HTTP 415不支持的媒体类型

我创建了一个样本Web服务来进行邮寄。

我正在使用Jersey JAX-RS和Maven。

web.xml

<servlet>
    <servlet-name>provider-serlvet</servlet-name>
    <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>org.is.ws.provider.rest.ProviderAggregateApplication</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>provider-serlvet</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

POM文件

<!-- Jersey jars -->

    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-client</artifactId>
        <version>1.19</version>
    </dependency> 
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-core</artifactId>
        <version>1.19</version>
    </dependency>           
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-server</artifactId>
        <version>1.19</version>
    </dependency>
    <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-servlet</artifactId>
        <version>1.19</version>
    </dependency>
      <dependency>
        <groupId>com.sun.jersey</groupId>
        <artifactId>jersey-json</artifactId>
        <version>1.18</version>
      </dependency>
      <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>

方法调用：

@POST
@Path(RESOURCE_PATH)
@Produces("text/plain")
public String getPCP(){
    return "Hello";
}

原始请求：

 POST http://localhost:9080/sep/pas/getPCP HTTP/1.1
 Connection: close
 Accept-Encoding: gzip,deflate
 Content-Type: application/json
 Content-Length: 69
 Host: localhost:9080
 User-Agent: Apache-HttpClient/4.1.1 (java 1.5)

  {
    "patientID": "1234567890",
    "patientIDType": "XYZ"
  }

我已经提到了以下文章

REST Web服务返回415-不支持的媒体类型

但是我仍然有问题。