strusts2对于action请求的编码优化

大家对struts2的使用都很了解，每个请求对应一个action这样就会增多很多的配置，所有的action类都是继承了ActionSupport，而大部分人都会写一个自己的BaseAction，处理一些文件上传下载request，response、分页的处理。在这里分享一个处理action请求的小技巧。

代码

/** * <p> * Title: Admin Action基类 *  * @author huicheng yang * @version 1.0 */public class BaseAdmin extends ActionSupport {/** *  */private static final long serialVersionUID = -7728309960568975048L;private static final Log logger = LogFactory.getLog(BaseAdmin.class);private String remoteAddress;private String refererUrl;private AdminCookie adminCookie;private String curPath;private String curAction;private HttpServletRequest request;private HttpServletResponse response;private String c = "index";/** * 页码 */private int curPage = 1;@SuppressWarnings("unchecked")protected String executeMethod(String method) {try {Class[] c = null;Method m = this.getClass().getMethod(method, c);Object[] o = null;String result = (String) m.invoke(this, o);return result;} catch (Throwable e) {e.printStackTrace();logger.error("executeMethod", e);return ERROR;}}public String execute() {try {return this.executeMethod(this.getC());} catch (Throwable e) {logger.error("executeMethod", e);return ERROR;}}public String getRemoteAddress() {return remoteAddress;}public void setRemoteAddress(String remoteAddress) {this.remoteAddress = remoteAddress;}public HttpServletRequest getRequest(){if (request == null) {request = ServletActionContext.getRequest();}return request;}public HttpServletResponse getResponse(){if (response == null) {response = ServletActionContext.getResponse();}return response;}/** * @return the curPage */public int getCurPage() {return curPage;}/** * @param curPage *            the curPage to set */public void setCurPage(int curPage) {this.curPage = curPage;}public String getRefererUrl() {return refererUrl;}public void setRefererUrl(String refererUrl) {this.refererUrl = refererUrl;}public String getC() {return c;}public void setC(String c) {this.c = c;}public String getCurPath() {return curPath;}public void setCurPath(String curPath) {this.curPath = curPath;}public String getCurAction() {return curAction;}public void setCurAction(String curAction) {this.curAction = curAction;}public AdminCookie getAdminCookie() {return adminCookie;}public void setAdminCookie(AdminCookie adminCookie) {this.adminCookie = adminCookie;}}

在baseaction里声明一个c变量代表要提交的action的方法名

protected String executeMethod(String method) {try {Class[] c = null;Method m = this.getClass().getMethod(method, c);Object[] o = null;String result = (String) m.invoke(this, o);return result;} catch (Throwable e) {e.printStackTrace();logger.error("executeMethod", e);return ERROR;}}

通过代理调用的方法

public String execute() {try {return this.executeMethod(this.getC());} catch (Throwable e) {logger.error("executeMethod", e);return ERROR;}}

在execute方法中使用executeMethod(),传入需要调用的方法名。

我们的其他的action类都继承baseaction这样在前台的调用的时候我们不用在strusts配文件配置多个action方法，localhost:8080/[项目名]/User.action?c=login只需要传入一个参数代表调用方法名即可 execute()方法会根据我们的传入的参数名称调用相应的方法。

如果项目用的是annotations那我我们只需要创建好action类定义相应的方法就可以了。。