BBS论坛管理系统（jsp+struts）

package j2eebbs; import java.sql.ResultSet; import java.util.Vector; public class Forum { private int id; private String forumname; private String manager; private int topicNum; private int lastTopicId; private String lastTopicTitle = ""; private String lastTopicAuthor = ""; private String lastTopicTime = ""; public String getForumname() { return forumname; } public void setForumname(String forumname) { this.forumname = forumname; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getLastTopicAuthor() { return lastTopicAuthor; } public void setLastTopicAuthor(String lastTopicAuthor) { this.lastTopicAuthor = lastTopicAuthor; } public int getLastTopicId() { return lastTopicId; } public void setLastTopicId(int lastTopicId) { this.lastTopicId = lastTopicId; } public String getLastTopicTime() { return lastTopicTime; } public void setLastTopicTime(String lastTopicTime) { this.lastTopicTime = lastTopicTime; } public String getLastTopicTitle() { return lastTopicTitle; } public void setLastTopicTitle(String lastTopicTitle) { this.lastTopicTitle = lastTopicTitle; } public String getManager() { return manager; } public void setManager(String manager) { this.manager = manager; } public int getTopicNum() { return topicNum; } public void setTopicNum(int topicNum) { this.topicNum = topicNum; } public Forum(int id, String forumname, String manager, int topicNum, int lastTopicId, String lastTopicTitle, String lastTopicAuthor, String lastTopicTime) { this.id = id; this.forumname = forumname; this.manager = manager; this.topicNum = topicNum; this.lastTopicId = lastTopicId; this.lastTopicTitle = lastTopicTitle; this.lastTopicAuthor = lastTopicAuthor; this.lastTopicTime = lastTopicTime; } public Forum(int id, String forumname, String manager) { this.id = id; this.forumname = forumname; this.manager = manager; } public static Vector search(DB db) throws Exception { int topicNum = 0; int lastTopicId; String lastTopicTitle; String lastTopicAuthor; String lastTopicTime; Vector forumVector = new Vector(); ResultSet rs, rsTopic; String strSql; int forumid; strSql = "select * from forum"; rs = db.OpenSql(strSql); while (rs.next()) { lastTopicId = 0; lastTopicTitle = null; lastTopicAuthor = null; lastTopicTime = null; forumid = rs.getInt("id"); strSql = "select count(*) from topic where forumid=" + forumid; rsTopic = db.OpenSql(strSql); if (rsTopic.next()) { topicNum = rsTopic.getInt(1); } strSql = "select * from topic where forumid=" + forumid + " order by submittime desc limit 1"; rsTopic = db.OpenSql(strSql); if (rsTopic.next()) { lastTopicId = rsTopic.getInt("id"); lastTopicTitle = rsTopic.getString("title"); lastTopicTime = rsTopic.getString("submittime"); lastTopicAuthor = rsTopic.getString("author"); } forumVector.add(new Forum(forumid, rs.getString("forumname"), rs .getString("manager"), topicNum, lastTopicId, lastTopicTitle, lastTopicTime, lastTopicAuthor)); } return forumVector; } public static Vector searchAllForums(DB db) throws Exception { int forumid = 0; String forumname = null; String manager = null; Vector forumVector = new Vector(); ResultSet rs; String strSql; strSql = "select * from forum"; rs = db.OpenSql(strSql); while (rs.next()) { forumid = rs.getInt("id"); forumname = rs.getString("forumname"); manager = rs.getString("manager"); forumVector.add(new Forum(forumid, forumname, manager)); } return forumVector; } public static boolean insert(DB db, String forumname) throws Exception { String strSql; ResultSet rs; int iMaxId; strSql = "select max(id) from forum"; rs = db.OpenSql(strSql); if (rs.next()) { iMaxId = rs.getInt(1) + 1; } else { iMaxId = 1; } strSql = "insert into forum values('" + iMaxId + "','" + forumname + "','')"; if (db.ExecSql(strSql) == 0) { return false; } else { return true; } } public static boolean delete(DB db, String forumid) throws Exception { String strSql; strSql = "delete from forum where id=" + forumid; if (db.ExecSql(strSql) == 0) { return false; } else { return true; } } public static boolean edit(DB db, String forumid, String forumname, String manager) throws Exception { String strSql; strSql = "update forum set forumname='" + forumname + "',manager='" + manager + "'where id=" + forumid; if (db.ExecSql(strSql) == 0) { return false; } else { return true; } } }