📜  报表样式

📅  最后修改于: 2020-11-16 08:05:00             🧑  作者: Mango


JasperReports具有功能 <band height="70"> <line> <reportelement x="0" y="0" width="515" height="1"></reportelement> </line> <textfield isblankwhennull="true" bookmarklevel="1"> <reportelement x="0" y="10" width="515" height="30"></reportelement> <textelement textalignment="Center"> <font size="22"></font> </textelement> <textfieldexpression class="java.lang.String"> </textfieldexpression> <anchornameexpression></anchornameexpression> </textfield> <textfield isblankwhennull="true"> <reportelement x="0" y="40" width="515" height="20"></reportelement> <textelement textalignment="Center"> <font size="10"></font> </textelement> <textfieldexpression class="java.lang.String"> </textfieldexpression> </textfield> </band>

样式模板styles.jrtx的内容如下。将其保存到C:\ tools \ jasperreports-5.0.1 \ test目录。






   

用于填充报告的Java代码保持不变。文件C:\ tools \ jasperreports-5.0.1 \ test \ src \ com \ tutorialspoint \ JasperReportFill.java的内容如下-

package com.tutorialspoint;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperFillManager;
import net.sf.jasperreports.engine.data.JRBeanCollectionDataSource;

public class JasperReportFill {
   @SuppressWarnings("unchecked")
   public static void main(String[] args) {
      String sourceFileName = 
         "C://tools/jasperreports-5.0.1/test/jasper_report_template.jasper";

      DataBeanList DataBeanList = new DataBeanList();
      ArrayList dataList = DataBeanList.getDataBeanList();

      JRBeanCollectionDataSource beanColDataSource = new 
         JRBeanCollectionDataSource(dataList);

      Map parameters = new HashMap();
      /**
       * Passing ReportTitle and Author as parameters
       */
      parameters.put("ReportTitle", "List of Contacts");
      parameters.put("Author", "Prepared By Manisha");

      try {
         JasperFillManager.fillReportToFile(
         sourceFileName, parameters, beanColDataSource);
      } catch (JRException e) {
         e.printStackTrace();
      }
   }
}

POJO文件C:\ tools \ jasperreports-5.0.1 \ test \ src \ com \ tutorialspoint \ DataBean.java的内容如下-

package com.tutorialspoint;

public class DataBean {
   private String name;
   private String country;

   public String getName() {
      return name;
   }

   public void setName(String name) {
      this.name = name;
   }

   public String getCountry() {
      return country;
   }

   public void setCountry(String country) {
      this.country = country;
   }
}

文件C:\ tools \ jasperreports-5.0.1 \ test \ src \ com \ tutorialspoint \ DataBeanList.java的内容如下-

package com.tutorialspoint;

import java.util.ArrayList;

public class DataBeanList {
   public ArrayList getDataBeanList() {
      ArrayList dataBeanList = new ArrayList();

      dataBeanList.add(produce("Manisha", "India"));
      dataBeanList.add(produce("Dennis Ritchie", "USA"));
      dataBeanList.add(produce("V.Anand", "India"));
      dataBeanList.add(produce("Shrinath", "California"));

      return dataBeanList;
   }

   /**
    * This method returns a DataBean object,
    * with name and country set in it.
    */
   private DataBean produce(String name, String country) {
      DataBean dataBean = new DataBean();
      dataBean.setName(name);
      dataBean.setCountry(country);
      
      return dataBean;
   }
}

报告生成

我们将使用常规的ANT构建过程来编译并执行上述文件。文件build.xml的内容(保存在目录C:\ tools \ jasperreports-5.0.1 \ test下)如下所示。

导入文件-baseBuild.xml是从“环境设置”一章中提取的,应与build.xml放在同一目录中。



   
   
   
      
      
         
         
      
        
   
   
   
      
      
         
      
      
      
         
            
               
            
         
         
      
        
   


接下来,让我们打开命令行窗口并转到build.xml所在的目录。最后,将命令ant -Dmain-class = com.tutorialspoint.JasperReportFill (viewFullReport是默认目标)执行为-

C:\tools\jasperreports-5.0.1\test>ant -Dmain-class=com.tutorialspoint.JasperReportFill
Buildfile: C:\tools\jasperreports-5.0.1\test\build.xml

clean-sample:
   [delete] Deleting directory C:\tools\jasperreports-5.0.1\test\classes
   [delete] Deleting: C:\tools\jasperreports-5.0.1\test\jasper_report_template.jasper
   [delete] Deleting: C:\tools\jasperreports-5.0.1\test\jasper_report_template.jrprint

compile:
   [mkdir] Created dir: C:\tools\jasperreports-5.0.1\test\classes
   [javac] C:\tools\jasperreports-5.0.1\test\baseBuild.xml:28: warning:
   'includeantruntime' was not set, defaulting to build.sysclasspath=last;
   set to false for repeatable builds
   [javac] Compiling 3 source files to C:\tools\jasperreports-5.0.1\test\classes

compilereportdesing:
   [jrc] Compiling 1 report design files.
   [jrc] log4j:WARN No appenders could be found for logger
   (net.sf.jasperreports.engine.xml.JRXmlDigesterFactory).
   [jrc] log4j:WARN Please initialize the log4j system properly.
   [jrc] log4j:WARN See
   http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
   [jrc] File : C:\tools\jasperreports-5.0.1\test\jasper_report_template.jrxml ... OK.

run:
   [echo] Runnin class : com.tutorialspoint.JasperReportFill
   [java] log4j:WARN No appenders could be found for logger
   (net.sf.jasperreports.extensions.ExtensionsEnvironment).
   [java] log4j:WARN Please initialize the log4j system properly.

viewFillReport:
   [java] log4j:WARN No appenders could be found for logger
   (net.sf.jasperreports.extensions.ExtensionsEnvironment).
   [java] log4j:WARN Please initialize the log4j system properly.

经过上述编译,JasperViewer窗口打开,如下图所示:

Jasper报表样式示例

在这里,我们可以看到字体的颜色变为偶数计数(在列国家/地区)为蓝色。在列名中,字体颜色更改为绿色(此样式从样式模板中引用)。