如何将一个List对象传递给皕杰报表在页面展示

1.创建List对象，访问皕杰报表

List list = systemService.find(hql); //查询结果集，放到list对象中

request.getSession().setAttribute("list", list);//结果集放到session容器中，
注意：为啥将结果集放到session容器，而不放入request对象中？查询的结果集过多，涉及到翻页，使用request对象，翻页后不能获得list对象中的内容。

request.getRequestDispatcher("/ReportEmitter?rpt=contractState.brt").forward(request, response);
2.继承ContractStateDataSet，将结果集放到报表中
 package bios.report.user.dev.demo.dataset;

 

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import java.util.Set;

 

import javax.servlet.http.HttpSession;

 

import bios.report.engine.api.CustomDataSet;

import bios.report.engine.api.UserContext;

 

import com.dhcc.itsm.document.model.Contract;

import com.dhcc.itsm.document.model.ContractPay;

import com.dhcc.itsm.document.model.ContractSettlement;

 

/**

 * @author dhcc

 */

public class ContractStateDataSet implements CustomDataSet{

 

private String[] metaData;

private List<Contract> conList = new ArrayList<Contract>();

@SuppressWarnings("unchecked")

private List data;

 

public String[] getMetaData() {

return metaData;

}

 

public int getRowCount() {

return data.size();

}

 

public Object[] getRowData(int rowIndex) {

return (Object[])data.get(rowIndex);

}

 

@SuppressWarnings("unchecked")

public void applyParams(Object[] arg0) {

HttpSession req = UserContext.getCurrentUserContext().getRequest().getSession();

conList = (List<Contract>) req.getAttribute("list");

metaData = new String[]{"合同名称","合同金额","结算日期","结算金额","结算合计","付款日期","付款金额","付款合计","施工单位"};

data = new ArrayList();

try {

if(conList != null && !conList.isEmpty()){

for(int i=0;i<conList.size();i++){

Contract con = conList.get(i);

String[] settleStr = getSettle(con.getSettleSet());//结款信息放到字符串中

String[] payStr = getPay(con.getPaySet()); //付款信息放到字符串中

data.add(new Object[]{con.getContractName(),con.getMoney(),settleStr[0],settleStr[1],

Double.parseDouble(settleStr[2]),payStr[0],payStr[1],Double.parseDouble(payStr[2]),con.getYiFang()});

}

}

} catch (Exception e) {

e.printStackTrace();

}

}

 

public List<Contract> getConList() {

return conList;

}

 

public void setConList(List<Contract> conList) {

this.conList = conList;

}

 

/**

 * 结款信息放到放到字符串中

 * @param settleList

 * @return

 */

@SuppressWarnings("unchecked")

private String[] getSettle(Set<ContractSettlement> settleSet){

String[] settleStr = new String[3];

String settleTemp = "\n";//结算日期

String moneyStr ="\n";//结算金额

double settleSum = 0;//结款总金额

if(settleSet != null && !settleSet.isEmpty()){

Iterator it = settleSet.iterator();

while(it.hasNext()){

ContractSettlement settle = (ContractSettlement) it.next();

settleTemp += settle.getBalanceDate() +"\n\n";

moneyStr += settle.getMoney()+"\n\n";

settleSum +=Double.parseDouble(settle.getMoney());

}

}

settleStr[0]=settleTemp;

settleStr[1]=moneyStr;

settleStr[2]=String.valueOf(settleSum);

return settleStr;

}

 

/**

 * 付款信息放到放到字符串中

 * @param settleList

 * @return

 */

@SuppressWarnings("unchecked")

private String[] getPay(Set<ContractPay> paySet){

String[] payStr = new String[3];

String payTemp = "\n";//

String moneyStr ="\n";

double paySum = 0;//付款总金额

if(paySet != null && !paySet.isEmpty()){

Iterator it = paySet.iterator();

while(it.hasNext()){

ContractPay pay = (ContractPay) it.next();

payTemp += pay.getPayDate() +"\n\n";

moneyStr += pay.getMoney()+"\n\n";

paySum +=Double.parseDouble(pay.getMoney());

}

}

payStr[0]=payTemp;

payStr[1]=moneyStr;

payStr[2]=String.valueOf(paySum);

return payStr;

}

 

}

 

 皕杰报表