Question

struts2中.<s:iterator value=>怎么在jsp页面没有显示，求解。求高手指点！

后台：
实体类：
package com.enty;

public class UserIfo {
private String username;
private String passw;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassw() {
return passw;
}
public void setPassw(String passw) {
this.passw = passw;
}

}
数据处理类：
public class GetDbInforn extends ActionSupport {
public List<UserIfo> list;//用户信息列表
public List<UserIfo> Infolist = new ArrayList<UserIfo>();

public List<UserIfo> getList() {
return list;
}
public void setList(List<UserIfo> list) {
this.list = list;
}

public String execute() {
Login_DbDao db=new Login_DbDao();
ResultSet rs;
try {
rs=db.query("select * from Table_1 ");
while(rs.next()){
UserIfo ifo=new UserIfo();
System.out.println(rs.getString("username"));
System.out.println(rs.getString("passw")+" ");
ifo.setUsername(rs.getString("username"));
ifo.setPassw(rs.getString("passw"));
Infolist.add(ifo);
}
this.setList(Infolist);
this.getList();
for(int i = 0 ; i< list.size();i++){
System.out.println(list);
}
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "visitor";

}

jsp页面
<s:iterator value="list" status="st">
<tr>
<td>
<s:property value="username" />
</td>
<td>
<s:property value="passw" />
</td>
</tr>
</s:iterator>

Answer 1

public List<UserIfo> list;//用户信息列表
	public List<UserIfo> Infolist = new ArrayList<UserIfo>();
	
	public List<UserIfo> getList() {
		return list;
	}
	public void setList(List<UserIfo> list) {
		this.list = list;
	}
	
Infolist.add(ifo);

//设值是设到Infolist,页面取值是取list,list没有被赋值，所以没有数据！

//修改如下：
public List<UserIfo> Infolist;
	public List<UserIfo> getInfolist() {
		return Infolist;
	}
	
	public void setList(List<UserIfo> Infolist) {
		this.Infolist= Infolist;
	}Infolist.add(ifo);

<s:iterator value="Infolist" status="st">

//或者：
public List<UserIfo> list;
	public List<UserIfo> getList() {
		return Infolist;
	}
	
	public void setList(List<UserIfo> list) {
		this.Infolist= list;
	}
list.add(ifo);

<s:iterator value="list" status="st">

Answer 2

调试方法<s:debug>调试</s:debug>，先看看 那里面的值是否传过来了 ，看看页面是否有值

Answer 3

<s:iterator value="list" status="st" var=listinfo> <tr> <td> <s:property value="#listinfo.username" /> </td> <td> <s:property value="#listinfo.passw" /> </td> </tr>
</s:iterator>