    Form form = new Form();
    form.param("email", email);
    form.param("password", password);

    ClientResponse clientResponse =
            target.request(MediaType.TEXT_PLAIN)
                    .post(Entity.entity(form, MediaType.APPLICATION_FORM_URLENCODED_TYPE),
                          ClientResponse.class);
 
When I run this new code, I get the following exception:
 
 
 
org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyReader not found for media type=text/plain, type=class org.glassfish.jersey.client.ClientResponse, genericType=class org.glassfish.jersey.client.ClientResponse.
 
 
Why am I getting this exception?

原文：https://stackoverflow.com/questions/48054073