Struts 1 学习笔记-4-1（Struts动态表单的测试以及上传文件的应用）

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一.使用Struts的动态表单可以免去再编写一个ActionForm的步骤，在有些地方比较适合使用

1.首先编写一个简单的前台输入界面index.jsp：

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>

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

<html>

<head>

</head>

<body>

<h1>测试ActionForm</h1>

<hr>

<li>测试Struts动态表单</li><br>

Name : <input type="text" name="name"><br>

Age : <input type="text" name="age"><br>

</form>

</body>

</html>

2.编写Struts-config.xml（注意form-bean中type的路径，以及form-property的配置）：

<?xml version="1.0" encoding="ISO-8859-1" ?>

<!DOCTYPE struts-config PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"

"http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">

<struts-config>

<form-beans>

<form-bean name="dynaticActionForm" type="org.apache.struts.action.DynaActionForm">

<form-property name="name" type="java.lang.String"></form-property>

<form-property name="age" type="java.lang.Integer"></form-property>

</form-bean>

</form-beans>

<action-mappings>

</action>

</action-mappings>

<message-resources parameter="MessageResources" />

</struts-config>

3.DynaticActionFormTestAction.java：（注意其中的数据在取出是要进行相应的格式转换）

package com.codedestiny.struts;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.DynaActionForm;

public class DynaticActionFormTestAction extends Action {

public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

DynaActionForm daf = (DynaActionForm)form;

String name = (String)daf.get("name");

int age = (Integer)daf.get("age");

System.out.println("Name : " + name);

System.out.println("age : " + age);

return mapping.findForward("success");

}

二.Struts的文件上传的测试：

注意：在Struts中file的类型为FormFIle，这一点要切记。还有form的提交方式要为post，enctype="multipart/form-data"

1.index.jsp：

<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>

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

<html>

<head>

</head>

<body>

<h1>测试ActionForm</h1>

<hr>

<li>测试Struts动态表单</li><br>

Name : <input type="text" name="name"><br>

Age : <input type="text" name="age"><br>

</form>

<hr>

<li>测试Struts文件上传</li><br>

</form>

</body>

</html>

2.编写ActionForm ： UploadActionForm.java

package com.codedestiny.struts;

import org.apache.struts.action.ActionForm;

import org.apache.struts.upload.FormFile;

public class UploadActionForm extends ActionForm {

private FormFile myFile; // the type of file must be FormFile

private String title;

public FormFile getMyFile() {

return myFile;

}

public void setMyFile(FormFile myFile) {

this.myFile = myFile;

}

public String getTitle() {

return title;

}

public void setTitle(String title) {

this.title = title;

}

3.UploadAction.java：

package com.codedestiny.struts;

import java.io.FileOutputStream;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.upload.FormFile;

public class UploadAction extends Action {

public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

UploadActionForm uaf = (UploadActionForm)form;

FormFile myFile = uaf.getMyFile();

String title = uaf.getTitle();

System.out.println("Title : " + title);

if(myFile != null) {

System.out.println("MyFile : " + myFile.getFileName());

FileOutputStream fos = new FileOutputStream("c:/" + myFile.getFileName());

fos.write(myFile.getFileData());

fos.flush();

fos.close();

}

return mapping.findForward("success");

}

4.struts-config.xml：

<?xml version="1.0" encoding="ISO-8859-1" ?>

<!DOCTYPE struts-config PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"

"http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">

<struts-config>

<form-beans>

<form-bean name="dynaticActionForm" type="org.apache.struts.action.DynaActionForm">

<form-property name="name" type="java.lang.String"></form-property>

<form-property name="age" type="java.lang.Integer"></form-property>

</form-bean>

<form-bean name="uploadActionForm" type="com.codedestiny.struts.UploadActionForm">

</form-bean>

</form-beans>

<action-mappings>

</action>

</action>

</action-mappings>

<message-resources parameter="MessageResources" />

</struts-config>