伙计们!很长一段时间我无法修复异常:java.lang.NoSuchMethodError: com.lowagie.text.pdf.PdfWriter.setRgbTransparencyBlending(Z)V
我已将所有需要的 jar 添加到类路径中:
- commons-beanutils-1.8.0
- commons-collections-2.1.1
- commons-digester-2.1.0
- commons-javaflow-20060411
- 公共日志记录-1.1.1
- 文本 - 2.1.5
- 碧玉报告 - 5.1.0
我在这里看到了 JasperReports 的要求,所以我都需要库,但是,无论如何,我无法修复错误
我的代码:
class ForIReport {
public static void main(String[] args) {
// def conn = Sql.newInstance(
// "jdbc:sqlserver://localhost:1433;databaseName=twitter",
// 'sa',
// 'sunrise123',
// 'com.microsoft.sqlserver.jdbc.SQLServerDriver')
// Class.forName("com.microsoft.jdbc.SQLServerDriver").newInstance();
// Connection conn = DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433", 'sa', 'sunrise123');
def fileName = "C:/Users/avalev/Documents/iReport/First.jasper"
def outFileName = "First.pdf"
HashMap hm = new HashMap()
JasperPrint print = JasperFillManager.fillReport(fileName, hm, new JREmptyDataSource())
JRExporter exporter = new JRPdfExporter()
exporter.setParameter(
JRExporterParameter.OUTPUT_FILE_NAME,
outFileName);
exporter.setParameter(JRExporterParameter.JASPER_PRINT, print)
exporter.exportReport()
println("Created file :" + outFileName)
}
}
和异常描述
log4j:WARN No appenders could be found for logger (net.sf.jasperreports.extensions.ExtensionsEnvironment).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" java.lang.NoSuchMethodError: com.lowagie.text.pdf.PdfWriter.setRgbTransparencyBlending(Z)V
at net.sf.jasperreports.engine.export.JRPdfExporter.exportReportToStream(JRPdfExporter.java:596)
at net.sf.jasperreports.engine.export.JRPdfExporter.exportReport(JRPdfExporter.java:419)
at net.sf.jasperreports.engine.JRExporter$exportReport.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
at ForIReport.main(One.groovy:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
我可以创建 PdfWriter 类的实例(供自己检查)
感谢您的帮助