第一次測試都沒過。。感覺代碼都是一樣的啊有沒有大佬幫我看看
package?com.imooc.util;
import?java.sql.Connection;
import?java.sql.DriverManager;
import?java.sql.SQLException;
/*
JDBC工具類
?*/
public?class?JDBCUtil?{
????/*
????獲取Connection
????@return所獲得的JDBC的Connection
?????*/
????public?static?Connection?getConnection()?throws?ClassNotFoundException,?SQLException?{
????????String?driverClass="com.mysql.jdbc.Driver";
????????String?url="jdbc:mysql:///spring_data";
????????String?user="root";
????????String?password="";
???????
????????Connection?connection=DriverManager.getConnection(url,?user,?password);
????????return?connection;
????}
}package?com.imooc.util;
import?org.junit.Assert;
import?org.junit.Test;
import?java.sql.Connection;
public?class?JDBCUtilTest?{
????@Test
????public??void??testGetConnection()?throws??Exception{
???????
????????Assert.assertNotNull(connection);
????}
}報的是下面這兩個代碼里我加粗了
at com.imooc.util.JDBCUtil.getConnection(JDBCUtil.java:20)
at com.imooc.util.JDBCUtilTest.testGetConnection(JDBCUtilTest.java:10)
2018-07-29
我的老哥?正確的問問題的方式是?貼出來報錯信息?你貼出來代碼?別人幾乎不看的?報錯信息最直觀?其實你什么地方錯了?仔細看報錯信息就好了?你這個報錯信息太少了?報錯信息要貼的話?全一點
目測你這個連接的時候就錯掉了?就沒有連接上
大概掃了下你代碼?好像是密碼沒有寫?又或者沒有導(dǎo)包?又或者導(dǎo)的驅(qū)動包不支持你的數(shù)據(jù)庫版本?
具體問題還要看詳細的報錯信息
2019-01-16
2018-07-30
"C:\Program Files\Java\jdk1.8.0_121\bin\java.exe" -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:\idea\IntelliJ IDEA 2018.1.6\lib\idea_rt.jar=6769:D:\idea\IntelliJ IDEA 2018.1.6\bin" -Dfile.encoding=UTF-8 -classpath "D:\idea\IntelliJ IDEA 2018.1.6\lib\idea_rt.jar;D:\idea\IntelliJ IDEA 2018.1.6\plugins\junit\lib\junit-rt.jar;D:\idea\IntelliJ IDEA 2018.1.6\plugins\junit\lib\junit5-rt.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sqljdbc41.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_121\jre\lib\rt.jar;D:\springdata\target\test-classes;D:\springdata\target\classes;C:\Users\41545\.m2\repository\junit\junit\4.12\junit-4.12.jar;C:\Users\41545\.m2\repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar" com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit4 com.imooc.util.JDBCUtilTest,testGetConnection
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.imooc.util.JDBCUtil.getConnection(JDBCUtil.java:18)
at com.imooc.util.JDBCUtilTest.testGetConnection(JDBCUtilTest.java:8)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Process finished with exit code -1
2018-07-29
加粗的兩行不見了。。