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Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.12.4:test (default-test) on project SpringCRUD: There are test failures.Please refer to D:\mycode\springCRUD\target\surefire-reports for the individual test results.解决方法：这是因为测试代码

package getmail;import java.util.ArrayList;import java.util.List;import java.util.Properties;import java.util.logging.Level;import java.util.logging.Logger;import javax.mail.Folder;import javax.mail.Message;import javax.mail.MessagingException;i

以管理员身份进入dos命令窗口进入java JDK的bin目录下执行以下命令keytool -genkey -alias android.keystore -keyalg RSA -validity 20000 -keystore android.keystore将生成的文件移动到别的盘，否则打包调用的时候会无法调用...

String uri = "";//域名 // String uri = "http://localhost"; URL url = new URL(uri + "/");//方法名 HttpURLConnection connection = (HttpURLConnection) url .openConnection(); connection.setDoInput(true); // 设置可输入 connection.set...

初始化数据库驱动String URL = "jdbc:mysql://127.0.0.1:3306/gpu?characterEncoding=utf-8&serverTimezone=UTC"; String USER = "root"; String PASSWORD = "root"; Class.forName("com.mysql.cj.jdbc.Driver"); Connection conn = DriverManager.getConnection(U

import java.util.Random;import java.util.Timer;public class TimeTest { public static void main(String[] args) { Timer timer = new Timer(); timer.schedule(new ReciveMailUtil(), 1000, 150 * 1000);//（几秒后，执行频率） }}在ReciveMailUtil中添加public class Re

数据库不能直接3306访问 通过ssh连接 ，转发到本地端口，代码如下import java.util.Timer;import com.jcraft.jsch.JSch;//需要一个jar包 public static void go() { try { JSch jsch = new JSch(); com.jcraft.jsch.Session session = jsch.getSession("username", "ip", 22); session.set

报异常了是乱码的，不知道是什么错 ，修改异常编码格式public static void main(String args[]) throws UnsupportedEncodingException { try { } catch (Exception e) { StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); e.printStackTrace(pw);

ReciveMail.javapackage getemail;import java.text.*;import java.util.*;import javax.mail.*;import javax.mail.internet.*;/** * @author liqiang * @date 2020/5/27 16:19 * @param * @return * 说明：邮件对象 */public class ReciveMail { private MimeMes

com.mysql.jdbc.Driver 是 mysql-connector-java 5中的，com.mysql.cj.jdbc.Driver 是 mysql-connector-java 6版本以上的解决办法1、用com.mysql.cj.jdbc.Driver替换com.mysql.jdbc.Driver；2、直接继续用com.mysql.jdbc.Driver，只是会出现警告，不影响操作...

今天写一个数据库插入数据时报了这个错解决方案：在项目代码-数据库连接URL后，加上 ?serverTimezone=UTC（注意大小写必须一致）解决问题String URL = “jdbc:mysql://127.0.0.1:3306/gpu?characterEncoding=utf-8&serverTimezone=UTC”;...

ResultSet count = dal.selectSql(sql); int rowCount = 0; while(count.next()) { rowCount++; }