java - Unable to retrieve value from a JavaBean while generating reports using JasperReports API -


i trying generate simple jr report list.

i keep getting error retrieving field value bean : name

this error comes due wrong getter method-name since jasper uses reflection take fields bean. after correcting getter method-name. keep getting exception. there other problem?

my jrxml file is

<?xml version="1.0" encoding="utf-8" ?> <!doctype jasperreport public  "//jasperreports//dtd report design//en" "http://jasperreports.sourceforge.net/dtds/jasperreport.dtd">  <jasperreport name="simplereport">   <field name="name" class="java.lang.string"/>   <field name="count" class="java.lang.string"/>   <title>         <band height="50">             <statictext>           <reportelement x="0" y="0" width="180" height="15"/>             <textelement/>           <text><![cdata[report]]></text>         </statictext>         </band>     </title>   <pageheader>       <band/>   </pageheader>   <columnheader>         <band height="20">         <statictext>           <reportelement x="180" y="0" width="180" height="20"/>         <textelement>             <font isunderline="true"/>         </textelement>         <text><![cdata[event name]]></text>       </statictext>       <statictext>         <reportelement x="360" y="0" width="180" height="20"/>         <textelement>           <font isunderline="true"/>         </textelement>         <text><![cdata[count]]></text>       </statictext>     </band>   </columnheader>   <detail>     <band height="20">       <textfield>         <reportelement x="180" y="0" width="180" height="15"/>         <textelement/>         <textfieldexpression><![cdata[$f{name}]]></textfieldexpression>       </textfield>       <textfield>         <reportelement x="360" y="0" width="180" height="15"/>         <textelement/>         <textfieldexpression><![cdata[$f{count}]]></textfieldexpression>       </textfield>     </band>   </detail>   <columnfooter>     <band/>   </columnfooter>   <pagefooter>     <band height="15">       <statictext>         <reportelement x="0" y="0" width="40" height="15"/>         <textelement/>         <text><![cdata[page:]]></text>       </statictext>       <textfield>         <reportelement x="40" y="0" width="100" height="15"/>         <textelement/>         <textfieldexpression class="java.lang.integer"><![cdata[$v{page_number}]]></textfieldexpression>       </textfield>     </band>   </pagefooter>   <summary>     <band/>   </summary> </jasperreport>

bean class 

class eventbean {     private string name;     private string count;      public string getname() {         return name;     }     public void setname(string name) {         this.name = name;     }     public string getcount() {         return count;     }     public void setcount(string count) {         this.count = count;     } }  class eventnamelist {     public arraylist<eventbean> getdatabeanlist() {         arraylist<eventbean> list = new arraylist<eventbean>();          list.add(generate("flow", "100"));         list.add(generate("non flow", "300"));         list.add(generate("allow", "600"));         list.add(generate("deny", "50"));          return list;     }      private eventbean generate(string name, string country) {         eventbean bean = new eventbean();         bean.setname(name);         bean.setcount(country);          return bean;     } }

and generating reports here

jaspercompilemanager.compilereporttofile(inpuutjrxml, outputjasper);  eventnamelist list = new eventnamelist(); jrbeancollectiondatasource beanlist = new jrbeancollectiondatasource(list.getdatabeanlist());  jasperprint jasperprint = jasperfillmanager.fillreport(outputjasper, new hashmap(), beanlist);  jasperexportmanager.exportreporttopdfstream(jasperprint, new fileoutputstream(pefoutput));

do need make more modification bean class?

the solution simple - should change access modifier of javabean class public.

like this:

public class eventbean {     private string name;     private string count;      public string getname() {         return name;     }      public void setname(string name) {         this.name = name;     }      public string getcount() {         return count;     }      public void setcount(string count) {         this.count = count;     } }

don't forget using own package.

you can find more information javabean data sources here


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