1、Struts2介紹
2、手動配置Struts2步驟
<1>新建項目
<2>導入所需jar包
<3>配置web.xml
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<4>新建Struts2的配置文件:struts.xml
<5>添加dtd
<6>測試
3、 Struts1與Struts2的區別
<1>配置不同：
Struts1採用的是<servlet>標籤
Struts2採用的是<filter>標籤
<2>攔截不同
Struts1攔截的是*.do
struts2攔截的是*.action
<3>
struts1的action需要繼承action
struts2的action不需要繼承任何類
<4>
struts1的action方法返回值是ActionForward
struts2的action方法返回值是String
<5>
struts1的action中的方法有四個參數，與web是緊耦合
Struts2的action中的方法沒有參數，與web是松耦合
示列代碼：
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>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<package name="mypackage" extends="struts-default">
<action name="studentsava" class="com.action.Savaaction" method="sava">
<result name="success">/sava.jsp</result>
</action>
</package>
</struts>
index.jsp
<body>
<form action="studentsava.action" method="post">
studentName:<input type="text" name="studentName"/><br/>
studentAge:<input type="text" name="studentAge"/><br/>
studentSex:<input type="text" name="studentSex"/><br/>
<input type="submit" value="保存"/>
</form>
</body>
SavaAction.java
package com.action;
public class Savaaction {
private String studentName;
private int studentAge;
private String studentSex;
public String getStudentName() {
return studentName;
}
public void setStudentName(String studentName) {
this.studentName = studentName;
}
public int getStudentAge() {
return studentAge;
}
public void setStudentAge(int studentAge) {
this.studentAge = studentAge;
}
public String getStudentSex() {
return studentSex;
}
public void setStudentSex(String studentSex) {
this.studentSex = studentSex;
}
public Savaaction(String studentName, int studentAge, String studentSex) {
super();
this.studentName = studentName;
this.studentAge = studentAge;
this.studentSex = studentSex;
}
public Savaaction() {
super();
// TODO Auto-generated constructor stub
}
public String sava(){
System.out.println("姓名:"+studentName+" 年齡:"+studentAge+" 性別:"+studentSex);
return "success";
}
}
sava.jsp
<body>
<h1>學生信息</h1>
studentName:${studentName}<br/>
studentAge:${studentAge }<br/>
studentSex:${studentSex }
</body>
<body>
<h1>學生信息</h1>
studentName:${studentName}<br/>
studentAge:${studentAge }<br/>
studentSex:${studentSex }
</body>