publicstaticList<String>typePart(String str) {//File file = new File("src/1.doc");//all//String textAll = docIo.contextOfDoc(file);String[] partOne = str.split("新技术篇");//第一篇到目录String partOneCatalog = partOne[1].split("网络安全篇")[0]; String partNest= partOne[1]...
javaConnection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","password");Statement stmt = conn.createStatement();String sql ="INSERT INTO user (name, age) VALUES ('Tom', 20)";stmt.executeUpdate(sql);stmt.close();conn.close();五、Java抓取数据的注意事项 在进行...
3.2 插入数据 importjava.sql.Connection;importjava.sql.DriverManager;importjava.sql.PreparedStatement;publicclassDatabaseHandler{privatestaticfinalStringDB_URL="jdbc:mysql://localhost:3306/yourdb";privatestaticfinalStringUSER="root";privatestaticfinalStringPASS="password";publicvoidsaveDocument(Stringtitle,Strin...
七、处理AJAX请求 在一些现代化的网站上，很多数据都是通过AJAX请求获取的。这时候我们需要使用Jsoup模拟AJAX请求来获取数据。以下是一个使用Jsoup进行AJAX请求的示例代码：javaString url =";;Document doc = Jsoup.connect(url) .header("X-Requested-With","XMLHttpRequest") .data("param1","value1") ...
)"; ps = connection.prepareStatement(sql); ps.setInt(1,product.getId()); ps.setString(2,product.getName()); ps.setInt(3,product.getAge()); ps.setString(4,product.getSex()); ps.setString(5,product.getHabit()); ps.executeUpdate(); } catch (SQLException throwables) { throwables....
-`executeUpdate`函数通常用于执行UPDATE、INSERT和DELETE等修改数据库的操作。 示例代码 importjava.sql.*; publicclassMain{ publicstaticvoidmain(String[]args){ Stringsql="UPDATEstudentsSETname='Alice'WHEREid=1"; try{ //创建数据库连接 Connectionconnection=DriverManager.getConnection("jdbc:mysql://localhost...
Connection conn = DriverManager.getConnection(url, username, password);Statement stmt = conn.createStatement();stmt.executeUpdate("INSERT INTO table_name (column1, column2,...) VALUES (value1, value2,...)");stmt.close();conn.close();六、多线程爬虫 在进行数据采集时，我们需要处理大量的网页...
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb","root","123456");Statement stmt = conn.createStatement();String sql ="INSERT INTO mytable (title, content) VALUES ('"+ title +"','"+ content +"')";stmt.executeUpdate(sql);8. Java爬虫实战案例 以下是一个...
intaffectedRows=stmt.executeUpdate("insert into tb values(now, 23, 10.3) (now + 1s, 20, 9.3)"); System.out.println("insert "+affectedRows+" rows."); now为系统内部函数,默认为客户端所在计算机当前时间。now + 1s代表客户端当前时间往后加 1 秒,数字后面代表时间单位:a(毫秒),s(秒),m(分)...
object with MySQL"); rssData = con.createSQLXML(); System.out.println("Creating DOMResult object"); DOMResult dom = (DOMResult)rssData.setResult(DOMResult.class); dom.setNode(doc); insertRow.setSQLXML(2, rssData); System.out.println("Running executeUpdate()"); insertRow.executeUpdate()...