Edit the JSP with Eclipse to call the Oracle process (through the Tomcat connection pool)

xiaoxiao2021-03-06  106

Third and fifth steps teach how to use Eclipse to compile JSP, skip this step directly to write with documents. You can also skip 3-4 to see you to see JavaBean to implement the calling process.

Step 1: Create an Oracle table

(We do demonstrate with a simple staff information table)

The second step: the establishment of an Oracle stored procedure CREATE OR REPLACE procedure emp_test (e_id number, e_name varchar2, e_dept varchar2, e_age number) asbegininsert into emp_info_test (emp_id, emp_name, emp_dept, emp_age, emp_login_time) values ​​(e_id, e_name, e_dept, e_age , sysdate;

Step 3: Create a Lomboz J2EE Project (Eclipse configuration method) with Eclipse) 1. Establish Lomboz J2EE Project 2. Set the project name -> Next -> Next 3. Set the web module and Servers module See below 4. Create a JSP file (I created the file named trypro)

Step 4: Write code for TryPro: (with Tomcat connection pool. Connection pool setting method See Tomcat and Oracle 3 connection methods)

<% @ page language = "java" contenttype = "text / html; charset = GB2312"%> <% @ Page Import = "java.sql. *"%> <% @ page import = "javax.sql. *" %> <% @ page import = "javax.naming. *"%> Lomboz JSP < / title> </ head> <body> <table> <tr> <TD> Employee ID </ td> <td> Employee Name </ TD> <TD> Office </ TD> <TD> Employee Age </ TD> <TD> Registration time </ td> </ tr> <% datasource ds = null; initialContext CTX = new initialContext (); DS = (Datasource) CTX.lookup ("java: comp / env / jdbc / oracle" Connection conn = ds.getConnection ();</p> <p>CallableStatement Empstmt = conn.preparecall ("{call Emp_test (?,?,?,?)}"); Empstmt.setint (1,101); Empstmt.setString (2, "Zhang San"); Empstmt.setString (3, " Personnel Department "); Empstmt.Setint (4, 36); Empstmt.executeUpdate ();</p> <p>Statement Stmt = Conn.createStatement (); ResultSet RS = Stmt.executeQuery ("SELECT * FROM EMP_INFO_TEST"); while (rs.next ()) {out.println ("<tr> <td>" rs.getstring 1) "</ td> <td>" rgetstring (2) "</ td> <td>" gtstring (3) "</ td> <td>" rgetstring (4) "</ td> <TD>" rgetstring (5) "</ td> </ tr>");</p> <p>CTX.Close (); rs.close (); stmt.close (); conn.close ();%> </ table> <p></p> <p></ body> </ html></p> <p>Step 5: Eclipse configures JSP to the server. Then display the result.</p> <p>Ok is very good!</p></div><div class="text-center mt-3 text-grey"> 转载请注明原文地址:https://www.9cbs.com/read-97378.html</div><div class="plugin d-flex justify-content-center mt-3"></div><hr><div class="row"><div class="col-lg-12 text-muted mt-2"><i class="icon-tags mr-2"></i><span class="badge border border-secondary mr-2"><h2 class="h6 mb-0 small"><a class="text-secondary" href="tag-2.html">9cbs</a></h2></span></div></div></div></div><div class="card card-postlist border-white shadow"><div class="card-body"><div class="card-title"><div class="d-flex justify-content-between"><div><b>New Post</b>(<span class="posts">0</span>) </div><div></div></div></div><ul class="postlist list-unstyled"> </ul></div></div><div class="d-none threadlist"><input type="checkbox" name="modtid" value="97378" checked /></div></div></div></div></div><footer class="text-muted small bg-dark py-4 mt-3" id="footer"><div class="container"><div class="row"><div class="col">CopyRight © 2020 All Rights Reserved </div><div class="col text-right">Processed: <b>0.043</b>, SQL: <b>9</b></div></div></div></footer><script src="./lang/en-us/lang.js?2.2.0"></script><script src="view/js/jquery.min.js?2.2.0"></script><script src="view/js/popper.min.js?2.2.0"></script><script src="view/js/bootstrap.min.js?2.2.0"></script><script src="view/js/xiuno.js?2.2.0"></script><script src="view/js/bootstrap-plugin.js?2.2.0"></script><script src="view/js/async.min.js?2.2.0"></script><script src="view/js/form.js?2.2.0"></script><script> var debug = DEBUG = 0; var url_rewrite_on = 1; var url_path = './'; var forumarr = {"1":"Tech"}; var fid = 1; var uid = 0; var gid = 0; xn.options.water_image_url = 'view/img/water-small.png'; </script><script src="view/js/wellcms.js?2.2.0"></script><a class="scroll-to-top rounded" href="javascript:void(0);"><i class="icon-angle-up"></i></a><a class="scroll-to-bottom rounded" href="javascript:void(0);" style="display: inline;"><i class="icon-angle-down"></i></a></body></html><script> var forum_url = 'list-1.html'; var safe_token = 'L_2BbNqy7trVTYIbTJ2B8hYcGkttTCMJJLXcD5x_2Fy6PdAdm1OmEq7OGBI9sYS_2BFisF7BZQYaiaBWSj4F9dgFcP6A_3D_3D'; var body = $('body'); body.on('submit', '#form', function() { var jthis = $(this); var jsubmit = jthis.find('#submit'); jthis.reset(); jsubmit.button('loading'); var postdata = jthis.serializeObject(); $.xpost(jthis.attr('action'), postdata, function(code, message) { if(code == 0) { location.reload(); } else { $.alert(message); jsubmit.button('reset'); } }); return false; }); function resize_image() { var jmessagelist = $('div.message'); var first_width = jmessagelist.width(); jmessagelist.each(function() { var jdiv = $(this); var maxwidth = jdiv.attr('isfirst') ? first_width : jdiv.width(); var jmessage_width = Math.min(jdiv.width(), maxwidth); jdiv.find('img, embed, iframe, video').each(function() { var jimg = $(this); var img_width = this.org_width; var img_height = this.org_height; if(!img_width) { var img_width = jimg.attr('width'); var img_height = jimg.attr('height'); this.org_width = img_width; this.org_height = img_height; } if(img_width > jmessage_width) { if(this.tagName == 'IMG') { jimg.width(jmessage_width); jimg.css('height', 'auto'); jimg.css('cursor', 'pointer'); jimg.on('click', function() { }); } else { jimg.width(jmessage_width); var height = (img_height / img_width) * jimg.width(); jimg.height(height); } } }); }); } function resize_table() { $('div.message').each(function() { var jdiv = $(this); jdiv.find('table').addClass('table').wrap('<div class="table-responsive"></div>'); }); } $(function() { resize_image(); resize_table(); $(window).on('resize', resize_image); }); var jmessage = $('#message'); jmessage.on('focus', function() {if(jmessage.t) { clearTimeout(jmessage.t); jmessage.t = null; } jmessage.css('height', '6rem'); }); jmessage.on('blur', function() {jmessage.t = setTimeout(function() { jmessage.css('height', '2.5rem');}, 1000); }); $('#nav li[data-active="fid-1"]').addClass('active'); </script>