Struts2，JasperReports，JDBC數據源作報表

struts.xml配置：

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">


<struts>
<!-- 
(1)extends 加入 jasperreports-default
(2)result 加入  type="jasper"
(3)參數使用說明
  location 指經過Ireport生成.jasper文件的路徑
      datasource 若是是javabean source，使用此參數做爲數據源。
      connection 若是是jdbc source，則使用此參數做爲數據源。
      format 生成格式，XLS,HTML.CSV,默認爲PDF
-->
<package name="default" namespace="/"
extends="struts-default,jasperreports-default">
<action name="GeneratePDF" class="com.test.TestAction">
<result name="success" type="jasper">
<param name="location">/jasper/report1.jasper</param>
<param name="connection">conn</param>
<!-- <param name="dataSource">your javabean datasource</param> -->
<param name="format">PDF</param>
</result>
</action>
</package>


</struts>

測試action:TestAction.java 

package com.test;


import java.sql.Connection;


import com.opensymphony.xwork2.ActionSupport;


public class TestAction extends ActionSupport
{
    private static final long serialVersionUID = 8006993549943492955L;
    
    private Connection conn;
    
    @Override
    public String execute()
        throws Exception
    {
        /*
         * 在頁面跳轉以前將Connection賦值
         */
        setConn(DBConnection.getInstance());
        return SUCCESS;
    }
    
    public Connection getConn()
    {
        return conn;
    }
    
    public void setConn(Connection conn)
    {
        this.conn = conn;
    }
    
}

配置一個簡單的數據庫鏈接供JasperReport使用，DBConnection.java

package com.test;


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


/**
 * 用JDBC簡單獲取一個Connection鏈接提供給JasperReport使用
 * @author Klaus_pi
 */
public class DBConnection
{
    private static Connection instance = null;
    
    private DBConnection()
    {
    }
    
    public static Connection getInstance()
        throws InstantiationException, IllegalAccessException, ClassNotFoundException, SQLException
    {
        if (instance == null)
        {
            instance = getConn();
        }
        return instance;
    }
    
    public static Connection getConn()
        throws InstantiationException, IllegalAccessException, ClassNotFoundException, SQLException
    {
        
        String driver = "com.ibm.db2.jcc.DB2Driver";
        String url = "jdbc:db2://192.168.1.66:50000/SAMPLE";
        String userName = "db2admin";
        String passWord = "db2admin";
        
        Connection conn = null;
        Class.forName(driver).newInstance();
        conn = DriverManager.getConnection(url, userName, passWord);
        
        return conn;
    }
}