Struts2使用OGNL表示式封裝輸入資料(直接封裝Map型別)
阿新 • • 發佈：2019-02-15
struts2使用OGNL表示式封裝資料，不僅支援物件，而且還支援諸如List,Map的容器
User.java
package HelloWorld;
publicclass User {
private String username; private String password; private String[] books;
public String[] getBooks() {
return books;
} publicvoid setBooks(String[] books) this.books = books; } public String getUsername() { return username; } publicvoid setUsername(String username) { this.username = username; } public String getPassword() { return password; } this.password = password; }
}
LoginAction.java
package HelloWorld;import java.util.Map;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionContext;publicclass LoginAction implements Action{ private String tip;private Map<String,User> users;public Map<String, User> getUsers() { return users;}publicvoid setUsers(Map<String, User> users) { this.users = users;}public String execute() throws Exception{ //用第一個user做邏輯判斷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;}publicvoid 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>
上面使用users['one'].username直接將輸入資料封裝成Map容器中的兩個物件