在 Struts 动作类中，来自 jsp 的输入值为空.如何在 Action 类中访问注册表单输入值 [英] Input values from jsp are null in Struts action class. How to access the registration form input values in Action class
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问题描述
Registration.jsp:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"pageEncoding="ISO-8859-1"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><头><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>在此处插入标题</title><身体><中心><%@ taglib uri="/struts-tags" prefix="s"%><s:form action="getRegistered.action" method="post" validate="true"><div><表格><s:textfield label="First Name" key="firstname"/><s:textfield label="Last Name" key="lastname"/><s:password label="创建您的密码" key="regpassword"/><s:password label="Confirm your password" key="conpassword"/><s:textfield label="Email" key="regemail1"/><s:textfield label="Re-Type Email" key="conemail"/><s:textfield label="Phone" key="phone"/><tr><td><s:submit value="Register" theme="simple"/></td><td><s:submit value="Cancel" theme="simple" onclick="document.forms[0].action='login.jsp';"/></td></tr></s:form></中心></html>
我正在将寄存器输入值传递给 Action 类.
Struts.xml:<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE 支柱公共"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"http://struts.apache.org/dtds/struts-2.0.dtd"><支柱><package name="default" extends="struts-default"><action name="getLogin" class="login.action.LoginAction"方法=登录"><result name="success">/Success.jsp</result><result name="input">/LoginError.jsp</result></动作><action name="getRegistered" class="login.action.LoginAction"方法=注册"><interceptor-ref name="validation"><param name="excludeMethods">register</param></interceptor-ref><result name="success">/Success.jsp</result><result name="input">/login.jsp</result></动作></包></支柱>这是struts xml
LoginAction.java:包 login.action;导入 javax.servlet.http.HttpServletRequest;导入 javax.servlet.http.HttpServletResponse;导入 org.apache.struts2.interceptor.ServletRequestAware;导入 org.apache.struts2.interceptor.ServletResponseAware;导入 com.opensymphony.xwork2.ActionSupport;导入 login.service.LoginDao;导入 login.service.RegisterDao;@SuppressWarnings("串行")公共类 LoginAction 扩展 ActionSupport 实现 ServletRequestAware，ServletResponseAware {私人字符串用户名；私人字符串密码；私有 HttpServletRequest httpServletRequest;私人字符串名字；私人字符串姓氏；私人字符串注册密码；私人字符串密码；私人字符串regemail；私人字符串conemail;私人字符串电话；公共字符串寄存器(){RegisterDao rdao = new RegisterDao();System.out.println("firstname action::: "+firstname);rdao.registerdao(firstname,lastname,regpassword,conpassword,regemail,conemail,phone);返回成功；}公共字符串登录(){httpServletRequest.getSession().setAttribute("key", username);httpServletRequest.getSession().setAttribute("key", password);LoginDao db = new LoginDao();Boolean validate = db.loginresult(username, password);如果(验证 == 真){返回成功；} 别的 {返回输入；}}公共 HttpServletRequest getHttpServletRequest() {返回 httpServletRequest；}public void setHttpServletRequest(HttpServletRequest httpServletRequest) {this.httpServletRequest = httpServletRequest;}公共字符串 getFirstname() {返回名字；}public void setFirstname(String firstname) {this.firstname = 名字；}公共字符串 getLastname() {返回姓氏；}public void setLastname(String lastname) {this.lastname = 姓氏；}公共字符串 getRegpassword() {返回注册密码；}public void setRegpassword(String regpassword) {this.regpassword = regpassword;}公共字符串 getConpassword() {返回密码；}public void setConpassword(String conpassword) {this.conpassword = conpassword;}公共字符串 getRegemail() {返回regmail；}public void setRegemail(String regemail) {this.regemail = regemail;}公共字符串 getConemail() {返回锥形邮件；}公共无效setConemail(字符串conemail){this.conemail = 锥体邮件；}公共字符串 getPhone() {回电话；}公共无效setPhone(字符串电话){this.phone = 电话；}公共无效 setServletRequest(HttpServletRequest 请求){this.httpServletRequest = 请求；}公共字符串 getUsername() {返回用户名；}公共无效设置用户名(字符串用户名){this.username = 用户名；}公共字符串 getPassword() {返回密码；}public void setPassword(字符串密码){this.password = 密码；}@覆盖公共无效 setServletResponse(HttpServletResponse arg0) {//TODO 自动生成的方法存根}}当我提交注册表时，传递给 Action 类的输入值为空.如何在 register() 方法下访问 action 类中的注册值.
以上问题已解决.
现在我面临另一个奇怪的问题.. 当我提交表单 action = getLogin.action 时，它总是从拦截器返回 INPUT .我不想从验证器中排除方法登录.
我该如何解决?
当我像下面这样更改 struts xml 时，它重定向到成功 jsp.但我不想从验证中排除登录方法
<interceptor-ref name="defaultStack"><param name="validation.excludeMethods">登录</param></interceptor-ref><result name="success">/Success.jsp</result><result name="input">/LoginError.jsp</result></动作> 解决方案
您只使用了一个 Interceptor，您需要使用整个 Stack:
改变这个:
<param name="excludeMethods">register</param></interceptor-ref> 到这里
<param name="validation.excludeMethods">注册</param></interceptor-ref> Registration.jsp:
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<center>
<%@ taglib uri="/struts-tags" prefix="s"%>
<s:form action="getRegistered.action" method="post" validate="true">
<div>
<table>
<s:textfield label="First Name" key="firstname" />
<s:textfield label="Last Name" key="lastname" />
<s:password label="Create your password" key="regpassword" />
<s:password label="Confirm your password" key="conpassword" />
<s:textfield label="Email" key="regemail1" />
<s:textfield label="Re-Type Email" key="conemail" />
<s:textfield label="Phone" key="phone" />
<tr>
<td><s:submit value="Register" theme="simple"/></td>
<td><s:submit value="Cancel" theme="simple" onclick="document.forms[0].action='login.jsp';" /></td>
</tr>
</table>
</div>
</s:form>
</center>
</body>
</html>
I'm passing the register input values to Action class.
Struts.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="default" extends="struts-default">
<action name="getLogin" class="login.action.LoginAction"
method="login">
<result name="success">/Success.jsp</result>
<result name="input">/LoginError.jsp</result>
</action>
<action name="getRegistered" class="login.action.LoginAction"
method="register">
<interceptor-ref name="validation">
<param name="excludeMethods">register</param>
</interceptor-ref>
<result name="success">/Success.jsp</result>
<result name="input">/login.jsp</result>
</action>
</package>
</struts>
This is the struts xml
LoginAction.java:
package login.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.interceptor.ServletRequestAware;
import org.apache.struts2.interceptor.ServletResponseAware;
import com.opensymphony.xwork2.ActionSupport;
import login.service.LoginDao;
import login.service.RegisterDao;
@SuppressWarnings("serial")
public class LoginAction extends ActionSupport implements ServletRequestAware,
ServletResponseAware {
private String username;
private String password;
private HttpServletRequest httpServletRequest;
private String firstname;
private String lastname;
private String regpassword;
private String conpassword;
private String regemail;
private String conemail;
private String phone;
public String register(){
RegisterDao rdao = new RegisterDao();
System.out.println("firstname action::: "+firstname);
rdao.registerdao(firstname,lastname,regpassword,conpassword,regemail,conemail,phone);
return SUCCESS;
}
public String login() {
httpServletRequest.getSession().setAttribute("key", username);
httpServletRequest.getSession().setAttribute("key", password);
LoginDao db = new LoginDao();
Boolean validate = db.loginresult(username, password);
if (validate == true) {
return SUCCESS;
} else {
return INPUT;
}
}
public HttpServletRequest getHttpServletRequest() {
return httpServletRequest;
}
public void setHttpServletRequest(HttpServletRequest httpServletRequest) {
this.httpServletRequest = httpServletRequest;
}
public String getFirstname() {
return firstname;
}
public void setFirstname(String firstname) {
this.firstname = firstname;
}
public String getLastname() {
return lastname;
}
public void setLastname(String lastname) {
this.lastname = lastname;
}
public String getRegpassword() {
return regpassword;
}
public void setRegpassword(String regpassword) {
this.regpassword = regpassword;
}
public String getConpassword() {
return conpassword;
}
public void setConpassword(String conpassword) {
this.conpassword = conpassword;
}
public String getRegemail() {
return regemail;
}
public void setRegemail(String regemail) {
this.regemail = regemail;
}
public String getConemail() {
return conemail;
}
public void setConemail(String conemail) {
this.conemail = conemail;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public void setServletRequest(HttpServletRequest request) {
this.httpServletRequest = request;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Override
public void setServletResponse(HttpServletResponse arg0) {
// TODO Auto-generated method stub
}
}
When i submit the registration form , the input values pass to Action class is null. How can i access the registration values in action class under register() method.
The above issue is resolved .
Now i'm facing another strange issue .. When i submit the form action = getLogin.action , its always returning INPUT from the interceptor . I dont wish to exclude the method login from the validator.
How could i resolve it ?
When i change the struts xml like below , its redirecting to success jsp . But i dont want to exclude the login method from validation
<action name="getLogin" class="login.action.LoginAction"
method="login">
<interceptor-ref name="defaultStack">
<param name="validation.excludeMethods">login</param>
</interceptor-ref>
<result name="success">/Success.jsp</result>
<result name="input">/LoginError.jsp</result>
</action>
解决方案
You are using only one Interceptor, you need to use the whole Stack:
Change this:
<interceptor-ref name="validation">
<param name="excludeMethods">register</param>
</interceptor-ref>
to this
<interceptor-ref name="defaultStack">
<param name="validation.excludeMethods">register</param>
</interceptor-ref>
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