Java JTable中的结果集
如何在JTable中显示结果集。我正在使用这个代码Java JTable中的结果集,java,swing,jdbc,jtable,Java,Swing,Jdbc,Jtable,如何在JTable中显示结果集。我正在使用这个代码 String [] record= new String[ColCount]; for (i=0; i<ColCount; i++) { record[i]=rset1.getString(i+1); } cell[i] = rset1.getString("loginname"); cell[i] = rset1.getString( "role");
String [] record= new
String[ColCount];
for (i=0; i<ColCount; i++)
{
record[i]=rset1.getString(i+1);
}
cell[i] = rset1.getString("loginname");
cell[i] = rset1.getString( "role");
System.out.println(cell[i][0]);
//ItemGroup = rset1.getString( "Status");
}
System.out.println(ItemCode);
JTable jt = new JTable(
cell[i], headers);
String[]记录=新建
字符串[ColCount];
对于(i=0;i您需要在代码周围放置一个while循环来迭代结果集。例如
while(rset1.next())
{
//do something
}
您列出的代码不完整/不可理解,但下面的代码显示了如何获取具有任意列数的ResultSet并在JTable中显示其内容
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.util.ArrayList;
private void viewTable(){
//Perform database query here, which will open a Connection to the database
//Assume we use the above query to populate a ResultSet results
//Get information about the ResultSet
ResultSetMetaData metaData = results.getMetaData();
//Gets the number of columns in results
int columnCount = metaData.getColumnCount();
//Gets the name of each column in results
String[] columnNames = new String[columnCount];
for(int i = 0; i < columnNames.length; i++){
columnNames[i] = metaData.getColumnLabel(i+1);
}
//You can use a String[] to keep track of the rows if you know the #
//# of rows in the ResultSet, this implementation assumes that we don't
//This ArrayList will keep track of each row in results (each row is
//represented by a String[]
ArrayList<String[]> rows = new ArrayList<>();
while(results.next()){
//Fetch each row from the ResultSet, and add to ArrayList of rows
String[] currentRow = new String[columnCount];
for(int i = 0; i < columnCount; i++){
//Again, note that ResultSet column indecies start at 1
currentRow[i] = results.getString(i+1);
}
rows.add(currentRow);
}
//Close Connection to the database here
String[][] rowsArray = new String[rows.size()][columnCount];
rowsArray = rows.toArray(rowsArray);
table = new JTable(rowsArray, columnNames);
}
导入java.sql.ResultSet;
导入java.sql.ResultSetMetaData;
导入java.util.ArrayList;
私有void视图表(){
//在此处执行数据库查询,这将打开到数据库的连接
//假设我们使用上述查询填充ResultSet结果
//获取有关结果集的信息
ResultSetMetaData元数据=results.getMetaData();
//获取结果中的列数
int columnCount=metaData.getColumnCount();
//获取结果中每个列的名称
String[]columnNames=新字符串[columnCount];
for(int i=0;i
也许你可以先取消对代码的注释?你的代码毫无意义。它在很多方面都是错误的,我不得不问你是否是一名程序员。