Question

这是我的java代码

public static Map<String,String> propertyFileReader() {
    Map<String, String> map=new HashMap<String, String>();
    Properties prop = new Properties();
    try {
        InputStream inputStream = Util.class.getClassLoader().getResourceAsStream("jdbc.properties");
        prop.load(inputStream);

        final String DB_DRIVER= prop.getProperty("DB_DRIVER");
        final String DB_CONNECTION = prop.getProperty("DB_CONNECTION2");
        final String DB_USER = prop.getProperty("DB_USER");
        final String DB_PASSWORD = prop.getProperty("DB_PASSWORD");

        map.put("DB_DRIVER",DB_DRIVER);
        map.put("DB_CONNECTION",DB_CONNECTION);
        map.put("DB_USER",DB_USER);
        map.put("DB_PASSWORD",DB_PASSWORD);

    } catch (IOException e) {
        e.printStackTrace();
    }

    return map;
}

private static Connection getDBConnection() {
    Map<String , String > map=new HashMap<String, String>();
    map=propertyFileReader();
    String DB_DRIVER=map.get("DB_DRIVER");
    String DB_CONNECTION= map.get("DB_CONNECTION");
    String DB_USER=map.get("DB_USER");
    String DB_PASSWORD=map.get("DB_PASSWORD");
    Connection dbConnection = null;
    try {
        Class.forName(DB_DRIVER);
    } catch (ClassNotFoundException e) {
        System.out.println(e.getMessage());
    }
    try {
        dbConnection = DriverManager.getConnection(DB_CONNECTION,DB_USER,DB_PASSWORD);
        return dbConnection;
    } catch (SQLException e) {
        System.out.println(e.getMessage());
    }
    return dbConnection;
}

这是我的属性文件

DB_DRIVER = "oracle.jdbc.driver.OracleDriver";
DB_CONNECTION2 = "jdbc:oracle:thin:@10.2.5.23:1521:dbslic";
DB_USER = "TSR_MOBILE";
DB_PASSWORD = "TSR_MOBILE";

我将ojdbc6.jar添加到我的buildpath [尝试使用ojdbc14.jar]

但是有一个错误，如下所示

No suitable driver found for "jdbc:oracle:thin:@10.2.5.23:1521:dbslic";
"oracle/jdbc/driver/OracleDriver";
No suitable driver found for "jdbc:oracle:thin:@10.2.5.23:1521:dbslic";
[ERROR] Exception occurred while trying to invoke service method loginBlock
java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.axis2.rpc.receivers.RPCUtil.invokeServiceClass(RPCUtil.java:212)
    at org.apache.axis2.rpc.receivers.RPCMessageReceiver.invokeBusinessLogic(RPCMessageReceiver.java:117)
    at org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:40)
    at org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:114)
    at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:181)
    at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:172)
    at org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:146)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:643)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
    at mainService.TSR_WEB_SERVICE.loginBlock(TSR_WEB_SERVICE.java:416)
    ... 25 more

请帮我解决这个问题

Answer 1

您使用了错误的包来引用OracleDriver类
改变

oracle.jdbc.driver.OracleDriver

到

oracle.jdbc.OracleDriver

From oracle docs课程定义

public class OracleDriver
              extends oracle.jdbc.driver.OracleDriver

实现java.sql.Driver接口的Oracle JDBC驱动程序类。

Answer 2

将其用作Oracle驱动程序

oracle.jdbc.OracleDriver

而不是

oracle.jdbc.driver.OracleDriver

Answer 3

这个答案太迟了，但是被接受的答案是不正确的，所以我把这个帖子发布给任何不幸的人，试图复制/粘贴代码并想知道出了什么问题。

到目前为止，公认的答案是正确的

oracle.jdbc.driver.OracleDriver

已过时，但仍可在2020年使用。所发布代码的问题在于，属性文件使用分号和引号（not valid）。因此，从更改属性文件

DB_DRIVER = "oracle.jdbc.driver.OracleDriver";
DB_CONNECTION2 = "jdbc:oracle:thin:@10.2.5.23:1521:dbslic";
DB_USER = "TSR_MOBILE";
DB_PASSWORD = "TSR_MOBILE";

到

DB_DRIVER = oracle.jdbc.driver.OracleDriver
DB_CONNECTION2 = jdbc:oracle:thin:@10.2.5.23:1521:dbslic
DB_USER = SR_MOBILE
DB_PASSWORD = TSR_MOBILE

使错误消失。

找不到合适的驱动程序“jdbc：oracle：thin：@ ****”oracle / jdbc / driver / OracleDriver“;

3 个答案: