Struts2 应用程序示例

package com.project.customization.action; import java.util.HashMap; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import java.util.Set; import java.util.regex.Pattern; import org.apache.log4j.Logger; import com.opensymphony.xwork2.Action; import com.opensymphony.xwork2.ActionSupport; import com.opensymphony.xwork2.Preparable; import com.project.customization.service.CustXMLBeanService; import com.project.customization.service.CustomizationService; import com.project.customization.vo.CustomizationAttributeVO; import com.project.customization.vo.CustomizationVO; import com.project.customization.web.CustomizationSessionContext; public class CustomizationAction extends ActionSupport implements Preparable { private static Logger logger = Logger.getLogger(CustomizationAction.class); private CustomizationVO ngContainerVO; private CustomizationAttributeVO attributeVO; private String submit; private List<CustomizationVO> uiContainerList; private String userId; private CustomizationService customizationService; private Map<String, String> modifiedAttributes = new LinkedHashMap<String, String>(); public void prepare() throws Exception { } public String login() { return Action.SUCCESS; } public String reLogin() { addActionMessage("User Session has expired. Please login"); return Action.SUCCESS; } public String actionLogin() { if (userId == null || userId.trim().length() <= 0) { addActionError("Please enter a valid user Id"); return "failure"; } CustomizationSessionContext.initialize(userId); return Action.SUCCESS; } public String logout() { addActionMessage("Thank you for using the application."); CustomizationSessionContext.logout(); return Action.SUCCESS; } public String list() throws Exception { uiContainerList = CustXMLBeanService.getInstance().listNGUICustomization(); return Action.SUCCESS; } public String display() throws Exception { ngContainerVO = loadData(); return Action.SUCCESS; } private CustomizationVO loadData() { return getCustomizationService().getLoggedInUserCustomizationVO(ngContainerVO.getId()).clone(); } public String submit() throws Exception { logger.debug("[Enter] Submit"); validateInput(); if (!hasFieldErrors()) { CustomizationVO storeDataVO = loadData(); for (int i = 0; i < ngContainerVO.getNgAttributes().size(); i++) { CustomizationAttributeVO modifiedAttributeVO = ngContainerVO.getNgAttributes().get(i); CustomizationAttributeVO savedAttributeVO = storeDataVO.getNgAttributeMap().get(modifiedAttributeVO.getId()); String savedValue = savedAttributeVO.getValue(); if ((savedValue == null && !isStringEmpty(modifiedAttributeVO.getValue())) || (modifiedAttributeVO.getValue() == null && !isStringEmpty(savedValue)) || (savedValue != null && !savedValue.equals(modifiedAttributeVO.getValue()) && !(isStringEmpty(savedValue) && isStringEmpty(modifiedAttributeVO .getValue())))) { String value = modifiedAttributeVO.getValue(); if (savedAttributeVO.getDisplayType().equals("select")) { value = (String) savedAttributeVO.getEnumValues().get(modifiedAttributeVO.getValue()); } else if (savedAttributeVO.getDisplayType().equals("check") && isStringEmpty(modifiedAttributeVO.getValue())) { value = "none"; } else if (savedAttributeVO.getDisplayType().equals("check")) { Set<String> valueList = modifiedAttributeVO.getValueSet(); StringBuffer values = new StringBuffer(""); for (String val : valueList) { values.append(savedAttributeVO.getEnumValues().get(val)).append(", "); } if(values.length() > 0) { value = values.toString().substring(0,values.length() -2); } } modifiedAttributes.put(savedAttributeVO.getDisplayName(), value); } } CustomizationSessionContext.getSessionContext().setAttribute("modified.customization.vo", ngContainerVO); CustomizationSessionContext.getSessionContext().setAttribute("modified.attributes", modifiedAttributes); return display(); } else { // TODO-VENKAT: any other better approach to avoid merging CustomizationVO storeDataVO = loadData(); // start merge for (int i = 0; i < storeDataVO.getNgAttributes().size(); i++) { CustomizationAttributeVO attributeVO = storeDataVO.getNgAttributes().get(i); attributeVO.setValue(ngContainerVO.getNgAttributes().get(i).getValue()); } ngContainerVO = storeDataVO; return "validationError"; } } private boolean isStringEmpty(String str) { return str == null || str.trim().length() <= 0 ? true : false; } public String actionConfirm() throws Exception { logger.debug("[Enter] actionConfirm"); if (getSubmit().equals("confirm")) { ngContainerVO = (CustomizationVO) CustomizationSessionContext.getSessionContext().getAttribute( "modified.customization.vo"); getCustomizationService() .save(ngContainerVO, CustomizationSessionContext.getSessionContext().getLoggedInUserId()); addActionMessage("User Customization Saved Successfully. Acknowledgment email has been sent."); } else { addActionMessage("User Customization changes Cancelled."); } //clean it up CustomizationSessionContext.getSessionContext().setAttribute("modified.customization.vo", null); CustomizationSessionContext.getSessionContext().setAttribute("modified.attributes", null); list(); return Action.SUCCESS; } private void validateInput() { // TODO-VENKAT: see if u eliminate creating clone objects for (int i = 0; i < ngContainerVO.getNgAttributes().size(); i++) { CustomizationAttributeVO attribvo = ngContainerVO.getNgAttributes().get(i); CustomizationAttributeVO metaDataVO = CustXMLBeanService.getInstance().getNgAttributeById( ngContainerVO.getId(), attribvo.getId()); if (metaDataVO.getRegex() != null && metaDataVO.getRegex().length() > 0) { logger.debug(metaDataVO.getRegex().trim() + " -- " + attribvo.getValue()); if (attribvo.getValue() == null) { attribvo.setValue(""); // else Pattern class throws // exception } if (!Pattern.matches(metaDataVO.getRegex().trim(), attribvo.getValue())) { addFieldError("ngContainerVO.ngAttributes[" + i + "].value", "Invalid Data for input field " + metaDataVO.getDisplayName()); } } } } public CustomizationVO getNgContainerVO() { return ngContainerVO; } public void setNgContainerVO(CustomizationVO ngContainerVO) { this.ngContainerVO = ngContainerVO; } public String getSubmit() { return submit; } public void setSubmit(String submit) { this.submit = submit; } public CustomizationAttributeVO getAttributeVO() { return attributeVO; } public void setAttributeVO(CustomizationAttributeVO attributeVO) { this.attributeVO = attributeVO; } public String getUserId() { return userId; } public void setUserId(String userId) { this.userId = userId; } public List<CustomizationVO> getUiContainerList() { return uiContainerList; } public void setUiContainerList(List<CustomizationVO> uiContainerList) { this.uiContainerList = uiContainerList; } public CustomizationService getCustomizationService() { return customizationService; } public void setCustomizationService(CustomizationService customizationService) { this.customizationService = customizationService; } public Map<String, String> getModifiedAttributes() { return modifiedAttributes; } public void setModifiedAttributes(Map<String, String> modifiedAttributes) { this.modifiedAttributes = modifiedAttributes; } }