可以利用java的反射机制
UserDaoImpl.java(底层Dao实现)
/**
* table 表
* fieldName 字段名
* fieldValue 字段值
* desc 顺序或倒序
* descId 用来标识用什么来顺序或倒序
*/
public List selete(String fieldName,String fieldValue,String desc,String table,String descId) {
String hql;
if(fieldName == null&desc==null&descId ==null){
hql="from "+table;
}else if(desc == null&fieldName!=null&descId ==null){
hql="from "+table+" where "+fieldName+" = '"+fieldValue+"'";
}else if(desc==null&fieldName==null&descId!=null){
hql="from "+table+" order by "+ descId;
}else if(desc!=null&fieldName==null&descId!=null){
hql="from "+table+" order by "+ descId +" "+desc;
}else{
hql="from "+table+" where "+fieldName+" = '"+fieldValue+"' order by "+ descId+" "+desc;
}
Query query=session.createQuery(hql);
List list=query.list();
return list;
}
/**
* 修改数据
* @param obj
* @param table
* @param id
* @param array1 String字段名集合
* @param array2 String字段值集合
* @param array3 Integer字段名集合
* @param array4 Integer字段值集合
* @param array5 Date字段名集合
* @param array6 Date字段值集合
* @return
*/
public boolean edit(Object obj,String fieldName,String fieldValue,String table,String[] array1,String[] array2,String[] array3,Integer[] array4,String[] array5,Date[] array6){
String desc = null;
String descId = null;
List list = this.selete(fieldName,fieldValue,desc,table,descId);
for(int i=0;i<list.size();i++){
obj = (Object)list.get(i);
Class model;
try {//这里我利用上了反射机制
model = Class.forName("org.cyxl.ssh.entity."+table);
if(array6==null&array4==null){
for(int j =0;j<array1.length;j++){
Method setMethod = model.getMethod("set"+array1[j],String.class);
setMethod.invoke(obj, array2[j]);
session.save(obj);
session.beginTransaction().commit();
}
}else if(array6==null&array2==null){
for(int j =0;j<array3.length;j++){
Method setMethod = model.getMethod("set"+array3[j],Integer.class);
setMethod.invoke(obj, array4[j]);
session.save(obj);
session.beginTransaction().commit();
}
}else{
for(int j =0;j<array5.length;j++){
Method setMethod = model.getMethod("set"+array5[j],Date.class);
setMethod.invoke(obj, array6[j]);
session.save(obj);
session.beginTransaction().commit();
}
}
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return true;
}