『FLEX』Java的pojo对象转成Flex的vo对象

在使用openamf的类映射功能时，一般需要在as端也定义和java pojo类似的对象，用于类的映射。

有关使用openamf的类映射，请见之前的《openAMF自定义类映射(custom-class-mapping)的使用》

如果手工去写这些和java对应的flex vo对象比较麻烦，这里用java写了个简单的as vo对象生成的工具，代码如下：

/**
*
*/
package com.nstar.base.util;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.lang.reflect.Field;

import org.apache.commons.lang.StringUtils;

/**
* @author Administrator
*
*/
public class VoUtils {
public VoUtils(){}

//根据java类对象的类型返回vo类型
public static String getClassType(Class c){
String typeName = c.getSimpleName();
if (typeName.equals("String") || typeName.equals("Date")) {
return typeName;
}else if (typeName.equals("BigDecimal") || typeName.equals("Decimal") ||
typeName.equals("Double")) {
return "Number";
}else if (typeName.equals("Integer")) {
return "int";
}else if (typeName.equals("Boolean")) {
return "boolean";
}else {
return "*";//其它类型的设置为未知类型
}
}
//重复c字符count次，用于格式化生成的as文件
public static String repeat(String c, int count){
String temp = "";
for(int i = 0;i<count ;i++){
temp += c;
}
return temp;
}
/**
* 生成as文件
* @param pojoName java对象名称
* @param packageName flex中vo对象的包名
* @throws ClassNotFoundException
* @throws IOException
*/
public static void generateAsFile(String pojoName, String packageName, String folder)
throws ClassNotFoundException, IOException {
Class c = Class.forName(pojoName);
Field[] fields =c.getDeclaredFields();
//as的vo对象名称结尾加上VO标志
File f = new File(folder+c.getSimpleName()+"VO.as");
BufferedWriter bw = new BufferedWriter(
new FileWriter(f));
//包名，没有设置包名就取和java pojo一样的包名
if (StringUtils.isEmpty(packageName)){
bw.write("package "+c.getPackage().getName()+"\n{\n");
}else{
bw.write("package "+packageName+"\n{\n");
}
//写类
bw.write(repeat(" ",4)+"public class "+c.getSimpleName()+"VO\n");
bw.write(repeat(" ",4)+"{\n");
//写属性
for(int i=0;i<fields.length;i++){
Class fieldType = fields[i].getType();
String typeName = getClassType(fieldType);
bw.write(repeat(" ",8)+"private var _"+fields[i].getName()+":"+typeName+";\n");
}
bw.write("\n\n\n");
//写空的构造函数
bw.write(repeat(" ",8)+"public function "+c.getSimpleName()+"VO(){}\n\n");
//写 setter/getter 方法
for(int i=0;i<fields.length;i++){
Class fieldType = fields[i].getType();
String typeName = getClassType(fieldType);
//setter
bw.write(repeat(" ",8)+"public function set "+fields[i].getName()+"(value:"+typeName+"):void{\n");
bw.write(repeat(" ",12)+"this._"+fields[i].getName()+" = value;\n");
bw.write(repeat(" ",8)+"}\n\n");
//getter
bw.write(repeat(" ",8)+"public function get "+fields[i].getName()+"():"+typeName+"{\n");
bw.write(repeat(" ",12)+"return this._"+fields[i].getName()+";\n");
bw.write(repeat(" ",8)+"}\n\n\n");
}
bw.write(repeat(" ",4)+"}\n");
bw.write("}");
bw.close();
}

//测试，写了个测试
public static void main(String[] args) throws ClassNotFoundException, IOException {
// TODO Auto-generated method stub
String[] pojos = {
"com.nstar.model.orderexpress.Area",
"com.nstar.model.orderexpress.FoodType",
"com.nstar.model.orderexpress.Holiday",
"com.nstar.model.orderexpress.ItemSpec",
"com.nstar.model.orderexpress.ItemSpecType",
"com.nstar.model.orderexpress.Menu2Rest",
"com.nstar.model.orderexpress.OrderInfo",
"com.nstar.model.orderexpress.OrderInfoExp",
"com.nstar.model.orderexpress.OrderMenu",
"com.nstar.model.orderexpress.OrderState",
"com.nstar.model.orderexpress.OrderType",
"com.nstar.model.orderexpress.Repository",
"com.nstar.model.orderexpress.RepositoryType",
"com.nstar.model.orderexpress.RestInfo",
"com.nstar.model.orderexpress.UserInfo",
"com.nstar.model.orderexpress.UserLevel",
"com.nstar.model.orderexpress.UserType"
};
for(int i=0;i<pojos.length;i++){
//Class c = Class.forName(pojos[i]);
//System.out.println("registerClassAlias('"+pojos[i]+"',com.nstar.orderexpress.vo."+c.getSimpleName()+"VO);");
VoUtils.generateAsFile(pojos[i],"com.nstar.orderexpress.vo","C:/temp/");
}
}

}

测试时可以随便找个Java对象来测试，下面是其中生成的一个文件(OrderTypeVO)的内容：

package com.nstar.orderexpress.vo
{
public class OrderTypeVO
{
private var _orderTypeId:String;
private var _name:String;
private var _remarks:String;

public function OrderTypeVO(){}

public function set orderTypeId(value:String):void{
this._orderTypeId = value;
}

public function get orderTypeId():String{
return this._orderTypeId;
}

public function set name(value:String):void{
this._name = value;
}

public function get name():String{
return this._name;
}

public function set remarks(value:String):void{
this._remarks = value;
}

public function get remarks():String{
return this._remarks;
}

}
}