java 数据绑定的几种方式及相关注意事项-持续更新
spring mvc 中会遇到各种数据绑定，有些不常用的，但是千万不要觉得不可以，没有什么是不可以的，只要能够想到，就可以。
数据绑定方式：
1.
注意：
当数据为包装类型的数字型时，如果Long hospitalId为空或-1，则Long departmentAllId= -1，如果Lang departmentAllId为空或-1 则Lang hospitalId = -1，既a和b不能同时存在。
如果不传hospitalId，那么在null和数字之间的判断极可能出现空指针，因为如果null！=null 后 使用==和数字判断时，hospitalId会做类型转换，从而导致空指针。
if(hospitalId!=null && hospitalId!=-1){
departmentAllId = -1;
} else {
departmentId = -1;
}
2. 对象多个属性为集合数据
json:
//String json = "{'signedSummaryId':1,'tilte':'bbbbb','archiveDate':'1999-2-2','createdDoctor':1001,'createdDoctorName':'ccccc','main_suit':[{'content':'1111111','pic':'1111111','voice':'1111111','archiveTypeName':'主诉','archiveType':1}],'body_check':[{'content':'2222222','pic':'2222222','voice':'222222','archiveTypeName':'查体','archiveType':2}],'diagnosis':[{'content':'3333','pic':'3333','voice':'333','archiveTypeName':'诊断','archiveType':3}],'recipel':[{'content':'444','pic':'44','voice':'44444','archiveTypeName':'处方','archiveType':4},{'content':'444aaa','pic':'44aaa','voice':'44444aaa','archiveTypeName':'处方','archiveType':4}],'report':[{'content':'555','pic':'55555','voice':'5555','archiveTypeName':'报告单','archiveType':5},{'content':'55aaa','pic':'555aaa','voice':'5555aaa','archiveTypeName':'报告单','archiveType':5}],'discharge_abstract':[{'content':'7777','pic':'7777','voice':'77777','archiveTypeName':'出院小结','archiveType':7}],'proof_of_diagnosis':[{'content':'8888','pic':'888','voice':'8888','archiveTypeName':'诊疗证明','archiveType':8}],'up_referral':[{'content':'9999','pic':'999999','voice':'99999','archiveTypeName':'上转','archiveType':9}],'down_referral':[{'content':'1010110101','pic':'1010101010','voice':'10100110','archiveTypeName':'下转','archiveType':10}],'follow_Up':[{'content':'666','pic':'3666','voice':'3666','archiveTypeName':'随诊','archiveType':6}]}";
"{
'signedSummaryId': 1,
'tilte': 'bbbbb',
'archiveDate': '1999-2-2',
'createdDoctor': 1001,
'createdDoctorName': 'ccccc',
'main_suit': [
{
'content': '1111111',
'pic': '1111111',
'voice': '1111111',
'archiveTypeName': '主诉',
'archiveType': 1
}
],
'body_check': [
{
'content': '2222222',
'pic': '2222222',
'voice': '222222',
'archiveTypeName': '查体',
'archiveType': 2
}
],
'diagnosis': [
{
'content': '3333',
'pic': '3333',
'voice': '333',
'archiveTypeName': '诊断',
'archiveType': 3
}
],
'recipel': [
{
'content': '444',
'pic': '44',
'voice': '44444',
'archiveTypeName': '处方',
'archiveType': 4
},
{
'content': '444aaa',
'pic': '44aaa',
'voice': '44444aaa',
'archiveTypeName': '处方',
'archiveType': 4
}
],
'report': [
{
'content': '555',
'pic': '55555',
'voice': '5555',
'archiveTypeName': '报告单',
'archiveType': 5
},
{
'content': '55aaa',
'pic': '555aaa',
'voice': '5555aaa',
'archiveTypeName': '报告单',
'archiveType': 5
}
],
'discharge_abstract': [
{
'content': '7777',
'pic': '7777',
'voice': '77777',
'archiveTypeName': '出院小结',
'archiveType': 7
}
],
'proof_of_diagnosis': [
{
'content': '8888',
'pic': '888',
'voice': '8888',
'archiveTypeName': '诊疗证明',
'archiveType': 8
}
],
'up_referral': [
{
'content': '9999',
'pic': '999999',
'voice': '99999',
'archiveTypeName': '上转',
'archiveType': 9
}
],
'down_referral': [
{
'content': '1010110101',
'pic': '1010101010',
'voice': '10100110',
'archiveTypeName': '下转',
'archiveType': 10
}
],
'follow_Up': [
{
'content': '666',
'pic': '3666',
'voice': '3666',
'archiveTypeName': '随诊',
'archiveType': 6
}
]
}"
Gson gson = new Gson();
ArchiveAddModel archiveAddModel = gson.fromJson(json, ArchiveAddModel.class);
