ExtJs 4.*、Guice3、MyBatis3、MySql架构的 弱权限管理框架 二

简要说明一下程序架构：

后台：先上图

第一篇文章中提到过，使用的Guice，那么跳转怎么弄得呢，自己借鉴写的，哈哈，核心跳转类ActionController，继承了HttpServlet，用于完成请求的处理和跳转，贴部分代码

package com.ginger.framework.dispatcher;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import com.ginger.auth.util.WebConstants;import com.ginger.framework.action.Action;import com.ginger.framework.exception.FrameworkException;import com.ginger.framework.exception.RequestParameterException;import com.ginger.framework.main.GuiceServlet;import com.ginger.framework.util.JsonUtil;import com.google.inject.Injector;/** * Action控制器类 */public class ActionController extends HttpServlet {private static final long serialVersionUID = -7320695308722530659L;// Action前缀private String actionPath = "";// 过滤的urlprivate String url_login = "";private String url_logout = "";// logger对象protected Log logger = LogFactory.getLog(ActionController.class);public void init() throws ServletException {super.init();// 获取Action路径actionPath = getServletContext().getInitParameter("path_of_action");if (null != actionPath && !actionPath.endsWith(".")) {actionPath += ".";}url_login = getServletContext().getInitParameter("url_login");url_logout = getServletContext().getInitParameter("url_logout");logger.info("Action path: " + actionPath);logger.info("过滤url: " + url_login + ";   " + url_logout);}protected void doGet(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException {doCommand(arg0, arg1);}protected void doPost(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException {doCommand(arg0, arg1);}/** * 处理HTTP请求 *  * @param req *            HttpServletRequest , Request * @param res *            HttpServletResponse , Response * @throws ServletException * @throws IOException */protected void doCommand(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException {Injector injector = GuiceServlet.getInjector();String username = "test";try {try {res.setCharacterEncoding("UTF-8");// 获取obj对象String obj = req.getParameter("obj");// 把所要请求的Action打印到日志中// 把当前用户名，请求Action的时间以及请求的Action的名字打印到日志中logger.info("[" + username + "] Session ID :[" + req.getRequestedSessionId() + "]");logger.info("[" + username + "] Remote Host  :[" + req.getRemoteAddr() + "]");logger.info("[" + username + "] User-Agent  :[" + req.getHeader("User-Agent") + "]");logger.info("[" + username + "] execute  Action is  :[" + obj + "] Start");String operType = req.getParameter("operType");String url = obj + "_" + operType;//sesson超时/*if (!url_login.equals(url) && !url_logout.equals(url)) {this.preHandle(req, res);}*/if (url_login.equals(url) || url_logout.equals(url)) {//this.preHandle(req, res);} else {//this.sessionValidate(req, res);}if (obj == null || obj.equals("")) {throw new RequestParameterException("");}// 获取提交方式，可以为ajax或common，默认为ajaxString method = req.getParameter("method");if (method == null) {method = "ajax";}// 获取动作，可以是validate或execute，默认是executeString todo = req.getParameter("todo");if (todo == null) {todo = "execute";}// 设置上下文环境ActionContext ac = ActionContext.getContext();ac.setServletContext(this.getServletContext());ac.setSession(req.getSession());ac.setRequest(req);ac.setResponse(res);ac.setParameter(req.getParameterMap());ac.setLocale(req.getLocale());String classname = actionPath + obj;// 通过反射，获取class类Class c = Thread.currentThread().getContextClassLoader().loadClass(classname);// 执行Action动作Object executeResult;if ("execute".equalsIgnoreCase(todo)) {try {Action proxyAction = (Action) injector.getInstance(c);executeResult = proxyAction.execute();} catch (Exception e) {logger.error(e.getMessage(), e);throw e;}if ("ajax".equalsIgnoreCase(method)) {PrintWriter out = res.getWriter();if (executeResult instanceof String) {out.write(executeResult.toString());} else {out.write(JsonUtil.toJson(executeResult));}out.close();} else if ("common".equalsIgnoreCase(method)) {return;}}logger.info("[" + username + "] execute  Action is  :[" + obj + "] End");} catch (RequestParameterException e) {logger.error(e.getMessage(), e);throw new FrameworkException("");} catch (ClassNotFoundException e) {logger.error(e.getMessage(), e);throw new FrameworkException("");} catch (Exception e) {logger.error(e.getMessage(), e);throw new FrameworkException("");}} catch (FrameworkException e) {logger.error(e.getMessage(), e);showError(req, res);}}/** * 处理错误信息 *  * @param req *            HttpServletRequest , Request对象 * @param res *            HttpServletResponse , Response对象 * @throws ServletException * @throws IOException */protected void showError(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException {String page = "page.error";getServletContext().getRequestDispatcher(page).forward(req, res);}/** * 验证用户登陆拦截器 *  * @author  * @date 2011-3-13 下午09:02:00 */public void sessionValidate(HttpServletRequest request, HttpServletResponse response) {// 如果session中没有user对象if (null == request.getSession().getAttribute(WebConstants.CURRENT_USER)) {String requestedWith = request.getHeader("x-requested-with");// ajax请求if (requestedWith != null && "XMLHttpRequest".equals(requestedWith)) {response.setHeader("session-status", "timeout");try {response.getWriter().print(WebConstants.TIME_OUT);return;} catch (IOException e) {e.printStackTrace();}}}}}

该Servlet类实现了前台请求类的实例化，当然对应的Action类要实现对应的接口才行，Action接口类很简单

package com.ginger.framework.action;import java.util.List;/** * Action接口，用户动作的抽象 * */public interface Action {/** * Action的执行方法，执行具体的业务逻辑 *  * @return Object * @throws Exception */public Object execute() throws Exception;/** * Action的校验方法，校验用户的输入是否正确֤ *  * @return List , 错误信息 * @throws Exception */public List validate() throws Exception;}

对应Action实现类

package com.ginger.auth.action.authority;import java.util.List;import javax.inject.Inject;import javax.servlet.http.HttpServletRequest;import org.apache.commons.lang.StringUtils;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import com.ginger.auth.obj.authority.BaseRoles;import com.ginger.auth.obj.common.Criteria;import com.ginger.auth.obj.common.ExceptionReturn;import com.ginger.auth.obj.common.ExtGridReturn;import com.ginger.auth.obj.common.ExtPager;import com.ginger.auth.obj.common.ExtReturn;import com.ginger.auth.service.authority.BaseRolesService;import com.ginger.framework.action.Action;import com.ginger.framework.dispatcher.ActionContext;/** * 角色 *  */public class RoleAction implements Action {private static final Log logger = LogFactory.getLog(RoleAction.class);HttpServletRequest request = ActionContext.getContext().getRequest();@Injectprivate BaseRolesService baseRolesService;public Object execute() throws Exception {String operType = request.getParameter("operType");if ("all".equals(operType)) {return this.all();}if ("save".equals(operType)) {return this.save();}if ("del".equals(operType)) {return this.delete();}return new ExtReturn(false, "找不到方法!");}public List validate() throws Exception {// TODO Auto-generated method stubreturn null;}/** * 查找所有的角色 */public Object all() {String roleName = request.getParameter("roleName");ExtPager pager = new ExtPager();Criteria criteria = new Criteria();// 设置分页信息if (pager.getLimit() != null && pager.getStart() != null) {criteria.setOracleEnd(pager.getLimit() + pager.getStart());criteria.setOracleStart(pager.getStart());}// 排序信息if (StringUtils.isNotBlank(pager.getDir()) && StringUtils.isNotBlank(pager.getSort())) {criteria.setOrderByClause(pager.getSort() + " " + pager.getDir());}if (StringUtils.isNotBlank(roleName)) {criteria.put("roleNameLike", roleName);}List<BaseRoles> list = this.baseRolesService.selectByExample(criteria);int total = this.baseRolesService.countByExample(criteria);logger.debug("total:{}" + total);return new ExtGridReturn(total, list);}/** * 保存角色信息 */public Object save() {try {BaseRoles role = new BaseRoles();String roleId = request.getParameter("roleId");role.setRoleId(roleId);String roleName = request.getParameter("roleName");role.setRoleName(roleName);String roleDesc = request.getParameter("roleDesc");role.setRoleDesc(roleDesc);if (StringUtils.isBlank(role.getRoleName())) {return new ExtReturn(false, "角色名称不能为空!");}String result = this.baseRolesService.saveRole(role);if ("01".equals(result)) {return new ExtReturn(true, "保存成功！");} else if ("00".equals(result)) {return new ExtReturn(false, "保存失败！");} else {return new ExtReturn(false, result);}} catch (Exception e) {logger.error("Exception: ", e);return new ExceptionReturn(e);}}/** * 删除该角色 */public Object delete() {try {String roleId = request.getParameter("roleId");if (StringUtils.isBlank(roleId)) {return new ExtReturn(false, "角色主键不能为空！");}Criteria criteria = new Criteria();criteria.put("roleId", roleId);String result = this.baseRolesService.deleteByPrimaryKey(criteria);if ("01".equals(result)) {return new ExtReturn(true, "删除成功！");} else if ("00".equals(result)) {return new ExtReturn(false, "删除失败！");} else {return new ExtReturn(false, result);}} catch (Exception e) {logger.error("Exception: ", e);return new ExceptionReturn(e);}}}

代替了Struts2，变得简答，灵活，自己想怎么搞都行。

Dao层使用了MyBatis，配合Guice，完美的实现了依赖注入和注解事务管理，一切变得如此简单，先到这。