Struts2 类型转换

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Struts2 类型转换

2013年08月11日 ⁄ 综合 ⁄ 共 3665字 ⁄ 字号小中大 ⁄ 评论关闭

实例代码：test-conversion.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
   <title>My JSP 'test-conversion.jsp' starting page</title>
</head>

<body>
    <s:form action="Test_Conversion">
    <s:textfield name="product" label="Product"></s:textfield>
    <s:textfield name="customer" label="Customer"></s:textfield>
    <s:textfield name="quantity" label="Quantity"></s:textfield>
    <s:textfield name="price" label="Price"></s:textfield>

    <s:textfield name="orderDate" label="OrderDate"></s:textfield>
    <s:submit></s:submit>
    </s:form>
</body>
</html>

相对应的javabean类Order.java：

package com.llp182.test;

import java.sql.Date;

public class Order {

private String product;

private Customer customer;

private int quantity;

private float price;

private Date orderDate;

public String getProduct() {
return product;
}

public void setProduct(String product) {
this.product = product;
}

public Customer getCustomer() {
return customer;
}

public void setCustomer(Customer customer) {
this.customer = customer;
}

public int getQuantity() {
return quantity;
}

public void setQuantity(int quantity) {
this.quantity = quantity;
}

public float getPrice() {
return price;
}

public void setPrice(float price) {
this.price = price;
}

public Date getOrderDate() {
return orderDate;
}

public void setOrderDate(Date orderDate) {
this.orderDate = orderDate;
}

@Override
public String toString() {
  return "Order [customer=" + customer + ", orderDate=" + orderDate
    + ", price=" + price + ", product=" + product + ", quantity="
    + quantity + "]";
}

}

相对应Action类，TestConversionAction.java：

package com.llp182.test;

import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.opensymphony.xwork2.Preparable;

import java.util.*;

public class TestConversionAction extends ActionSupport
implements ModelDriven<Order>,Preparable{

private Collection<Customer> custs;

public Collection<Customer> getCusts() {
return custs;
}

public void setCusts(Collection<Customer> custs) {
  this.custs = custs;
}

public String addCusts(){
  System.out.println("custs:"+custs);
  return SUCCESS;
}

public String add(){
  System.out.println("add: "+order);
  return SUCCESS;
}

private Order order=null;

public void prepare() throws Exception {
  order=new Order();
}

public Order getModel() {
return order;
}

}

类型转换器：

CustomerConverter.java：

package com.llp182.test;

import java.util.Map;

import org.apache.struts2.util.StrutsTypeConverter;

public class CustomerConverter extends StrutsTypeConverter {

@Override
public Object convertFromString(Map arg0, String[] arg1, Class arg2) {
  if(arg2.getName().equals(Customer.class.getName())){
   if(arg1!=null && arg1.length>0){

    String value = arg1[0];

    String[] strs=value.split("-");

    if(strs != null && strs.length > 1){

     String customerName = strs[0];
     String phoneNumber = strs[1];

     Customer customer = new Customer();
     customer.setCustomerName(customerName);
     customer.setPhoneNmber(phoneNumber);

     return customer;
    }
   }
  }

  return null;
}

@Override
public String convertToString(Map arg0, Object arg1) {
  if(arg1!=null && arg1 instanceof Customer){
   Customer cust=(Customer)arg1;
   return cust.getCustomerName()+"-"+cust.getPhoneNmber();
  }

  return null;
}

}

在相对应Action类包中com.llp182.test新建一个TestConversionAction.properties文件
#Invalid field value for field "orderDate"
#invalid.fieldvalue.fieldName=custMsg
invalid.fieldvalue.orderDate=\u65E5\u671F\u683C\u5F0F\u4E0D\u5408\u6CD5

接下来，使类型转化器和action中的对应Customer属性关联起来新建一个properties文件