JasperReport 简单使用(数据库源为数据库)

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一 创建数据库数据源

 

 

 
 二 创建Report模板

1. 文件 -> 新建

2. 编辑SQL

 

3. 创建元素

 

三 生成报表

jasperreport.datasource.ConnectionProvider.java

package jasperreport.datasource;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class ConnectionProvider {
	private static String driverClassName ="com.mysql.jdbc.Driver";
	private static String username="root";
	private static String password="root";
	private static String url="jdbc:mysql://localhost/mysql";
	
	static{
		try {
			Class.forName(driverClassName);
		} catch (ClassNotFoundException e) {
			throw new RuntimeException(e);
		}
	}
	
	public static Connection getConnection(){
		try {
			return DriverManager.getConnection(url, username, password);
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}
	}
}

 

jasperreport.datasource.JasperReportWithDatasource.java

package jasperreport.datasource;

import java.io.InputStream;
import java.sql.Connection;
import java.util.HashMap;
import java.util.Map;

import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.export.JRTextExporter;
import net.sf.jasperreports.engine.export.JRTextExporterParameter;

public class JasperReportWithDatasource {
	public static void export() throws Exception{
		
		InputStream inputStream = JasperReportWithDatasource.class.getResourceAsStream("DBReport.jasper");
		Map parameters = new HashMap();
		Connection connection = ConnectionProvider.getConnection();
		JasperPrint jasperPrint = JasperFillManager.fillReport(inputStream, parameters, connection);
		
		
		JRTextExporter exporter = new JRTextExporter();
		
        exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);  
        exporter.setParameter(JRExporterParameter.OUTPUT_FILE_NAME, "db.txt");  
        exporter.setParameter(JRTextExporterParameter.PAGE_WIDTH, 200);  
        exporter.setParameter(JRTextExporterParameter.PAGE_HEIGHT, 100);  
		exporter.exportReport();
	}
	
	public static void main(String[] args) throws Exception{
		export();
	}
}

 

pom.xml

	4.0.0
	JasperReport
	JasperReport
	0.0.1-SNAPSHOT

	
		
			net.sf.jasperreports
			jasperreports
			3.7.2
		
		
		
			org.codehaus.groovy
			groovy-all
			1.7.5
		
		
		
			mysql
			mysql-connector-java
			5.1.13
		
	

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