在jasper报告中插入查询 [英] Insert query in jasper reports
本文介绍了在jasper报告中插入查询的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
是否可以在报告生成期间在IReports / jasper报告中执行插入查询?
Is it possible to execute "insert query" in IReports/jasper reports during report generation?
推荐答案
是的,你可以。您可以在要显示报告时执行查询。这是一个适合我的示例。
Yes you can. You can execute the query when you want to display the report. Here is a sample that works for me.
try {
Map parameters = new HashMap();
connectionString ="jdbc:mysql://localhost/myDb", "myUsername", "myPassword"
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(connectionString);
PreparedStatement stmt = conn.prepareStatement(query);
ResultSet rs = stmt.executeQuery();
JRResultSetDataSource rsdt = new JRResultSetDataSource(rs);
JasperPrint jp;
jp = JasperFillManager.fillReport("sourceFileName.jasper", parameters, rsdt);
JasperViewer jv = new JasperViewer(jp, false);
jv.setVisible(true);
} catch (ClassNotFoundException | SQLException | JRException ex) {
ex.printStackTrace();
}
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