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POGetting null pointer in hibernate dao when calling from jsp
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copied!<p>Here is my code in jsp,</p> <pre><code> <% JSonHandler jSonHandler = new JSonHandler(); jSonHandler.setList(jSonHandler.getHolidayDetails()); JSONArray obj = jSonHandler.getJsonArray(); %> </code></pre> <p>And from the JSonHandler class ,I am calling a hibernateDAO method that returns an arraylist of object. But I've got a null pointer instead.</p> <p>This is my JSonHandler class</p> <pre><code>public class JSonHandler { private LeaveAdminDAO leaveAdminDAO = new LeaveAdminHibernateDAO(); private Map<String, String> map; private List<Map<String, String>> list; public List<Map<String, String>> getHolidayDetails() { Calendar currentDate = Calendar.getInstance(); int year = currentDate.get(Calendar.YEAR); List<Holidays> holidayDetails = leaveAdminDAO.getHolidayDetails(year); map = new TreeMap<String, String>(); list = new ArrayList<Map<String, String>>(); for(int i=0; i<holidayDetails.size(); i++) { map.put("title", holidayDetails.get(0).getHolidayDescription()); map.put("start", new SimpleDateFormat("yyyy-MM-dd").format(holidayDetails.get(0).getHolidayDate())); list.add(map); } return list; } public List<Map<String, String>> getList() { return list; } public void setList(List<Map<String, String>> list) { this.list = list; } public JSONArray getJsonArray() { JSONArray obj = JSONArray.fromObject(list); return obj; } </code></pre> <p>Someone help me thanks in advance.</p> <p>StackTrace:</p> <pre><code>java.lang.NullPointerException com.experion.lts.util.JSonHandler.getHolidayDetails(JSonHandler.java:28) org.apache.jsp.views.markholidays_jsp._jspService(markholidays_jsp.java:72) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:968) org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:653) org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:647) org.apache.tiles.jsp.context.JspTilesRequestContext.include(JspTilesRequestContext.java:103) org.apache.tiles.jsp.context.JspTilesRequestContext.dispatch(JspTilesRequestContext.java:96) org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44) org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106) org.apache.tiles.renderer.impl.ChainedDelegateAttributeRenderer.write(ChainedDelegateAttributeRenderer.java:76) org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:670) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:336) org.apache.tiles.template.InsertAttributeModel.renderAttribute(InsertAttributeModel.java:210) org.apache.tiles.template.InsertAttributeModel.end(InsertAttributeModel.java:126) org.apache.tiles.jsp.taglib.InsertAttributeTag.doTag(InsertAttributeTag.java:311) org.apache.jsp.views.layout.MainLayout_jsp._jspx_meth_tiles_005finsertAttribute_005f2(MainLayout_jsp.java:196) org.apache.jsp.views.layout.MainLayout_jsp._jspService(MainLayout_jsp.java:111) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:241) org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:222) org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44) org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:670) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:690) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:644) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:627) org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:321) org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124) org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) javax.servlet.http.HttpServlet.service(HttpServlet.java:617) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) com.experion.lts.filters.SecurityFilter.doFilter(SecurityFilter.java:48) </code></pre> <p>DAO Code:</p> <pre><code>public List<Holidays> getHolidayDetails(int year) { try { List<Holidays> holidayDetails = getHibernateTemplate().find("from Holidays where holidayId = 1"); return holidayDetails; } catch(Exception e) { e.printStackTrace(); return null; } } </code></pre>

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