JavaMail學習筆記（六）搜索郵件

 

JavaMail在javax.mail.search包中定義了一個用於創建搜索條件的SearchTerm類，應用程序創建SearchTerm類的實例對象後，就可以調用Folder.Search(SearchTerm st)方法搜索郵件夾中符合搜索條件的所有郵件。SearchTerm是一個抽象類，JavaMail提供了22個實現子類以幫助應用程序創建不同的搜索條件，這22個類可分爲兩大類型，如下所示：

1、用於創建邏輯組合關係的類

• AND條件（AndTerm類）
• OR條件（OrTerm類）
• NOT條件（NotTerm類）
• Comparison條件（ComparisonTerm類）

2、用於創建具體搜索條件的類

• DATE條件（SentDateTerm、ReceivedDateTerm類）
• CONTENT條件（BodyTerm類）
• HEADER條件（FromStringTerm、RecipientStringTerm、SubjectTerm類等）

下面通過實現來說明以上類的用法及含義：

1、搜索發件人爲“智聯招聘“，而且郵件正文包含“Java工程師“的所有郵件

SearchTerm andTerm = new AndTerm(
    new FromStringTerm("智聯招聘"),
    new BodyTerm("java工程師"));
Message[] messages = folder.search(andTerm);

SearchTerm andTerm = new AndTerm(
	new FromStringTerm("智聯招聘"),
	new BodyTerm("java工程師"));
Message[] messages = folder.search(andTerm);

2、搜索發件人爲“智聯招聘“或主題包含“最新職位信息“的所有郵件

SearchTerm orTerm = new OrTerm(
    new FromStringTerm("智聯招聘"),
    new SubjectTerm("最新職位信息"));
Message[] messages = folder.search(orTerm);

SearchTerm orTerm = new OrTerm(
	new FromStringTerm("智聯招聘"), 
	new SubjectTerm("最新職位信息"));
Message[] messages = folder.search(orTerm);

3、搜索發件人不包含“智聯招聘“所有的郵件

SearchTerm notTerm = new NotTerm(new FromStringTerm("智聯招聘"));
Message[] messages = folder.search(notTerm);

SearchTerm notTerm = new NotTerm(new FromStringTerm("智聯招聘"));
Message[] messages = folder.search(notTerm);

4、搜索週一到今天收到的的所有郵件

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.DAY_OF_WEEK, calendar.get(Calendar.DAY_OF_WEEK - (Calendar.DAY_OF_WEEK -
1)) - 1);
Date mondayDate = calendar.getTime();
SearchTerm comparisonTermGe = new SentDateTerm(ComparisonTerm.GE, mondayDate);
SearchTerm comparisonTermLe = new SentDateTerm(ComparisonTerm.LE,
new Date());
SearchTerm comparisonAndTerm = new AndTerm(comparisonTermGe, comparisonTermLe);
Message[] messages = folder.search(comparisonAndTerm);

Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.DAY_OF_WEEK, calendar.get(Calendar.DAY_OF_WEEK - (Calendar.DAY_OF_WEEK - 1)) - 1);
Date mondayDate = calendar.getTime();
SearchTerm comparisonTermGe = new SentDateTerm(ComparisonTerm.GE, mondayDate);
SearchTerm comparisonTermLe = new SentDateTerm(ComparisonTerm.LE, new Date());
SearchTerm comparisonAndTerm = new AndTerm(comparisonTermGe, comparisonTermLe);
Message[] messages = folder.search(comparisonAndTerm);

5、搜索大於或等於100KB的所有郵件

int mailSize = 1024 *
100;
SearchTerm intComparisonTerm = new SizeTerm(IntegerComparisonTerm.GE, mailSize);
Message[] messages = folder.search(intComparisonTerm);

int mailSize = 1024 * 100;
SearchTerm intComparisonTerm = new SizeTerm(IntegerComparisonTerm.GE, mailSize);
Message[] messages = folder.search(intComparisonTerm);

ComparisonTerm類常用於日期和數字比較中，它使用六個常量EQ（＝）、GE（>=）、GT（>）、LE（<=）、LT（<）、NE（!=）來表示六種不同的比較操作。

完整代碼：

package org.yangxin.study.jm;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Calendar;
import java.util.Date;
import java.util.Properties;

import javax.mail.Flags.Flag;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.URLName;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;
import javax.mail.search.AndTerm;
import javax.mail.search.BodyTerm;
import javax.mail.search.ComparisonTerm;
import javax.mail.search.FromStringTerm;
import javax.mail.search.IntegerComparisonTerm;
import javax.mail.search.NotTerm;
import javax.mail.search.OrTerm;
import javax.mail.search.SearchTerm;
import javax.mail.search.SentDateTerm;
import javax.mail.search.SizeTerm;
import javax.mail.search.SubjectTerm;

/**
* 搜索郵件
*/
public class SearchMailTest {

    public static
void main(String[] args) throws Exception {
        Properties props = new Properties();
        props.setProperty("mail.pop3.auth",
"true");
        Session session = Session.getInstance(props);
        URLName url = new URLName("pop3",
"pop3.163.com", 110,
null, "[email protected]",
"yX546900873");
        Store store = session.getStore(url);
        store.connect();
        // 得到收件箱
        Folder folder = store.getFolder("INBOX");
        // 以讀寫模式打開收件箱
        folder.open(Folder.READ_WRITE);

        Message[] messages = search(folder);

        System.out.println("收件箱中共有:" + folder.getMessageCount() +
"封郵件，搜索到" + messages.length + "封符合條件的郵件!");

        // 解析郵件搜索到的郵件
        POP3ReceiveMailTest.parseMessage(messages);

        // 根據用戶輸入的條件搜索所有郵件,並提示用戶是否刪除
        //searchDemo(folder);

        folder.close(true);
        store.close();
    }

    public static Message[] search(Folder folder)
throws Exception {
        // 搜索主題包含美食的郵件
        String subject = "java培訓";
        SearchTerm subjectTerm = new SubjectTerm(subject);

        // 搜索發件人包含支付寶的郵件
        SearchTerm fromTerm = new FromStringTerm("支付寶");

        // 搜索郵件內容包含"招聘"的郵件
        SearchTerm bodyTerm = new BodyTerm("招聘");

        // 搜索發件人不包含“智聯招聘”的郵件
        SearchTerm notTerm = new NotTerm(new FromStringTerm("智聯招聘"));

        // 搜索發件人爲“智聯招聘”，而且內容包含“Java工程師“的郵件
        SearchTerm andTerm = new AndTerm(
                new FromStringTerm("智聯招聘"),
                new BodyTerm("java工程師"));


        // 搜索發件人爲”智聯招聘“或主題包含”最新職位信息“的郵件
        SearchTerm orTerm = new OrTerm(
                new FromStringTerm("智聯招聘"),
                new SubjectTerm("最新職位信息"));


        // 搜索週一到今天收到的的所有郵件
        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.DAY_OF_WEEK, calendar.get(Calendar.DAY_OF_WEEK - (Calendar.DAY_OF_WEEK -
1)) - 1);
        Date mondayDate = calendar.getTime();
        SearchTerm comparisonTermGe = new SentDateTerm(ComparisonTerm.GE, mondayDate);
        SearchTerm comparisonTermLe = 
new SentDateTerm(ComparisonTerm.LE, new Date());
        SearchTerm comparisonAndTerm = new AndTerm(comparisonTermGe, comparisonTermLe);

        // 搜索大於或等100KB的所有郵件
        int mailSize = 
1024 * 100;
        SearchTerm intComparisonTerm = new SizeTerm(IntegerComparisonTerm.GE, mailSize);

        return folder.search(intComparisonTerm);
    }
}

package org.yangxin.study.jm;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Calendar;
import java.util.Date;
import java.util.Properties;

import javax.mail.Flags.Flag;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.URLName;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;
import javax.mail.search.AndTerm;
import javax.mail.search.BodyTerm;
import javax.mail.search.ComparisonTerm;
import javax.mail.search.FromStringTerm;
import javax.mail.search.IntegerComparisonTerm;
import javax.mail.search.NotTerm;
import javax.mail.search.OrTerm;
import javax.mail.search.SearchTerm;
import javax.mail.search.SentDateTerm;
import javax.mail.search.SizeTerm;
import javax.mail.search.SubjectTerm;

/**
 * 搜索郵件
 */
public class SearchMailTest {
	
	public static void main(String[] args) throws Exception {
		Properties props = new Properties();
		props.setProperty("mail.pop3.auth", "true");
		Session session = Session.getInstance(props);
		URLName url = new URLName("pop3", "pop3.163.com", 110, null, "[email protected]", "yX546900873");
		Store store = session.getStore(url);
		store.connect();
		// 得到收件箱
		Folder folder = store.getFolder("INBOX");
		// 以讀寫模式打開收件箱
		folder.open(Folder.READ_WRITE);
		
		Message[] messages = search(folder);
		
		System.out.println("收件箱中共有:" + folder.getMessageCount() + "封郵件，搜索到" + messages.length + "封符合條件的郵件!");
		
		// 解析郵件搜索到的郵件
		POP3ReceiveMailTest.parseMessage(messages);	
		
		// 根據用戶輸入的條件搜索所有郵件,並提示用戶是否刪除
		//searchDemo(folder);
		
		folder.close(true);
		store.close();
	}
	
	public static Message[] search(Folder folder) throws Exception {
		// 搜索主題包含美食的郵件
		String subject = "java培訓";
		SearchTerm subjectTerm = new SubjectTerm(subject);
		
		// 搜索發件人包含支付寶的郵件
		SearchTerm fromTerm = new FromStringTerm("支付寶");
		
		// 搜索郵件內容包含"招聘"的郵件
		SearchTerm bodyTerm = new BodyTerm("招聘");
		
		// 搜索發件人不包含“智聯招聘”的郵件
		SearchTerm notTerm = new NotTerm(new FromStringTerm("智聯招聘"));
		
		// 搜索發件人爲“智聯招聘”，而且內容包含“Java工程師“的郵件
		SearchTerm andTerm = new AndTerm(
				new FromStringTerm("智聯招聘"),
				new BodyTerm("java工程師"));
		
		
		// 搜索發件人爲”智聯招聘“或主題包含”最新職位信息“的郵件
		SearchTerm orTerm = new OrTerm(
				new FromStringTerm("智聯招聘"), 
				new SubjectTerm("最新職位信息"));
		

		// 搜索週一到今天收到的的所有郵件
		Calendar calendar = Calendar.getInstance();
		calendar.set(Calendar.DAY_OF_WEEK, calendar.get(Calendar.DAY_OF_WEEK - (Calendar.DAY_OF_WEEK - 1)) - 1);
		Date mondayDate = calendar.getTime();
		SearchTerm comparisonTermGe = new SentDateTerm(ComparisonTerm.GE, mondayDate);
		SearchTerm comparisonTermLe = new SentDateTerm(ComparisonTerm.LE, new Date());
		SearchTerm comparisonAndTerm = new AndTerm(comparisonTermGe, comparisonTermLe);
		
		// 搜索大於或等100KB的所有郵件
		int mailSize = 1024 * 100;
		SearchTerm intComparisonTerm = new SizeTerm(IntegerComparisonTerm.GE, mailSize);
		
		return folder.search(intComparisonTerm);
	}
 }

實例：根據用戶輸入的收件人（email地址或姓名）和主題作爲搜索條件，並提示用戶是否刪除搜索到的郵件？

/**
     * 根據用戶輸入的收件人地址（包括email地址和姓名）和主題作爲搜索條件，並提示用戶是否刪除搜索到的郵件
     * @param from 收件人
     * @param subject 主題
     */
    public static
void searchDemo(Folder folder) throws Exception {
        String notifyMsg = "收件箱中一共有" + folder.getMessageCount() +
"封郵件。請選擇操作：\n";
        notifyMsg += "1、輸入收件人\n" + 
"2、輸入主題\n" + "3、開始搜索\n" +
"4、退出";
        System.out.println(notifyMsg);
        String from = null;
        String subject = null;
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String oper = reader.readLine().trim();
        while(!(from != null && subject !=
null)) {
            if ("4".equals(oper)) {
                System.exit(0);
            } else {
                if ("1".equals(oper)) {
                    System.out.print("請輸入收件人：");
                    from = reader.readLine();
                }  else 
if ("2".equals(oper)) {
                    System.out.print("請輸入主題：");
                    subject = reader.readLine();
                } else if ("3".equals(oper)) {
                    if (from ==
null || subject == null) {
                        System.out.println("未輸入搜索條件，無法進行搜索！");
                    } else {
                        break;
                    }
                }
            }
            System.out.print("請選擇操作：");
            oper = reader.readLine().trim();
        }

        System.out.println("\n系統正在根據搜索條件查詢所有郵件，請稍候......\n");

        // 根據輸入的條件，創建SearchTerm實例對象
        SearchTerm orTerm = new OrTerm(
                new FromStringTerm(from),
                new SubjectTerm(subject)
                );

        // 根據搜索條件得到搜索到的郵件列表
        Message[] messages = folder.search(orTerm);

        System.out.println("共搜索到" + messages.length +
"封滿足搜索條件的郵件！\n\n請選擇操作：1、查看郵件\t 2、刪除所有郵件");

        String deleteQuestion = "是否要刪除搜索到的郵件?(yes/no)";

        String searchResultOper = reader.readLine();

        if ("1".equals(searchResultOper)) {
            for (Message message : messages) {
                MimeMessage msg = (MimeMessage) message;
                String sub = POP3ReceiveMailTest.getSubject(msg);
                System.out.println("開始查看第" + msg.getMessageNumber() +
"封郵件...");
                System.out.println("主題: " + sub);
                System.out.println("發件人: " + POP3ReceiveMailTest.getFrom(msg));
                System.out.println("收件人：" + POP3ReceiveMailTest.getReceiveAddress(msg,
null));
                System.out.println("發送時間：" + POP3ReceiveMailTest.getSentDate(msg,
null));
                System.out.println(deleteQuestion);
                String answer = reader.readLine();
                if ("yes".equals(answer)) {
                    msg.setFlag(Flag.DELETED, 
true);
                    System.out.println("郵件[" + sub +
"]刪除成功!");
                } else 
if ("no".equals(answer)) {
                    System.out.println("第" + msg.getMessageNumber() +
"封郵件查看完成！");
                } else 
if ("stop".equals(answer)) {
                    System.exit(0);
                }
                System.out.println();
            }
        } else {
            System.out.println(deleteQuestion);
            String answer = reader.readLine();
            if ("yes".equals(answer)) {
                for (Message message : messages) {
                    String sub = MimeUtility.decodeText(message.getSubject());
                    message.setFlag(Flag.DELETED, 
true);
                    System.out.println("郵件[" + sub +
"]刪除成功!");
                }
            }
        }
    }

/**
	 * 根據用戶輸入的收件人地址（包括email地址和姓名）和主題作爲搜索條件，並提示用戶是否刪除搜索到的郵件
	 * @param from 收件人
	 * @param subject 主題
	 */
	public static void searchDemo(Folder folder) throws Exception {
		String notifyMsg = "收件箱中一共有" + folder.getMessageCount() + "封郵件。請選擇操作：\n";
		notifyMsg += "1、輸入收件人\n" + "2、輸入主題\n" + "3、開始搜索\n" + "4、退出";
		System.out.println(notifyMsg);
		String from = null;
		String subject = null;
		BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
		String oper = reader.readLine().trim();
		while(!(from != null && subject != null)) {
			if ("4".equals(oper)) {
				System.exit(0);
			} else {
				if ("1".equals(oper)) {
					System.out.print("請輸入收件人：");
					from = reader.readLine();
				}  else if ("2".equals(oper)) {
					System.out.print("請輸入主題：");
					subject = reader.readLine();
				} else if ("3".equals(oper)) {
					if (from == null || subject == null) {
						System.out.println("未輸入搜索條件，無法進行搜索！");
					} else {
						break;
					}
				}
			}
			System.out.print("請選擇操作：");
			oper = reader.readLine().trim();
		}
		
		System.out.println("\n系統正在根據搜索條件查詢所有郵件，請稍候......\n");
		
		// 根據輸入的條件，創建SearchTerm實例對象
		SearchTerm orTerm = new OrTerm(
				new FromStringTerm(from),
				new SubjectTerm(subject)
				);
		
		// 根據搜索條件得到搜索到的郵件列表
		Message[] messages = folder.search(orTerm);
		
		System.out.println("共搜索到" + messages.length + "封滿足搜索條件的郵件！\n\n請選擇操作：1、查看郵件\t 2、刪除所有郵件");
		
		String deleteQuestion = "是否要刪除搜索到的郵件?(yes/no)";
		
		String searchResultOper = reader.readLine();
		
		if ("1".equals(searchResultOper)) {
			for (Message message : messages) {
				MimeMessage msg = (MimeMessage) message;
				String sub = POP3ReceiveMailTest.getSubject(msg);
				System.out.println("開始查看第" + msg.getMessageNumber() + "封郵件...");
				System.out.println("主題: " + sub);
				System.out.println("發件人: " + POP3ReceiveMailTest.getFrom(msg));
				System.out.println("收件人：" + POP3ReceiveMailTest.getReceiveAddress(msg, null));
				System.out.println("發送時間：" + POP3ReceiveMailTest.getSentDate(msg, null));
				System.out.println(deleteQuestion);
				String answer = reader.readLine();
				if ("yes".equals(answer)) {
					msg.setFlag(Flag.DELETED, true);
					System.out.println("郵件[" + sub + "]刪除成功!");
				} else if ("no".equals(answer)) {
					System.out.println("第" + msg.getMessageNumber() + "封郵件查看完成！");
				} else if ("stop".equals(answer)) {
					System.exit(0);
				}
				System.out.println();
			}
		} else {
			System.out.println(deleteQuestion);
			String answer = reader.readLine();
			if ("yes".equals(answer)) {
				for (Message message : messages) {
					String sub = MimeUtility.decodeText(message.getSubject());
					message.setFlag(Flag.DELETED, true);
					System.out.println("郵件[" + sub + "]刪除成功!");
				}
			}
		}
	}

搜索結果：

1、搜索條件，收件人：智聯招聘    主題：最新招聘信息

2、搜索條件，收件人：支付寶   主題：信用卡