struts + jasperreporters

package com.pxj.report.pojo;public class Address {    private String city;    private String zipcode;    public String getCity() {        return city;    }    public void setCity(String city) {        this.city = city;    }    public String getZipcode() {        return zipcode;    }    public void setZipcode(String zipcode) {        this.zipcode = zipcode;    }    }package com.pxj.report.pojo;import java.util.HashSet;import java.util.Set;public class Company implements Comparable<Company>{    private String name;    private Address address;    private Set<Staff> staffs = new HashSet<Staff>();        public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public Address getAddress() {        return address;    }    public void setAddress(Address address) {        this.address = address;    }    public Set<Staff> getStaffs() {        return staffs;    }    public void setStaffs(Set<Staff> staffs) {        this.staffs = staffs;    }    public int compareTo(Company o) {        return o.getName().compareTo(this.getName());    }    }package com.pxj.report.pojo;public class Staff {    private String name;    private Company company;    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public Company getCompany() {        return company;    }    public void setCompany(Company company) {        this.company = company;    }    }

package com.pxj.report.action;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import com.opensymphony.xwork2.ActionSupport;import com.pxj.report.pojo.Address;import com.pxj.report.pojo.Company;import com.pxj.report.pojo.Staff;public class DemoAction extends ActionSupport{    private static final long serialVersionUID = 1446363L;        private List<Staff> list;    Map<String,Object> map;        public List<Staff> getList() {        return list;    }    public void setList(List<Staff> list) {        this.list = list;    }    public Map<String, Object> getMap() {        return map;    }    public void setMap(Map<String, Object> map) {        this.map = map;    }    @Override    public String execute() throws Exception {        list = getData();        map = getParameter();        return super.execute();    }    private Map<String, Object> getParameter() {        Map<String,Object> map = new HashMap<String,Object>();        map.put("date", "2014-08-04");        return map;    }    private List<Staff> getData() {        Address addr = new Address();        addr.setCity("重庆");        addr.setZipcode("20140804");                Company company1 = new Company();        company1.setName("天友");        company1.setAddress(addr);        Company company2 = new Company();        company2.setName("谷歌");        company2.setAddress(addr);                Staff staff1 = new Staff();        staff1.setName("张三");        staff1.setCompany(company1);        Staff staff2 = new Staff();        staff2.setName("李四");        staff2.setCompany(company2);        Staff staff3 = new Staff();        staff3.setName("王五");        staff3.setCompany(company1);                List<Staff> list = new ArrayList<Staff>();        list.add(staff1);        list.add(staff2);        list.add(staff3);        return list;    }}

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"><struts>    <package name="project" namespace="/" extends="jasperreports-default">                <action name="viewDemo" class="com.pxj.report.action.DemoAction">            <result name="success" type="jasper"> <!-- 指定类型 -->                <param name="location">/jasper/strust2Demo.jasper</param>  <!-- 指定jasper文件位置 -->                <param name="dataSource">list</param>   <!-- 指定数据源 -->                <param name="format">PDF</param>     <!-- 指定生成格式 -->                <param name="reportParameters">map</param> <!-- 指定传递替换参数 -->            </result>         </action>        </package></struts>