【使用ResourceBundle时无法读取.properties文件 _JDBC 】

使用ResourceBundle时无法读取.properties文件

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JDBC

详细描述

错误截图

源码

private static ResourceBundle rb = ResourceBundle.getBundle("mysql.properties");

    static {
        DRIVER = rb.getString("jdbc.driver");
        URL = rb.getString("jdbc.url");
        USERNAME = rb.getString("jdbc.username");
        PASSWORD = rb.getString("jdbc.password");
        try {
            Class.forName(DRIVER);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
            System.out.println("加载驱动失败");
        }
    }

java.lang.NoClassDefFoundError: Could not initialize class com.hzw.util.DBUtil

at com.hzw.dao.impl.StudentDaoImpl.addStu(StudentDaoImpl.java:33)
	at com.hzw.dao.impl.StudentDaoImplTest.addStu(StudentDaoImplTest.java:21)
	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.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99)
	at org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81)
	at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
	at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
	at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
	at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:71)
	at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)
	at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
	at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
	at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:121)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$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

编辑于2024-11-24

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[西安|荣耀师兄]JAVA-韩忠伟
0

这是因为使用ResourceBundle来读取的文件如果是读取的文件带有“properties”后缀名，它会从工程根目录下找，这显然和我的本意是不一样的。如果是到classes下则去掉后缀就可以了。所以改成ResourceBundle gisResource = ResourceBundle.getBundle("mysql);则通过，成功读取.properties文件，初始化DBUtil类成功

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编辑于2018-04-13

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