先看看設(shè)計(jì)的報(bào)表樣式：

?reportTitle是新添加的一個(gè)參數(shù)，而其他的id和name是通過數(shù)據(jù)源得到的Filed。IReport在設(shè)置參數(shù)的時(shí)候需要先在左邊新建一個(gè)parameter，然后再把該parameter托到右邊的設(shè)計(jì)欄中。

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生成的XML文件為：

    <?xml version="1.0" encoding="UTF-8"?>
<jasperReport xmlns="http://jasperreports.sourceforge.net/jasperreports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://jasperreports.sourceforge.net/jasperreports http://jasperreports.sourceforge.net/xsd/jasperreport.xsd" name="report3" language="groovy" pageWidth="595" pageHeight="842" whenNoDataType="AllSectionsNoDetail" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20">
	<property name="ireport.zoom" value="1.0"/>
	<property name="ireport.x" value="0"/>
	<property name="ireport.y" value="0"/>
	<queryString>
		<![CDATA[select * from t_blog;]]>
	</queryString>
	<field name="id" class="java.lang.Integer"/>
	<field name="content" class="java.lang.String"/>
	<field name="postTime" class="java.sql.Timestamp"/>
	<field name="seenCount" class="java.lang.Integer"/>
	<field name="title" class="java.lang.String"/>
	<field name="blogStore" class="java.lang.Integer"/>
	<field name="owner" class="java.lang.Integer"/>
	<field name="sysCategory" class="java.lang.Integer"/>
	<background>
		<band splitType="Stretch"/>
	</background>
	<title>
		<band height="44" splitType="Stretch">
			<staticText>
				<reportElement x="227" y="12" width="100" height="20" forecolor="#FF0000"/>
				<textElement textAlignment="Center">
					<font size="13" isBold="true"/>
				</textElement>
				<text><![CDATA[標(biāo)題]]></text>
			</staticText>
		</band>
	</title>
	<pageHeader>
		<band height="35" splitType="Stretch">
			<staticText>
				<reportElement x="227" y="15" width="100" height="20" forecolor="#FF0000"/>
				<textElement textAlignment="Center">
					<font size="13" isBold="true"/>
				</textElement>
				<text><![CDATA[頁眉]]></text>
			</staticText>
		</band>
	</pageHeader>
	<columnHeader>
		<band height="40" splitType="Stretch">
			<staticText>
				<reportElement x="70" y="2" width="100" height="20"/>
				<textElement/>
				<text><![CDATA[id]]></text>
			</staticText>
			<staticText>
				<reportElement x="214" y="2" width="100" height="20"/>
				<textElement/>
				<text><![CDATA[title]]></text>
			</staticText>
			<staticText>
				<reportElement x="373" y="2" width="100" height="20"/>
				<textElement/>
				<text><![CDATA[postTime]]></text>
			</staticText>
		</band>
	</columnHeader>
	<detail>
		<band height="81" splitType="Stretch">
			<textField>
				<reportElement x="70" y="24" width="100" height="20"/>
				<textElement/>
				<textFieldExpression><![CDATA[$F{id}]]></textFieldExpression>
			</textField>
			<textField>
				<reportElement x="214" y="25" width="100" height="20"/>
				<textElement/>
				<textFieldExpression><![CDATA[$F{title}]]></textFieldExpression>
			</textField>
			<textField>
				<reportElement x="373" y="26" width="100" height="20"/>
				<textElement/>
				<textFieldExpression><![CDATA[$F{postTime}]]></textFieldExpression>
			</textField>
		</band>
	</detail>
	<columnFooter>
		<band height="40" splitType="Stretch">
			<staticText>
				<reportElement x="227" y="10" width="100" height="20" forecolor="#FF0000"/>
				<textElement textAlignment="Center">
					<font size="13" isBold="true"/>
				</textElement>
				<text><![CDATA[相當(dāng)于表尾]]></text>
			</staticText>
		</band>
	</columnFooter>
	<pageFooter>
		<band height="43" splitType="Stretch">
			<staticText>
				<reportElement x="227" y="13" width="100" height="20" forecolor="#FF0000"/>
				<textElement textAlignment="Center">
					<font size="13" isBold="true"/>
				</textElement>
				<text><![CDATA[頁腳]]></text>
			</staticText>
		</band>
	</pageFooter>
	<summary>
		<band height="41" splitType="Stretch">
			<staticText>
				<reportElement x="227" y="10" width="100" height="20" forecolor="#FF0000"/>
				<textElement textAlignment="Center">
					<font size="13" isBold="true"/>
				</textElement>
				<text><![CDATA[用于存放一些統(tǒng)計(jì)信息的]]></text>
			</staticText>
		</band>
	</summary>
</jasperReport>

  

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JasperReport在生成報(bào)表的時(shí)候可以直接操作jrxml文件，然后通過Java代碼編譯為.jasper文件，也可以直接操作IReport編譯好的.jasper文件，下面就是用的直接操作.jasper文件，注釋掉的是操作jrxml文件的。JasperReport可以把生成的報(bào)表導(dǎo)出為多種格式，下面導(dǎo)出的是普通的HTML。JasperReport在往模版里面設(shè)置參數(shù)值，是提供一個(gè)Map進(jìn)行參數(shù)傳入的。

java代碼：

    import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;

import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperExportManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperReport;

public class Test2 {

	public static void main(String args[]) throws JRException, ClassNotFoundException, SQLException, FileNotFoundException {
		String fileName = "E:\\reports\\report2.jrxml";//直接操作生成的jrxml文件
		JasperReport jasperReport = null;
		JasperPrint jasperPrint = null;
//		jasperReport = JasperCompileManager.compileReport(fileName);//編譯jrxml文件
		InputStream inputStream = new FileInputStream("E:\\reports\\report2.jasper");
		Map<String, Object> parameters = new HashMap<String, Object>();//傳入?yún)?shù)
		parameters.put("reportTitle", "我的第一個(gè)程序");
//		jasperPrint = JasperFillManager.fillReport(jasperReport, parameters, getConnection());
		jasperPrint = JasperFillManager.fillReport(inputStream, parameters, getConnection());
		JasperExportManager.exportReportToHtmlFile(jasperPrint, "first.html");
	}
	
	public static Connection getConnection() throws ClassNotFoundException, SQLException {
		Connection conn = null;
		Class.forName("com.mysql.jdbc.Driver");
		conn = DriverManager.getConnection("jdbc:mysql://localhost/blog", "root", "root");
		return conn;
	}
	
}

  

導(dǎo)出的HTML預(yù)覽界面：

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JasperReport(3)——Java簡單使用IReport生成的文件建立報(bào)表