我提出的REST服务在返回类型为@Produce(MediaType.APPLICATION_XML)
时工作正常,但是当我指定@Produce(MediaType.APPLICATION_JSON)
时,我收到以下错误消息:
找不到媒体类型= application / json的MessageBodyWriter, type = class java.util.ArrayList,genericType = java.util.List
我已经尝试过这个:adding jersey-media-jackson and jersey-jackson-moxy但它没有用。
环境:我使用 Glassfish 4.1.1 作为应用服务器, Netbeans 8.2 作为IDE。
要添加的另一件事,我不使用web.xml,我正在使用Application类来配置REST资源。
这些是我的课程:
@XmlRootElement( name = "Node")
public class Sensor implements Serializable{
protected int nwkAddr;
protected DeviceType deviceType;
protected String modelIdentifier;
protected IEEEAddress ieeeAddr;
protected String name;
protected int parentNwkAddr;
protected int appVersion;
protected int manufacturerCode;
protected List<EndPoint> endPoints;
protected List<Link> links;
protected transient List<Binding> bindings;
protected transient int linkQuality;
protected transient int reason;
// constructors, getters and setters follow...
}
这是我的服务(我正在调用getSensors()
方法):
@Path("sensors")
public class SensorsResources {
@Context
private UriInfo context;
@Path("zplugs")
public ZplugResource getZplugResource(){
return new ZplugResource();
}
@Path("zrcs")
public ZrcResource getZrcResource(){
return new ZrcResource();
}
@GET
@Produces({MediaType.APPLICATION_JSON})
public List<Sensor> getSensors(){
System.out.println("getSensors");
return NodeBdd.getListOfMyNodes();
}
}
这是一个我使用静态属性的类,只是为了模拟数据。
public class NodeBdd {
private static List<Sensor> listOfMyNodes = new ArrayList<>();
static{
listOfMyNodes.add(new Sensor(1, DeviceType.COORDINATOR, "modelidentifier1", IEEEAddress.NULL_IEEE_ADDR, "UBEE", 0, 0, 0, null, null, null, 0, 0));
listOfMyNodes.add(new Sensor(2, DeviceType.END_DEVICE, "modelidentifier2", IEEEAddress.UNKNOWN_IEEE_ADDR, "ZPLUG", 1, 1, 1, null, null, null, 1, 1));
listOfMyNodes.add(new Sensor(3, DeviceType.END_DEVICE, "modelidentifier3", IEEEAddress.UNKNOWN_IEEE_ADDR, "ZRC", 2, 2, 2, null, null, null, 2, 2));
listOfMyNodes.add(new Sensor(4, DeviceType.END_DEVICE, "modelidentifier4", IEEEAddress.UNKNOWN_IEEE_ADDR, "ZPLUG", 4, 4, 4, null, null, null, 4, 4));
listOfMyNodes.add(new Sensor(5, DeviceType.END_DEVICE, "modelidentifier5", IEEEAddress.UNKNOWN_IEEE_ADDR, "ZRC", 5, 5, 5, null, null, null, 5, 5));
}
public static List<Sensor> getListOfMyNodes() {
return listOfMyNodes;
}
public static List<Sensor> getSpecificListOfNodes(String type){
List<Sensor> specificList = new ArrayList<>();
for (Sensor current : listOfMyNodes) {
if(type.equalsIgnoreCase(current.getName())){
specificList.add(current);
}
}
return specificList;
}
}