report.java

实习时做的人事系统

package com.personnel;

import javax.swing.JPanel;
import javax.swing.JFrame;
import java.awt.Dimension;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.awt.Toolkit;
import javax.swing.JOptionPane;
import net.sf.jasperreports.view.*;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JRResultSetDataSource;
import net.sf.jasperreports.engine.JasperCompileManager;
import java.util.Map;
import java.util.HashMap;
import java.sql.ResultSet;
import java.sql.SQLException;

public class Report {

	private static final long serialVersionUID = 1L;

	private DbManager dbManager = new DbManager(DbManager.MYSQL_DRIVER,
			DbManager.MYSQL_URL, "root", "6581502",
			DbManager.TYPE_SCROLL_SENSITIVE, DbManager.CONCUR_UPDATABLE);

	ResultSet rs;

	String sql = new String();
	
	private javax.swing.JFrame parent = null;

	public Report(javax.swing.JFrame parent) {
		this.parent = parent;
	}

	public void showReport(String reportName, String query) {

		this.rs = this.dbManager.executeQuery(query);

		try {
			if (this.rs.first()) {
				this.rs.beforeFirst();
				// 参数列表
				Map parameters = new HashMap();
				// 转换结果集
				JRResultSetDataSource jrDataSource = new JRResultSetDataSource(
						this.rs);
				try {
					JasperCompileManager.compileReportToFile(reportName);
					
					int index = reportName.lastIndexOf(".");
					String asperFile = reportName.substring(0, index)+".jasper";

					// 通过report.jasper报表模版输出报表
					JasperFillManager.fillReportToFile(asperFile,
							parameters, jrDataSource);

					String printFile = reportName.substring(0, index)+".jrprint";
					// 打印预览视图,可以另存为PDF，HTML等格式文件
					JasperViewer view = new JasperViewer(printFile, false,
							false);
					view.setSize(800, 800);
					view.setLocation(parent.getX()+20, parent.getY()+20);
					view.setVisible(true);
				} catch (Exception ex) {
					ex.printStackTrace();
				}
			} else {
				JOptionPane.showMessageDialog(null, "记录为空");
			}
		} catch (SQLException ex) {
			JOptionPane.showMessageDialog(null, "连接数据库失败");
		}
	}

}