第一步：（这一步和其他一样，这里从简）
依旧是新建一个web project，命名为struts2，导入struts2必须的包。在src目录下新建struts.xml，修改web.xml文件。
第二步：
将index.jsp改名为input.jsp（这个不是必须的，事实上也没有必要，此处只是为了便于称呼）。Input.jap的代码如下
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<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
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<%
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String path = request.getContextPath();
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String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
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%>
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<%@ taglib prefix="s" uri="/struts-tags" %>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<base href="<%=basePath%>">
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<title>My JSP ‘index.jsp‘ starting page</title>
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<meta http-equiv="pragma" content="no-cache">
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<meta http-equiv="cache-control" content="no-cache">
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<meta http-equiv="expires" content="0">
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<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
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<meta http-equiv="description" content="This is my page">
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<!--
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<link rel="stylesheet" type="text/css" href="styles.css">
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-->
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</head>
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<body>
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<h1><font color=‘red‘> 请输入坐标，用英文半角逗号隔开</font></h1>
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<s:form action="pointconverter">
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<s:textfield name="point1" label="point1"></s:textfield>
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<s:textfield name="point2" label="point2"></s:textfield>
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<s:textfield name="point3" label="point3"></s:textfield>
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<s:submit name="submit"> </s:submit>
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</s:form>
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</body>
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</html>
该文件有两个要注意的地方
1.使用了struts2的标签库 <%@ taglib prefix="s" uri="/struts-tags" %>
2.f注意form中的action属性
第三步：
在src下新建包com.beam，其中定义point类 point.java 代码如下：
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package com.bean;
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public class Point {
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public int getX() {
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return x;
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}
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public void setX(int x) {
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this.x = x;
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}
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public int getY() {
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return y;
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}
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public void setY(int y) {
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this.y = y;
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}
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private int x;
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private int y;
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}
Action
在src下新建包com.action
其中新建类PointAction.java 代码如下
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package com.action;
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import com.opensymphony.xwork2.ActionSupport;
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import com.bean.Point;
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public class PointAction extends ActionSupport
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{
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public Point getPoint1() {
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return point1;
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}
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public void setPoint1(Point point1) {
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this.point1 = point1;
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}
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public Point getPoint2() {
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return point2;
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}
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public void setPoint2(Point point2) {
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this.point2 = point2;
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}
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public Point getPoint3() {
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return point3;
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}
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public void setPoint3(Point point3) {
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this.point3 = point3;
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}
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public String execute() throws Exception
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{
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return SUCCESS;
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}
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private Point point1;
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private Point point2;
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private Point point3;
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}
第五步：配置struts.xml文件 代码如下：
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<?xml version="1.0" encoding="utf-8" ?>
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<!DOCTYPE struts PUBLIC
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"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
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"struts.apache.org/dtds/struts-2.0.dtd">
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<struts>
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<package name="struts2" extends="struts-default">
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<action name="pointconverter" class="com.action.PointAction">
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<result name="success">/output.jsp</result>
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<result name="input">/input.jsp</result>
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</action>
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</package>
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</struts>
第六步：
在WebRoot下新建视图output.jsp 依旧运用struts2的标签库 代码如下
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<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
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<%
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String path = request.getContextPath();
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String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
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%>
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<%@ taglib prefix="s" uri="/struts-tags" %>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<base href="<%=basePath%>">
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<title>My JSP ‘output.jsp‘ starting page</title>
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<meta http-equiv="pragma" content="no-cache">
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<meta http-equiv="cache-control" content="no-cache">
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<meta http-equiv="expires" content="0">
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<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
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<meta http-equiv="description" content="This is my page">
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<!--
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<link rel="stylesheet" type="text/css" href="styles.css">
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-->
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</head>
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<body>
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point1：<s:property value="point1"/><br>
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point2: <s:property value="point2"/><br>
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point3 <s:property value="point3"/>
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</body>
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</html>
第七步：类型转化器
在src目录下新建com.converter包 其中新建类PointConverter.java 代码如下
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package com.converter;
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import java.util.Map;
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import org.apache.struts2.util.StrutsTypeConverter;
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import com.bean.Point;
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public class PointConverter extends StrutsTypeConverter {
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@Override
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public Object convertFromString(Map arg0, String[] arg1, Class arg2) {
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Point point = new Point();
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String[] values= arg1[0].split(",");
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int x = Integer.parseInt( values[0].trim() );
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int y = Integer.parseInt( values[1].trim() );
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point.setX(x);
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point.setY(y);
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return point;
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}
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@Override
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public String convertToString(Map arg0, Object arg1) {
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Point point = (Point) arg1;
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int x = point.getX();
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int y = point.getY();
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String result = "<x= "+x+" , y="+y+" >";
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return result;
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}
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}
第八步：
使类型转化器和action中的对应point属性关联起来新建一个properties文件
这里有两种方法：
第一种是在com.converter包中新建一个PointAction-conversion.properties文件
代码如下：
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point1=com.converter.PointConverter
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point2=com.converter.PointConverter
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point3=com.converter.PointConverter
第二种：是在src目录下直接新建一个文件 xwork-conversion.properties
代码如下
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com.bean.Point=com.converter.PointConverter
okstruts中的类型转换(2),布布扣,bubuko.com
struts中的类型转换(2)
原文：http://blog.csdn.net/estelle_belle/article/details/31389899
