Java调用 Oracle 函数

2014-11-24 17:40:14 · 作者: · 浏览: 0

大同小异的方法。


  CallableStatement cs;
  try {
  // 调用一个没有参数的函数; 函数返回 a VARCHAR
  // 预处理callable语句
  
  cs = connection.prepareCall("{ = call myfunc}");
  
  // 注册返回值类型
  cs.registerOutParameter(1, i);
  
  // Execute and retrieve the returned value
  cs.execute();
  String retValue = cs.getString(1);
  
  // 调用有一个in参数的函数; the function returns a VARCHAR
  cs = connection.prepareCall("{ = call myfuncin( )}");
  
  // Register the type of the return value
  cs.registerOutParameter(1, Types.VARCHAR);
  
  // Set the value for the IN parameter
  cs.setString(2, "a string");
  
  // Execute and retrieve the returned value
  cs.execute();
  retValue = cs.getString(1);
  
  // 调用有一个out参数的函数; the function returns a VARCHAR
  cs = connection.prepareCall("{ = call myfuncout( )}");
  
  // Register the types of the return value and OUT parameter
  cs.registerOutParameter(1, Types.VARCHAR);
  cs.registerOutParameter(2, Types.VARCHAR);
  
  // Execute and retrieve the returned values
  cs.execute();
  retValue = cs.getString(1);      // return value
  String outParam = cs.getString(2);  // OUT parameter
  
  // 调用有一个in/out参数的函数; the function returns a VARCHAR
  cs = connection.prepareCall("{ = call myfuncinout( )}");
  
  // Register the types of the return value and OUT parameter
  cs.registerOutParameter(1, Types.VARCHAR);
  cs.registerOutParameter(2, Types.VARCHAR);
  
  // Set the value for the IN/OUT parameter
  cs.setString(2, "a string");
  
  // Execute and retrieve the returned values
  cs.execute();
  retValue = cs.getString(1);      // return value
  outParam = cs.getString(2);      // IN/OUT parameter
  } catch (SQLException e) {
  }


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