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

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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

<?xmlversion="1.0"encoding="UTF-8"?>

<web-appversion="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-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+"/";

<!DOCTYPEHTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<basehref="<%=basePath%>">

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

<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="This is my page">

<!--

-->

</head>

<body>

用户登录

<formaction="login.do"name="userform"id="userform">

用户姓名：<inputtype="text"name="userName"id="uname"/>

<br/>

用户密码：<inputtype="password"name="userPwd"id = "pwd"/>

<br/>

<inputtype="submit"value="用户登录"/>

</form>

</body>

</html>

登录跳转需经过struts配置文件

Struts.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPEstruts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd">

<packagename="loginpackage"extends="struts-default">

<actionname="login"class="com.softeee.action.LoginAction">

<resultname="success">success.jsp</result>

</action>

</package>

<includefile="book.xml"></include>

<includefile="auth.xml"></include>

<includefile="commoper.xml"></include>

</struts>

Book.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPEstruts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd">

<packagename="bookpackage"extends="struts-default">

<actionname="search"class="com.softeee.action.BookOperAction"method="searchBook">

<resultname="success">booklist.jsp</result>

</action>

<actionname="delete"class="com.softeee.action.BookOperAction"method="delBook">

<resultname="success">booklist.jsp</result>

</action>

<actionname="update"class="com.softeee.action.BookOperAction"method="updateBook">

<resultname="success">bookUpdate.jsp</result>

</action>

<actionname="upBook"class="com.softeee.action.BookOperAction"method="upBook">

<resultname="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 ActionSupportimplements SessionAware{

Map session;

//用户姓名

private StringuserName;

//用户密码

private StringuserPwd;

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);

returnSUCCESS;

}

public String getUserName() {

returnuserName;

}

public void setUserName(String userName) {

this.userName = userName;

}

public String getUserPwd() {

returnuserPwd;

}

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+"/";

<!DOCTYPEHTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<basehref="<%=basePath%>">

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

<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="This is my page">

<!--

-->

</head>

<body>

查询书本信息

<formaction="search.do"name="searchform"id="searchform">

书名：<inputtype="text"name="book.bookName"id="bookName">

<inputtype="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 StringbookName;

public int getBookId() {

returnbookId;

}

public void setBookId(int bookId) {

this.bookId = bookId;

}

public String getBookName() {

returnbookName;

}

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 Bookbook;

private List<Book>bookList;

public List<Book> getBookList() {

returnbookList;

}

public void setBookList(List<Book> bookList) {

this.bookList = bookList;

}

public Book getBook() {

returnbook;

}

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(

),下面这种方式是对bookname进行封装成book对象，即

（

）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

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPEstruts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd">

<packagename="useroperpackage"extends="struts-default">

<actionname="*user"class="com.softeee.action.UserOperAction"method="{1}user">(“1”代表第一个“*”)

<resultname="success">{1}user.jsp</result>

</action>

</package>

</struts>

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