关于Object references an unsaved transient instance

首先引用以下连接,从中得到答案:

http://www.newbooks.com.cn/info/118573.html

在我自己的实际项目中发生如下问题:

java 代码

1. try {   
2.             grpCustomerInfo.setCorporationname(corporationName);   
3.             grpCustomerInfo.setProvince(province);   
4.             grpCustomerInfo.setCity(city);   
5.             grpCustomerInfo.setParentsign(ynoHO);   
6.             grpCustomerInfo.setOrganizationproperty(organizationProperty);   
7.             grpCustomerInfo.setParentcustomerid(mainCustomerIDForSub);   
8.             grpCustomerInfo.setCorporationadds(corporationAdds);   
9.             grpCustomerInfo.setCorporationproperty(corporationProperty);   
10.             grpCustomerInfo.setTradetype(tradeType);   
11.             grpCustomerInfo.setCorporationphone(corporationPhone);   
12.             grpCustomerInfo.setCorporationfax(corporationFax);   
13.             grpCustomerInfo.setPostalcode(postalcode);   
14.             grpCustomerInfo.setFoundationdate(foundationDate);   
15.             grpCustomerInfo.setSumpersons(Integer.getInteger(sumPersons));             
16.             grpCustomerInfo.setCustomerid(maincustomerid);   
17.             //管理机构   
18.             grpCustomerInfo.setOrganization(organization);   
19.             //操作者   
20.             grpCustomerInfo.setOperator(operator);   
21.             //操作时间   
22.             grpCustomerInfo.setOperationTime(operationTime);   
23.             grpCustomerInfo.getNewpolicies().add(this.getNewPolicy(printNO));   
24.             this.getNewPolicy(printNO).setGrpcustomerinfo(grpCustomerInfo);   
25.             this.getGrpCustomerInfoDAO().save(grpCustomerInfo);   
26.             this.getNewPolicyDAO().update(this.getNewPolicy(printNO));   
27.             //设置表Savenewpolicystate的Savecustomerinofstate字段为1，该字段表示客户信息已经保存   
28.             //客户信息录入状态   
29.             this.getNewPolicy(printNO).getSavenewpolicystate().setSavecustomerinofstate("1");              
30.                
31.             this.getSaveNewPolicyStateDAO().update(this.getNewPolicy(printNO).getSavenewpolicystate());   
32.             bl=true;   
33.         } catch (Exception e) {   
34.             e.printStackTrace();   
35.         }   
36.         return bl;  

 但是如果将24行到29行顺序调整为:

java 代码

1. this.getNewPolicy(printNO).setGrpcustomerinfo(grpCustomerInfo);   
2.   
3. //设置表Savenewpolicystate的Savecustomerinofstate字段为1，该字段表示客户信息已经保存   
4. //客户信息录入状态   
5. this.getNewPolicy(printNO).getSavenewpolicystate().setSavecustomerinofstate("1");   
6.   
7. this.getGrpCustomerInfoDAO().save(grpCustomerInfo);   
8. this.getNewPolicyDAO().update(this.getNewPolicy(printNO));   
9. this.getSaveNewPolicyStateDAO().update(this.getNewPolicy(printNO).getSavenewpolicystate());  

将会发生Object references an unsaved transient instance的问题.

因为"某个对象的某个属性是一个实体，在这个实体没有保存之前就保存这个对象而造成了这个错误。"在以上例子中this.getNewPolicy(printNO)没有保存,就在以下的程序中使用了,this.getNewPolicy(printNO).getSavenewpolicystate().所以出现错误!