struts1.X总结(50-60)

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h1>登录(validator框架客户端验证(javascript))</h1>

<hr>

<html:javascript formName="loginForm"/>

<html:form action="login2.do" onsubmit="return validateLoginForm(this)">

username : <html:text property="username"/><br/>

password : <html:password property="password"/><br>

<html:submit/>

</html:form>

25、声明式异常

Action中

UserManager.getInstance().login(username, password);

return mapping.findForward("success");

业务逻辑记得先建立两个异常类

public void login(String username, String password) {

// if (!"admin".equals(username)) {

// throw new UserNotFoundException();

// }

// if (!"admin".equals(password)) {

// throw new PasswordErrorException();

// }

Struts配置文件中

定义全局异常

<global-exceptions>

<!-- 全局异常

-->

定义action

<action-mappings>

<action path="/login"

type="com.bjsxt.struts.LoginAction"

name="loginForm"

scope="request"

validate="false"

input="/login.jsp"

<!--

-->

</action>

Jsp页面

<html:errors/>

声明式异常传递一个站位附的办法

异常类中

public class UserNotFoundException extends RuntimeException {

public UserNotFoundException(String msg) {

super(msg);

}

业务调用中

public void login(String username, String password) {

// if (!"admin".equals(username)) {

// throw new UserNotFoundException(username);

// }

// if (!"admin".equals(password)) {

// throw new PasswordErrorException();

// }

26、个性化异常处理

建立资源文件

user.login.success={0},登录成功

user.not.found=用户不能找到，用户名称=[{0}]

user.password.error=密码错误

user.login.error=登录失败

建立一个异常处理类

public class ErrorCodeException extends RuntimeException {

private String errorCode;

private Object[] args;

//没有占位符

public ErrorCodeException(String errorCode) {

this(errorCode, null);

}

//有一个占位符的

public ErrorCodeException(String errorCode, Object args0) {

this(errorCode, new Object[]{args0});

}

//有多个占位符的

public ErrorCodeException(String errorCode, Object[] args) {

this.errorCode = errorCode;

this.args = args;

}

public String getErrorCode() {

return errorCode;

}

public Object[] getArgs() {

return args;

}

业务调用类

public void login(String username, String password) {

// if (!"admin".equals(username)) {

// throw new ErrorCodeException("user.not.found", username);

// }

// if (!"admin".equals(password)) {

// throw new ErrorCodeException("user.password.error");

// }

Struts配置文件

先建立一个继承handle 类复写里面的一点方法

public class ErrorCodeExceptionHandler extends ExceptionHandler {

public ActionForward execute(

Exception ex,

ExceptionConfig ae,

ActionMapping mapping,

ActionForm formInstance,

HttpServletRequest request,

HttpServletResponse response)

throws ServletException {

//写下面的if方法

if (!(ex instanceof ErrorCodeException)) {

return super.execute(ex, ae, mapping, formInstance, request, response);

}

ActionForward forward = null;

ActionMessage error = null;

String property = null;

// Build the forward from the exception mapping if it exists

// or from the form input

if (ae.getPath() != null) {

forward = new ActionForward(ae.getPath());

} else {

forward = mapping.getInputForward();

}

// Figure out the error

if (ex instanceof ModuleException) {

error = ((ModuleException) ex).getActionMessage();

property = ((ModuleException) ex).getProperty();

} else {

//修改下面

ErrorCodeException ece = (ErrorCodeException)ex;

String errorCode = ece.getErrorCode();

Object[] args = ece.getArgs();

error = new ActionMessage(errorCode, args);

property = error.getKey();

//error = new ActionMessage(ae.getKey(), ex.getMessage());

//property = error.getKey();

}

this.logException(ex);

// Store the exception

request.setAttribute(Globals.EXCEPTION_KEY, ex);

this.storeException(request, property, error, forward, ae.getScope());

return forward;

}

写struts配置文件的这里

全局异常

<exceptionkey="error.exception" type="com.bjsxt.struts.AppException" handler="com.bjsxt.struts.AppExceptionHandler"/>

27、不要个性化异常

建立一个异常类

public class AppException extends RuntimeException {

public AppException(String msg) {

super(msg);

}

业务调用

public void login(String username, String password) {

if (!"admin".equals(username)) {

throw new AppException("用户不能找到，用户=【" + username + "】");

}

if (!"admin".equals(password)) {

throw new AppException("密码不正确!");

}

Struts配置文件

<exceptionkey="error.exception" type="com.bjsxt.struts.AppException"/>

配置资源文件

error.exception={0}

没有必要建立一个异常处理类

28、forwardaction的使用

只要这样配置就能转向了不用配置action

<action path="/login1"

type="org.apache.struts.actions.ForwardAction"

parameter="/login.jsp"

></action>

29、Dispatchaction

页面转向window.self.location = "usermaint.do?command=find&userId=" + document.getElementsByName("selectFlag")[j].value;

采用DispathAction

* 如果覆写DispathAction中的execute方法，必须显示的用super调用execute方法

* parameter参数值不能是execute或perform

30、容错处理//可以去掉查找所有用户的方法

protected ActionForward unspecified(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws Exception {

System.out.println("-----------UserAction.unspecified()-----------");

//调用业务逻辑操作

List userList = UserManager.getInstance().findAllUserList();

request.setAttribute("userlist", userList);

return mapping.findForward("list_success");

// ActionForward af = new ActionForward();

// af.setPath("/user/usermaint.do?command=list");

// af.setRedirect(true);

// return af;

}

31、模式匹配

建立三个页面

Add—success.jsp

Del-success.jsp

Modify-success.jsp

Jdp页面中

Struts配置

<action path="/user/*"

type="com.bjsxt.struts.UserAction"

parameter="command"

<!--

-->

</action>

Action中

return mapping.findForward("success");

33、补充说明

要把所有的jsp放到web-inf下浏览器是不能访问得到的，只有通过Action才能访问得到

注意图片的现实只与basename有关系也目录无关系

../img

<action path="/basedata/additem"与下面无关

<forwardname="upload_detail" path="/WEB-INF/jsp/basedata/item_upload.jsp"/>

验证用户存在与否

建立一个基本的action，然后其他action继承它就可以了！

public class BaseAction extends DispatchAction {

@Override

public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

if (request.getSession().getAttribute("user") == null) {

return mapping.findForward("index");

}

return super.execute(mapping, form, request, response);

}

其他action

public class ItemAction extends BaseAction {

注意返回的设置要带上返回的差数

否则用过滤类来保存

或用threadlocal做传递

function goBack() {

window.self.location = "item.do?command=list&pageNo=${itemForm.pageNo}&pageSize=${itemForm.pageSize}";

}

下拉选择列表的写法

<c:forEach items="${drp:getItemUnitList()}" var="iu" >

<c:set var="select" value=""/>

<c:if test="${ iu.id eq item.unit.id }">

<c:set var="select" value="selected"/>

</c:if>

</c:forEach>

</select></td>

分页补充

function resetItem() {

document.getElementsByName("clientIdOrName").value = "";

}

function topPage() {

window.self.location = "item.do?command=list&pageNo=${pagemodel.topPageNo}&pageSize=${itemForm.pageSize}&clientIdOrName=${ itemForm.clientIdOrName }"

}

function previousPage() {

window.self.location = "item.do?command=list&pageNo=${pagemodel.previousPageNo}&pageSize=${itemForm.pageSize}&clientIdOrName=${ itemForm.clientIdOrName }"

}

function nextPage() {

window.self.location = "item.do?command=list&pageNo=${pagemodel.nextPageNo}&pageSize=${itemForm.pageSize}&clientIdOrName=${ itemForm.clientIdOrName }"

}

function bottomPage() {

window.self.location = "item.do?command=list&pageNo=${pagemodel.bottomPageNo}&pageSize=${itemForm.pageSize}&clientIdOrName=${ itemForm.clientIdOrName }"

}

按键事件的设置

function myOnkeypress() {

if (window.event.keyCode == 13) {

queryItem();

}

单元格中