RichFaces樹和ArrayList

Question

我正在尋找使用java文件中定義的arrayList填充豐富的樹。 數組列表是一個對象「carVO」的列表（String make，String model，int year） 樹的根是一個字符串「Cars」第二個層次是使第三個模型和最後一個年份。直到現在我已經構建了一個具有根節點和第二級別的樹，我不能再走了。

這是carBB.java類

import java.text.SimpleDateFormat; 
import java.util.ArrayList; 
import java.util.Date; 

import javax.faces.context.FacesContext; 
import javax.servlet.http.HttpServletRequest; 

import org.richfaces.model.TreeNodeImpl; 

public class CarBB { 

private String make; 
private String model; 
private int year; 
private int price; 
private Date registrationDate; 
private ArrayList<Integer> yearList = new ArrayList<Integer>(); 
private ArrayList<CarVO> carList = new ArrayList<CarVO>(); 
private ArrayList<String> makeList = new ArrayList<String>(); 
private String makeSearch; 
private String param=""; 

private TreeNodeImpl<String> carRoot = new TreeNodeImpl<String>(); 
private TreeNodeImpl<String> carNodes = new TreeNodeImpl<String>(); 
int i=0; 



@javax.annotation.PostConstruct 
public void initialize() 
{ 
    try 
    { 
     for (int i=1995;i<2015;i++) 
     { 
      yearList.add(i); 
     } 

     carRoot.setData("Car"); 
     carNodes.addChild(0, carRoot); 

    } 
    catch(Exception e) 
    { 
     e.printStackTrace(); 
    } 
} 


public boolean addNewCar() 
{ 
    CarVO newCar = new CarVO(); 
    newCar.setModel(model.toLowerCase()); 
    newCar.setPrice(price); 
    newCar.setYear(year); 
    newCar.setMake(make.toUpperCase()); 
    newCar.setRegistrationDate(registrationDate); 
    carList.add(newCar); 

    if(!(makeList.contains(make.toUpperCase()))) 
    { 
     makeList.add(make.toUpperCase()); 
     TreeNodeImpl<String> child = new TreeNodeImpl<String>(); 
     child.setData(make.toUpperCase()); 
     carRoot.addChild(i, child); 
     i++; 
    } 
    make=""; 
    price=0; 
    year=0; 
    model=""; 
    registrationDate = null; 
    return true;  
} 

public String getParamMake() { 
    if (getRequestParameter("make") != null) { 
     param = getRequestParameter("make"); 
    } 
    return param; 
} 

public String getParamModel() { 
    if (getRequestParameter("model") != null) { 
     param = getRequestParameter("model"); 
    } 
    return param; 
} 

public String getParamYear() { 
    if (getRequestParameter("year") != null) { 
     param = getRequestParameter("year"); 
    } 
    return param; 
} 
public String getParamPrice() { 
    if (getRequestParameter("price") != null) { 
     param = getRequestParameter("price"); 
    } 
    return param; 
} 
public String getParamReg() { 
    if (getRequestParameter("regDate") != null) { 
     param = getRequestParameter("regDate"); 
    } 
    return param; 
} 

public String getParamView() { 
    if (getRequestParameter("viewOnly") != null) { 
     param = getRequestParameter("viewOnly"); 
    } 
    return param; 
} 

private String getRequestParameter(String name) { 
    return ((HttpServletRequest)FacesContext.getCurrentInstance().getExternalContext().getRequest()).getParameter(name); 
} 

public String welcomeAction(String action) 
{ 
    return action; 
} 

public ArrayList<CarVO> getCarList() { 
    return carList; 
} 


public void setCarList(ArrayList<CarVO> carList) { 
    this.carList = carList; 
} 


public String getMake() { 
    return make; 
} 

public void setMake(String make) { 
    this.make = make; 
} 

public String getModel() { 
    return model; 
} 

public void setModel(String model) { 
    this.model = model; 
} 

public int getYear() { 
    return year; 
} 

public void setYear(int year) { 
    this.year = year; 
} 

public int getPrice() { 
    return price; 
} 

public void setPrice(int price) { 
    this.price = price; 
} 

public Date getRegistrationDate() { 
    return registrationDate; 
} 

public void setRegistrationDate(Date registrationDate) { 
    this.registrationDate = registrationDate; 
} 


public ArrayList<Integer> getYearList() { 
    return yearList; 
} 


public void setYearList(ArrayList<Integer> yearList) { 
    this.yearList = yearList; 
} 

public String getMakeSearch() { 
    return makeSearch; 
} 


public void setMakeSearch(String makeSearch) { 
    this.makeSearch = makeSearch; 
} 

public ArrayList<String> getMakeList() { 
    return makeList; 
} 


public void setMakeList(ArrayList<String> makeList) { 
    this.makeList = makeList; 
} 



public String getParam() { 
    return param; 
} 


public void setParam(String param) { 
    this.param = param; 
} 


public TreeNodeImpl<String> getCarRoot() { 
    return carRoot; 
} 


public void setCarRoot(TreeNodeImpl<String> carRoot) { 
    this.carRoot = carRoot; 
} 


public TreeNodeImpl<String> getCarNodes() { 
    return carNodes; 
} 


public void setCarNodes(TreeNodeImpl<String> carNodes) { 
    this.carNodes = carNodes; 
} 

public Date toDate(String dateStr) 
{ 
    Date date = new Date(); 
    SimpleDateFormat sf = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy"); 
    try 
    { 
     date = sf.parse(dateStr); 
     return date; 
    } 
    catch(Exception e) 
    { 
     e.printStackTrace(); 
    } 
    return null; 
} 
    } 

這是carTree.jsp：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%> 
<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%> 
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%> 
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%> 
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %> 

<html> 
    <head> 
    <title>Tree View</title> 
    </head> 
    <body> 
     <f:view> 
      <h:form id="treeForm"> 
       <rich:panel header="Tree View" > 

      <rich:tree value="#{carBB.carNodes}" var="car"> 
       <rich:treeNode> 
        <h:outputText value="#{car}" /> 
       </rich:treeNode> 
      </rich:tree> 

       </rich:panel> 
      </h:form> 
     </f:view> 
    </body> 
</html> 

Answer 1

請檢查this。它有一個工作樣本。