我应该首先告诉它,这不是关于渲染表格单元格.
这是我正在使用基于我的数据库中的User对象的2D数组构建的TableModel.
List<User> userList = userManagerService.getAllUsers();
/* String[] col_user = {"Username","Name","Phone",.... } */
String[][] data = new String[userList.size()][col_user.length];
int i = 0;
for (User user : userList) {
String[] userdata = new String[col_user.length];
userdata[0] = user.getUserUsername();
userdata[1] = user.getUserName();
userdata[2] = user.getUserPhone();
userdata[3] = user.getUserNic();
userdata[4] = user.getUserAddress();
userdata[5] = user.getUserEmail();
data[i++] = userdata;
}
VstTableItemmodel tiModel = new VstTableItemmodel(data,col_user);
dataTable.setModel(tiModel);
我的问题是如何使用表中的选定行返回User对象.请注意,我无法创建新的User对象并使用行数据填充它.我必须获取查询的User对象(userList中的对象).那么,他们用表格行设置对象的方法是什么？
这是我的VstTableItemmodel类.
public class VstTableItemmodel extends AbstractTableModel {
ArrayList<Object[]> data;
String[] header;
public VstTableItemmodel(Object[][] obj,String[] header) {
this.header = header;
data = new ArrayList<Object[]>();
for (int i = 0; i < obj.length; ++i) {
data.add(obj[i]);
}
}
@Override
public int getRowCount() {
return data.size();
}
@Override
public int getColumnCount() {
return header.length;
}
@Override
public Object getValueAt(int rowIndex,int columnIndex) {
return data.get(rowIndex)[columnIndex];
}
@Override
public String getColumnName(int index) {
return header[index];
}
}
解决方法
在创建模型之前,不要将User对象拆分,而是将其直接添加到模型中,并允许模型为您完成工作…
例如
public class VstTableItemmodel extends AbstractTableModel {
private List<User> users;
public VstTableItemmodel(List<User> users) {
this.users = new ArrayList<User>(users);
}
@Override
public int getRowCount() {
return users.size();
}
@Override
public int getColumnCount() {
return 6;
}
@Override
public Object getValueAt(int rowIndex,int columnIndex) {
Object value = "??";
User user = users.get(rowIndex);
switch (columnIndex) {
case 0:
value = user.getUserUsername();
break;
case 1:
value = user.getUserName();
break;
case 2:
value = user.getUserPhone();
break;
case 3:
value = user.getUserNic();
break;
case 4:
value = user.getUserAddress();
break;
case 5:
value = user.getUserEmail();
break;
}
return value;
}
@Override
public Class<?> getColumnClass(int columnIndex) {
return // Return the class that best represents the column...
}
/* Override this if you want the values to be editable...
@Override
public void setValueAt(Object aValue,int rowIndex,int columnIndex) {
//....
}
*/
/**
* This will return the user at the specified row...
* @param row
* @return
*/
public User getUserAt(int row) {
return users.get(row);
}
}
这样,你应该可以做类似……
List<User> userList = userManagerService.getAllUsers(); VstTableItemmodel tiModel = new VstTableItemmodel(userList);
现在,当您需要…时,您可以获取代表特定行的用户…
User user = tiModel.getUserAt(rowIndex);