无法解析变量struts2中的错误
我的要求是，我试图从项目表中填充pid（projectid），从userdetails表中填充名称，作为表单的下拉列表。我是struts框架的新手。请有人给我们介绍一下这个问题好吗 代码如下： sprintform.jsp：无法解析变量struts2中的错误,struts2,Struts2,我的要求是，我试图从项目表中填充pid（projectid），从userdetails表中填充名称，作为表单的下拉列表。我是struts框架的新手。请有人给我们介绍一下这个问题好吗 代码如下： sprintform.jsp： <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> <%@ taglib prefix="s" uri="
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<?xml version="1.0" encoding="UTF-8" ?>
<!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>
<link href="css/jquery.ui.datepicker.css" rel="stylesheet"
type="text/css" />
<script src="js/jquery-1.7.1.min.js" type="text/javascript"></script>
<script src="js/jquery-ui-1.8.17.custom.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){$('.dateTxt').datepicker({
dateFormat : 'yy-mm-dd'
}); });
</script>
</head>
<body>
<h1 style="color: green">Sprint</h1>
<s:form action="sprintInsert" namespace="/" method="post"
name="sprintForm" theme="xhtml">
<s:textfield name="title:" size="40" maxlength="40" required="true"
label="Title" />
<p>
Begin Date: <input id="one" class="dateTxt" type="text"
name="begindate" />
</p>
<p>
End Date: <input id="two" class="dateTxt" type="text" name="enddate" />
</p>
<s:select label="ProjectId" headerKey="-1"
headerValue="Select Project Id" list="projectidList" name="pid" />
<%-- <s:select label="Owner" headerKey="-1"
headerValue="Select Sprint Owner" list="sprintownerList"
name="sprintowner" /> --%>
<tr>
<td>State:</td>
<td><select name="state">
<option value="">Choose a state..</option>
<option value="A">Active</option>
<option value="F">Future</option>
<option value="C">Close</option>
</select></td>
</tr>
<s:textfield name="targetestimatedpoints" size="40" maxlength="40"
required="true" label="Target Estimate pts:" />
<s:textfield name="totalestimatedpoints" size="40" maxlength="40"
required="true" label="Total Estimate pts:" />
<s:textfield name="totaldefaultestimatedhours" size="40"
maxlength="40" required="true" label="Total Detail Estimate Hrs: " />
<s:textfield name="todohours:" size="40" maxlength="40"
required="true" label="Total To Do Hrs:" />
<s:textfield name="description: :" size="40" maxlength="40"
required="true" label="Description: " />
<tr align="right">
<td><div align="center">
<input type="submit" value="save">
</div>
<td align="center"><input type="reset" value="Reset"></td>
</tr>
</s:form>
<s:if test="hasActionErrors()">
<div id="fieldErrors">
<s:actionerror />
</div>
</s:if>
</body>
</html>
package com.bits.sprintanalyzer.action;
import java.util.List;
import org.apache.log4j.Logger;
import com.bits.sprintanalyzer.ResourceException;
import com.bits.sprintanalyzer.dao.SprintDAO;
import com.opensymphony.xwork2.ActionSupport;
public class SprintAction extends ActionSupport {
private static final Logger LOG = Logger.getLogger(SprintAction.class);
/**
*
*/
private static final long serialVersionUID = -6257623073537028210L;
private String title;
private String begindate;
private String enddate;
private String pid;
private String sprintowner;
private String state;
private int targetestimatedpoints;
private int totalestimatedpoints;
private int totaldefaultestimatedhours;
private int todohours;
private String description;
public String getPid() {
return pid;
}
public void setPid(String pid) {
this.pid = pid;
}
public String getSprintowner() {
return sprintowner;
}
public void setSprintowner(String sprintowner) {
this.sprintowner = sprintowner;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public int getTargetestimatedpoints() {
return targetestimatedpoints;
}
public void setTargetestimatedpoints(int targetestimatedpoints) {
this.targetestimatedpoints = targetestimatedpoints;
}
public int getTotalestimatedpoints() {
return totalestimatedpoints;
}
public void setTotalestimatedpoints(int totalestimatedpoints) {
this.totalestimatedpoints = totalestimatedpoints;
}
public int getTotaldefaultestimatedhours() {
return totaldefaultestimatedhours;
}
public void setTotaldefaultestimatedhours(int totaldefaultestimatedhours) {
this.totaldefaultestimatedhours = totaldefaultestimatedhours;
}
public int getTodohours() {
return todohours;
}
public void setTodohours(int todohours) {
this.todohours = todohours;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String display() throws Exception {
return INPUT;
}
public String getBegindate() {
return begindate;
}
public void setBegindate(String begindate) {
this.begindate = begindate;
}
public String getEnddate() {
return enddate;
}
public void setEnddate(String enddate) {
this.enddate = enddate;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public List<String> getpidList() throws ResourceException {
return SprintDAO.getpidList();
}
public List<String> getOwnerList() throws ResourceException {
return SprintDAO.getOwnerList();
}
@Override
public void validate() {
}
@Override
public String execute() throws Exception {
LOG.info("title" + title);
LOG.info("begindate" + begindate);
LOG.info("enddate" + enddate);
LOG.info("pid" + pid);
LOG.info("sprintowner" + sprintowner);
LOG.info("state" + state);
LOG.info("targetestimatedpoints" + targetestimatedpoints);
LOG.info("totalestimatedpoints" + totalestimatedpoints);
LOG.info("totaldefaultestimatedhours" + totaldefaultestimatedhours);
LOG.info("todohours" + todohours);
LOG.info("description" + description);
// ProjectDAO.insert(projectname,description,scrummaster,productowner,begindate,enddate);
int i = SprintDAO.save(this);
if (i > 0) {
return "success";
}
return "error";
}
}
package com.bits.sprintanalyzer.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import com.bits.sprintanalyzer.ResourceException;
import com.bits.sprintanalyzer.action.SprintAction;
import com.bits.sprintanalyzer.util.ConnectionUtil;
public class SprintDAO {
private static final String PROJECTQUERY = "select pid from project";
private static final String USERQUERY = "select name from userdetail";
public static List<String> getpidList() throws ResourceException{
List<String> projectidList = new ArrayList<String>();
// this should be populated from DB
try (Connection con = ConnectionUtil.INSTANCE.getConnection();
PreparedStatement st = con.prepareStatement(PROJECTQUERY)){
ResultSet rs =st.executeQuery();
while(rs.next()){
projectidList.add(rs.getString(1));
}
return projectidList;
}
catch (SQLException | ResourceException e) {
throw new ResourceException("Failed to validate project id", e);
}
}
public static List<String> getOwnerList() throws ResourceException{
List<String> sprintownerList = new ArrayList<String>();
// this should be populated from DB
try (Connection con = ConnectionUtil.INSTANCE.getConnection();
PreparedStatement st = con.prepareStatement(USERQUERY)){
ResultSet rs =st.executeQuery();
while(rs.next()){
sprintownerList.add(rs.getString(1));
}
return sprintownerList;
}
catch (SQLException | ResourceException e) {
throw new ResourceException("Failed to validate productowner", e);
}
}
//insert into database
public static int save(SprintAction SA) throws Exception{
int status=0;
try{
Connection con = ConnectionUtil.INSTANCE.getConnection();
PreparedStatement ps = con.prepareStatement("insert into sprint(pid,title,begindate,enddate,owner,state,targetestimatedpoints,totalestimatedpoints,totaldefaultestimatedhours,todohours,description) values(?,?,?,?,?,?,?,?,?,?,?)");
ps.setString(1, SA.getPid());
ps.setString(2, SA.getTitle());
ps.setString(3, SA.getBegindate());
ps.setString(4, SA.getEnddate());
ps.setString(5, SA.getSprintowner());
ps.setString(6, SA.getState());
ps.setInt(7, SA.getTargetestimatedpoints());
ps.setInt(8, SA.getTotalestimatedpoints());
ps.setInt(9, SA.getTotaldefaultestimatedhours());
ps.setInt(10, SA.getTodohours());
ps.setString(11, SA.getDescription());
status=ps.executeUpdate();
}catch(Exception e){
e.printStackTrace();}
return status;
}
}
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
"/WEB-INF/classes/struts-2.1.7.dtd">
<struts>
<!--
You could also set the constants in the struts.properties file
placed in the same directory as struts.xml
-->
<constant name="struts.devMode" value="true" />
<package name="sprintanalyzer" extends="struts-default" namespace="/">
<!--
If no class attribute is specified the framework will assume success and
render the result index.jsp
If no name value for the result node is specified the success value is the default
-->
<action name="">
<result>/jsp/login.jsp</result>
</action>
<!--
If the URL is hello.action then call the execute method of class HelloWorldAction.
If the result returned by the execute method is success render the HelloWorld.jsp
-->
<action name="login" class="com.bits.sprintanalyzer.action.LoginAction"
method="execute">
<result name="success">/jsp/sprintanalyzer.jsp</result>
<result name="input">/jsp/login.jsp</result>
</action>
<action name="projectform" class="com.bits.sprintanalyzer.action.ProjectAction"
method="display">
<result name="input">/jsp/projectform.jsp</result>
</action>
<action name="projectInsert" class="com.bits.sprintanalyzer.action.ProjectAction"
method="execute">
<result name="success">/jsp/sprintanalyzer.jsp</result>
</action>
<action name="sprintform" class="com.bits.sprintanalyzer.action.SprintAction"
method="display">
<result name="input">/jsp/sprintform.jsp</result>
</action>
<action name="sprintInsert" class="com.bits.sprintanalyzer.action.SprintAction"
method="execute">
<result name="success">/jsp/sprintanalyzer.jsp</result>
</action>
</package>
</struts>
package com.bits.sprintanalyzer.action;
import org.apache.log4j.Logger;
import com.bits.sprintanalyzer.ResourceException;
import com.bits.sprintanalyzer.dao.LoginDAO;
import com.opensymphony.xwork2.ActionSupport;
public class LoginAction extends ActionSupport{
private static final Logger LOG = Logger.getLogger(LoginAction.class);
/**
*
*/
private static final long serialVersionUID = 6877145894906143530L;
private String username;
private String password;
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 validate(){
if (username==null || username.length()==0 || password ==null || password.length() ==0 )
addActionError(getText("User name or Password cannot be null"));
}
@Override
public String execute() throws Exception {
try{
if( LoginDAO.isValidUser(username, password) ){
return SUCCESS;
}
else
{
addActionError(getText("Invalid Username or Password"));
}
}catch(ResourceException e){
LOG.error("Failed to valid User", e);
addActionError(getText("Something Went wrong with DBConnection"));
}
return INPUT;
}
}
2016-10-01T18:55:04.396+0530|Warning: Servlet.service() for servlet jsp threw exception
tag 'select', field 'list', name 'pid': The requested list key 'projectidList' could not be resolved as a collection/array/map/enumeration/iterator type. Example: people or people.{name} - [unknown location]
at org.apache.struts2.components.Component.fieldError(Component.java:237)
at org.apache.struts2.components.Component.findValue(Component.java:358)
at org.apache.struts2.components.ListUIBean.evaluateExtraParams(ListUIBean.java:80)
at org.apache.struts2.components.Select.evaluateExtraParams(Select.java:105)
at org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:856)
at org.apache.struts2.components.UIBean.end(UIBean.java:510)
at org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:42)
at va:111)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
Establishing SSL connection without server's identity verification is not recommended.
According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set.
列表投影列表List projectdlist=new ArrayList（）时ArrayList projectdlist=new ArrayList（）
确保在实例化action类后访问列表，即调用相应的action。
如果您想在调用操作之前直接访问它，请将其设置为静态并在jsp中访问。请添加您获得的异常堆栈。无法解析的变量不够，需要检查哪个变量。嗨，Rohit，这是堆栈跟踪。在原始的post Rohit中粘贴了stacktrace。您的操作类是com.bits.sprintanalyzer.action.LoginAction，不知道其中发生了什么，请也添加它。还添加了MySQL数据库连接字符串。添加了登录代码。我添加了Rohit，但仍然失败，出现了相同的错误。您使用的是netbeans吗？NetBeans的默认设置是使用SSL。尝试使用以下“jdbc:mysql://localhost:3306/dbname?characterEncoding=UTF-8&useSSL=false“我使用eclipse IDE，想共享我的屏幕一次，并询问您实际使用的方法我在1个屏幕上工作过，但没有在这个屏幕上工作。我使用String url=“jdbc:mysql://localhost:3305/scrumdb?autoReconnect=true&useSSL=false";
Establishing SSL connection without server's identity verification is not recommended.
According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set.
jdbc:mysql://localhost:3306/dbname?autoReconnect=true&useSSL=false