最简单Struts2实例

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以下用登录功能，实现一个最简单的 struts2 可运行的实例。

一、新建项目 TEST

二、添加 STRUTS2 的包，共加5个，复制到WEB－INF/lib 下就可以了。

三、login.jsp

<%@ page language="java" contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>--------login--------</title>

</head>

   <s:textfield name="username" label="用户名" />
   <s:password name="password" label="密码" />
   <s:submit value="登录" />
  </form>
</body>
</html>
四、业务ACTION：LoginAction.java

package src;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ActionContext;

public class LoginAction extends ActionSupport {
private String username;
private String password;

public String getPassword() {
  return password;
}
public void setPassword(String password) {
  this.password = password;
}
public String getUsername() {
  return username;
}
public void setUsername(String username) {
  this.username = username;
}

public String execute() throws Exception
{
  if (this.getUsername().equals("1") &&
    this.getPassword().equals("1"))
  {
   ActionContext.getContext().getSession().put("user", this.getUsername());
   return SUCCESS;
  }
  else
  {
   return ERROR;
  }
}

public void validate()
{
  if (this.getUsername()==null || this.getUsername().trim().equals(""))
  {
   addFieldError("username", "用户名错误！");
  }

  if (this.getPassword()==null || this.getPassword().trim().equals(""))
  {
   addFieldError("password", "password 错误！");
  }
}

}

五、配置struts.xml

<?xml version="1.0" encoding="GBK" ?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
        "http://struts.apache.org/dtds/struts-2.0.dtd" >
<struts>
<package name="test" extends="struts-default">
  <action name="Login" class="src.LoginAction">
   <result name="input">/login.jsp</result>
   <result name="error">/error.jsp</result>
   <result name="success">/Welcome.jsp</result>
  </action>

</package>
</struts>

完成后，发布，http://localhost:9090/test/login.jsp就可以运行了。