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源碼之巔峰

微博系統(tǒng)（Java源碼，servlet+jsp），適用于初學者

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大小: 3.98MB

文件類型: .zip

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發(fā)布日期: 2025-03-21
語言: Java
標簽: 微博系統(tǒng)??Java??servlet+jsp??

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資源簡介

微博系統(tǒng)(Java源碼，servlet+jsp)，適用于初學者，比較簡陋，但一看就明白，對于初學者了解serlet,jsp具有教學作用

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代碼片段和文件信息

package?com.codecore.dao;

import?java.sql.ResultSet;
import?java.sql.SQLException;
import?java.util.ArrayList;
import?java.util.List;

import?com.codecore.dbutil.DBConn;
import?com.codecore.entity.Blog;
import?com.codecore.entity.UserInfo;

/**
?*?@version1.0
?*?@author?Vincent
?*?和關注頁相關的DAO類
?*/
public?class?AttentionDao?{
	?
	//添加關注
	public?boolean?addAttention（final?int?uid?final?int?fid）?{
		DBConn?dbConn?=?new?DBConn（）;
		String?sqlInsert?=?“insert?into?friends?（f_uid?f_gid?f_state）?values?（?????）“;
		String?sqlUpdate?=?“update?friends?set?f_state=2?where?f_uid=??and?f_gid=?“;
		int?affected?=?0;
		if?（isAttention2（uid?fid）==true）?{
			if?（isAttention（uid?fid）==true）?{
				affected?=?dbConn.execOther（sqlInsert?new?object[]?{
						uid?fid?1}）;
			}?else
				affected?=?dbConn.execOther（sqlUpdate?new?object[]?{
						fid?uid?}）;
		}
		return?affected?>?0???true?:?false;
	}

	//?判斷uid是否可以加fid為關注只需判斷fid是否已經(jīng)加uid關注
	private?static?boolean?isAttention（final?int?uid?final?int?fid）?{
		DBConn?dbConn?=?new?DBConn（）;
		String?sql?=?“select?*?from?friends?where?f_uid=??and?f_gid=?“;
		ResultSet?rs?=?dbConn.execQuery（sql?new?object[]?{?fid?uid?}）;
		boolean?flag?=?false;
		try?{
			if?（rs.next（））?{
				flag?=?false;
			}?else
				flag?=?true;
		}?catch?（SQLException?e）?{
			//?TODO?Auto-generated?catch?block
			e.printStackTrace（）;
		}?finally?{
			dbConn.closeConn（）;
		}
		return?flag;
	}

	/////------------判斷uid是否已經(jīng)關注fid--------/////////////
	private?static?boolean?isAttention2（final?int?uid?final?int?fid）?{
		DBConn?dbConn?=?new?DBConn（）;
		String?sql?=?“select?*?from?friends?where?f_uid=??and?f_gid=?“;
		ResultSet?rs?=?dbConn.execQuery（sql?new?object[]?{?uid?fid}）;
		boolean?flag?=?false;
		try?{
			if?（rs.next（））?{
				flag?=?false;//已關注
			}?else
				flag?=?true;//未關注
		}?catch?（SQLException?e）?{
			//?TODO?Auto-generated?catch?block
			e.printStackTrace（）;
		}?finally?{
			dbConn.closeConn（）;
		}
		return?flag;
	}

	//?統(tǒng)計關注人數(shù)
	public?long?accountAttention（final?int?id）?{
		DBConn?dbConn?=?new?DBConn（）;
		String?sql?=?“select?count（*）?from?friends?where?（f_uid=?）?or?（f_gid=??and?f_state=2）“;
		//select?count（*）?from?friends?where?（f_uid=（select?u_id?from?userinfo?where?u_id=??）?and?f_state=1）?or?（f_uid=（select?u_id?from?userinfo?where?u_id=??）?and?f_state=2）
		
		ResultSet?rs?=?dbConn.execQuery（sql?new?object[]?{?id?id?}）;
		try?{
			rs.next（）;
			long?num?=?Long.parseLong（rs.getString（“count（*）“））;
			return?num;
		}?catch?（SQLException?e）?{
			//?TODO?Auto-generated?catch?block
			return?0;
		}?finally?{
			dbConn.closeConn（）;
		}
	}

	//?獲取當前用戶u_id?關注人信息
	public?List?getAttention（final?int?id）?{
		List?lstInfos?=?new?ArrayList（）;
		String?sql?=?“SELECT?*?from?userinfo?where?u_id=?“?+
				“any?（select?f_gid?from?friends?where?（f_uid=（select?u_id?from?userinfo?where?u_id=?）?and?“?+
				“f_state=1）?o

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-03-14?14:52??CodeCore微博系統(tǒng)\
?????文件???????42558??2014-01-17?16:33??CodeCore微博系統(tǒng)\CodecoreMicroblog詳細設計說明書.docx
?????文件???????19584??2011-07-19?13:48??CodeCore微博系統(tǒng)\codecore.sql
?????目錄???????????0??2012-06-08?10:22??CodeCore微博系統(tǒng)\項目代碼\
?????目錄???????????0??2017-03-14?14:44??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\
?????文件????????3285??2017-03-14?14:31??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.classpath
?????目錄???????????0??2017-03-14?14:52??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.myeclipse\
?????文件?????????324??2011-07-19?12:20??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.mymetadata
?????文件????????1760??2017-03-14?11:41??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.project
?????目錄???????????0??2017-03-14?11:44??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\
?????文件?????????500??2011-06-28?22:17??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\.jsdtscope
?????文件?????????187??2011-07-06?16:14??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\org.eclipse.core.resources.prefs
?????文件?????????670??2017-03-14?11:40??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\org.eclipse.jdt.core.prefs
?????文件?????????117??2017-03-14?11:44??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\org.eclipse.jst.j2ee.ejb.annotations.xdoclet.prefs
?????文件?????????488??2017-03-14?14:46??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\org.eclipse.wst.common.component
?????文件?????????292??2017-03-14?11:44??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\org.eclipse.wst.common.project.facet.core.xml
?????文件??????????49??2011-06-28?22:17??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\org.eclipse.wst.jsdt.ui.superType.container
?????文件???????????6??2011-06-28?22:17??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\org.eclipse.wst.jsdt.ui.superType.name
?????文件??????????86??2017-03-14?11:44??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\.settings\org.eclipse.wst.ws.service.policy.prefs
?????目錄???????????0??2017-03-14?11:36??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\
?????目錄???????????0??2012-06-08?10:22??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\meta-INF\
?????文件??????????36??2011-06-28?22:17??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\meta-INF\MANIFEST.MF
?????文件????????3628??2011-07-15?19:48??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\MyJsp.jsp
?????目錄???????????0??2017-03-14?11:36??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\WEB-INF\
?????目錄???????????0??2017-03-14?14:31??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\WEB-INF\classes\
?????目錄???????????0??2017-03-14?14:31??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\WEB-INF\classes\com\
?????目錄???????????0??2017-03-14?14:31??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\WEB-INF\classes\com\codecore\
?????目錄???????????0??2017-03-14?14:31??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\WEB-INF\classes\com\codecore\dao\
?????文件????????9840??2017-03-14?14:31??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\WEB-INF\classes\com\codecore\dao\AttentionDao.class
?????文件????????3695??2017-03-14?14:31??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\WEB-INF\classes\com\codecore\dao\BlogPublish.class
?????文件????????2334??2017-03-14?14:31??CodeCore微博系統(tǒng)\項目代碼\CodecoreMicroblog\WebRoot\WEB-INF\classes\com\codecore\dao\CancelFollowingDao.class
............此處省略268個文件信息

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