Struts2的类型转换实例详解(升级)

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这次主要是要完善一下，假如有多个Point输入如何处理？

处理方法

1：在PointAction里面定义多个private point1；private point2；private point3；....

2：在PointAction里面定义个List<Point>，新建一个conversion来处理List<Point>于String之间的转换

1、先改写一下input.jsp

<s:form action="pointConvertor"><s:textfield name="point" label="point"></s:textfield><s:textfield name="point" label="point2"></s:textfield><s:textfield name="point" label="point3"></s:textfield><s:textfield name="age" label="age"></s:textfield><s:textfield name="username" label="username"></s:textfield><s:textfield name="date" label="date"></s:textfield><s:submit label="submit"></s:submit></s:form>

2、改Point Action.java

在里面添加一条List集合

private List<Point> point;public List<Point> getPoint() {return point;}public void setPoint(List<Point> point) {this.point = point;}

3、重新new一个PointConverter3.java

用来进行类型转换

package com.test.converter;import java.util.ArrayList;import java.util.List;import java.util.Map;import org.apache.struts2.util.StrutsTypeConverter;import com.test.bean.Point;public class PointConverter3 extends StrutsTypeConverter {@Overridepublic Object convertFromString(Map arg0, String[] arg1, Class arg2) {List<Point> list = new ArrayList<Point>();for(String str:arg1){Point point = new Point();String[]  param = str.split(",");int x = Integer.parseInt(param[0]);int y = Integer.parseInt(param[1]);point.setX(x);point.setY(y);list.add(point);}return list;}@Overridepublic String convertToString(Map arg0, Object arg1) {List<Point> list = (List<Point>)arg1;StringBuilder sb = new StringBuilder();sb.append("[ ");for(Point point : list ){int x = point.getX();int y = point.getY();sb.append("x = ").append(x).append("   ").append("y = ").append(y).append("  |  ");}sb.append(" ]");return sb.toString();}}

4、改写相应的PointAction-conversion.properties文件

point=com.test.converter.PointConverter3

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