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這裏不更新是視圖:記錄預處理語句
<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://xmlns.jcp.org/jsf/html"
xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
<h:head>
<title>Books </title>
</h:head>
<h:body>
<h:link value="Add Books" outcome="addBook.xhtml"></h:link>
<table border="1">
<tr>
<td><b>ID</b> </td>
<td><b>Title</b> </td>
<td><b>Year</b> </td>
<td><b>ISBN</b> </td>
<td><b>Total</b> </td>
<td><b>Remaining</b></td>
</tr>
<ui:repeat value="#{booksController.fetch_book_data}" var="r">
<tr>
<h:form>
<td><h:inputText value="#{r.id}"></h:inputText></td>
<td><h:inputText value="#{r.title}"></h:inputText> </td>
<td><h:inputText value="#{r.year}"></h:inputText> </td>
<td><h:inputText value="#{r.isbn}"></h:inputText> </td>
<td><h:inputText value="#{r.total}"></h:inputText> </td>
<td><h:inputText value="#{r.remaining}"></h:inputText></td>
<td><h:commandButton value="update record" action="#{book.setUpdateBook_data()}"/></td>
</h:form>
</tr>
</ui:repeat>
</table>
</h:body>
</html>
View
數據提交setUpdateBook_data()
這裏是它的定義:
public String setUpdateBook_data() throws SQLException {
this.setRemaining(this.getTotal());
Statement stmt = con.createStatement();
String query = "UPDATE books SET title=? , year123=? , isbn=? , total=? , remaining=? where id=?";
PreparedStatement preparedStatement = con.prepareStatement(query);
preparedStatement.setString(1, this.getTitle());
preparedStatement.setString(2, this.getYear());
preparedStatement.setString(3, this.getIsbn());
preparedStatement.setInt(4, this.getTotal());
preparedStatement.setInt(5, this.getRemaining());
preparedStatement.setInt(6, this.getId());
preparedStatement.executeUpdate();
preparedStatement.close();
stmt.close();
return "success";
}
當數據被提交的申請顯示沒有錯誤,但記錄沒有被更新。我錯過了什麼?
我已經從Netbeans直接測試下面的查詢,它在那裏工作,但不在這裏。
UPDATE books SET title='qqq' , year123='3009' , isbn='123456asdfgh' , total=10 , remaining=5 where id=5
試過了,仍然沒有工作。 – user4913383
您是否調試過您的應用程序,並檢查傳遞給查詢的所有值是否是您期望它們的值? –
我只確保我使用這種方法發送正確的值http://superuser.com/questions/395919/where-is-the-post-tab-in-chrome-developer-tools-network但是我不'不知道如何在NetBeans中調試JSF應用程序。當我標記了一些斷點時,控制並沒有停在那裏。 – user4913383