package com.dao;import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;import org.apache.struts2.interceptor.SessionAware;import com.bean.fwxx;
import com.bean.users;public class UserDaoImp implements IUserDao, SessionAware {
Map session; public List allselect() {
// TODO Auto-generated method stub
String sql = "select top 10 * from TBL_FWXX order by date";
ResultSet re = getsql.getResultSet(sql);
List list = new ArrayList();
try {
while (re.next()) {
fwxx fw = new fwxx();
fw.setTitle(re.getString("title"));
fw.setZj(re.getString("zj"));
fw.setDate(re.getString("date"));
fw.setFwid(re.getInt("fwid"));
list.add(fw);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return list;
}// 全部信息 public List oneselect(int id) {
// TODO Auto-generated method stub
String sql = "select * from TBL_FWXX where fwid=" + id + "";
ResultSet re = getsql.getResultSet(sql);
List list = new ArrayList();
try {
while (re.next()) {
fwxx fw = new fwxx();
fw.setTitle(re.getString("title"));
fw.setZj(re.getString("zj"));
fw.setDate(re.getString("date"));
fw.setFwid(re.getInt("fwid"));
fw.setUid(re.getInt("uid"));
fw.setJdid(re.getInt("jdid"));
fw.setLxid(re.getInt("lxid"));
fw.setShi(re.getInt("shi"));
fw.setTing(re.getInt("ting"));
fw.setFwxx(re.getString("fwxx"));
fw.setTelephone(re.getString("telephone"));
fw.setLxr(re.getString("lxr"));
list.add(fw); }
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return list;
}// 单信息 public boolean check(String name, String pass) {
// TODO Auto-generated method stub
String sql = "select * from TBL_USER where uname='" + name
+ "' and upass='" + pass + "'";
ResultSet re = getsql.getResultSet(sql);
users user = new users();
try {
while (re.next()) {
user.setUid(re.getInt("uid"));
user.setUname(re.getString("uname"));
user.setUpass(re.getString("upass"));
System.out.println(user);
session.put("user", user);//这里 为什么会报错....
System.out.println(2);
return true;
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return false;
}// 登陆 public void setSession(Map<String, Object> arg0) {
// TODO Auto-generated method stub
this.session = arg0;
}}
java.lang.NullPointerException
com.dao.UserDaoImp.check(UserDaoImp.java:80)
com.action.action.login(action.java:62)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452)
com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:133)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
这个地方的错误.....
验证了下 Map session=null;貌似也不对还是报错..
我就特诧异...
我在action里面用的怪好的..
真心看了半天不知道错什么地方了..
貌似这样接受不到页面的session了ActionContext actionContext = ActionContext.getContext();
Map session = actionContext.getSession();
这是可以得到;我这是SessionAware接口得到session 不能等new HashMap();吧 等了就不是了....
public class action implements ServletRequestAware,SessionAware{
List list;
fwxx fw;
users user;
ServletRequest request;
Map<String, Object> session;
private IUserDao userdao=new UserDaoImp();
public List getList() {
return list;
} public void setList(List list) {
this.list = list;
} public fwxx getFw() {
return fw;
} public void setFw(fwxx fw) {
this.fw = fw;
}
public String allselect() throws Exception {
// TODO Auto-generated method stub
session.remove("user");
list=userdao.allselect();
return "success";
}
public String oneselect() throws Exception {
// TODO Auto-generated method stub
list=userdao.oneselect(fw.getFwid());
return "success";
}
public String login() throws Exception {
// TODO Auto-generated method stub
String name=request.getParameter("uname");
String pass=request.getParameter("upass");
list=userdao.allselect();
if(userdao.check(name,pass)){
return "login";
}else{
return "success";
}
}
public String myfw() throws Exception {
// TODO Auto-generated method stub
list=userdao.myselect();
return "success";
}
public String fbfw() throws Exception {
// TODO Auto-generated method stub
return "success";
}
public void setServletRequest(HttpServletRequest arg0) {
// TODO Auto-generated method stub
request=arg0;
} public void setSession(Map<String, Object> arg0) {
// TODO Auto-generated method stub
session=arg0;
}
}这是action代码 我就不明白 session代码基本一样一样的这在session就能得到...
// TODO Auto-generated method stub
session=arg0;
}