gson处理多层嵌套的复杂形式的json

当一个Class的字段属性中包含另一个class时gson能正常处理吗？ 最初看到网上有说使用static的说法 经验证是不需要的 直接当普通类来用就可以了。

直接使用gson.fromJson方法即可。

以下为测试代码

import java.io.Serializable;
@SuppressWarnings("serial")
public class House implements Serializable {
public House() {
}

private int ID;
private String HouseName;
private String HouseNo;
private Integer State;
private Integer ParentID;
private Integer UserID;
private String Remark;
private Long UpSB;
private Integer AgentID;

private HousePars Pars;
private CtrMP3 Mp3;
private ZigbeeSB Zigbeesb;

/**
* 主键ID
*/
public final void setID(int value) {
ID = value;
}

public final int getID() {
return ID;
}

/**
* 名称
*/
public final void setHouseName(String value) {
HouseName = value;
}

public final String getHouseName() {
return HouseName;
}

/**
* 房间编号
*/
public final void setHouseNo(String value) {
HouseNo = value;
}

public final String getHouseNo() {
return HouseNo;
}

/**
* 状态
*/
public final void setState(Integer value) {
State = value;
}

public final Integer getState() {
return State;
}

/**
* 上级区域
*/
public final void setParentID(Integer value) {
ParentID = value;
}

public final Integer getParentID() {
return ParentID;
}

/**
* 所属用户
*/
public final void setUserID(Integer value) {
UserID = value;
}

public final Integer getUserID() {
return UserID;
}

public final void setRemark(String value) {
Remark = value;
}

public final String getRemark() {
return Remark;
}

/**
* 客户编号
*
* @return
*/
public Integer getAgentID() {
return AgentID;
}

public void setAgentID(Integer agentID) {
AgentID = agentID;
}

/**
* 协调器地址
*
* @return
*/
public Long getUpSB() {
return UpSB;
}

public void setUpSB(Long upSB) {
UpSB = upSB;
}

public HousePars getPars() {
return Pars;
}

public void setPars(HousePars pars) {
Pars = pars;
}

public CtrMP3 getMp3() {
return Mp3;
}

public void setMp3(CtrMP3 mp3) {
Mp3 = mp3;
}

public ZigbeeSB getZigbeesb() {
return Zigbeesb;
}

public void setZigbeesb(ZigbeeSB zigbeesb) {
Zigbeesb = zigbeesb;
}

}

 

上述类中 CtrMP3 ，ZigbeeSB，HousePars 都是单独的类

从JSON转为java对象方法

Json举例（实际上是WEB服务自动转化而来的）

 

{"d":{"__type":"Model.House","Zigbeesb":{"__type":"IntelligenceFactory.Model.ZigbeeSB","MacHex":"D7D15702004B1200","ID":69,"Jiange":7098850,"MacAddrstr":"D7D15702004B1200","ParentMacstr":"D7D15702004B1200","RootMacstr":"0000000000000000","MacAddr":-2895437419316047360,"Name":"协调器","ModelNo":null,"UserID":1,"ParentMac":-2895437419316047360,"RootMac":0,"IsMain":true,"Description":"","SortIndex":null,"Signal":255,"LastTime":"\/Date(1389414412000)\/","Type":null,"HouseID":23,"Remark":"7098850","AgentID":1},"Mp3":{"__type":"Model.CtrMP3","Jiange":null,"ID":19,"Name":"播放器2","MacAddr":null,"NameCode":"114","MacID":null,"UserID":null,"HouseID":1,"Type":null,"State":1,"LastTime":null,"Position":"","Direction":"","Value1":1,"Value2":2,"Value3":null,"Value4":null,"Value5":null,"Value6":null,"OtherValue":"","Remark":"","LinkState":null,"AgentID":1},"Pars":{"ID":1,"HouseID":23,"State1":0,"State2":null,"OtherState":"","Pars1":"2","Pars2":"10","OthePars":"","LastTime":null,"Description":"测试房间MP3"},"MacID":null,"ID":23,"HouseName":"admin","HouseNo":"02","State":1,"ParentID":null,"UserID":1,"Remark":"","UpSB":-2895437419316047360,"AgentID":1}}

 

/**
* 获取当前房间参数信息
*
* @param houseid 房间ID
* @param hashmap 成功失败标志
* @return 返回House参数信息
* @throws UnsupportedEncodingException
* @throws JSONException
*/
@SuppressWarnings("finally")
public static House GetHousePars(int houseid,
HashMap<String, Integer> hashmap)
throws UnsupportedEncodingException, JSONException {
Log.i(tag, STRUrl);
int flag = 0;
House ur = null;
String tag = "httppost";
Log.i(tag, "获取房间信息");
// 设置服务地址
String Url = STRUrl + "InteWebService.asmx/GetHouse";
HttpPost request = new HttpPost(Url);// 定义一个HTTP请求
request.addHeader("Content-Type", "application/json; charset=utf-8");// 设置返回的内容为json格式
// Post参数传递 JSON格式
JSONObject jsonParams = new JSONObject();
jsonParams.put("houseid", houseid);// 传参，如果想传递两个参数则继续添加第二个参数jsonParams.put("param2Name","param2Value")
Log.i(tag, "houseid=" + houseid);
HttpEntity bodyEntity = new StringEntity(jsonParams.toString(), "utf8");// 参数必须也得是JSON数据格式的字符串才能传递到服务器端，否则会出现"{'Message':'strName是无效的JSON基元'}"的错误
request.setEntity(bodyEntity);
HttpClient httpClient = new DefaultHttpClient();
String res = "";
try {
Log.i(tag, "开始执行请求GetHousePars");
Log.i(tag, Url);
HttpResponse response = httpClient.execute(request);
int state = response.getStatusLine().getStatusCode();
Log.i(tag, "返回状态" + state);
if (state == 200) {
// 200表示连接成功 404 连接失败
Log.i(tag, "状态200连接成功");
HttpEntity entity = response.getEntity();// 获取返回结果
res = EntityUtils.toString(entity);
Log.i(tag, res);
GsonBuilder gsonb = new GsonBuilder();
// Json中的日期表达方式没有办法直接转换成我们的Date类型, 因此需要单独注册一个Date的反序列化类.
DateDeserializer ds = new DateDeserializer();
// 给GsonBuilder方法单独指定Date类型的反序列化方法
gsonb.registerTypeAdapter(java.util.Date.class, ds);
Gson gson = gsonb.create();
JSONObject resultJSON = new JSONObject(res);
String data = resultJSON.get("d").toString();
Log.i(tag, data);
if ("null" != data) {
Log.i(tag, "返回不为null开始转换");
// 登录成功 返回用户信息 注意时间格式的提取
ur = gson.fromJson(data, House.class);
if (ur != null) {
flag = 1;
hashmap.put("flag", flag);
return ur;
}
} else {
// 没有返回用户信息
Log.i(tag, "返回为null");
flag = 0;// 房间信息不存在
hashmap.put("flag", flag);
}

} else {
flag = 2;// 网络连接异常
hashmap.put("flag", flag);
Log.i("httppost", "连接失败"
+ response.getStatusLine().getStatusCode());
}

} catch (Exception e) {
flag = -1;// 程序异常
hashmap.put("flag", flag);
Log.i("httppost", "获取信息异常" + e.getMessage());
} finally {
hashmap.put("flag", flag);
Log.i("httppost", "关闭try");
return ur;
}
}