Library学习日志（……）
添加Library在buildpath中，就是右键工程->properties->java buildpath->Libraries
然后点击add Library就是添加Library 根据提示添加即可，
向已有Library中添加jar，添加内部的点击add jar；添加外部的点击add External JARS；
其中有一个WebLibrary可能已经存在于工程中了，但在工程树中找不到，解决办法就是手动把referenceLibrary中的jar拷到WebINF下的lib文件夹中就可以了。
在一个Web应用中表单form的生命周期：
以登录所用的登录表单为例介绍：
login.jsp： <form name="form1" method="post" action="manager.do?action=login">
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
以上是Web.xml
structs-config.xml:
<action name="managerForm" path="/manager" scope="request" type="com.action.Manager" validate="true">
<forward name="managerQuery" path="/manager.jsp" />
<forward name="managerLoginok" path="/main.jsp" />
<forward name="managerAdd" path="/manager_ok.jsp?para=1" />
<forward name="managerQueryModify" path="/manager_Modify.jsp" />
Manager.java:
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
String action = request.getParameter("action");
System.out.println("获取的查询字符串：" + action);
if (action == null || "".equals(action)) { /*如果没有操作的动作*/
return mapping.findForward("error");
} else if ("login".equals(action)) { /*如果是处理管理员登陆*/
return managerLogin(mapping, form, request, response);
} else if ("managerAdd".equals(action)) {
return managerAdd(mapping, form, request, response);
} else if ("managerQuery".equals(action)) {
return managerQuery(mapping, form, request, response);
} else if ("managerModifyQuery".equals(action)) {
return managerModifyQuery(mapping, form, request, response);
} else if ("managerModify".equals(action)) {
return managerModify(mapping, form, request, response);
} else if ("managerDel".equals(action)) {
return managerDel(mapping, form, request, response);
} else if ("querypwd".equals(action)) {
return pwdQuery(mapping, form, request, response);
} else if ("modifypwd".equals(action)) {
return modifypwd(mapping, form, request, response);
}
request.setAttribute("error", "操作失败！");
return mapping.findForward("error");
}
public ActionForward managerLogin(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
ManagerForm managerForm = (ManagerForm) form;
managerForm.setName(managerForm.getName());
managerForm.setPwd(managerForm.getPwd());
/*将存有管理员信息的formbean传递给DAO业务层处理(查询是否存在该管理员帐号和密码)*/
int ret = managerDAO.checkManager(managerForm);
System.out.print("验证结果ret的值:" + ret);
/*业务层如果返回１，表示验证成功*/
if (ret == 1) {
/*将用户帐号保存在session中*/
HttpSession session = request.getSession();
session.setAttribute("manager", managerForm.getName());
/*交给控制器，跳转到登陆成功的页面*/
return mapping.findForward("managerLoginok");
} else {
request.setAttribute("error", "您输入的管理员名称或密码错误！");
return mapping.findForward("error");
}
}
具体的处理就是以上这些内容，form的传递以及request的整个处理过程。
至于让人费解的这一个action的内容
<form name="form1" method="post" action="manager.do?action=login">
可以用一下这张图来解释：
