public static final int ROW_HEIGHT = 20;
public static final int HEADER_HEIGHT = 40; public JFreeReport getReport(String[] columnNames) {
JFreeReport report = new JFreeReport();
report.setName("Report Name");
PageDefinition pd = report.getPageDefinition();
float pageWidth = pd.getWidth();以上是出错的代码,关键现在出错在JFreeReport report = new JFreeReport();在这一句,为什么构造一个对象的时候会出错?
出错信息:
exception javax.servlet.ServletException: Servlet execution threw an exception
root cause java.lang.NoSuchMethodError: org.jfree.base.log.DefaultLog.installDefaultLog()V
org.jfree.report.JFreeReportBoot.getInstance(JFreeReportBoot.java:232)
org.jfree.report.JFreeReport.<init>(JFreeReport.java:157)
demo.Test.getReport(Test.java:25)
demo.ReportServlet.doGet(ReportServlet.java:43)
demo.ReportServlet.doPost(ReportServlet.java:60)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
麻烦各位大虾帮忙看看 这个错是什么错?小弟实在迷茫,万分感谢
public static final int HEADER_HEIGHT = 40; public JFreeReport getReport(String[] columnNames) {
JFreeReport report = new JFreeReport();
report.setName("Report Name");
PageDefinition pd = report.getPageDefinition();
float pageWidth = pd.getWidth();以上是出错的代码,关键现在出错在JFreeReport report = new JFreeReport();在这一句,为什么构造一个对象的时候会出错?
出错信息:
exception javax.servlet.ServletException: Servlet execution threw an exception
root cause java.lang.NoSuchMethodError: org.jfree.base.log.DefaultLog.installDefaultLog()V
org.jfree.report.JFreeReportBoot.getInstance(JFreeReportBoot.java:232)
org.jfree.report.JFreeReport.<init>(JFreeReport.java:157)
demo.Test.getReport(Test.java:25)
demo.ReportServlet.doGet(ReportServlet.java:43)
demo.ReportServlet.doPost(ReportServlet.java:60)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
麻烦各位大虾帮忙看看 这个错是什么错?小弟实在迷茫,万分感谢
没有这个方法啊!
org.jfree.chart
org.jfree.chart.annotations
org.jfree.chart.axis
org.jfree.chart.block
org.jfree.chart.demo
org.jfree.chart.editor
org.jfree.chart.encoders
org.jfree.chart.entity
org.jfree.chart.event
org.jfree.chart.imagemap
org.jfree.chart.labels
org.jfree.chart.needle
org.jfree.chart.plot
org.jfree.chart.plot.dial
org.jfree.chart.renderer
org.jfree.chart.renderer.category
org.jfree.chart.renderer.xy
org.jfree.chart.resources
org.jfree.chart.servlet
org.jfree.chart.title
org.jfree.chart.urls
org.jfree.chart.util
org.jfree.data
org.jfree.data.category
org.jfree.data.contour
org.jfree.data.function
org.jfree.data.gantt
org.jfree.data.general
org.jfree.data.io
org.jfree.data.jdbc
org.jfree.data.resources
org.jfree.data.statistics
org.jfree.data.time
org.jfree.data.time.ohlc
org.jfree.data.xml
org.jfree.data.xy 只有这几个包啊!!
你重新下一个jar试试