这是开博的第一篇，我希望每天把我学到的东西记录下来，成为一个知识库，方便以后的学习和分享
在项目中看到用struts2注解来做，很方便，做了一个用户登录的例子
1、加载所需jar包
commons-fileupload-1.2.1 jar
commons-io-1.4.jar
freemarker-2.3.15.jar
ognl-2.7.3 jar
struts2-core-2.1.8 jar
xwork-core-2.1.6 jar
struts2-json-plugin-2.1.8.1 jar
struts2-convention-plugin-2.1.8.1 jar
2、
package com.action;
import org.apache.struts2.convention.annotation.Namespace;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import org.apache.struts2.convention.annotation.Results;
@Namespace(value="/checkUser")
@ParentPackage(value="struts-default")
@Results(
{
@Result(name="yes",location="/check/yes.jsp"),
@Result(name="no",location="/check/no.jsp")
}
)
public class UserAction{
private String userName;
private String password;
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 execute() {
if("1".equals(userName)&&"2".equals(password)){
return "yes";
}
return "no";
}
}
action类，
@Namespace(value="/checkUser") 定义该action类的命名空间为checkUser ,
@ParentPackage(value="struts-default") 默认继承
@Results(
{
@Result(name="yes",location="/check/yes.jsp"),
@Result(name="no",location="/check/no.jsp")
}
) 定义该action返回时，跳转的页面
其中action的名字则是 “user” ,默认去掉action,首字母小写
3、配置web.xml
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
<!--
<init-param>
<param-name>actionPackages</param-name>
<param-value>com.action</param-value>
</init-param>
-->
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
4、登录验证的jsp页面，如何访问action
<form action="checkUser/user" method="post"> 用户名:<input name="userName"/></br> 密码:<input name="password"/></br>
<input type="submit" value="登录"/>
</form>
初次接触struts2注解，还在学习中
