tester

public class Tester {
/**
* @param args
*/
public static void main(String[] args) {

List<DbEntity> dbList= new ArrayList<DbEntity>();

DbEntity db1 = new DbEntity();
db1.setKey("key1");
db1.setShohinServiceCd("code1");
db1.setCol2("col20");
db1.setCol3("col30");
db1.setDelFlg("0");
dbList.add(db1);

DbEntity db2 = new DbEntity();
db2.setKey("key1");
db2.setShohinServiceCd("code2");
db2.setCol2("col20");
db2.setCol3("col30");
db2.setDelFlg("0");
dbList.add(db2);

DbEntity db3 = new DbEntity();
db3.setKey("key1");
db3.setShohinServiceCd("code3");
db3.setCol2("col20");
db3.setCol3("col30");
db3.setDelFlg("1");
dbList.add(db3);

DbEntity db4 = new DbEntity();
db4.setKey("key1");
db4.setShohinServiceCd("code4");
db4.setCol2("col20");
db4.setCol3("col30");
db4.setDelFlg("0");
dbList.add(db4);

DbEntity db5 = new DbEntity();
db5.setKey("key1");
db5.setShohinServiceCd("code5");
db5.setCol2("col20");
db5.setCol3("col30");
db5.setDelFlg("1");
dbList.add(db5);

DbEntity db6 = new DbEntity();
db6.setKey("key2");
db6.setShohinServiceCd("code1");
db6.setCol2("col21");
db6.setCol3("col31");
db6.setDelFlg("0");
dbList.add(db6);

FormEntity form = new FormEntity();
form.setKey("key1");
form.setCol2("col22");
form.setCol3("col32");
List<ShohinServiceEntity> shohinServiceList = new ArrayList<ShohinServiceEntity>();
ShohinServiceEntity entity1 = new ShohinServiceEntity();
entity1.setShohinServiceCd("code1");
entity1.setShohinServiceName("name1");

ShohinServiceEntity entity4 = new ShohinServiceEntity();
entity4.setShohinServiceCd("code4");
entity4.setShohinServiceName("name4");

ShohinServiceEntity entity5 = new ShohinServiceEntity();
entity5.setShohinServiceCd("code5");
entity5.setShohinServiceName("name5");

ShohinServiceEntity entity6 = new ShohinServiceEntity();
entity6.setShohinServiceCd("code6");
entity6.setShohinServiceName("name6");

shohinServiceList.add(entity1);
shohinServiceList.add(entity4);
shohinServiceList.add(entity5);
shohinServiceList.add(entity6);

form.setShohinService(shohinServiceList);

List<DbEntity> newDb = mergeList(dbList, form);

for(DbEntity dbEntity : newDb){
System.out.print(dbEntity.getKey()+" ");
System.out.print(dbEntity.getShohinServiceCd()+" ");
System.out.print(dbEntity.getCol2()+" ");
System.out.print(dbEntity.getCol3()+" ");
System.out.println(dbEntity.getDelFlg()+" ");
}
}

private static List<DbEntity> mergeList(List<DbEntity> dbList, FormEntity form) {
boolean IfDbisInForm = false;//判断db中的数据是否在form内
for (DbEntity dbItem : dbList) {
IfDbisInForm=false;//flag在每次进循环时都要置为false
//判断key是否相等，若相等才进行处理
if(dbItem.getKey()==form.getKey()) {
for (ShohinServiceEntity formItem : form.getShohinService()) {
//判断db中商品code是否在form中存在，若存在则flag置为0且col2col3进行赋值，若不在则将flag置为1
if(dbItem.getShohinServiceCd().equals(formItem.getShohinServiceCd()) ) {
dbItem.setDelFlg("0");
dbItem.setCol2(form.getCol2());
dbItem.setCol3(form.getCol3());
IfDbisInForm=true;
}
}
if(!IfDbisInForm) {
dbItem.setDelFlg("1");
}
}
}

//将form中存在的数据且db中没有的数据加入到db中
boolean IfFormisInDb = false;//判断form中的数据是否在db内
for (ShohinServiceEntity formItem : form.getShohinService()) {
IfFormisInDb = false;//flag在每次进循环时都要置为false
for (DbEntity dbItem : dbList) {
if(formItem.getShohinServiceCd().equals(dbItem.getShohinServiceCd())) {
IfFormisInDb = true;
}
}
if(!IfFormisInDb) {
DbEntity tempDb = new DbEntity();
tempDb.setKey(form.getKey());
tempDb.setShohinServiceCd(formItem.getShohinServiceCd());
tempDb.setCol2(form.getCol2());
tempDb.setCol3(form.getCol3());
tempDb.setKey("0");
}
}
return dbList;

}
}