After tomcat is deployed, an error occurs when the foreground returns to the page

After tomcat is deployed, an error occurs when the foreground returns to the page Let's take a look at the details

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<div class="app" style="开发者_Python百科margin: 10px">
    <label class="title">图书信息修改</label>

    <sql:query dataSource="${snapshot}" var="bookre">
        SELECT * from `books_type`;
    </sql:query>

    <form class="input-box" action="/BookUpdateProceServlet" method="get">
        <%
            String id = request.getParameter("id");

            BookService bookService = new BookService();
            Book book = bookService.queryBook(id);

            out.print("<input type=\"text\" name=\"bookIdUpdate\" value=\"" + book.getBookId() + "\" style=\"display:none\" />");
            out.print("<input type=\"text\" name=\"bookNameUpdate\" class=\"table-add-text form-control text-flag\" placeholder=\"图书名称\" value=\"" + book.getBookName() + "\"/>");
            out.print("<input type=\"text\" name=\"bookAuthorUpdate\" class=\"table-add-text form-control text-flag\" placeholder=\"图书作者\" value=\"" + book.getBookAuthor() + "\"/>");
            out.print("<input type=\"text\" name=\"bookPriceNameUpdate\" class=\"table-add-text form-control text-flag\" placeholder=\"图书价格\" value=\"" + book.getBookPrice() + "\"/>");
        %>

An error occurred while modifying the data。 I hope he can run without errors, but I have been debugging for a long time without success