JTable中的ResultSet

如何在JTable中显示ResultSet。 我正在使用此代码

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"); System.out.println(cell[i][0]); //ItemGroup = rset1.getString( "Status"); } System.out.println(ItemCode); JTable jt = new JTable( cell[i], headers); 

但我只得到一行最后插入数据库。

Answer 1

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 } 

Answer 2

您列出的代码不完整/不可理解，但下面的代码显示了如何使用任意数量的列获取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 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); }