将字符集添加到邮件ContentType

/** from 
时代Java - nowjava.com**/

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 *  Licensed to the Apache Software Foundation (ASF) under one

 *  or more contributor license agreements.  See the NOTICE file

 *  distributed with this work for additional information

 *  regarding copyright ownership.  The ASF licenses this file

 *  to you under the Apache License, Version 2.0 (the

 *  "License"); you may not use this file except in compliance

 *  with the License.  You may obtain a copy of the License at

 *

 *   http://www.apache.org/licenses/LICENSE-2.0

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 */

//package com.nowjava;

import java.util.Enumeration;

import javax.mail.internet.ContentType;

import javax.mail.internet.ParameterList;


public class Main {

    public static ContentType addCharset(ContentType contentType,

            String charset) {

        ParameterList orgParamList = contentType.getParameterList();

        ParameterList paramList = new ParameterList();

        if (orgParamList != null) {
        /* from 
        n  o  w  j  a  v  a . c o m*/

            for (Enumeration<?> e = orgParamList.getNames(); e

                    .hasMoreElements();) {

                String name = (String) e.nextElement();