flex与java相结合开发时需注意的问题

java的pojo中，不能有类似这样的成员变量
sRate,
意思就是，不能只有首字母小写，至少首两个字母小写，不然与flex的vo作邦定。

以下是一个工具类，从java的pojo生成flex的vo.

package cn.bestwiz.design.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")
|| typeName.equals("Boolean") || typeName.equals("int")) {
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("Timestamp")) {
return "Date";
} 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 (packageName == null) {
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 = { "cn.bestwiz.design.tc.Tick" };
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], "", "e:/");
}

}

}