This could be a repeat question, I apologize. I have a jsp page in which I have some buttons. Each button has its own servlet to call. I want to know if there is any way I can call these servlets without using form because the user may choose any of the 3 functionalities given. I also need to pass a value from the jsp page to the servlets I call.
JavaScript
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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Configurations</title> <script type="text/javascript"> function runConfiguration(){ var config=${dataValues.get(0)}; //call servlet } function editConfiguration(){ var config=${dataValues.get(0)}; //call servlet } function deleteConfiguration(){ var config=${dataValues.get(0)}; //call servlet } </script> </head> <body> <% String[] label={"Master Port","Baud Rate","Char Size","Stop Bits","Parity","RTU Port","Baud Rate","Char Size","Stop Bits", "Parity"}; int i=0; %> <br> <br> <br> <table align="center" border="1"> <td><div align="center" style="background-color: goldenrod;"><b> ${dataValues.get(0)}</b></div> <table width="210" align="left" border="1"> <td bgcolor="goldenrod"><b> Header1 </b></td> <c:forEach var="data" begin="1" end="5" items="${dataValues}" varStatus="status"> <tr> <td><%=label[i++]%>: ${data}</td> </tr> </c:forEach> </table> <table width="210" align="left" border="1"> <td bgcolor="goldenrod"><b> Header2 </b></td> <c:forEach var="data" begin="6" end="10" items="${dataValues}" varStatus="status"> <tr> <td><%=label[i++]%>: ${data}</td> </tr> </c:forEach> </table> </td> </table> <c:choose> <c:when test="${dataValues.get(11)==1}"> <p align="center"><b><i>This configuration is already running</i></b></p> <p align="center"> <input type="button" value="stop" onclick="StopConfiguration"/> </p> </c:when> <c:otherwise> <p align="center"><b><i>This configuration is currently NOT running</i></b></p> <p align="center"> <button type="button" onclick="runConfiguration()">Run</button> <button type="button" onclick="editConfiguration()">Edit</button> <button type="button" onclick="deleteConfiguration()">Delete</button> </p> </c:otherwise> </c:choose> </body> </html> Advertisement
Answer
I see 2 options here:
Changing a form’s URL accordingly to each button using JavaScript, right before sendiing a POST request;
Use a form and the same servlet for all 3 cases. In the servlet you should determine what button has been pressed (their values are passed as a request parameter) and then go forward accordingly.