1.Converter：
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="converterDemo" extends="struts-default">
<action name="point-*" class="cn.zzsxt.action.MyPointAction" method="{1}">
<result name="success">/success.jsp</result>
</action>
</package>
</struts>
Conversion：
package cn.zzsxt.conversion;
import java.util.Map;
import org.apache.struts2.util.StrutsTypeConverter;
import cn.zzsxt.entity.MyPoint;
public class MyPointConverter extends StrutsTypeConverter {
/**
* 10,20
* 将字符串转换为复合类型
* context:上下文
* values:参数的值
* toType：目标类型
*/
@Override
public Object convertFromString(Map context, String[] values, Class toType) {
if(toType==MyPoint.class){
String value = values[0];//获取坐标的值: 10,20
String[] arr = value.split(",");//arr = {"10,20"}
//获取x坐标的值
int x = Integer.parseInt(arr[0]);
int y = Integer.parseInt(arr[1]);
MyPoint myPoint = new MyPoint();
myPoint.setX(x);
myPoint.setY(y);
return myPoint;
}
return null;
}
/**
* 将复合类型转换为字符串
*/
@Override
public String convertToString(Map arg0, Object arg1) {
return null;
}
}
action:
package cn.zzsxt.action;
import com.opensymphony.xwork2.ActionSupport;
import cn.zzsxt.entity.MyPoint;
public class MyPointAction extends ActionSupport {
private MyPoint point;
public MyPoint getPoint() {
return point;
}
public void setPoint(MyPoint point) {
this.point = point;
}
public String add() throws Exception {
System.out.println("执行了add方法，坐标为:"+point);
return this.SUCCESS;
}
}
action包下properties文件（简单类型）：
point=cn.zzsxt.conversion.MyPointConverter
conversion包下properties文件（复合类型）:
cn.zzsxt.entity.MyPoint=cn.zzsxt.conversion.MyPointConverter
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>
</head>
<body>
<form action="point-add.action" method="post">
请输入坐标(x,y)<input type="text" name="point"><br>
<input type="submit" value="提交">
</form>
</body>
</html>
success.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>
</head>
<body>
x=${point.x}<br>
y=${point.y}<br>
</body>
</html>
时间： 2024-10-21 13:22:44