Jasperreports+jaspersoft studio学习教程（三）- JDBC向导作为数据源填充数据

转载：https://blog.csdn.net/shiyun123zw/article/details/79166889

4.1 在studio工具中可以直接连接数据库，利用sql语句检索。创建数据库，并建表

 

本教程使用mysql5.5+SQLyog工具，若没有安装，请百度自行安装，创建DemoReport数据库，并将user_tab表，注入数据如下：

 

 

4.2 在studio工具中新建JDBC数据源

 

然后Next ，选择 Database JDBC Connection.

 

点击Test 显示 Successful! ，然后Finish!

4.3 新建报表模板

4.3.1 新建报表模板DemoReport3.jrxml,只保留Title Band 和 Detail Band.

4.3.2 模板右键 -> Dataset and QueryDialog

点击OK 后，在outline中生成Field.

4.3.3 将id,user_name等拖入到 Detail 1 Band中设计模板如下：

点击preview ,显示如下：

4.4 在java程序中是用JDBC数据源

4.4.1 在JasperWeb项目中新建一个sevlet，加入mysql-connector-java-5.1.40-bin.jar依赖，并且将jrxml模板文件编译为jasper文件放入项目中。

 

4.4.2 JasperServlet2 的doGet内容：
此地省略，往下看；

4.4.3 启动tomcat，并访问：

我用的项目是Maven项目：

代码详情如下：

pom.xml 

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>JasperReports</groupId>
  <artifactId>JasperReports02</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>JasperReports02 Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    
    <dependency>  
	    <groupId>net.sf.jasperreports</groupId>  
	    <artifactId>jasperreports</artifactId>  
	    <version>5.6.0</version>  
	</dependency> 
	
	
	<dependency>
	    <groupId>mysql</groupId>
	    <artifactId>mysql-connector-java</artifactId>
	    <version>5.1.30</version>
	</dependency>
	
	<!-- 解决中文乱码 -->
	<dependency> 
	    <groupId>com.lowagie</groupId>
	    <artifactId>itextasian</artifactId>
	    <version>1.5.2</version>
	</dependency>
	
	<dependency>
	    <groupId>javax.servlet</groupId>
	    <artifactId>servlet-api</artifactId>
	    <version>2.5</version>
	</dependency>
    
  </dependencies>
  <build>
    <finalName>JasperReports02</finalName>
  </build>
</project>

JasperServletDb.java 

package com.accord.servlet;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.jasperreports.engine.JREmptyDataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRExporterParameter;
import net.sf.jasperreports.engine.JRRuntimeException;
import net.sf.jasperreports.engine.JasperCompileManager;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.JasperPrint;
import net.sf.jasperreports.engine.JasperRunManager;
import net.sf.jasperreports.engine.export.JRHtmlExporter;
import net.sf.jasperreports.engine.export.JRHtmlExporterParameter;

public class JasperServletDb extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    public JasperServletDb() {
        super();
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    	doPost(request, response);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    	ServletContext context = this.getServletConfig().getServletContext(); 	
		try {
			//JasperCompileManager.compileReportToFile("E:/report/DbReport.jrxml");
			JasperCompileManager.compileReportToFile(context.getRealPath("/jasper/DemoReport03.jrxml"));
		} catch (JRException e1) {
			e1.printStackTrace();
		}//编译jrxml文件，生成jasper文件

		File reportFile = new File(context.getRealPath("/jasper/DemoReport03.jasper"));
		if (!reportFile.exists())
			throw new JRRuntimeException("FileWebappReport.jasper "
					+ "not found. The report design must be compiledfirst.");
		String jasperPath = context.getRealPath("/jasper/DemoReport03.jasper");
		PrintWriter out = null;
		try {
			String url = "jdbc:mysql://localhost:3306/db_bank";
            Class.forName("com.mysql.jdbc.Driver");
            Connection conn = DriverManager.getConnection(url, "root", "123456");
            
            FileInputStream isRef = new FileInputStream(reportFile);
    		ServletOutputStream sosRef = response.getOutputStream();
    		try {
    			//JasperRunManager.runReportToPdfStream(isRef, sosRef, null,new JREmptyDataSource());
    			JasperRunManager.runReportToPdfStream(isRef, sosRef, null, conn);
    			response.setContentType("application/pdf");
    		} catch (Exception e) {
    		}finally{
    			sosRef.flush();
    			sosRef.close();
    		}
			/*//通过JasperFillManager工具进行填充报表，生成文件
            JasperPrint jasperPrint = JasperFillManager
            		.fillReport(jasperPath, null,conn);
          //将html输出到浏览器上
            JRHtmlExporter exporter = new JRHtmlExporter();
            response.setCharacterEncoding("UTF-8");
    		out = response.getWriter();
    		exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint);
    		exporter.setParameter(JRExporterParameter.OUTPUT_WRITER, out);
    		exporter.setParameter(JRHtmlExporterParameter.IS_USING_IMAGES_TO_ALIGN, Boolean.FALSE);
    		exporter.exportReport();*/
		} catch (Exception e) {
			e.printStackTrace();
		}finally {
			//out.flush();
			//out.close();
		}
		
		
    }

}

web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <servlet>
  	<servlet-name>JasperServlet</servlet-name>
  	<display-name>JasperServlet</display-name>
  	<description></description>
  	<servlet-class>com.accord.servlet.JasperServlet</servlet-class>
  </servlet>
  <servlet>
  	<servlet-name>JasperServletDb</servlet-name>
  	<display-name>JasperServletDb</display-name>
  	<description></description>
  	<servlet-class>com.accord.servlet.JasperServletDb</servlet-class>
  </servlet>
  <servlet-mapping>
  	<servlet-name>JasperServlet</servlet-name>
  	<url-pattern>/JasperServlet</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
  	<servlet-name>JasperServletDb</servlet-name>
  	<url-pattern>/JasperServletDb</url-pattern>
  </servlet-mapping>
</web-app>

DemoReport03.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- Created with Jaspersoft Studio version 6.6.0.final using JasperReports Library version 6.6.0  -->
<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="DemoReport03" pageWidth="595" pageHeight="842" columnWidth="555" leftMargin="20" rightMargin="20" topMargin="20" bottomMargin="20" uuid="9070203f-ccf8-4d07-b92c-387acc1200a1">
	<property name="com.jaspersoft.studio.data.sql.tables" value=""/>
	<property name="com.jaspersoft.studio.data.defaultdataadapter" value="msql"/>
	<queryString language="SQL">
		<![CDATA[select * from company]]>
	</queryString>
	<field name="Id" class="java.lang.Integer">
		<property name="com.jaspersoft.studio.field.label" value="Id"/>
		<property name="com.jaspersoft.studio.field.tree.path" value="company"/>
	</field>
	<field name="name" class="java.lang.String">
		<property name="com.jaspersoft.studio.field.label" value="name"/>
		<property name="com.jaspersoft.studio.field.tree.path" value="company"/>
	</field>
	<background>
		<band splitType="Stretch"/>
	</background>
	<title>
		<band height="79" splitType="Stretch">
			<staticText>
				<reportElement x="230" y="24" width="100" height="30" uuid="33f7db34-0687-469c-b9fb-69023e73638d"/>
				<textElement>
				   <font fontName="宋体" pdfFontName="STSong-Light" pdfEncoding="UniGB-UCS2-H" isPdfEmbedded="true"/>
				</textElement>
				<text><![CDATA[公司明细表]]></text>
			</staticText>
		</band>
	</title>
	<pageHeader>
		<band height="49" splitType="Stretch">
			<staticText>
				<reportElement x="208" y="10" width="139" height="30" uuid="746bdd39-9f31-4905-a700-91f57aea3cf7"/>
				<textElement>
				   <font fontName="宋体" pdfFontName="STSong-Light" pdfEncoding="UniGB-UCS2-H" isPdfEmbedded="true"/>
				</textElement>
				<text><![CDATA[这是pdf的页眉]]></text>
			</staticText>
		</band>
	</pageHeader>
	<detail>
		<band height="125" splitType="Stretch">
			<textField>
				<reportElement x="130" y="23" width="116" height="20" uuid="f0c3ef36-e052-476f-853c-e94249dac976"/>
				<textElement>
				   <font fontName="宋体" pdfFontName="STSong-Light" pdfEncoding="UniGB-UCS2-H" isPdfEmbedded="true"/>
				</textElement>
				<textFieldExpression><![CDATA[$F{Id}]]></textFieldExpression>
			</textField>
			<textField>
				<reportElement x="247" y="23" width="233" height="20" uuid="b80cb7b0-ce36-4957-934b-fe2a3f8d792b"/>
				<textElement>
				   <font fontName="宋体" pdfFontName="STSong-Light" pdfEncoding="UniGB-UCS2-H" isPdfEmbedded="true"/>
				</textElement>
				<textFieldExpression><![CDATA[$F{name}]]></textFieldExpression>
			</textField>
		</band>
	</detail>
	<pageFooter>
		<band height="54" splitType="Stretch">
			<staticText>
				<reportElement x="213" y="18" width="134" height="30" uuid="b824b8c5-c31d-4d3e-9b4b-c07a26b11061"/>
				<textElement>
				   <font fontName="宋体" pdfFontName="STSong-Light" pdfEncoding="UniGB-UCS2-H" isPdfEmbedded="true"/>
				</textElement>
				<text><![CDATA[这是pdf的页脚]]></text>
			</staticText>
		</band>
	</pageFooter>
</jasperReport>