这是我的架构类Server.java->
@Generated("org.jsonschema2pojo")
public class Server {
private String status;
private String updated;
private String hostId;
private String oSEXTSRVATTRHost;
private Networks addresses;
private List<Link> links = new ArrayList<Link>();
private Object keyName;
private Image image;
private Object oSEXTSTSTaskState;
private String oSEXTSTSVmState;
private String oSEXTSRVATTRInstanceName;
private String oSSRVUSGLaunchedAt;
private String oSEXTSRVATTRHypervisorHostname;
private Flavor flavor;
private String id;
private List<SecurityGroup> securityGroups = new ArrayList<SecurityGroup>();
private Object oSSRVUSGTerminatedAt;
private String oSEXTAZAvailabilityZone;
private String userId;
private String name;
private String created;
private String tenantId;
private String oSDCFDiskConfig;
private List<Object> osExtendedVolumesVolumesAttached = new ArrayList<Object>();
private String accessIPv4;
private String accessIPv6;
private Integer progress;
private Integer oSEXTSTSPowerState;
private String configDrive;
private Metadata metadata;
private Map<String, Object> additionalProperties = new HashMap<String, Object>();
public String getStatus() {
return status;
}
. ..
More getters and setters here.
. ..
}
这是我要为其生成POJO的JSON字符串：-
{
"server": {
"status": "ACTIVE",
"updated": "2014-07-18T09:55:14Z",
"hostId": "872e9b93ccd50b93612d49f4c371f49fe6365f02bcb51994868eb88f",
"OS-EXT-SRV-ATTR:host": "controller",
"addresses": {
"officenet": [
{
"OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:25:0d:c8",
"version": 4,
"addr": "10.43.1.183",
"OS-EXT-IPS:type": "fixed"
}
]
},
"links": [
{
"href": "http://10.43.1.197:8774/v2/1333f00f05564a02b3c4f608b9622fc9/servers/4e357d2e-b3b1-4160-95b9-fc9102a375d9",
"rel": "self"
},
{
"href": "http://10.43.1.197:8774/1333f00f05564a02b3c4f608b9622fc9/servers/4e357d2e-b3b1-4160-95b9-fc9102a375d9",
"rel": "bookmark"
}
],
"key_name": null,
"image": {
"id": "b724ae53-9113-4e33-987a-f58fd9a4ec81",
"links": [
{
"href": "http://10.43.1.197:8774/1333f00f05564a02b3c4f608b9622fc9/images/b724ae53-9113-4e33-987a-f58fd9a4ec81",
"rel": "bookmark"
}
]
},
"OS-EXT-STS:task_state": null,
"OS-EXT-STS:vm_state": "active",
"OS-EXT-SRV-ATTR:instance_name": "instance-00000017",
"OS-SRV-USG:launched_at": "2014-07-11T11:43:41.000000",
"OS-EXT-SRV-ATTR:hypervisor_hostname": "controller",
"flavor": {
"id": "2",
"links": [
{
"href": "http://10.43.1.197:8774/1333f00f05564a02b3c4f608b9622fc9/flavors/2",
"rel": "bookmark"
}
]
},
"id": "4e357d2e-b3b1-4160-95b9-fc9102a375d9",
"security_groups": [
{
"name": "default"
}
],
"OS-SRV-USG:terminated_at": null,
"OS-EXT-AZ:availability_zone": "nova",
"user_id": "a859477b42794e8fa6dbf339361bb268",
"name": "Akshay-Debian-2",
"created": "2014-07-11T11:43:35Z",
"tenant_id": "1333f00f05564a02b3c4f608b9622fc9",
"OS-DCF:diskConfig": "MANUAL",
"os-extended-volumes:volumes_attached": [],
"accessIPv4": "",
"accessIPv6": "",
"progress": 0,
"OS-EXT-STS:power_state": 1,
"config_drive": "",
"metadata": {}
}
}
这是我的主要代码，它使用Gson从JSON字符串生成POJO：-
public class ServerDataMapper {
public static void main(String Args[]) {
String myJSONString = "{\n \"server\": {\n \"status\": \"ACTIVE\",\n \"updated\": \"2014-07-18T09:55:14Z\",\n \"hostId\": \"872e9b93ccd50b93612d49f4c371f49fe6365f02bcb51994868eb88f\",\n \"OS-EXT-SRV-ATTR:host\": \"controller\",\n \"addresses\": {\n \"officenet\": [\n {\n \"OS-EXT-IPS-MAC:mac_addr\": \"fa:16:3e:25:0d:c8\",\n \"version\": 4,\n \"addr\": \"10.43.1.183\",\n \"OS-EXT-IPS:type\": \"fixed\"\n }\n ]\n },\n \"links\": [\n {\n \"href\": \"http://10.43.1.197:8774/v2/1333f00f05564a02b3c4f608b9622fc9/servers/4e357d2e-b3b1-4160-95b9-fc9102a375d9\",\n \"rel\": \"self\"\n },\n {\n \"href\": \"http://10.43.1.197:8774/1333f00f05564a02b3c4f608b9622fc9/servers/4e357d2e-b3b1-4160-95b9-fc9102a375d9\",\n \"rel\": \"bookmark\"\n }\n ],\n \"key_name\": null,\n \"image\": {\n \"id\": \"b724ae53-9113-4e33-987a-f58fd9a4ec81\",\n \"links\": [\n {\n \"href\": \"http://10.43.1.197:8774/1333f00f05564a02b3c4f608b9622fc9/images/b724ae53-9113-4e33-987a-f58fd9a4ec81\",\n \"rel\": \"bookmark\"\n }\n ]\n },\n \"OS-EXT-STS:task_state\": null,\n \"OS-EXT-STS:vm_state\": \"active\",\n \"OS-EXT-SRV-ATTR:instance_name\": \"instance-00000017\",\n \"OS-SRV-USG:launched_at\": \"2014-07-11T11:43:41.000000\",\n \"OS-EXT-SRV-ATTR:hypervisor_hostname\": \"controller\",\n \"flavor\": {\n \"id\": \"2\",\n \"links\": [\n {\n \"href\": \"http://10.43.1.197:8774/1333f00f05564a02b3c4f608b9622fc9/flavors/2\",\n \"rel\": \"bookmark\"\n }\n ]\n },\n \"id\": \"4e357d2e-b3b1-4160-95b9-fc9102a375d9\",\n \"security_groups\": [\n {\n \"name\": \"default\"\n }\n ],\n \"OS-SRV-USG:terminated_at\": null,\n \"OS-EXT-AZ:availability_zone\": \"nova\",\n \"user_id\": \"a859477b42794e8fa6dbf339361bb268\",\n \"name\": \"Akshay-Debian-2\",\n \"created\": \"2014-07-11T11:43:35Z\",\n \"tenant_id\": \"1333f00f05564a02b3c4f608b9622fc9\",\n \"OS-DCF:diskConfig\": \"MANUAL\",\n \"os-extended-volumes:volumes_attached\": [],\n \"accessIPv4\": \"\",\n \"accessIPv6\": \"\",\n \"progress\": 0,\n \"OS-EXT-STS:power_state\": 1,\n \"config_drive\": \"\",\n \"metadata\": {}\n }\n}";
try {
Gson gson = new Gson();
Server server = gson.fromJson( myJSONString, Server.class);
System.out.println(server.getName());
System.out.println(server.getHostId());
System.out.println(server.getId());
System.out.println(server.getTenantId());
System.out.println(server.getStatus());
} catch (Exception e) {
e.printStackTrace();
}
}
}
我打印的getId等值是NULL，我不明白我在做什么错？请告诉我。编译没有错误，也没有警告。
这里是渴望的灵魂。生成Java代码以解析JSON，然后使用GSON库将该值设置为java对象。 https://www.easycodeforall.com/GenerateCodeForJSON.jsp