20

我下面的代码根据用户输入在数据库中查询一组行。我已经尝试并测试了 SQL Developer 内部的查询，它可以很好地返回正确的行。输入示例是：2013-01-22

但是由于java内部的某种原因，我收到了这个错误：

java.sql.SQLException: Invalid column index

控制台表明它在此行触发：

preparedStatement.setString(1, to);

完整的连接代码：

ResultSet rs = null;
        PreparedStatement preparedStatement = null;
        try {
            String strQuery =
                    "SELECT homes.home_id, homes.title, homes.description, homes.living_room_count, homes.bedroom_count, homes.bathroom_count, homes.price, homes.sqft,"
                    + " listagg(features.feature_name, '\n') WITHIN GROUP(ORDER BY features.feature_name) features, home_type.type_name"
                    + " FROM homes"
                    + " INNER JOIN bookings ON bookings.home_id <> homes.home_id"
                    + " INNER JOIN home_feature ON homes.home_id = home_feature.home_id"
                    + " INNER JOIN home_type ON home_type.type_code = homes.type_code"
                    + " INNER JOIN features ON home_feature.feature_id = features.feature_id"
                    + " WHERE bookings.booking_end < date '?'"
                    + " OR bookings.booking_start > date '?'"
                    + " GROUP BY homes.home_id, homes.title, homes.description, homes.living_room_count, homes.bedroom_count, homes.bathroom_count, homes.price, homes.sqft, home_type.type_name";

            preparedStatement = conn.prepareStatement(strQuery);//prepare the statement
            preparedStatement.setString(1, to);//insert
            preparedStatement.setString(2, from);//insert
            rs = preparedStatement.executeQuery();//execute query

完整的堆栈跟踪如下所示：

SEVERE: java.sql.SQLException: Invalid column index
at oracle.jdbc.driver.OraclePreparedStatement.setStringInternal(OraclePreparedStatement.java:5317)
at oracle.jdbc.driver.OraclePreparedStatement.setString(OraclePreparedStatement.java:5305)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.setString(OraclePreparedStatementWrapper.java:248)
at DB.DatabaseConnector.getPropertiesSearch(DatabaseConnector.java:258)
at DB.SearchServlet.doPost(SearchServlet.java:47)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)

SEVERE:     at oracle.jdbc.driver.OraclePreparedStatement.setStringInternal(OraclePreparedStatement.java:5317)
SEVERE:     at oracle.jdbc.driver.OraclePreparedStatement.setString(OraclePreparedStatement.java:5305)
SEVERE:     at oracle.jdbc.driver.OraclePreparedStatementWrapper.setString(OraclePreparedStatementWrapper.java:248)
SEVERE:     at DB.DatabaseConnector.getPropertiesSearch(DatabaseConnector.java:258)
SEVERE:     at DB.SearchServlet.doPost(SearchServlet.java:47)
SEVERE:     at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
SEVERE:     at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
SEVERE:     at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
SEVERE:     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
SEVERE:     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
SEVERE:     at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
SEVERE:     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
SEVERE:     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
SEVERE:     at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
SEVERE:     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
SEVERE:     at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
SEVERE:     at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
SEVERE:     at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
SEVERE:     at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
SEVERE:     at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
SEVERE:     at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
SEVERE:     at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
SEVERE:     at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
SEVERE:     at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
SEVERE:     at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
SEVERE:     at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
SEVERE:     at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
SEVERE:     at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
SEVERE:     at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
SEVERE:     at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
SEVERE:     at java.lang.Thread.run(Thread.java:722)

我不太清楚为什么在查询正常时会抛出错误是 SQL 开发人员。我正在使用甲骨文

编辑：

在同一方法中将结果集读入其中。然后将 home 对象传回：

HomeList homes = new HomeList();
homes = new HomeList(rs);

构造函数如下所示：

public HomeList(ResultSet rs) {
    this();
    try {
        while (rs.next()) {
               list.add(new Home(rs.getInt(1),   
                                 rs.getString(2),
                                 rs.getString(3),   
                                 rs.getInt(4),
                                 rs.getInt(5),
                                 rs.getInt(6),
                                 rs.getInt(7),
                                 rs.getInt(8),
                                 rs.getString(9),
                                 rs.getString(10)
                                     ));
        }//end while
    } catch (SQLException e) {
        e.printStackTrace();
    }//end try
}
4

3 回答 3

35

在查询字符串中的任何地方，通配符都应该?是'?'. 那应该可以解决问题。

编辑 ：

要添加它，您需要更改date '?'为to_date(?, 'yyyy-mm-dd'). 请尝试并告诉我。

于 2013-01-23T11:26:49.003 回答
2

正如@TechSpellBound 建议的那样，删除 ? 迹象。然后在连接字符串的每一行末尾添加一个空格字符。否则，整个查询将被发送为（仅使用其中的一部分作为示例）：.... WHERE bookings.booking_end < date ?OR bookings.booking_start > date ?GROUP BY ....

The ? and the OR needs to be seperated by a space character. Do it wherever needed in the query string.

于 2013-01-23T11:34:23.867 回答
0

在date '?'中， the'?'是带有 value 的文字字符串?，而不是参数占位符，因此您的查询没有任何参数。Thedate是从（文字）字符串到日期的简写形式。您需要替换date '?'为?实际有一个参数。

此外，如果您知道它是日期，则使用setDate(..)而不是setString(..)设置参数。

于 2013-01-23T11:33:54.463 回答