我怎么感觉struts中所定义的FormBean没什么作用呢！

[zmrljl]

Formbean只使一些属性的枯燥定义，谁来说说·

[baitianhai]

package org.apache.struts.webapp.example;

import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;

public final class LogonForm extends ActionForm {

private String password = null;
private String username = null;

public String getPassword() {
return (this.password);
}

public void setPassword(String password) {
this.password = password;
}

public String getUsername() {
return (this.username);
}

public void setUsername(String username) {
this.username = username;
}

public void reset(ActionMapping mapping, HttpServletRequest request) {
this.password = null;
this.username = null;
}


/**
* Validate the properties that have been set from this HTTP request,
* and return an <code>ActionErrors</code> object that encapsulates any
* validation errors that have been found. If no errors are found, return
* <code>null</code> or an <code>ActionErrors</code> object with no
* recorded error messages.
*
* @param mapping The mapping used to select this instance
* @param request The servlet request we are processing
*/
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
ActionErrors errors = new ActionErrors();
if ((username == null) || (username.length() < 1))
errors.add("username", new ActionError("error.username.required"));
if ((password == null) || (password.length() < 1))
errors.add("password", new ActionError("error.password.required"));
return errors;
}
}

[baitianhai]

看看这个例子吧，它可以用来检验用户的输入Form是否正确,基本上可以用来代替客户端的javascript功能

[zmrljl]

那我在具体的程序中应该去如何去做呢，重写public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request)或public void reset(ActionMapping mapping, HttpServletRequest request)就可以了，struts什么时候调用呢》

[baitianhai]

教程
http://www.chinajavaworld.net/non-cgi/usr/48/48_46.doc
都在这里了
http://www.chinajavaworld.net/forum/jinghua.cgi?action=list&forum=48

[zmrljl]

好像没有我要问的 。

[freecode]

它用于保存页面上的值。
确实每个页面都做一个formbean让人感觉受不了

[ccjsmile]

看来很多人对于struts的工作流程不是很了解，建议看一些相关资料。
struts1.1可以不用为每个表单都做一个forumbean了，可以在struts-config.xml里设置。

[zmrljl]

yes

[zmrljl]

就是吗》》》太烦人！
to ccjsmile() :


怎么配置？？给出格式吧

[baitianhai]

晕倒，如果你不要这么做的话，可以不这么做，不就完了，用老办法吧

[zmrljl]

晕