mybatis获取不到表单传过来的Double值

传过去一直是NULL，输出表单内容看的话能看见传的值，F12里的network参数也是对的，

mybatis是持久层的框架,建议你贴点代码出来看看.

价格是Double类型，借阅数是Integer类型，现在发现Integer在后台也获取不到，都是NULL

                    下面是mybatis的xml
                    <sql id="selectBookListWhere">
    <where>
        <if test="book_name != '' and book_name != null">
            and book_name like "%"#{book_name}"%"
        </if>

        <if test="book_price != '' and book_price != null">
            and book_price = #{book_price}
        </if>

        <if test="book_type != '' and book_type != null">
            and book_type like "%"#{book_type}"%"
        </if>

        <if test="book_publisher != '' and book_publisher != null">
            and book_publisher like "%"#{book_publisher}"%"
        </if>

        <if test="book_borrowCount != null">
            and book_borrowCount = #{book_borrowCount}
        </if>

        <if test="book_borrowNow != null">
            and book_borrowNow = #{book_borrowNow}
        </if>
    </where>
</sql>

book_price，book_borrowCount ，book_borrowNow获取都是NULL




        <form class="form-inline" id = "search_book" method="post" action="${pageContext.request.contextPath}/book/list.action">
                        <div class="form-group">
                            <label for="bookName">书名&nbsp;</label> 
                            <input type="text" class="form-control" id="bookName" name="book_name" maxlength="20"/>
                        </div>

                        <div class="form-group">
                            <label for="bookPrice">价格&nbsp;</label>
                            <input type="text" class="form-control" id="bookPrice" name="book_price" maxlength="5"/>
                        </div>

                        <div class="form-group">
                            <label for="bookType">类别&nbsp;</label> 
                            <input type="text" class="form-control" id="bookType" name="book_type" maxlength="10"/>
                        </div>

                        <div class="form-group">
                            <label for="bookPublisher">出版商&nbsp;</label> 
                            <input type="text" class="form-control" id="bookPublisher" name="book_publisher" maxlength="10"/>
                        </div>

                        <div class="form-group">
                            <label for="bookBorrowCount">总借阅数&nbsp;</label> 
                            <input type="text" class="form-control" id="bookBorrowCount" name="book_borrowCount" maxlength="5"/>
                        </div>

                        <div class="form-group">
                            <label for="bookborrowNow">当前借阅数&nbsp;</label> 
                            <input type="text" class="form-control" id="bookborrowNow" name="book_borrowNow" maxlength="5"/>
                        </div>

                        <button type="submit" class="btn btn-primary">查询</button>
                </form>

你模糊查询的方法不对，建议更改

like concat('%',#{keyword},'%')更换这种写法，mybatis不能对数据库百分号那种很好识别

你这跟mybatis没啥关系吧，你是后台就是null了，证明你表单提交，后台就没接受好，就后面就不用说了，建议从表单提交，后台debug能看到值之后再向后看