JSON转换成复合BEAN问题？ -

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JSON转换成复合BEAN问题？

请哪位大侠帮忙解决一下

第一个JAVABEAN：
public class ResultRules {
private String gTaskId;
private int ulRet;
private String execStatus;
private int ulRetParam1;
private int ulRetParam2;
private int ulTaskStatus;
private String cmdName;
private int nNUms;
private List<Rules> rules;

public String getgTaskId() {
return gTaskId;
}

public void setgTaskId(String gTaskId) {
this.gTaskId = gTaskId;
}

public int getUlRet() {
return ulRet;
}

public void setUlRet(int ulRet) {
this.ulRet = ulRet;
}

public String getExecStatus() {
return execStatus;
}

public void setExecStatus(String execStatus) {
this.execStatus = execStatus;
}

public int getUlRetParam1() {
return ulRetParam1;
}

public void setUlRetParam1(int ulRetParam1) {
this.ulRetParam1 = ulRetParam1;
}

public int getUlRetParam2() {
return ulRetParam2;
}

public void setUlRetParam2(int ulRetParam2) {
this.ulRetParam2 = ulRetParam2;
}

public int getUlTaskStatus() {
return ulTaskStatus;
}

public void setUlTaskStatus(int ulTaskStatus) {
this.ulTaskStatus = ulTaskStatus;
}

public String getCmdName() {
return cmdName;
}

public void setCmdName(String cmdName) {
this.cmdName = cmdName;
}

public int getnNUms() {
return nNUms;
}

public void setnNUms(int nNUms) {
this.nNUms = nNUms;
}

public List<Rules> getRules() {
return rules;
}

public void setRules(List<Rules> rules) {
this.rules = rules;
}

}

第二个JAVABEAN：

public class Rules {
private int nSnmpTry;
private int nSnmpVersion;
private String szCommunity;
private int nType;
private int nCurrentTick;
private String szParam;
private String szOid;
private int PollTime;
private String szUpdateTime;
private String szCreateTime;
private String szSnmpIP;
private int ID;
private int nSnmpTimeOut;
private int nSnmpPort;

public int getnSnmpTry() {
return nSnmpTry;
}

public void setnSnmpTry(int nSnmpTry) {
this.nSnmpTry = nSnmpTry;
}

public int getnSnmpVersion() {
return nSnmpVersion;
}

public void setnSnmpVersion(int nSnmpVersion) {
this.nSnmpVersion = nSnmpVersion;
}

public String getSzCommunity() {
return szCommunity;
}

public void setSzCommunity(String szCommunity) {
this.szCommunity = szCommunity;
}

public int getnType() {
return nType;
}

public void setnType(int nType) {
this.nType = nType;
}

public int getnCurrentTick() {
return nCurrentTick;
}

public void setnCurrentTick(int nCurrentTick) {
this.nCurrentTick = nCurrentTick;
}

public String getSzParam() {
return szParam;
}

public void setSzParam(String szParam) {
this.szParam = szParam;
}

public String getSzOid() {
return szOid;
}

public void setSzOid(String szOid) {
this.szOid = szOid;
}

public int getPollTime() {
return PollTime;
}

public void setPollTime(int pollTime) {
PollTime = pollTime;
}

public String getSzUpdateTime() {
return szUpdateTime;
}

public void setSzUpdateTime(String szUpdateTime) {
this.szUpdateTime = szUpdateTime;
}

public String getSzCreateTime() {
return szCreateTime;
}

public void setSzCreateTime(String szCreateTime) {
this.szCreateTime = szCreateTime;
}

public String getSzSnmpIP() {
return szSnmpIP;
}

public void setSzSnmpIP(String szSnmpIP) {
this.szSnmpIP = szSnmpIP;
}

public int getID() {
return ID;
}

public void setID(int iD) {
ID = iD;
}

public int getnSnmpTimeOut() {
return nSnmpTimeOut;
}

public void setnSnmpTimeOut(int nSnmpTimeOut) {
this.nSnmpTimeOut = nSnmpTimeOut;
}

public int getnSnmpPort() {
return nSnmpPort;
}

public void setnSnmpPort(int nSnmpPort) {
this.nSnmpPort = nSnmpPort;
}

public Rules() {

}

public Rules(int nSnmpTry, int nSnmpVersion, String szCommunity, int nType, int nCurrentTick, String szParam, String szOid, int pollTime, String szUpdateTime, String szCreateTime, String szSnmpIP, int iD, int nSnmpTimeOut, int nSnmpPort) {
  super();
  this.nSnmpTry = nSnmpTry;
  this.nSnmpVersion = nSnmpVersion;
  this.szCommunity = szCommunity;
  this.nType = nType;
  this.nCurrentTick = nCurrentTick;
  this.szParam = szParam;
  this.szOid = szOid;
  this.PollTime = pollTime;
  this.szUpdateTime = szUpdateTime;
  this.szCreateTime = szCreateTime;
  this.szSnmpIP = szSnmpIP;
  this.ID = iD;
  this.nSnmpTimeOut = nSnmpTimeOut;
  this.nSnmpPort = nSnmpPort;
}

调用代码：

JSONArray jsonArray = JSONArray.fromObject(result);
  Map<String, Class> map = new HashMap<String, Class>();
  map.put("rules", Rules.class);
  for (int i = 0; i < jsonArray.size(); i++) {
   JSONObject jsonObject = (JSONObject) jsonArray.get(i);
   ResultRules resultRules = (ResultRules) jsonObject.toBean(jsonObject, ResultRules.class, map);
   System.out.println(resultRules.getUlTaskStatus());
  }

报错情况如下：

net.sf.json.JSONException: java.lang.NoSuchMethodException: Unknown property 'rules' on class 'class com.smonitor.bean.ResultRules'
at net.sf.json.util.PropertySetStrategy$DefaultPropertySetStrategy._setProperty(PropertySetStrategy.java:69)
at net.sf.json.util.PropertySetStrategy$DefaultPropertySetStrategy.setProperty(PropertySetStrategy.java:60)
at net.sf.json.JSONObject.setProperty(JSONObject.java:1394)
at net.sf.json.JSONObject.toBean(JSONObject.java:422)
at net.sf.json.JSONObject.toBean(JSONObject.java:252)
at com.smonitor.web.CommandAction.doPost(CommandAction.java:74)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.NoSuchMethodException: Unknown property 'rules' on class 'class com.smonitor.bean.ResultRules'
at org.apache.commons.beanutils.PropertyUtilsBean.setSimpleProperty(PropertyUtilsBean.java:2133)
at org.apache.commons.beanutils.PropertyUtils.setSimpleProperty(PropertyUtils.java:890)
at net.sf.json.util.PropertySetStrategy$DefaultPropertySetStrategy._setProperty(PropertySetStrategy.java:67)
... 19 more