使用Webwork OGNL案例

最新推荐文章于 2024-09-14 07:16:07 发布

daryl715

最新推荐文章于 2024-09-14 07:16:07 发布

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分类专栏：经验技巧之Webwork 文章标签： webwork iterator import integer session action

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编写javaBean:

package ch8;

import java.util.List;

import java.util.Map;

import java.util.Set;

public class Student {

private String name;

private boolean man;

private Classroom classroom;

private List book;

private Map food;

private Set tools;

public List getBook() {

return book;

}

public void setBook(List book) {

this.book = book;

}

public Classroom getClassroom() {

return classroom;

}

public void setClassroom(Classroom classroom) {

this.classroom = classroom;

}

public Map getFood() {

return food;

}

public void setFood(Map food) {

this.food = food;

}

public boolean isMan() {

return man;

}

public void setMan(boolean man) {

this.man = man;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public Set getTools() {

return tools;

}

public void setTools(Set tools) {

this.tools = tools;

}

package ch8;

public class Classroom {

private int number;

private String classname;

public String getClassname() {

return classname;

}

public void setClassname(String classname) {

this.classname = classname;

}

public int getNumber() {

return number;

}

public void setNumber(int number) {

this.number = number;

}

Action:

package ch8;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.HashSet;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Set;

import javax.servlet.http.HttpServletRequest;

import com.opensymphony.webwork.interceptor.ServletRequestAware;

import com.opensymphony.webwork.interceptor.SessionAware;

import com.opensymphony.xwork.ActionSupport;

public class TestOGNL extends ActionSupport implements SessionAware,ServletRequestAware {

private List members=new ArrayList();

private String type;

HttpServletRequest request=null;

Map session=null;

public void setSession(Map session) {

this.session=session;

//或者HttpServletRequest request=ActionContext.getContext().get(ServletActionContext.HTTP_REQUEST);

}

public void setServletRequest(HttpServletRequest request) {

this.request=request;

}

public List getMembers() {

return members;

}

public void setMembers(List members) {

this.members = members;

}

public String getType() {

return type;

}

public void setType(String type) {

this.type = type;

}

public TestOGNL(){

//构造测试数据

members.add(new Integer(1));

members.add(new Integer(2));

members.add(new Integer(3));

type="webwork";

}

public String execute() throws Exception {

// 构造测试数据

Classroom classroom=new Classroom();

classroom.setClassname("javeEE");

classroom.setNumber(22);

Student stu=new Student();

stu.setName("gaoxiang");

stu.setClassroom(classroom);

stu.setMan(true);

List books=new ArrayList();

books.add("j2se");

books.add("j2ee");

books.add("j2me");

stu.setBook(books);

Map foods=new HashMap();

foods.put("1", "apple");

foods.put("2", "orange");

stu.setFood(foods);

Set tools=new HashSet();

tools.add("bomb");

tools.add("rocket");

tools.add("wood");

stu.setTools(tools);

request.setAttribute("student", stu);

session.put("student", stu);

return SUCCESS;

}

xwork.xml

< action name ="testOGNL" class ="ch8.TestOGNL" >

< result name ="success" > /ch8/list-students.jsp </ result >

</ action >

JSP:

<% @ page language="java" contentType="text/html; charset=GB18030"

pageEncoding="GB18030" %>

<! DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd" >

< html >

< head >

<% @ taglib uri="webwork" prefix="ww" %>

< meta http-equiv ="Content-Type" content ="text/html; charset=GB18030" >

< title > Insert title here </ title >

</ head >

< body >

从Action中得到的数据

type: < ww:property value ="type" />

members:

< ww:iterator value ="members" status ="status" >

< ww:property value ="members.get(#status.Index)" />

</ ww:iterator >

从request中得到的数据

Student name: < ww:property value ="#request.student.name" />

Student is man: < ww:property value ="#request.student.man" />

Student books:

< ww:iterator value ="#request.student.book" status ="status" >

< ww:property value ="#request.student.book.get(#status.Index)" />

</ ww:iterator >

Student food:

< ww:property value ="#request.student.food.get(" 1")" />

< ww:property value ="#request.student.food.get(" 2")" />

Student classroom;

< ww:property value ="#request.student.classroom.classname" />

< ww:property value ="#request.student.classroom.number" />

Student tools:

不知道该如何去遍历set,我用下面的方式，总是输出set.size()个set中最后的数值

< ww:iterator value ="#request.student.tools.iterator" status ="status" >

< ww:property value ="#request.student.tools.iterator.next" />

</ ww:iterator >

从session中得到的数据和从request中一致，只需要把相应的request换成session

Student name: < ww:property value ="#session.student.name" />

Student is man: < ww:property value ="#session.student.man" />

Student books:

< ww:iterator value ="#session.student.book" status ="status" >

< ww:property value ="#session.student.book.get(#status.Index)" />

</ ww:iterator >

Student classroom;

< ww:property value ="#session.student.classroom.classname" />

< ww:property value ="#session.student.classroom.number" />

Student food:

< ww:property value ="#session.student.food.get(" 1")" />

< ww:property value ="#session.student.food.get(" 2")" />

Student tools:

不知道该如何去遍历set,我用下面的方式，总是输出set.size()个set中最后的数值

< ww:iterator value ="#session.student.tools.iterator" status ="status" >

< ww:property value ="#session.student.tools.iterator.next" />

</ ww:iterator >

</ body >

</ html >

运行结果：

从Action中得到的数据
type:webwork
members: 1 2 3

从request中得到的数据
Student name:gaoxiang
Student is man:true
Student books: j2se j2ee j2me
Student food: apple orange
Student classroom; javeEE 22
Student tools: 不知道该如何去遍历set,我用下面的方式，总是输出set.size()个set中最后的数值 wood wood wood

从session中得到的数据和从request中一致，只需要把相应的request换成session
Student name:gaoxiang
Student is man:true
Student books: j2se j2ee j2me
Student food: apple orange
Student tools: 不知道该如何去遍历set,我用下面的方式，总是输出set.size()个set中最后的数值 wood wood wood