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POHow To Display Database Queries Into Table Using Java Servlets And Jsp?
 

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  1. POHow To Display Database Queries Into Table Using Java Servlets And Jsp?
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    <p>I'm very new to web development, so bear with me =)</p> <p>Ok here is my tech stack I'm working with SQL Server 2008 R2, Tomcat Server 6.0, Java 1.6, jQuery,</p> <p>Here is my problem.</p> <p>I have a bunch of report type queries I need to run, and I need to display those results as a table on a JSP page for the user to see. The problem I am running into is the method of how to do this.</p> <p>Most online examples show to store the results of the query in a ResultSet, and putting it into an ArrayList with JavaBeans setters/getters, and then calling that Arraylist in the JSP.</p> <p>Another problem is, all these queries have different column headers, and these examples do not show how to dynamically create the column headings (most examples are hardcoded).</p> <p>Here is an example of what I can do so far to generate a report:</p> <pre><code> //inside the servlet and sets stuff inside a JavaBean public List&lt;ClaimInfoBean&gt; getClaimInfo() throws SQLException { List&lt;ClaimInfoBean&gt; claimList = new ArrayList&lt;ClaimInfoBean&gt;(); while (results.next()) { ClaimInfoBean claim = new ClaimInfoBean(); claim.setClaimNum(results.getString(1)); //set more stuff for the bean } claimList.add(claim); } </code></pre> <p>On the JSP page</p> <pre><code> //scriptlet (I know this isnt the best way, but only relevant example I can find) List&lt;ClaimInfoBean&gt; claimList = claimData.getClaimInfo(); Iterator&lt;ClaimInfoBean&gt; claimListIterator = claimList.iterator(); ClaimInfoBean claim; while ( claimListIterator.hasNext() ) { claim = ( ClaimInfoBean ) claimListIterator.next(); //call getXXX to plug into a table </code></pre> <p>For this servlet, all I care about is running x query, to display y table, when a user clicks a link. This servlet should take any query and display any kind of table, so the way I shown above is very restrictive.</p> <p>Any help in the right direction would be appreciated!</p>
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    1. USSamuel Liew
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    1. COThat's why ORM frameworks and IDEs with code generators exist. For example, http://www.eclipse.org/webtools/dali/ and http://netbeans.org/kb/docs/web/jsf20-crud.html
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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