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java 从零开始，学习笔记之基础入门<Struts2_实战演练(上)>（三十八)

2014-02-14 09:38 1091 查看

Struts2_实战演练(上)

三个准备：

1.导入Struts2库（jar包）

2.添加核心配置文件struts.xml

3.配置properties文件

准备二，配置struts2核心filter

Web.xml

<?xml
version="1.0"
encoding="UTF-8"?>
<web-app
version="2.5"

    xmlns="http://java.sun.com/xml/ns/javaee"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<filter>
<filter-name>filterDispatcher</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>

<filter-mapping>
<filter-name>filterDispatcher</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

</web-app>

准备三：配置properties文件

struts.properties

struts.action.extension=do

第一个sturts框架

登录框：

Index.jsp

<%@
page language="java"
import="java.util.*"
pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE
HTML PUBLIC
"-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base
href="<%=basePath%>">

    <title>My JSP 'index.jsp' starting page</title>
    <meta
http-equiv="pragma"
content="no-cache">
    <meta
http-equiv="cache-control"
content="no-cache">
    <meta
http-equiv="expires"
content="0">

    <meta
http-equiv="keywords"
content="keyword1,keyword2,keyword3">
    <meta
http-equiv="description"
content="This is my page">
    
</head>

<body>
    用户登录
    <form
action="login.do"
name="userform"
id="userform">
    用户姓名：<input
type="text"
name="userName"
id="uname"/>
    <br/>

    用户密码：<input
type="password"
name="userPwd"
id = "pwd"/>
    <br/>
    <input
type="submit"
value="用户登录"/>
    </form>
</body>
</html>

登录跳转需经过struts配置文件

Struts.xml

Book.xml

<?xml
version="1.0"
encoding="UTF-8"
?>
<!DOCTYPE
struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <package
name="bookpackage"
extends="struts-default">
        <action
name="search"
class="com.softeee.action.BookOperAction"
method="searchBook">
            <result
name="success">booklist.jsp</result>
        </action>

        <action
name="delete"
class="com.softeee.action.BookOperAction"
method="delBook">
            <result
name="success">booklist.jsp</result>
        </action>

        <action
name="update"
class="com.softeee.action.BookOperAction"
method="updateBook">
            <result
name="success">bookUpdate.jsp</result>
        </action>

        
        <action
name="upBook"
class="com.softeee.action.BookOperAction"
method="upBook">
            <result
name="success">bookList.jsp</result>
        </action>
    </package>

</struts>

通过配置文件跳转到LoinAction.java中并找到默认的execute方法

LoginAction.java

package com.softeee.action;

import java.util.Map;

import org.apache.struts2.interceptor.SessionAware;

import com.opensymphony.xwork2.ActionSupport;

public
class LoginAction extends ActionSupport
implements SessionAware{

    Map session;

    //用户姓名
    private String
userName;
    //用户密码
    private String
userPwd;

    public LoginAction() {
        System.out.println("实例化了");
    }

    public String execute()
throws Exception{
        System.out.println("登录的用户名是："+userName+"
密码："+userPwd);
        //session中存入用户信息
        session.put("uname",userName);
        return
SUCCESS;
    }

    public String getUserName() {
        return
userName;
    }
    public
void setUserName(String userName) {
        this.userName = userName;
    }
    public String getUserPwd() {
        return
userPwd;
    }
    public
void setUserPwd(String userPwd) {
        this.userPwd = userPwd;
    }

    public
void setSession(Map<String, Object> arg0) {
        this.session=arg0;
    }

}

搜索书

Search.jsp

<%@
page language="java"
import="java.util.*"
pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE
HTML PUBLIC
"-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base
href="<%=basePath%>">

    <title>My JSP 'searchbook.jsp' starting page</title>

    <meta
http-equiv="pragma"
content="no-cache">
    <meta
http-equiv="cache-control"
content="no-cache">
    <meta
http-equiv="expires"
content="0">

    <meta
http-equiv="keywords"
content="keyword1,keyword2,keyword3">
    <meta
http-equiv="description"
content="This is my page">
    

</head>

<body>
    查询书本信息
    <form
action="search.do"
name="searchform"
id="searchform">
    书名：<input
type="text"
name="book.bookName"
id="bookName">
        <input
type="submit"
value="查询">
    </form>
</body>
</html>

BookOperAction.Java

Book.java

package com.ibm.dto;

public
class Book {
    //书本编号
    private
int bookId;
    //书本名称
    private String
bookName;

    public
int getBookId() {
        return
bookId;
    }
    public
void setBookId(int bookId) {
        this.bookId = bookId;
    }
    public String getBookName() {
        return
bookName;
    }
    public
void setBookName(String bookName) {
        this.bookName = bookName;
    }



}

package com.softeee.action;

import java.util.ArrayList;
import java.util.List;

import com.opensymphony.xwork2.ActionSupport;
import com.ibm.dto.Book;
import com.ibm.factory.HibernateSessionFactory;

public
class BookOperAction extends ActionSupport {

    private Book
book;

    private List<Book>
bookList;

    public List<Book> getBookList() {
        return
bookList;
    }

    public
void setBookList(List<Book> bookList) {
        this.bookList = bookList;
    }

    public Book getBook() {
        return
book;
    }

    public
void setBook(Book book) {
        this.book = book;
    }

    public String searchBook(){
        System.out.println("查询的书名是："+book.getBookName());

        HibernateSessionFactory.getSession();

        //以下部分模拟从数据库中查询书本并存放到list对象中进行传递
        bookList = new ArrayList<Book>();
        for (int i = 0; i < 5; i++) {
            Book book = new Book();
            book.setBookId(i);
            book.setBookName("孙子兵法"+i);
            bookList.add(book);
        }

        return
"success";
    }

    public String delBook(){
        System.out.println("删除的书本的编号是："+book.getBookId());
        //补全删除部分的代码
        return
"success";
    }

    public String updateBook(){
        System.out.println("修改的书本的编号是:"+book.getBookId());
        //伪代码部分
真实应用中从数据库中查询与之对应的结果
        book=new Book();
        book.setBookId(1);
        book.setBookName("货币战争");
        return
"success";
    }

    public String upBook(){
        //调用hibernate的dao完善此部分
        System.out.println("修改部分");
        return
"success";
    }

}

对比第一种取值方式(
<input type="text" name="userName" id="uname"/>
),下面这种方式是对bookname进行封装成book对象，即
（
<input type="text" name="book.bookName" id="bookName">
）在Action中需定义一个Book对象得到bookname值

配置通配符

1．当struts2解析到adduser方法时，就会自动去找user的add方法

2．直接转向到adduser.jsp

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标签： java struts2 学习笔记入门基础

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