最近我正在爲Struts2 UI標籤編寫一個教程。所以,我發現這個例子並且用完美的方式來執行它。Struts2配置瞭解
但是,在struts.xml配置文件中,我無法理解一些OGNL表達式。那我在這裏寫:
<struts>
<package name="default" extends="struts-default">
<action name="*Register" method="{1}" class="nirmal.RegisterAction">
<result name="populate">/register.jsp</result>
<result name="input">/register.jsp</result>
<result name="success">/success.jsp</result>
</action>
</package>
</struts>
在這裏,我在populateRegier從index.jsp的填充一個請求,所以它的它重定向到RegisterAction.java和執行填充()我的課的方法,即如下:
RegisterAction.java
package nirmal;
import java.util.ArrayList;
import com.opensymphony.xwork2.ActionSupport;
public class RegisterAction extends ActionSupport {
private String userName;
private String password;
private String gender;
private String about;
private String country;
private ArrayList<Country> countryList;
private String[] community;
private ArrayList<String> communityList;
private Boolean mailingList;
public String populate() {
countryList = new ArrayList<Country>();
countryList.add(new Country(1, "India"));
countryList.add(new Country(2, "USA"));
countryList.add(new Country(3, "France"));
communityList = new ArrayList<String>();
communityList.add("Java");
communityList.add(".Net");
communityList.add("SOA");
community = new String[]{"Java",".Net"};
mailingList = true;
return "populate";
}
public String execute() {
return SUCCESS;
}
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 String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getAbout() {
return about;
}
public void setAbout(String about) {
this.about = about;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public ArrayList<Country> getCountryList() {
return countryList;
}
public void setCountryList(ArrayList<Country> countryList) {
this.countryList = countryList;
}
public String[] getCommunity() {
return community;
}
public void setCommunity(String[] community) {
this.community = community;
}
public ArrayList<String> getCommunityList() {
return communityList;
}
public void setCommunityList(ArrayList<String> communityList) {
this.communityList = communityList;
}
public Boolean getMailingList() {
return mailingList;
}
public void setMailingList(Boolean mailingList) {
this.mailingList = mailingList;
}
}
第一個問題:我不明白爲什麼它exeucting這裏填寫()方法?
第二個問題:在struts2.xml中method="{1}"
是什麼意思?
在此先感謝...
請給出明確的解釋 – SMS 2016-07-11 06:11:43