package demo.utils;



import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCUtils {
     public static String driver ="oracle.jdbc.oracleDriver";
     public static String url="jdbc：oracle:thin:@localhost:ocrl";
     public static String user="scott";
     public static String passworld="tiger";
     
     //注册数据库驱动
     static {
    	 try {
			Class.forName(driver);
			// DriverManager.registerDriver(driver);
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			throw new ExceptionInInitializerError(e);
		}
     }
    //获取数据库连接
     public static Connection getConnection(){
    	    try {
				return DriverManager.getConnection(url, user, passworld);
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
    	    return null;
     }
     //释放数据库资源
     public static void release(Connection conn,Statement call,ResultSet rt){
    	 if(rt!=null){
    		 try {
				rt.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}finally{
				rt=null;
			}
    		 if (call!=null){
    			  try {
					((Connection) call).close();
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}finally{
					call=null;
				}
    		 }
    		 if (conn!=null){
    			 try {
					conn.close();
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}finally{
					conn=null;
				}
    		 }
    	 }
     }
}
package demo.oracle;

import java.sql.CallableStatement;
import java.sql.Connection;

import org.junit.Test;

import demo.utils.JDBCUtils;
import oracle.jdbc.internal.OracleTypes;

public class TestFunction {
	@Test
      public void  testFunction(){
    	     String sql="?call qureyempincome(?)";
    	      Connection  conn=null;
    	      CallableStatement call=null;
    	      try {
    	    	//得到数据库链接
    	    	  conn=JDBCUtils.getConnection();
    	    	//基于链接创建statement
    	    	  call=conn.prepareCall(sql);
    	    	  //对于输出参数 申明
    	    	  call.registerOutParameter(1,OracleTypes.NUMBER);
    	    	  // 对于输入参数 赋值 
    	    	  call.setInt(2, 7839);
    	    	  //执行调用
    	    	  call.execute();
    	    	  //取年收入的结果输出
    	    	  double income =call.getDouble(1);
    	    	  System.out.println("该员工的年收入是："+income);
    	      }catch(Exception e){
    	    	  e.printStackTrace();
    	      }finally{
    	    	  JDBCUtils.release(conn, call, null);
    	      }
      }
}

java.lang.ClassNotFoundException: oracle.jdbc.oracleDriver

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 demo.utils.JDBCUtils.<clinit>(JDBCUtils.java:20)

at demo.oracle.TestFunction.testFunction(TestFunction.java:19)

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.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)

at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)