java - 使用 ant 通过 sciptlet 编译 jrxml

Question

我正在尝试使用 ant 编译 jrxml。我已经在 iReports 上创建了 jrxml，所以我没有 build.xml。运行 ant 命令时，它会要求提供 build.xml。我在与 jrxml 相同的目录中创建了此文件，但我不知道应该在其中放入什么内容以将我的 jrxml 链接到我的 scriptlet jar。我会感谢你的帮助，我有点迷失了..

Answer 1

您可以在 net.sf.jasperreports.ant.JRAntCompileTask ant 任务的帮助下编译报告模板。

样本取自here :

<path id="runClasspath">
    <pathelement location="${path_to_jasper_libs}"/>
    <pathelement path="${path_to_scriplet}\scriplet.jar"/>
</path>

<taskdef name="jrc" classname="net.sf.jasperreports.ant.JRAntCompileTask"> 
  <classpath refid="classpath"/>
</taskdef>

<target name="compile1"> 
  <mkdir dir="./build/reports"/> 
  <jrc 
    srcdir="./reports"
    destdir="./build/reports"
    tempdir="./build/reports"
    keepjava="true"
    xmlvalidation="true">
   <classpath refid="runClasspath"/>
   <include name="**/*.jrxml"/>
  </jrc>
</target>

<target name="compile2">
  <mkdir dir="./build/reports"/> 
  <jrc 
    destdir="./build/reports"
    tempdir="./build/reports"
    keepjava="true"
    xmlvalidation="true">
   <src>
    <fileset dir="./reports">
     <include name="**/*.jrxml"/>
    </fileset>
   </src>
   <classpath refid="runClasspath"/>
  </jrc> 
</target> 

来自网站的引用:

In addition to the srcdir and the destdir attributes, the jrc custom Ant task shipped with JasperReports supports the following attributes:

compiler : Name of the class that implements the JRCompiler interface to be used for compiling the reports (optional).

xmlvalidation : Flag to indicate whether the XML validation should be performed on the source report template files (true by default).

tempdir : Location to store the temporarily generated files (the current working directory by default).

keepjava : Flag to indicate if the temporary Java files generated on the fly should be kept and not deleted automatically (false by default).

工作示例:

SampleJRScriptlet 类:

import com.google.common.base.Strings;
import net.sf.jasperreports.engine.JRDefaultScriptlet;

public class SampleJRScriptlet extends JRDefaultScriptlet {

    public String doubleField(String value) {
        return Strings.repeat(value, 2);
    }
}

要编译的报告模板(report_with_scriplet.jrxml 文件):

<jasperReport ... scriptletClass="SampleJRScriptlet">
    <property name="ireport.zoom" value="1.0"/>
    <property name="ireport.x" value="0"/>
    <property name="ireport.y" value="0"/>
    <queryString language="xPath">
        <![CDATA[/Northwind/Customers]]>
    </queryString>
    <field name="CustomerID" class="java.lang.String">
        <fieldDescription><![CDATA[CustomerID]]></fieldDescription>
    </field>
    <field name="CompanyName" class="java.lang.String">
        <fieldDescription><![CDATA[CompanyName]]></fieldDescription>
    </field>
    <field name="ContactName" class="java.lang.String">
        <fieldDescription><![CDATA[ContactName]]></fieldDescription>
    </field>
    <field name="ContactTitle" class="java.lang.String">
        <fieldDescription><![CDATA[ContactTitle]]></fieldDescription>
    </field>
    <detail>
        <band height="20" splitType="Stretch">
            <textField>
                <reportElement x="0" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$P{REPORT_SCRIPTLET}.doubleField("$F{CustomerID}")]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="100" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{CompanyName}]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="200" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{ContactName}]]></textFieldExpression>
            </textField>
            <textField>
                <reportElement x="300" y="0" width="100" height="20"/>
                <textElement/>
                <textFieldExpression><![CDATA[$F{ContactTitle}]]></textFieldExpression>
            </textField>
        </band>
    </detail>
</jasperReport>

我的ant脚本(compile_report.xml文件):

<project default="compile" basedir=".">
    <path id="classpath">
        <fileset dir="./../../target/alternateLocation">
            <include name="jasperreports-4.1.2.jar"/>
            <include name="commons-logging-1.0.2.jar"/>
            <include name="commons-digester-1.7.jar"/>
            <include name="commons-collections-2.1.jar"/>
            <include name="commons-beanutils-1.8.0.jar"/>
            <include name="groovy-all-1.0-jsr-05.jar"/>
        </fileset> 
    </path>

    <path id="runClasspath">
        <path refid="classpath"/> 
        <pathelement path="./../../target/myscriplet.jar"/>
    </path>

    <taskdef name="jrc" classname="net.sf.jasperreports.ant.JRAntCompileTask"> 
        <classpath refid="classpath"/>
    </taskdef>

    <target name="compile">
        <mkdir dir="./compiled_jasper"/> 
        <jrc 
    destdir="./compiled_jasper"
    tempdir="./compiled_jasper"
    keepjava="true"
    xmlvalidation="true">
            <src>
                <fileset dir="./report">
                    <include name="**/*.jrxml"/>
                </fileset>
            </src>
            <classpath refid="runClasspath"/>
        </jrc> 
    </target> 
</project>

文件夹结构:

report
  report_with_scriplet.jrxml
compile_report.xml

运行脚本后文件夹结构将是:

report
  report_with_scriplet.jrxml
compiled_jasper
  report_with_scriplet_1323195663885_780040.groovy
  report_with_scriplet.jasper
compile_report.xml