JDBC对数据库连接问题

问题遇到的现象和发生背景

遇到的现象和发生背景，请写出第一个错误信息

用代码块功能插入代码，请勿粘贴截图。 不用代码块回答率下降 50%

@Test
public void tsetUserDelete(){
String sql = "delete from user where id = ?";
update(sql,7);

}



//通用的增删改操作
@Test
public void update(String sql,Object ...args)  {
    Connection conn = null;
    PreparedStatement ps = null;
    try {
        //1.获取数据库的连接
        conn = JDBCUtils.getConnection();
        //2.预编译sql语句,返回PreparedStatement的实例
        ps = conn.prepareStatement(sql);
        //3.填充占位符
        for (int i = 0;i Object(i + 1,args[i]);//小心参数的声明
        }
        //4.执行
        ps.execute();
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        //5.资源的关闭
        JDBCUtils.closeResource(conn,ps);
    }

}

org.junit.runners.model.InvalidTestClassError: Invalid test class 'com.wenzuhui.preparedstatement.crud.PreparedStatementUpdateTest':

1. Method update should have no parameters

at org.junit.runners.ParentRunner.validate(ParentRunner.java:525)
at org.junit.runners.ParentRunner.(ParentRunner.java:102)
at org.junit.runners.BlockJUnit4ClassRunner.(BlockJUnit4ClassRunner.java:84)
at org.junit.runners.JUnit4.(JUnit4.java:23)
at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:10)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:70)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:37)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:70)
at org.junit.internal.requests.ClassRequest.createRunner(ClassRequest.java:28)
at org.junit.internal.requests.MemoizingRequest.getRunner(MemoizingRequest.java:19)
at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:36)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:50)
at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)

运行结果及详细报错内容

我跟着尚硅谷的视频 jdbc第16集的代码报异常了 求解答

我的解答思路和尝试过的方法，不写自己思路的，回答率下降 60%

我想要达到的结果，如果你需要快速回答，请尝试 “付费悬赏”

Test注解的方法不应该有参数

单元测试类中，单测方法不要有 入参，如下即可：

@Test
public void test() {
    // 测试代码
}