Struts2使用OGNL表达式封装输入数据(直接封装Map类型)

来源：互联网发布：ubuntu 编译安装lnmp 编辑：程序博客网时间：2024/05/21 07:46

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;

}

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;

}

index.jsp

<%@ page language="java" contentType="text/html; charset=gb2312"

pageEncoding="gb2312"%>

<%@ taglib prefix="s" uri="/struts-tags" %>

<html>

<head>

</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