The jsp code and page are as follows
<body ><br> <div align="center"> <a href="listAllDataInfo">显示所有</a> <table width="500" border="1" class="table"> <tbody align="center"> <tr> <td colspan="5" style="font-size: 20;">指标信息</td> <tr> <td width="105">指标编码</td> <td width="300">指标名称</td> <td>填写数值</td> </tr> <!--循环显示记录部分 --> <s:iterator value="list" > <tr class="br_TR"> <td><s:property value="indexCode"/></td> <td><s:property value="indexName"/></td> <td><input name="" /></td> </s:iterator> </tbody> </table> </div> </body>
I first display each record in the database Index table through s:iterator, and then add after each record on the text box.
Here comes the problem, I want to enter a value into each text box, and then store all the values in the database object, and each value corresponds to a record. How to realize this dynamically displayed stored value?
Reply to the discussion (solution)
When iterating, add an ID to each INPUT element, and then add a button to get all INPUT after clicking it. The value is sent to the backend for storage.
When iterating, add an ID to each INPUT element, and then add a button. After clicking, get the value of all INPUT and send it to the backend for storage.
How to write the id element in the input of the jsp page? The id of each row of input should be different, right? There should be some variable filled in the id, right? Can you follow the example I gave?
When iterating, add an ID to each INPUT element, and then add a button. After clicking, get the value of all INPUT and send it to the backend for storage.
How to write the id element in the input of the jsp page? The id of each row of input should be different, right? There should be some variable filled in the id, right? Can you follow the example I gave?
<body ><br> <div align="center"> <a href="listAllDataInfo">显示所有</a> <table width="500" border="1" class="table"> <tbody align="center"> <tr> <td colspan="5" style="font-size: 20;">指标信息</td> <tr> <td width="105">指标编码</td> <td width="300">指标名称</td> <td>填写数值</td> </tr> <!--循环显示记录部分 --> <s:iterator value="list" > <tr class="br_TR"> <td><s:property value="indexCode"/></td> <td><s:property value="indexName"/></td> <td><input id="<s:property value="indexCode"/>" /></td> </s:iterator> </tbody> </table> </div> </body>
When iterating, add an ID to each INPUT element, and then add a button. After clicking, get the value of all INPUT and send it to Save on the end.
Thank you for your patience,
"
The attributes of the list itself are used, but I want to use this 6 records exist in another database table, not in the list table. What should I do?
s: It seems that the iterator tag can only traverse a list, right?
I don’t understand your needs. Don’t you want to save the value in the input to the database? Where to store it depends entirely on how your backend runs. JS does not store the database, it can only send requests to the backend for processing.
I don’t understand your needs. Don’t you want to save the value in the input to the database? Where to store it depends entirely on how your backend runs. JS does not store the database, it can only send requests to the backend for processing.
Sorry, the requirement was not made clear before.
There are three tables, Index table, data table and user table. Each user data corresponds to data data with indefinite bars.
The index table contains indicator names and indicator codes (as shown in the figure). It only stores some basic information of the data such as names, but does not store specific data.
The data table is dedicated to storing data. As shown in the figure, there are a total of 6 indicators, then if I fill in 6 texts, there will be 6 records stored in the data table. If I only fill in 4 texts, and the remaining 2 are left blank, click submit. , there are only 4 records stored in the data table.
In order to achieve this requirement, what should I do?
<s:form action="updateAllDataInfo" method="post"> <table width="500" border="1" class="table"> <tbody align="center"> <tr> <td colspan="5" style="font-size: 20;">指标信息</td> </tr> <tr> <td width="105">指标编码</td> <td width="300">指标名称</td> <td>填写数值</td> </tr> <!--循环显示记录部分 --> <s:iterator value="list" status="status" > <tr > <td><s:property value="indexCode"/></td> <td><s:property value="indexName"/></td> <td><input type="text" name="dataInfoList[#status.index].indexValue" style="width:100"/></td> </tr> </s:iterator> <s:submit value="保存" align="center" />
I wonder what my method above is like? But the dataInfoList[#status.index].indexValue value cannot be passed to the action
public String updateAll() throws Exception{ System.out.println("开始"); // List<IndexInfo> list = (List<IndexInfo>)session.get("list"); for(int i = 0; i < dataInfoList.size(); i++) { dataInfoBiz.addDataInfo(dataInfoList.get(i)); } return this.listAll(); } private List
I suggest you the best Debug both the front-end and the back-end to see what the format of the data sent by the front-end is, and then the back-end obtains the data according to the format.
What is the difference between an HTML tag and an HTML attribute?May 14, 2025 am 12:01 AMHTMLtagsdefinethestructureofawebpage,whileattributesaddfunctionalityanddetails.1)Tagslike,,andoutlinethecontent'splacement.2)Attributessuchassrc,class,andstyleenhancetagsbyspecifyingimagesources,styling,andmore,improvingfunctionalityandappearance.
The Future of HTML: Evolution and TrendsMay 13, 2025 am 12:01 AMThe future of HTML will develop in a more semantic, functional and modular direction. 1) Semanticization will make the tag describe the content more clearly, improving SEO and barrier-free access. 2) Functionalization will introduce new elements and attributes to meet user needs. 3) Modularity will support component development and improve code reusability.
Why are HTML attributes important for web development?May 12, 2025 am 12:01 AMHTMLattributesarecrucialinwebdevelopmentforcontrollingbehavior,appearance,andfunctionality.Theyenhanceinteractivity,accessibility,andSEO.Forexample,thesrcattributeintagsimpactsSEO,whileonclickintagsaddsinteractivity.Touseattributeseffectively:1)Usese
What is the purpose of the alt attribute? Why is it important?May 11, 2025 am 12:01 AMThe alt attribute is an important part of the tag in HTML and is used to provide alternative text for images. 1. When the image cannot be loaded, the text in the alt attribute will be displayed to improve the user experience. 2. Screen readers use the alt attribute to help visually impaired users understand the content of the picture. 3. Search engines index text in the alt attribute to improve the SEO ranking of web pages.
HTML, CSS, and JavaScript: Examples and Practical ApplicationsMay 09, 2025 am 12:01 AMThe roles of HTML, CSS and JavaScript in web development are: 1. HTML is used to build web page structure; 2. CSS is used to beautify the appearance of web pages; 3. JavaScript is used to achieve dynamic interaction. Through tags, styles and scripts, these three together build the core functions of modern web pages.
How do you set the lang attribute on the tag? Why is this important?May 08, 2025 am 12:03 AMSetting the lang attributes of a tag is a key step in optimizing web accessibility and SEO. 1) Set the lang attribute in the tag, such as. 2) In multilingual content, set lang attributes for different language parts, such as. 3) Use language codes that comply with ISO639-1 standards, such as "en", "fr", "zh", etc. Correctly setting the lang attribute can improve the accessibility of web pages and search engine rankings.
What is the purpose of HTML attributes?May 07, 2025 am 12:01 AMHTMLattributesareessentialforenhancingwebelements'functionalityandappearance.Theyaddinformationtodefinebehavior,appearance,andinteraction,makingwebsitesinteractive,responsive,andvisuallyappealing.Attributeslikesrc,href,class,type,anddisabledtransform
How do you create a list in HTML?May 06, 2025 am 12:01 AMTocreatealistinHTML,useforunorderedlistsandfororderedlists:1)Forunorderedlists,wrapitemsinanduseforeachitem,renderingasabulletedlist.2)Fororderedlists,useandfornumberedlists,customizablewiththetypeattributefordifferentnumberingstyles.
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
SublimeText3 Chinese version
Chinese version, very easy to use
WebStorm Mac version
Useful JavaScript development tools
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver Mac version
Visual web development tools
