Struts2使用OGNL表达式封装输入数据(直接封装Map类型)
struts2使用OGNL表达式封装数据,不仅支持对象,而且还支持诸如List,Map的容器User.java package HelloWorld;public class User ...{ private String username; private String password; private String[] books; pu
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struts2使用OGNL表达式封装数据,不仅支持对象,而且还支持诸如List,Map的容器
User.java
package
HelloWorld;
public class User ... {
private String username;
private String password;
private String[] books;
public String[] getBooks() ...{
return books;
}
public void setBooks(String[] books) ...{
this.books = books;
}
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;
}
}
public class User ... {
private String username;
private String password;
private String[] books;
public String[] getBooks() ...{
return books;
}
public void setBooks(String[] books) ...{
this.books = books;
}
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;
}
}
LoginAction.java
package
HelloWorld;
import java.util.Map;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionContext;
public class LoginAction implements Action ... {
private String tip;
private Map<String,User> users;
public Map<String, User> getUsers() ...{
return users;
}
public void setUsers(Map<String, User> users) ...{
this.users = users;
}
public String execute() throws Exception...{
//用第一个user做逻辑判断
if(this.getUsers().get("one").getUsername().equals("admin")&&this.getUsers().get("one").getPassword().equals("1234"))...{
ActionContext.getContext().getSession().put("user", this.getUsers().get("one").getUsername());
BookService bs=new BookService();
this.getUsers().get("one").setBooks(bs.getBooks());
this.setTip("welcome welcome");
return SUCCESS;
}else...{
return ERROR;
}
}
public String getTip() ...{
return tip;
}
public void setTip(String tip) ...{
this.tip = tip;
}
}
import java.util.Map;
import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionContext;
public class LoginAction implements Action ... {
private String tip;
private Map<String,User> users;
public Map<String, User> getUsers() ...{
return users;
}
public void setUsers(Map<String, User> users) ...{
this.users = users;
}
public String execute() throws Exception...{
//用第一个user做逻辑判断
if(this.getUsers().get("one").getUsername().equals("admin")&&this.getUsers().get("one").getPassword().equals("1234"))...{
ActionContext.getContext().getSession().put("user", this.getUsers().get("one").getUsername());
BookService bs=new BookService();
this.getUsers().get("one").setBooks(bs.getBooks());
this.setTip("welcome welcome");
return SUCCESS;
}else...{
return ERROR;
}
}
public String getTip() ...{
return tip;
}
public void setTip(String tip) ...{
this.tip = tip;
}
}
index.jsp
<%
...
@ page language="java" contentType="text/html; charset=gb2312"
pageEncoding="gb2312" %>
<% ... @ taglib prefix="s" uri="/struts-tags" %>
< html >
< head >
< title ></ title >
</ head >
< body >
< s:form action ="Login" >
< s:textfield name ="users['one'].username" key ="username" ></ s:textfield >
< s:textfield name ="users['one'].password" key ="password" ></ s:textfield >
< s:textfield name ="users['two'].username" key ="username" ></ s:textfield >
< s:textfield name ="users['two'].password" key ="password" ></ s:textfield >
< s:submit value ="login" ></ s:submit >
</ s:form >
</ body >
</ html >
pageEncoding="gb2312" %>
<% ... @ taglib prefix="s" uri="/struts-tags" %>
< html >
< head >
< title ></ title >
</ head >
< body >
< s:form action ="Login" >
< s:textfield name ="users['one'].username" key ="username" ></ s:textfield >
< s:textfield name ="users['one'].password" key ="password" ></ s:textfield >
< s:textfield name ="users['two'].username" key ="username" ></ s:textfield >
< s:textfield name ="users['two'].password" key ="password" ></ s:textfield >
< s:submit value ="login" ></ s:submit >
</ s:form >
</ body >
</ html >
上面使用users['one'].username直接将输入数据封装成Map容器中的两个对象
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